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Heating and Cooling› Radiators

RCM

Engine Coolant Radiator

$107.25 $95.00 Save $12.25

SKU: RCM3303

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The Roger Clark Motorsport RCM3303 is a Cylinder 4 Cooling Mod Kit designed for the EJ family of Subaru engines. This kit addresses the known issue of insufficient cooling around cylinder 4, which can lead to increased temperatures. The kit includes billet fittings and a custom 90-degree Samco silicon hose, designed to be easily fitted into an unused port at the back of the block at cylinder 4's location. It then tees into the water matrix pipe above using supplied HiGrip stainless steel fittings.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandRCM
Part NumberRCM3303
CategoryHeating and Cooling

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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