Engine Timing Chain Guide – ACDelco (12575159)

Engine Timing Chain Guide is part of the drive path between two shafts. Gears are lapped as a pair at the factory, which is why mixing a new gear with a worn mate usually produces noise.

Replace the Timing Chain Guide when backlash or tooth pattern is out of specification, or when the fluid carries metallic paste. Setting the pattern correctly on assembly matters as much as the part.

Reference number for the Timing Chain Guide: 12575159. It is filed under Camshafts & Timing, and it is the number that has to match the part coming off the vehicle.

Genuine ACDELCO supplied for this Timing Chain Guide, with the engineering number unchanged from the factory reference stamped on the original.