Process West Black Billet Tumbler Generator Valve (TGV) Delete Kit 2001-2007 WRX/STI & 08+STI Drivetrain_Clutch Replacement Parts The standard cylinder head bolt

The standard cylinder head bolt (the component that joins the cylinder head to the block and offers force to seal your cylinder head gasket in place) is 11mm thick and uses a relatively fine thread

RH Rocker Cover Gasket to suit V4 Impreza's with the following engine codes : EJ20G/EJ20K

Based around the genuine part (but with a greater material thickness and improved design) we can safely ensure that provided adequate sealer and the correct torque has been applied

you would generally need to cut the existing plugs from your wiring loom

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Process West Black Billet Tumbler Generator Valve (TGV) Delete Kit 2001-2007 WRX/STI & 08+STI Drivetrain_Clutch Replacement Parts The standard cylinder head boltTumbler Generator Valves (or "TGV" as they are most commonly referred to) can be found on Impreza WRX, Forester Turbo and Legacy GT models from 2001 onward. Their prime purpose is to reduce emissions from cold idle to meet standards governed by the EU emissions regulations (similar regulations also exist for both the US and Japan). Whilst this may be good for the environment it does little to aid the performance of your car and it's not uncommon for