3MI Racing 3/4" Barbed End to 5/8" Barbed End Hose Adapter for AOS on Subaru EJ Engine Vehicle Model_WRX -Effectively raises the fuel octane

-Effectively raises the fuel octane and increases engine performance with cleaner inlet air

If you have a 2003 WRX

color transfer has not been found to be detrimental to the operation of the belt

Brake Light with Backup Light

Part #: NH108-1

3MI Racing 3/4" Barbed End to 5/8" Barbed End Hose Adapter for AOS on Subaru EJ Engine Vehicle Model_WRX -Effectively raises the fuel octaneWHAT IS IT & WHEN DO I NEED IT? This 3MI product is a hose adapter from the 7 8" inch block outlet to the 5 8" inch vent hose that is required for the installation of the IAG Street, IAG Comp, Cobb and Crawford AOS systems using the 3MI Racing AOS to EJ drain hose. Simply the easiest way to converge the IAG, Cobb, & Crawford AOS' to the 3MI drain hose. The drain hose is available to purchase separately! 3MI Racing AOS to EJ Turbo Drain Hose Kit Subaru