Best Spark Plugs For Mazda Cx 5: Compare Iridium and OEM Options

#1 · Best Overall

1. Sixity Auto NGK Laser Iridium

• Core Material: Iridium
• Compatible with Vehicle Type: Car, Truck
• Weight: 6.08 oz

Best for: Naturally aspirated CX-5 owners.

Why it ranks #1: The listing explicitly fits CX-5 2.0L and 2.5L L4 engines across a stated range, and provides four genuine NGK iridium plugs with a 0.04-inch gap.

A four-plug NGK Laser Iridium set explicitly covers Mazda CX-5 2.0L and 2.5L L4 models from 2013–2020, making its stated engine and year range the key buying advantage. Its iridium core and focused electrode design target consistent sparking and fewer misfires for owners replacing a full set.

The listed 0.04-inch gap and M12 x 1.25 thread give useful specifications for checking the plug against the intended application before installation. NGK's center and ground electrodes are described as promoting sharper spark focus, which the listing connects with fewer misfires; the durable shell is intended to protect the plug during service life. The four-piece set suits a full four-cylinder replacement, while its stated fitment is limited to the listed CX-5 engine and model-year range.

Skip it if you need a listed fit for a 2021-or-newer CX-5; SYKRSS 94124 lists CX-5 applications through 2023.

A practical candidate for owners of a 2013–2020 CX-5 with the listed 2.0L or 2.5L L4 engine who want a four-plug NGK iridium replacement; stay within its stated fitment range.

Listed on Amazon as: 4 pc NGK Laser Iridium Spark Plugs for Mazda CX-5 2.0L 2.5L L4 2013-20

#2 · OEM-Branded Set

2. Genuine Mazda PE5R Iridium

• Core Material: Iridium
• Compatible with Vehicle Type: UTV

Best for: Genuine Mazda replacement seekers.

Why it ranks #2: This genuine Mazda four-plug set names CX-5 among its compatible models and lists iridium construction, making it a clear OEM-branded alternative.

Genuine Mazda PE5R-18-110A iridium plugs bring a manufacturer-branded replacement option for CX-5 owners who value an explicitly listed Mazda part. The four-piece set also names several other Mazda lines, and its listed replacement references help shoppers cross-check superseded part numbers when matching a service part.

The supplied fitment information identifies CX-5 among compatible Mazda models, but the visible vehicle list is truncated before the CX-5 engine and year details appear. Its iridium construction and four-plug quantity support a complete set replacement, while the listed PE01, PE02, PE20, PE21, and PE5S references provide additional part-number cross-checks. This is most useful for a buyer already matching the genuine Mazda part reference; the supplied information does not establish a full CX-5 year-and-engine range.

Skip it if you require a clearly stated CX-5 year-and-engine range before ordering; Sixity Auto's NGK set specifies CX-5 years and engine sizes.

A sensible option for a Mazda owner matching PE5R-18-110A or one of its listed replacement references and seeking a four-plug iridium set. The incomplete visible CX-5 application detail makes exact vehicle matching especially important.

Listed on Amazon as: Set Of 4 Genuine Mazda PE5R-18-110 Iridium Spark plugs for Mazda 3 Mazda 6 Mazda CX-3 Mazda CX-5 Mazda MX-5 Miata

#3 · Broad Fitment

3. SYKRSS 94124 Iridium

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

Best for: Broad Mazda year coverage.

Why it ranks #3: Its fitment statement explicitly includes Mazda CX-5 across a broad stated range, and the listing gives iridium construction, a 0.04-inch gap, and a two-year warranty.

SYKRSS lists CX-5 compatibility from 2014 through 2023, giving this four-pack a broad stated span for owners seeking an iridium replacement. Its 94124 reference, 14mm thread, and 0.04-inch gap provide concrete details for application checks, while the listing also names numerous other Mazda models.

The wide vehicle list includes Mazda 3, 6, CX-3, CX-30, CX-50, and MX-5 Miata applications as well as the CX-5, which can help buyers sourcing plugs for more than one Mazda. Iridium core and top materials identify the plug construction, while the four-pack suits a complete set replacement. The listing urges checking vehicle make, model, and engine size, and the stated CX-5 coverage ends at 2023; match the exact application before ordering.

Skip it if you need a listed CX-5 application for 2024; NGK DILKAR7M8 lists turbocharged CX-5 models through 2024.

A useful candidate for owners within the listed 2014–2023 CX-5 span who want an iridium four-pack and defined thread and gap details. Its stated coverage does not extend to 2024 CX-5 models.

Listed on Amazon as: Iridium Spark Plug 94124 4 Pack for Mazda CX-5

#4 · Turbo CX-5 Pick

4. NGK DILKAR7M8 Laser Iridium

• Core Material: Iridium
• Weight: 11.2 oz

Best for: Turbo CX-5 plug replacement.

Why it ranks #4: The description specifically lists 2.5L turbocharged CX-5 fitment, and the four-pack is NGK Laser Iridium; its stated application is narrower than general CX-5 options.

NGK's DILKAR7M8 Laser Iridium plugs explicitly cover 2019–2024 Mazda CX-5 2.5L turbocharged models, making their narrowly stated turbo fitment the key differentiator. The four-pack combines that application detail with a 0.03-inch gap and 12.0mm thread specification for a more informed parts check.

The listing identifies the plugs as NGK Laser Iridium high-ignitability parts and positions NGK as an OEM supplier, which supports buyers seeking that plug type for the named turbo CX-5 application. Four plugs make the quantity suitable for a set replacement, and the stated 0.03-inch gap and 12.0mm thread offer specifications to compare with the vehicle's requirements. The fitment description is specific to 2.5L turbocharged CX-5s, not every CX-5 engine configuration.

Skip it if you own a naturally aspirated CX-5; Sixity Auto's NGK set lists 2.0L and 2.5L L4 applications for 2013–2020.

A focused choice for owners of a 2019–2024 2.5L turbocharged CX-5 who want a four-plug NGK Laser Iridium set. Its narrow turbo-specific application is an important boundary for other CX-5 configurations.

Listed on Amazon as: OverstockDirect NGK 90288 Laser Iridium Spark Plugs DILKAR7M8, 4 Pack

#5

5. A-Premium DILKAR7M8

• Core Material: Iridium

Best for: Turbo-specific fine-wire option.

Why it ranks #5: This four-plug double-iridium set is listed for turbocharged 2.5L CX-5 applications, but its stated CX-5 coverage is narrower than the leading general-fit listings.

A-Premium specifies double-iridium fine-wire plugs for the 2.5L turbocharged CX-5, with its listed CX-5 application covering 2019–2020. The 0.030-inch gap and DILKAR7M8 reference give buyers concrete cross-checking details, while the four-pack is intended for a full set replacement.

The listing also names turbocharged Mazda 3, Mazda 6, and CX-9 applications, making its stated range relevant to owners maintaining multiple compatible vehicles. Iridium center-electrode tip and core materials identify the construction, and the 0.030-inch gap is explicitly associated with the fitment information. As with any application-specific plug, the stated CX-5 years are limited to 2019–2020 here; the listing does not establish fit for other CX-5 years or engine types.

Skip it if you have a 2021–2024 turbo CX-5; OverstockDirect's NGK DILKAR7M8 listing extends its stated turbo CX-5 range through 2024.

A relevant match for owners of a 2019–2020 2.5L turbocharged CX-5 seeking a four-pack of double-iridium fine-wire plugs. Its stated CX-5 application does not cover later years or other engine configurations.

Listed on Amazon as: A-Premium Double Iridium Spark Plugs Pack of 4, Fine Wire, 2.5L L4 Engine

#6 · Coil-and-Plug Kit

6. X4XZ UF656 Plug and Coil Kit

• Compatible with Vehicle Type: Car
• Weight: 1.17 kg

Best for: Ignition coil and plug replacement.

Why it ranks #6: The listing names CX-5 fitment and bundles double-iridium plugs with ignition coils, useful when replacing both; the supplied fitment details cover a narrower range.

This package combines an UF656 ignition coil with a 93501 double-iridium spark plug, letting a buyer address both ignition components in one purchase. Its listing specifically includes Mazda CX-5 applications from 2013–2018, alongside several other Mazda models, and describes the installation type as standard.

The coil-and-plug combination is relevant when replacing both components rather than buying plugs alone: the listing associates faulty coils or plugs with misfire, rough idle, reduced power, and poor fuel economy. It says components match or improve on OE design for fast, easy installation, while standard installation type signals a conventional install workflow. The supplied compatibility details include 2013–2018 CX-5s, so buyers outside that stated CX-5 range should not rely on this listing's fitment claim.

Skip it if you have a 2019–2024 CX-5; OTO-K's DHXQMZDOTO40027 lists later CX-5 applications, with stated engine limitations.

Choose this combination when a listed 2013–2018 CX-5 needs both an ignition coil and plug, rather than a plug-only service. Its stated vehicle range is the key boundary, so check the application details for your specific model.

Listed on Amazon as: UF656 Ignition Coil & 93501 Double Iridium Spark Plug for 13-18 Mazda CX-5

#7

7. NGK 93501 Iridium IX

• Core Material: Iridium
• Compatible with Vehicle Type: Car, Truck
• Weight: 6.4 oz

Best for: Fine-tip performance focus.

Why it ranks #7: It supplies four NGK iridium plugs with a 0.6-millimeter gap and a 12-millimeter thread, but the provided listing does not specify CX-5 fitment.

NGK's 0.6-millimeter laser-welded iridium tip is the defining feature here, paired with a tapered ground electrode to target a stable spark and reduced electrical quenching. The four-pack is presented for performance enthusiasts seeking improved ignitability and throttle response, rather than as a clearly specified CX-5 fitment listing.

The long insulator nose is intended to help prevent fouling, while corrugated insulator ribs are described as preventing flashover; these design details address ignition reliability rather than simply adding a performance claim. A triple-gasket seal is also listed, and the pack contains four plugs for a set replacement. However, the supplied product details do not identify CX-5 years or engines, so treat the plug specifications as useful only after establishing application compatibility separately.

Skip it if you need a stated CX-5 year-and-engine application; Sixity Auto's NGK Laser Iridium set lists specific CX-5 models and years.

Consider it if the correct application is already established and fine-tip ignitability, fouling protection, and a four-plug pack are your priorities. The missing CX-5 fitment details mean this listing alone cannot establish vehicle compatibility.

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

#8

8. OTO-K UF656 Coil and Plug Set

• Compatible with Vehicle Type: Car

Best for: Coils and plugs in one kit.

Why it ranks #8: The kit includes four plugs and four coils and lists multiple CX-5 engine configurations, but its fitment text contains conflicting model details that need verification.

OTO-K bundles four UF656 ignition coils with four 93501 spark plugs, letting buyers replace a full ignition set rather than source coils and plugs separately. Its fitment list includes multiple CX-5 engine and year combinations, with explicit cylinder-deactivation exclusions on some later applications.

The kit's bolt-on installation type describes the mounting workflow, and the included four coils plus four plugs support a coordinated replacement across the set. The CX-5 fitment details include 2.0L and 2.5L applications, but specify exclusions for cylinder deactivation on several later 2.5L ranges. Those distinctions matter when selecting a kit: check the listed engine, year, and cylinder-deactivation status rather than relying on the broad CX-5 name alone.

Skip it if you have a cylinder-deactivation CX-5 in a listed later 2.5L range; choose a plug-only option whose application matches your engine.

A strong format match when a CX-5 needs four coils and four plugs together and its engine configuration falls within the stated fitment. The cylinder-deactivation exclusions are essential boundaries, not minor details.

Listed on Amazon as: OTO-K Ignition Coils and Spark Plugs Set Compatible with Mazda CX-5 2013-2018/3 2012-2019/3 Sport 2014 2016-2018/6 2014-2017/CX-9 2016-2013/CX-30 2016-2013 L4 2.0L 2.5L UF656 93501 Set of 4

#9

9. Bosch 9621 Double Iridium

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

Best for: Double-iridium longevity priority.

Why it ranks #9: Bosch specifies double-iridium construction and claims four times the life of standard copper plugs, but the supplied data does not establish CX-5 compatibility.

Bosch pairs an iridium firing pin with an iridium ground-electrode inlay, a double-iridium arrangement the listing says lasts four times longer than standard copper plugs. Its fine-wire design also targets lower voltage requirements, making it a maintenance-minded option when the plug's application is verified.

The 360-degree laser-welded ultra-fine-wire firing pin is said to improve ignitability and reduce voltage requirements by up to 24%, linking its electrode design to ignition performance. Nickel-plated rolled threads are intended to resist corrosion and ease later removal. Four plugs are included, which suits a full set replacement, but the supplied information does not provide CX-5-specific years or engine fitment; the 12mm thread and 0.04-inch gap are specifications, not proof of vehicle compatibility.

Skip it if you need CX-5 application details in the listing; NGK's DILKAR7M8 set specifically lists 2019–2024 turbocharged CX-5s.

Best suited to a buyer who has verified the 9621 application and values double-iridium construction, corrosion-resistant threads, and a four-plug set. The listing's missing CX-5 fitment information is a meaningful boundary for this roundup.

Listed on Amazon as: BOSCH 9621 OE Fine Wire Double Iridium Spark Plug – Advanced Original Equipment Technology with 4X Life – Pack of 4

#10

10. Bosch 96302 Double Iridium

• Core Material: Iridium
• Compatible with Vehicle Type: Car, SUV, Truck
• Weight: 7.36 oz

Best for: Double-iridium OE technology.

Why it ranks #10: This Bosch four-pack has double-iridium construction, but the supplied data gives a 14-millimeter thread and no specific CX-5 fitment, so compatibility is uncertain.

Bosch's 96302 uses an iridium firing pin and iridium ground-electrode inlay, with the listing claiming four-times longer life than standard copper plugs. Its ultra-fine-wire electrode also claims improved ignitability and up to 24% lower voltage requirements, offering specific design benefits in a four-pack.

The 360-degree laser-welded firing pin connects the fine-wire design to the stated ignitability and voltage benefits, while nickel-plated rolled threads are intended to resist corrosion and support easier removal. Four plugs suit a full set replacement. Bosch identifies 14mm threads, but the supplied product details do not state CX-5 years or engine fitment, so that dimension alone cannot establish a correct application for a particular vehicle.

Skip it if you need a clearly listed CX-5 turbo application; NGK DILKAR7M8 specifies 2019–2024 2.5L turbocharged CX-5 fitment.

Consider this four-pack if the 96302 application has already been verified and you value double-iridium construction, fine-wire ignitability, and corrosion-resistant threads. Its listing does not establish CX-5 year or engine compatibility.

Listed on Amazon as: BOSCH 96302 OE Fine Wire Double Iridium Spark Plug – Pack of 4