Description: Genuine GM Guide, part number 12586959. This GM OEM guide keeps the crankshaft and camshaft(s) synchronized so the valves open and close at the right time. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 12586959 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.

Description: Genuine GM Timing Chain Tensioner, part number 12609261. This GM OEM timing chain tensioner keeps proper tension on the belt or chain so it runs quietly and does not slip or jump. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 12609261 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.

Description: Genuine GM Piston Kit with Pin, Rings, and Retainers (Left), part number 12686358. This GM OEM piston kit with pin, rings, and retainers (left) is an internal engine component built to factory specifications for proper fit, balance and durability. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 12686358 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.