Subaru OEM Manifold to Tumbler Gasket WRX (2002-2014) STI (2004-2018) Volkswagen while venting too much air

while venting too much air can cause less throttle response

it also made it difficult to "mix and match" the TXS downpipe with stock and other manufacturers exhaust components

-75a Urethane

All spigots on the PERRIN inlet hose are 1/2"ID for maximum flow from crank case vents and other vacuum connections

Subaru OEM Manifold to Tumbler Gasket WRX (2002-2014) STI (2004-2018) Volkswagen while venting too much airThese Subaru OEM gaskets are used when removing the intake manifold and tumblers. These are a necessity when changing fuel injectors, swapping in tumbler deletes, or using any other activity where the intake manifold has to be removed. Subaru OEM Tumbler to Cylinder Head Gasket These are the gaskets that sit under the tumbler. Subaru OEM Intake Manifold to Tumbler Gasket These are the gaskets that sit on top of the tumblers. FITMENT: Subaru STI 2004