Maintains critical valvetrain and balance shaft timing Expertly made from premium materials Prevents performance problems and possible engine damage that can result from incorrect timing The timing chain tensioner maintains the appropriate tension in the timing chain. The tensioner can use spring tension or hydraulic pressure to properly tension the chain. Symptoms of a or failing timing chain tensioner include: engine may stall or run rough, noise in the front of the engine (a rattle or rumble, associated with engine speed), or check engine light may illuminate and set misfire, camshaft sensor, and crankshaft sensor codes. When replacing a timing chain tensioner, it is highly recommended to replace the whole timing chain set, which includes all of the chains, the gear set, the tensioner(s), and the guides. Interchange Part Number: 241870, 12608580, 24448509, 12578209, 12791965, 90537802, 55352127 Colour:silver Material:Metal Package Contents: 1 x Timing Chain Tensioner Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.