SKU: BD44700
Cobb NGK Heat Range 7 Spark Plugs 4-Pack 2002-2021 Subaru WRX STI Legacy GT Forester XT 2.5L Turbo
Cobb D44700 delivers the official NGK one-step-colder heat range 7 iridium spark plugs for all 2.5L turbo Subaru EJ engines in WRX, STI, Legacy GT, and Forester XT models. These pre-gapped plugs ensure reliable ignition under high boost levels, prevent detonation, and support tuned power gains when paired with Cobb Power Packages. Ideal for enthusiasts running Stage 2 or higher upgrades.
Key Features
- NGK Heat Range 7: One step colder than stock to handle high-boost and tuned setups without pre-ignition
- Iridium Construction: Fine-wire electrode for extended life up to 100,000 miles and consistent ignitability
- Pre-Gapped: Factory-set to 0.028" per Cobb specs for plug-and-play installation
- M14 x 1.25 Thread: Precise 25mm reach matches EJ25 turbo cylinder heads perfectly
- Japan-Made Quality: NGK manufacturing ensures durability under E85 and extreme conditions
Product Notes
- Required for warranty on Cobb Stage 2 or higher Power Packages
- Fits all 2.5L turbo EJ engines; not compatible with FA20 or FA24 engines
- Ships in official Cobb Tuning retail packaging, typically 6x4x1 inches
Installation Notes
- Professional installation recommended.
- Torque to 18 ft-lbs with anti-seize on threads to prevent galling
- Compatible with stock coils; installation time 30-60 minutes
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2021 | Subaru | WRX | STI |
| 2002-2007 | Subaru | WRX | Base |
| 2008-2014 | Subaru | WRX | Hatch/Sedan |
| 2005-2009 | Subaru | Legacy | GT |
| 2004-2013 | Subaru | Forester | XT |
Why Choose Cobb?
- Official plugs specified for Cobb Stage 2+ Power Packages worldwide
- NGK as the leading spark plug maker trusted by OEMs and racers
- Engineered for proven performance on high-boost and E85 fuel
Frequently Asked Questions
-
Q: Can these be used without a Cobb Power Package?
A: Yes for general tuning, but required for warranty coverage on Stage 2+ packages. -
Q: Are they pre-gapped for immediate use?
A: Yes, gapped to Cobb's 0.028" spec; do not adjust gap. -
Q: Do they fit newer FA20 WRX models?
A: No, FA20 requires Cobb D44701; these are EJ25 turbo only.
Shipping & Handling
- Method: UPS/FedEx Ground
- Availability: In stock - ships same or next business day
- Packaging: Official Cobb box, 6x4x1 inches
- Weight: 0.4 lbs
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