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631283
This is a silicone valve cover gasket for the Detroit Diesel Series 60 engine. It seals the lower to intermediate rocker cover joint, preventing oil leaks. Replace it when you see oil seepage around the valve cover or during a valve lash adjustment or engine overhaul to ensure a clean, leak-free seal.
Fits Series 60 engines using the 8929653 rocker cover design; this is the lower‑to‑intermediate seal, not the top cover gasket. Verify your rocker cover part number before ordering.
Part Number: 631283
valve cover gasket
Dealer: Post Onsite
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