AVCS Oil Control Valve 10921AA080 8100 The ARP case bolt kit

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

Manufacturer Part No: 390004S020

Requires professional installation and special tooling to avoid damaging the bushings or the housing

The drain plug is bottom facing for superior oil drainage

EJ251/ Forester/Impreza EJ253 Up to MY07

AVCS Oil Control Valve 10921AA080 8100 The ARP case bolt kitThe 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