GM Water Pump Bypass Lower Pipe Seal, Duramax| 2001 - 2016
Replacement water pump bypass lower pipe o-ring seal for a 2001 to 2016 GM Duramax 6.6L V8 vehicle.
This seal fits in the groove where the coolant bypass pipe connects to the top of the water pump. This seal needs to fit securely. If the seal is swollen, it will not set in the pump correctly and could cause a leak.
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