Supertech Subaru EJ20/EJ25 Black Nitrided Intake Valve - +1mm Oversize - Set (SIVN-1014-2-8) 16-17 Porsche 911 Carrera S/4/4S/GTS (991.2) You'll need to remove the

You'll need to remove the factory plastic lower valance for full clearance—most installs pull it off without tools

Front row seat cover pair (2 covers)

Bring the headers to a torque wrench and gasket set when you're ready to bolt them up — standard engine work

rattle-free mounting

If you're comfortable with fuel system work and have basic hand tools

Supertech Subaru EJ20/EJ25 Black Nitrided Intake Valve - +1mm Oversize - Set (SIVN-1014-2-8) 16-17 Porsche 911 Carrera S/4/4S/GTS (991.2) You'll need to remove theSupertech SIVN 1014 Supertech Performance Valves Subaru 2. 0lts WRX Intake valve 37x5. 96x103. 85mm SS Supertech valves are the best on the market, made from one piece of forged stainless steel for the ultimate in strength and durability. Supertech valves go through a special heat treatment process that obtains the right amount of harness for each engine to ensure the ultimate valve for your performance motor. Supertech offers their valves in either