Current purchase options for replacement ABS actuator?

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by pwyu1969, Jun 8, 2026 at 1:46 PM.

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  1. pwyu1969

    pwyu1969 Junior Member

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    Hi all,
    Newish to Prius and this forum. I bought my brother-in-laws 2007 Prius a couple years got for my teenaged kid. It has 240k miles, newer tires, new 12v battery and hybrid battery at 68% life expectancy based on Dr Prius app.

    I confirmed via Just Answers and Reddit that ABS actuator is going out. I also found enough YouTube videos to be able to do the work myself. The rub is where to buy used from? Or what to look for? I know that actuator that ends in -50 are the bad ones. Some end in -90, -51, and -40 I think. Anyone have any advice or thoughts on where/how to source one. Or if there is an existing thread I should look at.
     
    #1 pwyu1969, Jun 8, 2026 at 1:46 PM
  2. JC91006

    JC91006 Senior Member

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    The part you are looking for ends in 51. That's the updated part. You have to do searches for that part, ebay, wrecking yards, etc
     
    #2 JC91006, Jun 8, 2026 at 9:30 PM
  3. ChapmanF

    ChapmanF Senior Member

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    Because of Toyota's penchant for having numbers you can see on parts that aren't their part numbers, there can be lots of confusion here.

    Adding another layer, when you go to a Toyota dealer, you generally have to order the part by its actual part number. (Then you might take it home and open the box and see the other number on the part, the one that isn't its part number.) On the other hand, many recycled part sellers don't know any better, and list the part for sale using the number they see on it, so that might be the number you have more luck with to order from them. (Assuming that visible number was only ever used with the actual part number you want, which is a lot to assume.)

    The various different gen 2 actuator part numbers have different suffixes, but they have a 44500- prefix.

    The confusing non-part-numbers that people keep seeing on gen 2 actuators, and mistaking for the part numbers, have a 44510- prefix.

    More on that in ➡this thread⬅.
     
    #3 ChapmanF, Jun 8, 2026 at 9:56 PM
  4. pwyu1969

    pwyu1969 Junior Member

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    Excellent, thanks so much. Also, can you share your thoughts on the ‘matching’ resistor? Seems like most of the instructional videos don’t do that and when the they are tested the new and old come back with the same ohm readings. Is changing resistors a precaution or is there really some kind of pairing, like ECU units etc.
     
    #4 pwyu1969, Jun 8, 2026 at 9:57 PM
  5. pwyu1969

    pwyu1969 Junior Member

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    Okay, so I just found and ordered on eBay a 44510-47051 which is on the sticker on the actual part. Assuming that is what is sent to me, that is the correct part?
     
    #5 pwyu1969, Jun 8, 2026 at 10:02 PM
  6. ChapmanF

    ChapmanF Senior Member

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    It could be. Here's a listing looked up by the correct part number, and you can see in one of the photos it has a sticker with your number on it.

    https://toyota.oempartsonline.com/oem-parts/toyota-actuator-assembly-brake-4450047141

    To be sure you've got the right part, you'd have to assume that the same non-part-number you see only ever appeared on one part, namely the one with the right part number.

    That can be a lot to assume (the number could be on a casting or cover that was used on multiple versions of the part), but for these gen 2 actuators it might happen to be true. Plenty of posters seem to think so.
     
    #6 ChapmanF, Jun 9, 2026 at 9:28 AM
  7. pwyu1969

    pwyu1969 Junior Member

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    Ok, I see what you mean by the listed ‘catalog’ part-number and the part-number on the actual part. On the website/catalog it’s listed as 44500-47141. But on the physical part itself the sticker is 44510-47051. Here’s a picture of mine from eBay. It looks to have the same sticker so I may have hit the actuator lottery and found the updated version, which I assume has a higher probability of being a good part.

    Thanks so much for this info. TBH after watching 3-4 different install videos I felt better about actually doing the job, but finding the right one on the used market then became my concern. A ton of -05 ones out there with a bunch of different numbers I was told to buy from different websites.

    So it seems like the -05 were the faulty ones. Do you know if there was a model year that Toyota eventually started installing the fixed -51 actuators or did the issue start popping up after they switched to Gen3 models so that the -51 actuators was installed by dealer service? I know the one I have on order is used, so just curious is it means it’s from a car that went thru the fix or if it was from like a later 2009 model?
     

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    #7 pwyu1969, Jun 9, 2026 at 10:02 AM
  8. ChapmanF

    ChapmanF Senior Member

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    When there is a number visible on a part that isn't the part number, it isn't the part number. It's just a number that's visible on the part. This happens quite often with Toyota parts.

    So, you have a number that's visible on the part you got that's the same as the number that's visible in a photo of the correct part. That's a good sign (at least better than having the numbers be different). Still, that's a number that isn't the part number. Calling it the part number sets up confusion for other people who might come to PriusChat later and be reading the thread.
     
    #8 ChapmanF, Jun 9, 2026 at 10:08 AM
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