Buy 2018 Subaru STI Engine Timing Chain Tensioner (Outer). Camshaft and timing belt. CAMSHAFT, Crankshaft - OEM Subaru Part # 13142AA150

An Oil pressurized Tensioner that keeps the Chain that runs from the Crankshaft to Camshaft or the Chain that runs from Camshaft to Camshaft. from becoming loose and jumping a Tooth or more causing Engine damage or of SYNCRON Crankshaft to Camshaft Timing.

TENSIONER-CHAIN Engine Timing Chain Tensioner

Fits Forester, WRX