2017 Gmc Sierra 2500 HD Engine Timing Chain Tensioner. Spark; Lower - 12645390

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2017 GMC Sierra 2500 HD

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Engine Timing Chain Tensioner

Part Number: 12645390

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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. Crank To Cam.

Engine Timing Chain Tensioner

Fits Spark

Spark; Lower; Intake Side.

Camshaft & timing. Crankshaft & bearings. Cylinder head & valves. Lubrication. Mounts. Pistons. Rings & bearings.

Full Diagram

#20

Oil pan. Oil pump. Variable valve timing. Spark; Auto Trans; Left. Spark; Auto Trans; Rear. Spark; Exhaust. Spark; Intake. Spark; Lower; Exhaust Side. Spark; Lower; Intake Side. Spark; Manual Trans; Left. Spark; Manual Trans; Rear. Spark; Upper.

Spark; Lower; Intake Side.