How to Replace O Ring On Intake Manifold Pipe

2000 Chevrolet Impala. 3400 V6.
Question: On do we replace the o-ring on the intake the line from intake to heater.

Answer: Exactly which O-ring are you referring to? Are you talking about the O-ring on the pipe that is on top of the water pump

that goes to to the heater? Or the pipe on the lower intake manifold underneath the throttle and next to the thermostat?


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  • Guest - Gavino

    Need help on this. Does the intake have a groove where o-ring fit's into?

  • Guest - Bill

    In reply to: Guest - Gavino

    No groove on the intake manifold. The 'O ring just slides on the pipe and the pipe slides into the manifold.

  • Guest - Techjk

    That is called the intake coolant bypass elbo. Usually it breaks, not just a leaking O ring. You will have to remove the belt tensioner bracket and dig out the old black plastic pipe.

  • Guest - shaddy tree

    replace o ring on the top of the water pump on 2002 buick lesaber. what is the pipe called

  • Guest - bill tech

    In reply to: Guest - shaddy tree

    This also called the coolant bypass pipe o ring. A vey common area to leak antifreeze.

  • Guest - Gavino

    In reply to: Guest - bill tech

    Does the intake have groove where o-ring fits into? Need some feedback help..