Protect your Subaru EJ engine with the GetaDomTune "Mostly Oil" Blow-by Retention Oil Cap, designed to keep harmful blow-by gases contained while adding a touch of personality. This premium oil cap replaces the factory unit and is engineered specifically for most EJ Subaru models, ensuring a perfect fit and reliable performance.

This cap is uniquely clocked to the correct position so your oil cap never reads 710, and it comes with a new OEM O-ring for a secure seal. It’s built to handle the typical blow-by mixture—mostly oil, with some dirt, ethanol, and sludge—helping maintain engine cleanliness and efficiency. Ideal for Subaru enthusiasts who prefer using Rotella T6 diesel oil or want a durable, functional upgrade that stands out under the hood.

Upgrade your Subaru’s engine bay with this practical and eye-catching oil cap from Subimods. Perfect for WRX, STI, and other EJ models. Order today and keep your engine running clean and cool.