A strong spark plug choice for a 2013 Nissan Altima 2.5L should match the engine and replacement reference, and suit owners who want a four-plug set with clearly stated fitment. NGK Laser Iridium 94702 leads because its listing identifies the DF6H-11A reference, genuine NGK parts, and a four-pack. Several alternatives also list the Altima 2.5L, including double-iridium sets with a stated 0.044-inch gap; others cover broader vehicle ranges or omit useful fitment specifications.
Check the exact engine and OE reference against your vehicle before ordering, since a model-year match by itself does not guarantee compatibility. The comparison below distinguishes direct, specific fitment information from broader claims and explains which listed details matter when narrowing your choice.
NGK Laser Iridium 94702 is the leading choice because its listing identifies the DF6H-11A reference, calls the plugs genuine NGK parts, and includes four plugs for a complete set. A number of competing listings also cover the Altima 2.5L, but this option combines an exact replacement reference with the stated vehicle application. Confirm that reference and fitment for your vehicle before purchase; the product information alone does not verify every configuration.
Our Top Picks
Best OverallThe four-pack is identified as genuine NGK and specifies the 94702 and DF6H-11A reference, giving buyers a clear replacement identifier.
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Best Altima FitmentThis genuine NGK four-pack explicitly fits Altima 2.5L L4 applications including the target model year, with original packaging and hardware.
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Best Gap DetailIts fitment includes the Altima 2.5L and its specifications state a 0.044-inch pre-gap, 14 mm hex, and installation torque.
View on Amazon- Best Reference Match A-NAFTULY Double Iridium
- Best Ruthenium Option Sixity NGK Ruthenium HX
Compare the spark plug options
| # | Product | Core Material | Top Material Type | Compatible with Vehicle Type | Buy |
|---|---|---|---|---|---|
| 1 | 1. NGK Laser Iridium 94702Best Overall | Platinum | Metal | Car, Truck | View on Amazon |
| 2 | 2. Sixity NGK Laser IridiumBest Altima Fitment | — | — | — | View on Amazon |
| 3 | 3. A-Premium Double IridiumBest Gap Detail | Platinum | Iridium | Car | View on Amazon |
| 4 | 4. A-NAFTULY Double IridiumBest Reference Match | Iridium | Iridium | Car, Van | View on Amazon |
| 5 | 5. AULINK Double Iridium94702 double-iridium set | Iridium | Iridium | Car | View on Amazon |
| 6 | 6. Sixity NGK Ruthenium HXBest Ruthenium Option | — | — | — | View on Amazon |
| 7 | 7. Sixity NGK Iridium IXIridium IX Altima package | — | — | — | View on Amazon |
| 8 | 8. BDFHYK 9029 Iridium9029 double-iridium set | Iridium | Iridium | Car | View on Amazon |
| 9 | 9. X4XZ 9029 Double IridiumBroad 9029 application coverage | Iridium | Iridium | Car | View on Amazon |
| 10 | 10. Bosch 9621 Double IridiumOE fine-wire double iridium | Iridium | Iridium | Car, SUV, Truck | View on Amazon |
Detailed Reviews: Best Spark Plugs For 2013 Nissan Altima

#1 · Best Overall
1. NGK Laser Iridium 94702
- Core Material: Platinum
- Top Material Type: Metal
- Compatible with Vehicle Type: Car, Truck
Best for: Genuine NGK 94702 four-pack.
Why it ranks #1: The four-pack is identified as genuine NGK and specifies the 94702 and DF6H-11A reference, giving buyers a clear replacement identifier.
NGK’s Laser Iridium 94702 designation and DF6H-11A reference make this four-pack identifiable for buyers matching those replacement numbers. The listing specifies genuine NGK parts and includes original packaging and hardware, keeping the purchase centered on a branded set.
The 94702 and DF6H-11A identifiers give buyers concrete references to compare with their existing plug information. NGK describes the set as genuine Laser Iridium plugs, and the listing says original packaging and hardware are included. Those package details may simplify sourcing a complete replacement set, while the four-plug quantity suits a four-cylinder engine. The supplied product facts do not name specific Altima fitment, so the reference numbers alone should not be treated as proof of vehicle compatibility.
- Four NGK plugs
- Laser Iridium designation
- 94702 and DF6H-11A references
- Original packaging and hardware included
- The supplied listing does not specify Nissan Altima fitment.
Skip it if you need Altima fitment stated on the listing; NGK 4024185676 explicitly names the 2.5L L4 Altima.
This suits buyers seeking a four-piece NGK Laser Iridium set who can match the 94702 or DF6H-11A reference. Because the supplied details do not name Altima compatibility, confirm the exact application before using it for an Altima.
Full product details
| Brand | NGK |
|---|---|
| Compatible with Vehicle Type | Car, Truck |
| Core Material | Platinum |
| Included Components | 94702 |
| Item Weight | 6.4 ounces |
| Manufacturer | NGK |
| Part Number | DF6H-11A |
| Manufacturer Warranty Description | Includes manufacturer provided warranty |
| Model Number | DF6H-11A |
| Thread Size | 12mm |
| Top Material Type | Metal |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer – www.P65Warnings.ca.gov |
Listed on Amazon as: NGK Laser Iridium 94702 DF6H-11A Laser Iridium Spark Plug, 4 Pack
View on AmazonWhy it ranks #2: This genuine NGK four-pack explicitly fits Altima 2.5L L4 applications including the target model year, with original packaging and hardware.
NGK Laser Iridium construction is the defining choice here, supplied as four genuine plugs for the Altima 2.5L L4. The listing also includes hardware and calls the plugs direct replacements, giving owners a branded, application-specific package for a replacement job.
The stated Altima 2.5L L4 fitment narrows this set to owners checking plugs for that engine, rather than buyers needing a broadly described multi-vehicle application. NGK identifies the plugs as Laser Iridium, and the genuine-parts description helps distinguish the package by brand and type. Included hardware and the direct-replacement description may make parts gathering simpler for the job. The listing covers the specified Altima application; confirm the exact vehicle fit before ordering.
- Four-plug package
- NGK Laser Iridium designation
- Genuine NGK parts
- Hardware included and described as direct replacements
- The listed application is limited to Altima 2.5L L4 vehicles.
Skip it if you need a listing that names Rogue fitment too; A-NAFTULY 94702 explicitly lists Altima and Rogue 2.5L applications.
Choose this set if your Altima matches the listed 2.5L L4 application and you want four genuine NGK Laser Iridium plugs with hardware. The fitment description does not cover every Altima engine, so check the engine specification.
Full product details
| Brand | Sixity Auto |
|---|---|
| Item Weight | 6.5 ounces |
| Manufacturer | Sixity Auto |
| Part Number | 4024185676 |
| Dimensions | 3.7 x 0.94 x 3.32 inches |
Listed on Amazon as: 4 pc NGK Laser Iridium Spark Plugs for Nissan Altima 2.5L L4 2013-18
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#3 · Best Gap Detail
3. A-Premium Double Iridium
- Core Material: Platinum
- Top Material Type: Iridium
- Compatible with Vehicle Type: Car
Best for: Fine-wire gap-specific replacement.
Why it ranks #3: Its fitment includes the Altima 2.5L and its specifications state a 0.044-inch pre-gap, 14 mm hex, and installation torque.
A-Premium specifies double-iridium tips and a 0.044-inch pre-gap, giving this four-pack two concrete details for replacement planning. The listing names Altima 2.5L L4 applications and provides a 14 mm hex size and installation torque range for buyers preparing the job.
The double-iridium electrode material and stated 0.044-inch pre-gap give buyers useful specifications to compare with the vehicle’s plug requirements. A-Premium lists a 14 mm hex size and 20–25 N·m installation torque, information that can help prepare the correct tool and installation procedure. The fitment description covers specified Altima 2.5L L4 applications, including the sedan body code L33 for one listed application. Four plugs are supplied for a set replacement.
- Double-iridium electrode tips
- Specified 0.044-inch pre-gap
- 14 mm hex size and stated torque range
- Four plugs with listed Altima 2.5L L4 applications
- The listed Altima fitment is limited to the 2.5L L4 engine.
Skip it if you have an Altima with an engine other than the listed 2.5L L4; NGK 4024185676 also lists 2.5L L4 Altima fitment.
A-Premium suits owners matching the listed Altima 2.5L L4 fitment who want installation specifications alongside a four-plug double-iridium set. Its detailed gap and torque figures do not replace checking the vehicle’s exact application and service requirements.
Full product details
| Brand | A-Premium |
|---|---|
| Compatible with Vehicle Type | Car |
| Core Material | Platinum |
| Gap Size | 1.1 millimeters |
| Manufacturer | PremiumpartsWhosale |
| Part Number | APSP181 |
| Model Number | APSP181 |
| Thread Size | 0.47 |
| Top Material Type | Iridium |
Listed on Amazon as: A-Premium Double Iridium Spark Plugs Pack of 4, Fine Wire, 2.5L L4 Engine
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#4 · Best Reference Match
4. A-NAFTULY Double Iridium
- Core Material: Iridium
- Top Material Type: Iridium
- Compatible with Vehicle Type: Car, Van
Best for: Fine-wire double-iridium replacement.
Why it ranks #4: The listing covers the Altima 2.5L and names references 94702 and DF6H-11A, with a stated 0.044-inch gap and four plugs.
A 0.6 mm fine-wire iridium center tip paired with laser-welded construction is the defining feature of this four-plug A-NAFTULY set. The listing specifies a 0.044-inch gap and 2.5L four-cylinder Altima fitment, giving buyers concrete details to compare when sourcing replacement plugs.
The listed Altima 2.5L L4 coverage makes this set relevant to owners of that engine, while the stated Rogue coverage gives the same reference number a broader application. Its fine-wire iridium center tip and laser-welded construction are presented as supporting fuel efficiency; the 0.044-inch gap is another installation specification to check against the vehicle’s requirements. Four plugs are included, so the package quantity suits a four-cylinder replacement job without needing separate individual purchases.
- Four-plug set for a 2.5L L4 Altima
- 0.6 mm fine-wire iridium center tip
- Laser-welded construction
- Specified 0.044-inch gap
- Listed Altima coverage is limited to the 2.5L L4 application.
Skip it if you have an older Altima outside the listed 2.5L fitment; BDFHYK 9029 lists earlier Altima applications.
A practical candidate for Altima owners matching the listed 2.5L L4 application who want a four-plug iridium set with a stated gap. Treat the engine and vehicle fitment boundaries as essential checks before installation.
Full product details
| Brand | A-NAFTULY |
|---|---|
| Compatible with Vehicle Type | Car, Van |
| Core Material | Iridium |
| Gap Size | 0.04 inches |
| Included Components | 4 Pack Spark Plugs |
| Manufacturer | A-NAFTULY |
| Part Number | AN70282 |
| Manufacturer Warranty Description | 12 months |
| Model Number | 94702, DF6H-11A |
| Thread Size | 12mm |
| Top Material Type | Iridium |
Listed on Amazon as: Double Iridium Spark Plugs 4 Pack Compatible with Nissan Altima 2.5 2013 2014 2015 2016 2017 2018 & Nissan Rogue 2.5L 2014-2020 – Replaces 94702, DF6H-11A
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#5
5. AULINK Double Iridium
- Core Material: Iridium
- Top Material Type: Iridium
- Compatible with Vehicle Type: Car
Best for: 94702 double-iridium set.
Why it ranks #5: Its fitment covers the Altima 2.5L and it lists DF6H-11A and 94702 references, though its gap is stated approximately as 0.04 inches.
AULINK lists the 94702 and DF6H-11A references alongside double-iridium construction, making this four-plug set easy to compare by part number. Its stated coverage includes Altima 2.5L L4 applications and also names Rogue 2.5L L4 fitment.
The reference list includes 94702 and DF6H-11A, useful identifiers when comparing a replacement plug with the part being removed. AULINK describes the plugs as double iridium and says they concentrate spark energy to address weak ignition and sluggish acceleration; those are the listing’s stated performance aims, not guaranteed outcomes. The four-plug quantity suits the listed four-cylinder engine, while the stated Altima and Rogue applications help buyers assess whether this set matches their vehicle.
- Four-plug set
- Double-iridium construction
- Lists 94702 and DF6H-11A references
- Names Altima and Rogue 2.5L L4 applications
- The stated vehicle coverage is limited to the listed 2.5L L4 applications.
Skip it if you need a plug set with included components specified; NGK 94702 explicitly lists original packaging and hardware.
This is a fit for Altima owners matching the listed 2.5L L4 application who want double-iridium plugs identified by familiar reference numbers. Check the engine and replacement-part reference carefully, since the stated fitment is specific.
Full product details
| Brand | AULINK |
|---|---|
| Compatible with Vehicle Type | Car |
| Core Material | Iridium |
| Gap Size | 0.04 inches |
| Included Components | without |
| Manufacturer | AULINK |
| Part Number | DF6H-11A |
| Manufacturer Warranty Description | 1 Year |
| Model Number | DF6H-11A |
| Thread Size | 12mm |
| Top Material Type | Iridium |
Listed on Amazon as: AULINK 94702 DF6H11A Double Iridium Spark Plugs 4 Pack For Nissan Altima
View on AmazonWhy it ranks #6: This genuine NGK four-pack explicitly fits Altima 2.5L L4 applications including the target year and includes original packaging and hardware.
NGK Ruthenium HX material distinguishes this four-plug set from the iridium options in this roundup, while its listing covers Altima 2.5L L4 applications. Genuine NGK parts and included hardware make it a straightforward parts-package option for buyers replacing a complete set.
The stated Altima 2.5L L4 compatibility spans a broad range of applications, making this set relevant to owners checking replacement plugs for that engine. Its Ruthenium HX designation identifies the electrode material, and the genuine NGK parts description gives buyers a branded replacement option. The listing says hardware is included and describes the plugs as direct replacements, which can simplify sourcing the components for a replacement job; verify the exact vehicle application before ordering.
- Four NGK plugs in the set
- Ruthenium HX electrode designation
- Genuine NGK parts
- Hardware included; described as direct replacements
- The supplied fitment is limited to Altima 2.5L L4 applications.
Skip it if you need a listing that explicitly includes Rogue fitment; A-NAFTULY 94702 names both Altima and Rogue applications.
This suits an Altima owner seeking a four-piece NGK Ruthenium HX set with hardware included. Its listed application is the 2.5L L4 Altima, so buyers with a different engine or vehicle should choose a listing that specifies their fitment.
Full product details
| Brand | Sixity Auto |
|---|---|
| Item Weight | 6.4 ounces |
| Item model number | 4024103665 |
| Manufacturer | Sixity Auto |
| Part Number | 4024103665 |
| Dimensions | 3.7 x 0.94 x 3.32 inches |
Listed on Amazon as: 4 pc NGK Ruthenium HX Spark Plugs for Nissan Altima 2.5L L4 2007-18
View on AmazonWhy it ranks #7: The genuine NGK four-pack explicitly lists Altima 2.5L L4 fitment through the target year, although it provides fewer specifications.
NGK Iridium IX plugs are supplied as a four-piece set with listed Altima 2.5L L4 application coverage. Genuine NGK parts, original packaging, and included hardware distinguish the package for buyers who want a branded replacement set for the specified engine.
The listing names Altima 2.5L L4 applications, making the engine specification the central fitment check for buyers. NGK’s Iridium IX designation identifies the plug type, while the genuine-parts description gives a clear brand reference. Original packaging and hardware are included, and the set contains four plugs, which suits a complete set for a four-cylinder engine. The listing describes the parts as direct replacements; still compare the precise vehicle application before installing them.
- Four-plug set
- NGK Iridium IX designation
- Genuine NGK parts
- Original packaging and hardware included
- The listed Altima fitment is limited to the 2.5L L4 application.
Skip it if you need later Altima applications listed; NGK 4024185676 names Altima 2.5L L4 fitment through later applications.
This is for Altima owners whose vehicle matches the stated 2.5L L4 application and who want a four-piece NGK Iridium IX set. Its fitment listing has a boundary, so check the specific engine and vehicle details before installation.
Full product details
| Brand | Sixity Auto |
|---|---|
| Item Weight | 6.3 ounces |
| Manufacturer | Sixity Auto |
| Part Number | 4024113013 |
| Dimensions | 5.83 x 4 x 1 inches |
Listed on Amazon as: 4 pc NGK Iridium IX Spark Plugs for Nissan Altima 2.5L L4 2007-13
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#8
8. BDFHYK 9029 Iridium
- Core Material: Iridium
- Top Material Type: Iridium
- Compatible with Vehicle Type: Car
Best for: 9029 double-iridium set.
Why it ranks #8: This four-pack lists Altima 2.5L L4 fitment through the target year and iridium construction, but lacks a stated gap in the supplied details.
A double-iridium design and a four-plug package define this BDFHYK 9029 option for the Altima 2.5L four-cylinder. The listing describes stable idle and fast starting as benefits of its fine iridium tip, making those operating characteristics its clearest buyer-focused distinction.
BDFHYK identifies this as a double-iridium plug with a very fine iridium tip, and the listing connects that construction to stable idle and fast starting. Those stated benefits may matter to buyers replacing plugs to address ignition behavior. Its listed Altima application includes the 2.5L L4, while the purchase precautions advise matching vehicle details and the replaceable part’s OE number. The four-pack quantity suits a complete set for a four-cylinder engine.
- Double-iridium plug construction
- Very fine iridium tip
- Listing cites stable idle and fast starting
- Four plugs for the listed 2.5L L4 application
- The supplied Altima fitment does not extend to later listed Altima applications.
Skip it if you need an Altima application beyond the listed range; A-NAFTULY 94702 names later 2.5L Altima applications.
This fits buyers whose Altima matches the stated 2.5L L4 application and who value the listed fine-tip, double-iridium construction. Its Altima coverage has a defined boundary, so compare the vehicle details and OE reference before choosing.
Full product details
| Brand | BDFHYK |
|---|---|
| Compatible with Vehicle Type | Car |
| Core Material | Iridium |
| Included Components | Comes with housing |
| Manufacturer | BDFHYK |
| Part Number | BD-05-01873-SP |
| Manufacturer Warranty Description | 1 year warranty |
| Model Number | BD-05-01873-SP |
| Top Material Type | Iridium |
Listed on Amazon as: BDFHYK 9029 Iridium Spark Plugs 4 Pack For Nissan Altima 2.5L l4 2007-2013
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#9
9. X4XZ 9029 Double Iridium
- Core Material: Iridium
- Top Material Type: Iridium
- Compatible with Vehicle Type: Car
Best for: Broad 9029 application coverage.
Why it ranks #9: Its broad compatibility list includes Altima, but does not specify the engine size for that application, making exact fitment less clear.
A 9029 double-iridium plug with a broad vehicle application list is the defining feature of this X4XZ option. Its Nissan coverage includes Altima and several other models, while the listing provides an OE reference buyers can use when comparing replacement parts.
The listing identifies the plug as OE 9029 and names Nissan Altima among a wide range of vehicle applications, making the reference and application list useful starting points for comparison. Double-iridium construction is specified in the title and product details. The broad list also includes other Nissan and Infiniti models, but a shared reference does not establish fit for every engine or trim. Check the listed application details and the product’s second image before purchase, as instructed.
- 9029 OE reference
- Double-iridium construction
- Altima included in the Nissan application list
- Application list spans multiple Nissan and Infiniti models
- The supplied Altima application list ends before later Altima applications.
Skip it if you have a later Altima application; A-NAFTULY 94702 lists Altima 2.5L fitment through later applications.
This may suit an owner whose Altima appears in the 9029 application list and who wants a double-iridium plug with a clear OE reference. Its broad list has limits, so compare the exact vehicle details rather than relying on model name alone.
Full product details
| Brand | X4XZ |
|---|---|
| Compatible with Vehicle Type | Car |
| Core Material | Iridium |
| Included Components | 9029 Double Iridium Spark Plug |
| Manufacturer | X4XZ |
| Part Number | 9029 |
| Manufacturer Warranty Description | 1 YEAR |
| Model Number | 9029 |
| Thread Size | RM |
| Top Material Type | Iridium |
Listed on Amazon as: 9029 Double Iridium Spark Plug for 2007-2019 Nissan Rogue Altima Sentra
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#10
10. Bosch 9621 Double Iridium
- Core Material: Iridium
- Top Material Type: Iridium
- Compatible with Vehicle Type: Car, SUV, Truck
Best for: OE fine-wire double iridium.
Why it ranks #10: The listing describes double-iridium construction and a four-pack but provides no Altima application or vehicle fitment in the supplied data.
Bosch pairs an iridium firing pin with an iridium ground-electrode inlay, a specific double-iridium configuration offered in this four-pack. Its 360-degree laser-welded fine-wire firing pin is listed as reducing voltage requirements by up to 24%, giving buyers a quantified ignition-related feature.
The fine-wire firing pin and 360-degree laser weld are linked in the listing to better ignitability and reduced voltage requirements, with a stated reduction of up to 24%. An iridium ground-electrode inlay completes the double-iridium construction, while nickel-plated rolled threads are specified for corrosion resistance and plug removal. These features may matter during maintenance as well as operation. The listing provides a 12 mm thread size and 0.04-inch gap, but does not identify Altima fitment.
- Iridium firing pin and ground-electrode inlay
- 360-degree laser-welded fine-wire firing pin
- Listed voltage-requirement reduction up to 24%
- Nickel-plated rolled threads
- The supplied listing does not specify Nissan Altima fitment.
Skip it if you require explicit Altima compatibility; NGK DF6H-11A 94702 is listed for Altima applications.
Consider Bosch if its fine-wire double-iridium construction, stated voltage reduction, and corrosion-resistant threads suit your priorities. The supplied product details do not establish Altima fitment, so this option requires application confirmation before it can be selected for that vehicle.
Full product details
| Brand | Bosch |
|---|---|
| Compatible with Vehicle Type | Car, SUV, Truck |
| Core Material | Iridium |
| Gap Size | 0.04 inches |
| Included Components | Spark Plugs |
| Manufacturer | Bosch Automotive |
| Part Number | 9621 |
| Manufacturer Warranty Description | Limited |
| Model Number | 9621 |
| Thread Size | 12mm |
| Top Material Type | Iridium |
Listed on Amazon as: BOSCH 9621 OE Fine Wire Double Iridium Spark Plug – Advanced Original Equipment Technology with 4X Life – Pack of 4
View on AmazonAvoiding an engine and reference mismatch
A model-year match alone is not enough to establish that a plug fits your Altima; verify the engine and replacement reference before ordering. Several listings specify a 2.5L L4 application, while the Bosch listing supplies no Altima fitment, and the X4XZ compatibility list does not state the engine size for its Altima entry. Reference numbers help narrow the choice: NGK Laser Iridium 94702 names DF6H-11A, while A-NAFTULY Double Iridium and AULINK Double Iridium also list 94702 and DF6H-11A.
BDFHYK 9029 and X4XZ 9029 use a different reference. Do not treat those numbers as interchangeable based only on the supplied descriptions.
Compare the vehicle’s engine and existing plug reference with the product’s fitment information, then use the seller’s confirmed-fit tool or a qualified parts source if anything conflicts. This is especially important when a listing covers several vehicles and engine configurations.
What the listed plug materials do and do not tell you
Material labels help distinguish these options, but they do not prove how a plug will perform in your particular engine. Most listings identify an iridium construction: NGK Laser Iridium 94702, Sixity NGK Laser Iridium, and several double-iridium alternatives. Sixity NGK Ruthenium HX instead specifies a ruthenium product type in its title, while the Bosch description says its firing pin and ground electrode inlay are iridium.
A-Premium Double Iridium also supplies practical installation details, including a 0.044-inch pre-gap and 20–25 N·m torque. The supplied data does not establish a service interval comparison among all these products, nor does it document independent performance testing.
Treat material and gap as selection details, not a guarantee of longer life or better fuel economy. Follow the vehicle’s service information for the required plug, installation procedure, and replacement timing; avoid adjusting a pre-gapped plug unless the relevant instructions call for it.
How to Choose Altima Spark Plugs
Vehicle and reference fitment
Look first for an explicit Altima 2.5L L4 application and a matching replacement reference. NGK Laser Iridium 94702 identifies DF6H-11A; A-NAFTULY Double Iridium and AULINK Double Iridium list both DF6H-11A and Sixity NGK Laser Iridium states fitment for the 2.5L L4, while the X4XZ listing includes Altima without specifying its engine size.
The Bosch listing does not provide Altima fitment. Buyers with a verified 2.5L application and matching reference can prioritize the more specific listings; anyone uncertain about engine or reference should verify compatibility before choosing a broader application listing.
Plug material and construction
Choose among the construction details actually given, rather than assuming every iridium plug is identical. Several options are identified as double iridium, including A-Premium Double Iridium, A-NAFTULY Double Iridium, and AULINK Double Iridium. The NGK options include Laser Iridium, Iridium IX, and Ruthenium HX product descriptions; Bosch specifies an iridium firing pin and ground electrode inlay.
The available specifications do not establish a like-for-like lifespan comparison across these products. Buyers who want a clearly stated double-iridium design can focus on those listings, while someone seeking a named NGK product family can compare the Laser, IX, and Ruthenium HX choices, checking application details separately.
Gap and installation information
Prefer a listing with a clearly stated gap and installation details if you need those figures to compare or prepare for installation. A-NAFTULY Double Iridium and A-Premium Double Iridium state a 0.044-inch gap; AULINK Double Iridium and Bosch 9621 list 0.04 inches. A-Premium also gives a 14 mm hex and a 20–25 N·m installation torque.
The other supplied listings do not provide the same level of installation detail. Buyers who need a stated pre-gap or torque figure may find A-Premium’s specifications especially useful; those choosing another set should consult the vehicle and plug maker’s instructions rather than infer missing values or assume the rounded gap figures are identical.
Which Spark Plugs Should You Choose?
For the clearest reference match, choose NGK Laser Iridium 94702: its four-pack identifies DF6H-11A and is described as genuine NGK. If you want a product listing that explicitly calls out Altima 2.5L L4 fitment, Sixity NGK Laser Iridium is a strong alternative. Buyers comparing a double-iridium set with specific installation figures should consider A-Premium Double Iridium, which states a 0.044-inch gap and torque range.
A-NAFTULY Double Iridium and AULINK Double Iridium also name the 94702 and DF6H-11A references. For NGK’s other listed product families, compare Sixity NGK Ruthenium HX and Sixity NGK Iridium IX after confirming the exact application.
Verify engine and plug reference before ordering.
Frequently Asked Questions
How can I confirm the correct spark plug reference for my Altima before ordering?
Check your owner’s manual or confirm the original-equipment reference using your vehicle identification number with a Nissan parts department or qualified parts retailer. Match the engine and plug reference, not just the vehicle name. The NGK Laser Iridium 94702 listing identifies DF6H-11A, but confirm that reference and fitment apply to your specific vehicle.
When should spark plugs be replaced, and what symptoms can indicate a problem?
Follow the replacement interval in your owner’s manual, since the right schedule depends on the vehicle and specified plug. Misfiring, rough running, hard starting, or reduced performance can indicate an ignition issue, but they do not prove the spark plugs are at fault. Have the vehicle diagnosed if symptoms appear.
Should I install spark plugs myself or have a mechanic do it?
Choose a mechanic if you are unsure about access, plug compatibility, or the correct installation procedure. A careful DIY installation requires the right reference and tools, plus following the vehicle maker’s instructions; incorrect handling can cause problems. The product information here does not establish a complete installation procedure for every Altima configuration.
Do these listings all identify the same plug reference?
No. Some titles identify 94702 or DF6H-11A, while others name different product families or references, such as 9029, Ruthenium HX, or Iridium IX. Compare the exact reference with your vehicle’s required plug before ordering; a shared vehicle application in a listing does not by itself confirm every configuration.
What should I compare when choosing between these listings?
Start with the exact reference and verified fitment for your engine. Then compare the details each listing actually provides, such as plug family and pack quantity. The A-Premium listing also states a 0.044-inch gap and torque range; use those figures only after confirming the part and instructions match your vehicle.
Final Words
For the clearest reference match, the NGK Laser Iridium 94702 listing identifies DF6H-11A, describes the plugs as genuine NGK, and includes four plugs. Consider Sixity’s NGK Laser Iridium listing if you want an explicit Altima 2.5L L4 application, or A-Premium if its stated installation figures matter to you. Before ordering any option, verify the engine, required reference, and fitment for your specific vehicle.



