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I have a Honda Accord 2004 (https://honda-europe.epc-data.com/accord/2004_6mt/2895/).

I bought new front brake calipers for it with brake fluid bolt.

Somehow the bolt doesn't fit into the caliper though. I'm unsure what I'm doing wrong.

Brake Caliper: 45001-SEA-E01 (front left) - TRW (https://www.trwaftermarket.com/de/catalogue/product/BHX523E/)

Bolt: 46462-SE0-000 (https://www.akr-performance.de/p/honda-bremsschlauch-bolz-46462-SE0-000)

As far as I can tell, these numbers are correct.

I had a similar problem with rear calipers - also TRW brand, where the old bolt on the car did not fit into the new caliper.

What could be the problem? Should I try to buy a different brand?

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When I replaced the front calipers on my 2011 Honda Accord I found that all of the calipers readily available at local auto stores were refurbs and the hole which accepts the banjo bolt was threaded differently compared to my original bolt.

enter image description here

Replacement bolts which would work in the hole were also of different shaft diameter so I had concern that this would cause restrictions in the brake fluid and ultimately cause some sort of failure or performance loss.

enter image description here

You need to get a true OEM caliper from an authorized dealer.

Since it was a weekend, the dealerships were closed but I ended up finding a knowledgeable person at Napa Auto Parts that was able to special order a non-refurbished caliper; this costed 3x the normal price of a refurb.

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  • Thanks for the answer. I can't understand why would manufacturers do this? Why have a different diameter for the bolt? It doesn't make any sense...??? Mar 3 at 18:54
  • @DávidMolnár See my update with pictures.
    – MonkeyZeus
    Mar 3 at 19:05
  • @DávidMolnár If my answer helped you then please consider marking it as "accepted" :-)
    – MonkeyZeus
    Mar 3 at 19:10
  • I'm not really sure where you've gotten the idea that a "refurb" in general won't do the job. Remember, a refurbished part (like a caliper) starts off as an OEM part, which is then refit with parts to make it good as new. I'm not saying your part didn't fit right or that the bolt didn't work, I'm saying a refurbished caliper starts out as a worn out OEM part. It's not like they intentionally went in and recut the threads to make them not fit your bolt. More than likely, the OEM changed the banjo bolt dimensions between years but didn't change the exterior dimensions of the caliper itself. Mar 3 at 21:15
  • @Pᴀᴜʟsᴛᴇʀ2 Sorry to have pigeon-holed the situation but that was a rough weekend in my books especially since I couldn't miss work on Monday. If my expectation of OEM to be plug-n-play in my Honda's OE components is misguided then please let me know. This issue has clearly affected someone else. If I recall correctly then it was visible on the refurbed caliper that it was in fact re-threaded; all of them, regardless of AutoZone, Advance Auto, or Napa.
    – MonkeyZeus
    Mar 4 at 1:32

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