Shop 1999 Buick Century Engine Timing Chain Tensioner. CT6; Left; Arm, Tension. CAMSHAFT, CRANKSHAFT - OEM Buick Part # 12666053

Chain Guide. Engine Timing Chain Tensioner. Shoe.
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 out of sync crankshaft to camshaft Timing. Arm.

Engine Timing Chain Tensioner

Fits CT6

CT6; Left; Arm, Tension.