Will these fit a 2009 subaru wrx?

Yes these will fit as i also use them in my 2009 wrx. Do not use unless you are at a minimum of 100 hp over stock though as it could hurt performance and fuel economy. These are NOT pre gapped for our Subaru WRX . Take your time and gap these plugs . Do not gap below .024 . I run a built motor and even before that i was pro tuned on both 91,93 and E85. Full bolt ons , headers, fuel pump, intake, hks blow off, blouch 20 G turbo and full 3 in back exhaust. Hybrid speed density . I still run them at .026 gap. Works very well for me.

Are these one step colder ?

Yes these are 1 heat range colder

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NGK Iridium IX Spark Plug LFR7AIX # 2309 PK4

Product ID: 261588337

Details

Brand
NGK
Core material
Iridium
Thread size
14mm x 1.25mm
Top material type
iridium
Vehicle service type
Car Truck

🔥Superior heat dissipation with copper core

⚙️Iridium core for ultimate durability

🛡️Trivalent plating for corrosion resistance

฿4011

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Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Ignite your drive with NGK Iridium – where precision meets power!

ADVANCED HEAT MANAGEMENT - Copper core and alumina silicate ceramic insulator work in tandem to optimize heat transfer and prevent overheating.
VEHICLE SPECIFIC FITMENT - Tailored thread size and gap ensure seamless compatibility with your car or truck for peak performance.
CORROSION SEIZE RESISTANT - Trivalent metal plating ensures your spark plugs stay pristine and easy to service, even in harsh conditions.
FLASHOVER PREVENTION DESIGN - Corrugated ribs eliminate misfires by preventing electrical flashover, keeping your engine firing clean and strong.
PRECISION ENGINEERED IRIDIUM CORE - Experience unmatched ignition reliability and longevity with NGK’s premium iridium tip.

NGK Iridium IX Spark Plug LFR7AIX #2309 PK4 is a high-performance automotive spark plug featuring a durable iridium core, copper heat-dissipating center, and corrosion-resistant trivalent plating. Designed with a pure alumina silicate ceramic insulator and corrugated ribs to prevent flashover, it delivers reliable ignition and enhanced engine efficiency. Compatible with specific car and truck models, this 4-pack ensures optimal fit and long-lasting performance.

Specifications

ASIN	B003RYMPUY
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#40,693 in Automotive ( See Top 100 in Automotive ) #231 in Automotive Performance Spark Plugs
Brand Name	NGK
Compatible with Vehicle Type	Car, Truck
Core Material	Iridium
Customer Reviews	4.7 4.7 out of 5 stars (445)
Gap Size	0.04 Inches
Included Components	2309
Item Highlight	Replaces 5345 5619 IKH22 VKH22 F6MPP332 FGR5NQE0 FGR6NQE0 FGR5NQE04 FR6MPP332 242245570000 0242245570000.
Item Weight	0.01 Ounces
Manufacturer	NGK
Manufacturer Part Number	LFR7AIX
Model Number	2309
Number of Items	4
OEM Equivalent Part Number	FORD%1505812
Thread Size	14mm x 1.25mm
Top Material Type	iridium
UPC	087295023099
Unit Count	4 Count

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฿4011

Duties & taxes included

In stock

Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Thailand.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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