Prius head gasket job - broken cam bolt

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by ComfyBag, Apr 5, 2026 at 5:30 PM.

  1. ComfyBag

    ComfyBag New Member

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    Hoping someone can help me out here.. I’ve been watching all the videos online and following along the nutsaboutbolts on Yoruba for a head gasket replacement. Everything was going well, but during the reinstall, when I was torquing the first cam bolt, it snapped! Fortunately I was able to back it out but I’m not positive what the part number is for the replacement (2012 Prius V) I did use new head bolts but none of the guides online mentioned purchasing new cam bolts (the 17 gold bolts holding the camshaft cap)

    1. Should I purchase all new bolts?
    2. Does anyone know the Toyota part numbers for the 16 long bolts, and the 1 short bolt?

    thank you in advance, this forum has been a lifesaver.
     
    #1 ComfyBag, Apr 5, 2026 at 5:30 PM
  2. Mendel Leisk

    Mendel Leisk MMX GEN III

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    #2 Mendel Leisk, Apr 6, 2026 at 7:12 AM
  3. Tombukt2

    Tombukt2 Senior Member

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    Just replace the cam bolt you mite find at tractor supply . Not mission critical . Just a bolt. As you found out . Junk yard . A shop floor etc .
     
    #3 Tombukt2, Apr 6, 2026 at 7:42 AM
  4. Mendel Leisk

    Mendel Leisk MMX GEN III

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    What torque value? Screen grab from last link in my signature*:

    IMG_3583.png

    * on a phone turn it landscape to see signatures
     
    #4 Mendel Leisk, Apr 6, 2026 at 9:01 AM
  5. ChapmanF

    ChapmanF Senior Member

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    If you don't get the specific bolt from Toyota, make sure to get the same length and grade so it'll stand up to the same torque conditions.
     
    #5 ChapmanF, Apr 6, 2026 at 11:11 AM
  6. ComfyBag

    ComfyBag New Member

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    Thank you so much! I was torquing to 20ft lbs. I’m thinking my torque wrench was off or malfunctioning.
    Just ordered a new one as well so hopefully it won’t happen again.
     
    #6 ComfyBag, Apr 6, 2026 at 12:37 PM
  7. ComfyBag

    ComfyBag New Member

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    Thanks! I decided to order from Toyota as I need to pick up a new timing tensioner anyway.
     
    #7 ComfyBag, Apr 6, 2026 at 12:38 PM
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