AVCS Oil Control Valve 10921AA080 8100 ISF (superfinishing) improves strength and

ISF (superfinishing) improves strength and reliability by significantly reducing the surface roughness in order to eliminate stress raisers on the surface

Each application-specific kit is supplied with the minimum necessary parts for correct installation for the specific transmission

The ARP case bolt kit allows for increased bolt torque in order to keep the block case more rigid helping to control main bearing clearances under the most extreme engine forces

STI Group N rear lateral link bushing for the inner end locations

AVCS Oil Control Valve 10921AA080 8100 ISF (superfinishing) improves strength andThe AVCS intake oil control valve (solenoid) controls oil flow to the camshaft sprocket as part of the variable valve timing (VVT) system. It installs into the cylinder head's front cam bearing cap assembly. A sticking or faulty oil control valve may set a fault code and require replacement. The AVCS (Active Valve Control System) is used by Subaru to vary the camshaft timing in order to improve efficiency and reduce emissions across the rpm range. The