Coolant bypass tube upper o-ring.
This o-ring is installed on the slip fit between the bypass tube and thermostat housing.
It is common to accidently tear this o-ring when installing the bypass tube.

Fits: 2001-2016 LB7 LLY LBZ LMM LML 6.6l Duramax

Frequently Bought Together

Total price$2,161.80

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