1. Attachments are working again! Check out this thread for more details and to report any other bugs.

2008 Prius water pump gasket

Discussion in 'Gen 2 Prius Technical Discussion' started by Yogi Beer, Oct 30, 2019.

  1. Yogi Beer

    Yogi Beer Junior Member

    Joined:
    Aug 13, 2019
    5
    0
    0
    Location:
    Florida
    Vehicle:
    2008 Prius
    Model:
    Base
    What is the circular ridge for on a 2008 Prius water pump gasket and does the high part of ridge go towards the engine block? Also I’m confused as to wether to use RTV. There seem to be two schools of thought on this. Thanks.
     
    #1 Yogi Beer, Oct 30, 2019
  2. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,133
    50,050
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    i'm not positive, but @Patrick Wong might have a write up on this
     
    #2 bisco, Oct 30, 2019
    Yogi Beer likes this.
  3. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
    18,200
    6,482
    0
    Location:
    Green Valley, AZ
    Vehicle:
    2015 Prius
    Model:
    Two
    You can only orient the gasket one way to fit with the coolant pump because the pump shape is not symmetrical. Note how the original coolant pump gasket is oriented as you remove it.

    If you use the correct Toyota gasket and coolant pump, and observe the correct torque spec when tightening the nuts/bolts, RTV is not required.

    My thread on that subject is here.
    How to replace engine coolant pump and thermostat | PriusChat
     
    #3 Patrick Wong, Oct 30, 2019
    Yogi Beer likes this.
  4. Yogi Beer

    Yogi Beer Junior Member

    Joined:
    Aug 13, 2019
    5
    0
    0
    Location:
    Florida
    Vehicle:
    2008 Prius
    Model:
    Base
    Thank you !
     
    #4 Yogi Beer, Feb 8, 2021
  5. Yogi Beer

    Yogi Beer Junior Member

    Joined:
    Aug 13, 2019
    5
    0
    0
    Location:
    Florida
    Vehicle:
    2008 Prius
    Model:
    Base
    Followed your directions and it was perfect
    Many thanks
    Yogi
     
    #5 Yogi Beer, Feb 8, 2021
  6. Aegean

    Aegean Active Member

    Joined:
    Aug 18, 2019
    441
    194
    0
    Location:
    Alexandria VA
    Vehicle:
    2006 Prius
    Model:
    ----USA----
    I replaced the water pump in 2011 with just the paper gasket and no sealant. Still no leak.

    However, I need to replace the water pump again since the weeping hole shows pink dry staff. I bought the Cardone water pump 10 years ago from rockauto and it had lifetime warranty. I hope they still honor it. I used the pump only 95000 miles.
     
    #6 Aegean, Feb 12, 2021
(You must log in or sign up to post here.)