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Dorman Coolant Bypass Seals

4.75 out of 5 stars 8 Customer Reviews

Coolant bypass gaskets can become weak and brittle with time, allowing fluid leakage. Dorman coolant bypass seals feature quality rubber and steel construction to maintain a positive, leak-free seal.

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Dorman Coolant Bypass Seals 56390

Coolant Bypass Seals, Rubber/Steel, LS GEN III/IV, Buick, Cadillac, Chevy, GMC, Hummer, Pontiac, Set of 4

Part Number: RNB-56390

4.75 out of 5 stars ( 8 )

Estimated Ship Date: Monday 11/10/2025

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Estimated Ship Date: Monday 11/10/2025

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