Engine components built to General Motors original specification — gasket sets, timing chain kits, belts and tensioners, pistons, oil pumps and engine mounts.
Internal engine work is unforgiving of specification drift. Gasket compressed thickness, timing chain pitch and plate hardness, tensioner spring rate and oil pump clearance all sit inside tolerances that GM set against a specific bearing clearance and oil pressure target. Parts that are dimensionally close but metallurgically different are the reason a rebuild that looked correct on assembly develops a knock or an oil pressure fault within a few thousand miles. Everything we supply in this category is manufactured to the original drawing.
Chain stretch of a few millimetres retards valve timing and shows up as rough idle and lost torque long before it becomes a noise.
A cold-start rattle on a chain-driven GM V6 or V8 should be treated as urgent. Chain stretch progresses quickly once it begins, and a chain that jumps a tooth on an interference engine turns a timing job into a cylinder head job.
We supply Engine Components components across every General Motors division:
We recommend it. The chain, guides, tensioner and sprockets wear as a matched set, and reusing worn guides against a new chain simply returns the wear pattern within months.
Yes, and often specific to a production date range within the same engine. Send the VIN so we match the correct revision.
Send the VIN and a description. We will identify the correct OE part and quote it back to you.
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