Genuine Subaru Impreza WRX Radiator Cap

Cooling Radiator Cap

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7 Radiator Caps found

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Subaru Impreza WRX Cap Assembly
Part Number: 45137AE003
$13.00 MSRP: $18.05
You Save: $5.05 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cap Assembly-Radiator; Cap, Cap Assembly, Radiator Cap
- Replaces: 45137AE000, 45137AE002, 45137AE001
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2002-2014 Subaru Impreza WRX | 2.5 GT, 2.5i, 25i, Outback, Outback Sport, RS, STI, STI Limited, STI Special Edition, STI Sport, TS, WRX, WRX Sport, WRX TR, WRXSS | 2.0L H4 Turbo, 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza WRX Cap Assembly Radiator
Part Number: 45137FE002
$16.81 MSRP: $24.37
You Save: $7.56 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Cap Assembly-Radiator; Cap, Radiator Cap
- Replaces: 45137FE000, 45137FE001
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2004-2014 Subaru Impreza WRX | 2.5 GT, STI, STI Limited, STI Special Edition, STI Sport, WRX, WRX Sport, WRX TR, WRXSS | 2.0L H4 Turbo, 2.5L H4 Turbo
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Subaru Impreza WRX Reserve Tank Cap
Part Number: 45153AA000
$4.16 MSRP: $5.78
You Save: $1.62 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cap-Reserve Tank; Cap, Reservoir Cap
- Replaces: 45153AA010
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2002-2014 Subaru Impreza WRX | 2.5 GT, 2.5i, 25i, Outback, Outback Sport, RS, STI, STI Limited, STI Special Edition, STI Sport, TS, WRX, WRX Sport, WRX TR, WRXSS | 2.0L H4 Turbo, 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza WRX Cap Assembly Radiator
Part Number: 45137AE002
$13.00 MSRP: $18.05
You Save: $5.05 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Cap Assembly-Radiator
- Replaced by: 45137AE003
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005-2011 Subaru Impreza WRX | 2.5 GT, 2.5i, 25i, Outback, Outback Sport, RS, STI, STI Limited, STI Special Edition, STI Sport, WRX, WRX Sport, WRX TR, WRXSS | 2.0L H4 Turbo, 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza WRX Cap Assembly Radiator
Part Number: 45137AE001
$13.00 MSRP: $18.05
You Save: $5.05 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Cap Assembly-Radiator
- Replaced by: 45137AE003
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2003-2005 Subaru Impreza WRX | Outback, RS, STI, TS, WRX | 2.0L H4 Turbo, 2.5L H4, 2.5L H4 Turbo
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Subaru Impreza WRX Cap Assembly Round
Part Number: 45137FE001
$16.81 MSRP: $24.37
You Save: $7.56 (32%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Cap Assembly-Radiator
- Replaced by: 45137FE002
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2004-2005 Subaru Impreza WRX | STI, WRX | 2.0L H4 Turbo, 2.5L H4 Turbo
View related parts
Subaru Impreza WRX Radiator Cap
Part Number: 45137AE000
$13.00 MSRP: $18.05
You Save: $5.05 (28%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Cap Assembly-Radiator
- Replaced by: 45137AE003
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2002 Subaru Impreza WRX | Outback, RS, TS, WRX | 2.0L H4 Turbo, 2.5L H4

Subaru Impreza WRX Radiator Cap

The Subaru Impreza WRX Radiator Cap keeps the turbocharged boxer engine cool by maintaining the correct pressure that prevents the coolant from boiling. The robust Radiator Cap is relied upon for both track days and runs. It features a 16 PSI spring that seals the radiator neck tightly, rising only when there is a pressure build-up that allows the heat to vent to the overflow bottle. This process pulls fluid back into the system when things cool down. By keeping a full, air-free circuit, the Radiator Cap allows every Subaru owner to enjoy constant power without overheating. The Radiator Cap of Impreza WRX is easy to swap because the early softer and later firm pressure ratings screw on easily thanks to matching size and threads. The fitment shared means compatibility through many model years of the Impreza WRX from early turbo sedans to new hatchbacks. Consequently, this allows owners to choose the seal suited for daily Subaru commuting or weekend boosts. Increasing the rating will elevate the boiling point, leading to enhanced thermal efficiency. This, in turn, protects gaskets, hoses, and the aluminum block. Meanwhile, the lighter variant opens up sooner, thereby alleviating stress on contemporary Impreza WRX engines. Regularly checking the seal and spring helps ensure that the cooling system of your Subaru functions smoothly. Likewise, it also helps give instant throttle response, leaving the engine idle steady and stable. Owners of Subarus are also reassured by the presence of a spare Radiator Cap in their trunks, which will fit any Impreza WRX made in the last two decades. This proven Radiator Cap technology remains a factory standard. Weighing little and costing less, the Radiator Cap sets itself apart. The parts market is flooded with copy products, many of which don't inspire the confidence enthusiasts want from Subaru machinery. However, that's not the case here. A tiny product can make a huge difference to your performance and safety.

Our website stands as the go-to online destination for OEM Subaru Impreza WRX Radiator Cap. With complete lines of genuine Subaru Impreza WRX Radiator Cap available at unbeatable market prices, we ensure top quality, reliability, and durability. Each part comes backed by the manufacturer's warranty, reinforcing your trust in our offerings.