Best Spark Plugs For Subaru Impreza: Compare 10 Options

#1 · Best Overall

1. Sixity Auto NGK Laser Iridium

Best for: 2017–2020 Impreza 2.0L replacement.

Why it ranks #1: Names the 2017–2020 Impreza 2.0L H4 fitment directly and supplies four genuine NGK plugs with original packaging and hardware.

Genuine NGK Laser Iridium plugs arrive as a four-piece set for the 2017–2020 Subaru Impreza 2.0L H4, giving owners a direct-replacement option tied to that stated engine and year range. Original packaging and hardware are included, making the set a focused choice for a scheduled plug change.

The four-plug quantity matches the listing’s set format, while the stated 2.0L H4 fitment narrows its use to Impreza model years 2017 through 2020. NGK Laser Iridium construction identifies the plug type, and the listing describes the parts as genuine NGK and direct replacements. Original packaging and hardware come with the set, so buyers have the listed components together for a replacement job. The supplied information does not specify an installation interval or performance gain.

Skip it if you own a 2012–2016 Impreza 2.0L H4; the NGK Iridium IX set from Sixity Auto lists those years instead.

This set suits an owner replacing plugs on a 2017–2020 Impreza 2.0L H4 who wants genuine NGK Laser Iridium parts and included hardware. Its stated compatibility is specific, so other engine sizes and years fall outside the listed fitment.

Listed on Amazon as: 4 pc NGK Laser Iridium Spark Plugs for Subaru Impreza 2.0L H4 2017-20

#2 · Double-Iridium Pick

2. A-Premium Double Iridium

• Core Material: Iridium
• Top Material Type: Iridium
• Compatible with Vehicle Type: Car

Best for: 2017–2020 Impreza fine-wire option.

Why it ranks #2: Fits the 2017–2020 Impreza 2.0L H4 and specifies double iridium construction with a 0.032-inch gap.

Double-iridium center electrode materials and a stated 0.032-inch gap define this four-plug A-Premium set for the 2017–2020 Subaru Impreza 2.0L H4. Those specifications give shoppers concrete selection details, while the product’s fitment listing also includes certain Crosstrek 2.0L applications.

A-Premium specifies iridium for both the center electrode tip and core, pairing the double-iridium construction with a 0.032-inch gap. Those details can help buyers compare the plug against the vehicle’s specified requirements before beginning a replacement. The fitment list names Impreza 2017–2020 H4 2.0L and Crosstrek 2018–2020 H4 2.0L applications. A four-plug pack provides the listed quantity for a set replacement, and the M12 x 1.25 mm thread size is also stated for selection reference.

Skip it if you drive a 2012–2016 Impreza 2.0L H4; the Subaru 22401AA781 genuine set lists that non-turbo application.

Consider this set for a 2017–2020 Impreza 2.0L H4 owner comparing double-iridium construction and a 0.032-inch gap. The product also lists Crosstrek applications, but its Impreza fitment does not extend to other years or engines.

Listed on Amazon as: A-Premium Double Iridium Spark Plugs Pack of 4, Fine Wire 2.0L H4 Engine

#3 · Older 2.0L Fit

3. Sixity Auto NGK Iridium IX

• Core Material: Iridium
• Top Material Type: Iridium
• Compatible with Vehicle Type: Car, Truck

Best for: 2012–2016 Impreza 2.0L H4.

Why it ranks #3: Specifically covers 2012–2016 Impreza 2.0L H4 models, with four genuine NGK iridium plugs and a listed 0.04-inch gap.

NGK Iridium IX construction distinguishes this four-plug set for the 2012–2016 Subaru Impreza 2.0L H4, offering owners a specifically listed replacement for that generation. Genuine NGK parts, original packaging, and hardware accompany the set, while its stated 0.04-inch gap gives buyers a concrete specification to consider.

The listed vehicle fitment covers 2012 through 2016 Impreza models with the 2.0L H4, making the application clear for owners within that range. Four plugs are supplied, and the listing identifies them as genuine NGK Iridium IX direct-replacement auto parts. Its 0.04-inch gap and iridium core and top materials provide useful specification details when selecting a replacement. Original packaging and hardware are included; the listing does not claim a particular service interval or performance improvement.

Skip it if you have a 2017–2020 Impreza 2.0L H4; the Sixity Auto NGK Laser Iridium set lists those newer model years.

Choose this set for a 2012–2016 Impreza 2.0L H4 replacement when NGK Iridium IX plugs and the listed 0.04-inch gap suit your selection. The specified year and engine range are the key fitment boundary.

Listed on Amazon as: 4 pc NGK Iridium IX Spark Plugs for Subaru Impreza 2.0L H4 2012-16

#4 · Genuine Subaru Set

4. Subaru OEM 22401AA781

• Core Material: Copper
• Top Material Type: Copper
• Compatible with Vehicle Type: UTV

Best for: Genuine Subaru non-turbo owners.

Why it ranks #4: Genuine Subaru plugs cover non-turbo Impreza 2.0 models from 2012–2016, making this a direct model-specific OEM option.

A genuine Subaru four-plug set with a defined non-turbo application makes this option relevant to Impreza owners who prioritize the listed OEM part. The product identifies Impreza 2.0 models from 2012–2016 among its compatible applications, alongside several other Subaru models, providing a broader Subaru-specific fitment list.

The listing names the genuine Subaru part number 22401AA781 and specifies four plugs, giving buyers a clearly identified OEM set rather than an unspecified replacement. Its application list includes non-turbo Impreza 2.0 models from 2012–2016, plus non-turbo Forester, Crosstrek, Legacy, and Outback applications in stated ranges. This makes the vehicle and engine distinction central to selection. The supplied specifications and description differ on electrode material, so material should not be the deciding claim; use the stated application details.

Skip it if you need plugs for a 2017–2020 Impreza 2.0L H4; the A-Premium DILKAR7B8 set lists that application.

This set fits buyers seeking a genuine Subaru part for the listed non-turbo Impreza 2.0 from 2012–2016, or another specifically named Subaru application. Turbo models and unlisted years are outside its stated Impreza fitment.

Listed on Amazon as: Subaru 2011-2019 Forester Impreza Legacy Crosstrek Set 4 Spark Plugs – 22401AA781 x4 – Genuine OEM

#5

5. Sixity Auto NGK G-Power

Best for: 2012–2016 Impreza G-Power set.

Why it ranks #5: The listing identifies 2012–2016 Impreza 2.0L H4 fitment and supplies a four-pack of genuine NGK replacement plugs.

NGK G-Power plugs in a four-piece set are specifically listed for the 2012–2016 Subaru Impreza 2.0L H4, giving owners of that application a targeted replacement option. The listing identifies genuine NGK parts and includes original packaging and hardware with the set.

The fitment statement names Impreza model years 2012 through 2016 and specifies the 2.0L H4, which makes the application clear for owners within that range. Four NGK G-Power plugs are supplied, and the listing calls them genuine NGK direct-replacement auto parts. Original packaging and hardware are included, helping keep the listed replacement components together for the job. The supplied information does not state a gap, electrode material, service interval, or performance benefit, so selection rests on the stated type and fitment.

Skip it if you need iridium IX construction and a stated 0.04-inch gap; the Sixity Auto NGK Iridium IX set lists both.

This set suits owners replacing plugs on a 2012–2016 Impreza 2.0L H4 who want the listed NGK G-Power type and four-piece quantity. Its fitment statement is narrow, and no gap specification is supplied.

Listed on Amazon as: 4 pc NGK G-Power Spark Plugs compatible with Subaru Impreza 2.0L H4 2012-16

#6 · 2.5L Engine Match

6. Sixity Auto NGK Ruthenium HX

Best for: 2004–2014 Impreza 2.5L H4.

Why it ranks #6: Its stated 2004–2014 Impreza 2.5L H4 range suits buyers with the larger listed engine and includes four NGK plugs.

NGK Ruthenium HX plugs are listed as a four-piece direct replacement for the 2004–2014 Subaru Impreza 2.5L H4, making the engine and year range the central selection advantage. The set also includes original packaging and hardware, with genuine NGK parts identified by the listing.

The listing covers Impreza model years 2004 through 2014 with a 2.5L H4, a specific application that helps distinguish this set from options for other generations or engine sizes. Four NGK Ruthenium HX plugs are supplied as genuine NGK parts, and the seller describes them as direct-replacement auto parts. Original packaging and hardware are included for the replacement task. The provided facts do not state the plug gap or claim a performance gain, so the named vehicle fitment remains the key selection detail.

Skip it if you own a 2017–2020 Impreza 2.0L H4; the Sixity Auto NGK Laser Iridium set lists that engine and year range.

This set is aimed at an owner replacing plugs on a 2004–2014 Impreza 2.5L H4 who wants the listed NGK Ruthenium HX type. Its stated fitment does not cover other Impreza engine sizes or years.

Listed on Amazon as: 4 pc NGK Ruthenium HX Spark Plugs for Subaru Impreza 2.5L H4 2004-14

#7

7. Subaru OEM 22401AA310

• Core Material: Copper
• Top Material Type: Copper
• Compatible with Vehicle Type: UTV

Best for: Older non-turbo Impreza applications.

Why it ranks #7: Genuine Subaru plugs list Impreza 1.8L, 2.2L, and 2.5L SOHC non-turbo fitments from 1993–2004, but not newer models.

Genuine Subaru plugs with part number 22401AA310 target older naturally aspirated Impreza applications, including the 1993–2004 1.8L, 2.2L, and 2.5L H4 SOHC ranges stated in the listing. The four-piece set is also associated with several Legacy, Forester, and Baja applications.

This four-plug set names Subaru part number 22401AA310 and lists older Impreza engines across several displacements, all described as H4 SOHC non-turbo applications. That specific engine and generation information is more useful for selection than a broad Impreza label alone. The listing also includes Legacy 2.2L and 2.5L applications, along with Forester and Baja models. The product specifications identify a 14 mm thread size and copper core and top material, details buyers can use when checking the stated application.

Skip it if you own a 2012–2016 Impreza 2.0L H4; the Sixity Auto NGK G-Power set lists those model years.

This set is for owners matching the older non-turbo Impreza H4 SOHC applications and Subaru part number shown, especially those replacing plugs in the listed 1993–2004 range. Newer Impreza engines are not covered by that stated range.

Listed on Amazon as: Subaru Spark Plugs Set of 4 22401AA310 Impreza Outback Legacy Baja Forester Genuine OEM

#8

8. OverstockDirect NGK Laser Iridium

Best for: Laser-iridium cold-start priorities.

Why it ranks #8: This four-pack is described as genuine NGK Laser Iridium for selected Impreza 2.0L H4 years, but the supplied fitment detail is incomplete.

A double fine electrode design with an iridium alloy center electrode distinguishes this four-pack of NGK Laser Iridium plugs, with the listing connecting its design to quicker throttle response, smoother idle, and better cold starts. Select Crosstrek and Impreza 2.0L H4 years are identified as applications.

The listing describes the DFE tip and iridium alloy center electrode as an OE-style high-ignitability design, while its double fine electrode uses a platinum pin. Those construction details are linked in the supplied description to more complete fuel burn, quicker throttle response, smoother idle, and better cold starts. The stated Impreza fitment is 2.0L H4 for select years, but the full Impreza year list is not included in the provided facts. Check the exact application information before choosing this four-pack.

Skip it if you need a fully stated 2017–2020 Impreza 2.0L H4 range; the Sixity Auto NGK Laser Iridium set names those years.

This four-pack fits shoppers interested in NGK Laser Iridium electrode features and the listed driveability aims for select Impreza 2.0L H4 applications. The provided facts omit the complete Impreza year range, so confirm that detail before selecting.

Listed on Amazon as: OverstockDirect NGK Laser Iridium Spark Plugs 4 Pack

#9

9. OverstockDirect NGK 91899

Best for: NGK 91899 plug specification shoppers.

Why it ranks #9: The listing specifies four NGK DILKAR7Q8 plugs and iridium construction, but does not provide Subaru Impreza fitment details.

NGK part designation DILKAR7Q8 91899 anchors this four-plug Laser Iridium listing, which describes fine-wire construction for a stable spark and high durability. Buyers comparing plugs by a specific NGK designation can use that identification, though the supplied facts do not name an Impreza fitment.

The listing identifies four NGK Laser Iridium plugs by the DILKAR7Q8 91899 designation and describes them as often specified as original equipment. Its additional description links the fine-wire center electrode to a consistently stable spark and high durability, while the iridium alloy’s high melting point is presented as suitable for high-performance engines. These details help explain the plug’s construction, but no Subaru Impreza year, engine, gap, or thread specification is supplied here. Treat vehicle application as unresolved by this listing.

Skip it if you need a listed 2012–2016 Impreza 2.0L H4 match; the Sixity Auto NGK G-Power set states that application.

Choose this only when the NGK DILKAR7Q8 91899 designation and Laser Iridium construction match your selection needs. The supplied information leaves Impreza fitment and key dimensions unstated, making it less direct for a vehicle-specific roundup.

Listed on Amazon as: OverstockDirect NGK 91899 Laser Iridium Spark Plug DILKAR7Q8, 4 Pack

#10

10. NGK Iridium IX 93501

• Core Material: Iridium
• Top Material Type: Metal
• Compatible with Vehicle Type: Car, Truck

Best for: Fine-wire ignition performance focus.

Why it ranks #10: This four-pack lists iridium construction and an M12 x 1.25 thread, but provides no Impreza model-year or engine fitment.

A 0.6 mm laser-welded fine iridium tip is the defining feature of NGK’s Iridium IX plug, which the listing associates with a stable spark and high durability. The four-pack also includes a tapered ground electrode and anti-fouling design details for drivers prioritizing ignition characteristics.

NGK states that the fine iridium tip and tapered ground electrode support ignitability and reduce electrical quenching, linking the electrode geometry to the plug’s spark behavior. A longer insulator nose is listed as a fouling-prevention feature, while corrugated insulator ribs are said to help prevent flashover. The triple gasket seal is another specified construction detail. Four plugs are included, with an M12 x 1.25 thread and 0.6 mm gap. The supplied information does not list Subaru Impreza year-and-engine fitment, so application must be established separately.

Skip it if you want an explicitly listed Impreza 2.0L H4 application; the Sixity Auto NGK Iridium IX set covers 2012–2016.

This NGK set suits buyers prioritizing the listed fine-wire electrode, anti-fouling details, and ignition design features. Its supplied listing gives no Impreza year or engine application, so it is not a fitment-specific pick for that car.

Listed on Amazon as: NGK LKAR7BIX-11S Iridium IX Spark Plug (93501 Iridium Ix), 4 Pack