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Catalytic converter assembly gasket identification help

Discussion in 'Prius v Care, Maintenance and Troubleshooting' started by bkepler, May 8, 2024.

  1. bkepler

    bkepler New Member

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    For my '13 prius v, are the gaskets the same on the upstream and downstream side of the catalytic converter section of exhaust pipe? The part numbers i found were 17451 and 17451A(downstream). When I tried to search gasket part on a couple toyota parts online stores, they show up with a variety of different numbers trailing the 17451 number or none at all. Trying to make sure I have they right ones before ordering the whole cat section. Unless it comes with the 17410-37553 catalytic converter section of the exhaust system. Any help appreciated.
     
  2. rjparker

    rjparker Tu Humilde Sirviente

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    Checking the McGeorge Toyota site

    IMG_5022.jpeg
    and

    IMG_5023.jpeg

    However I believe you can reuse the old seals unless they are rusted.

    Before I would spend $1800-$2000 all in on a factory cat I would consider the Walker 16649 EPA Ultra. Except Calif Colorado and NY which require oem.

    Rock Auto sells them for $450, Amazon gets $730.

    IMG_5024.jpeg IMG_5025.jpeg

    I have seen good results on Prius as have others. The lifespan may not be 12 years but I suspect oil burning is the usual root cause which should be addressed before spending that much on an oem cat. If it’s going to clog again anyway consider the Walker.

    A shop would need to reuse your Exhaust Heat Recirculation System by cutting off the old two piece cats.

    Prius v catalytic converter cat.jpeg
     
  3. rjparker

    rjparker Tu Humilde Sirviente

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    Here is a video on the oem cat.

     
  4. douglasjre

    douglasjre Senior Member

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    Seals r diff. I have em both here. $220 for the pair new in bags plus shipping takes em
     
  5. bkepler

    bkepler New Member

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    Thanks for verifying.

    Pennsylvania, cars(Light Duty Vehicles I believe) with emission stickers showing California/CARB are required to be replaced with like kind, California/CARB certified catalytic converters or OEM from the manufacturer. Despite being required, not all counties require emissions testing and those that do just require gas cap test and obd2 check. No visual checks required for light duty vehicles. So at your own risk I guess.

    I found a Toyota dealer with online parts site to be the least expensive option for buerocratically approved ones.. Less than NAPA and others stores. Even less than the individual cats for welding in place.

    The EPA certified cats will do the same thing, just warrantied to 25k miles versus 50k miles of the Cali/CARB certified ones. Our 'free' market at work :-/
     
    #5 bkepler, May 14, 2024
    Last edited: May 14, 2024
  6. douglasjre

    douglasjre Senior Member

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    Your last paragraph is a belief that is founded on a lack of knowledge. OEM cat is far higher quality aftermarket cats like walker are a waste of money but you don't understand why.....
     
  7. bkepler

    bkepler New Member

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    So oem has specialized manufacturing process/material recipe for the cat exchange material that is potentially patented thereby limited to their use? I would believe that.

    Do you know if there really much difference between epa and california cert aftermarket cats or different design & materials?
     
  8. douglasjre

    douglasjre Senior Member

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    Aftermarket cats don't meet vehicle specs and the Money Indicate Light (MIL) will appear