Seems quite stupid to (1) either have to go to HD to get replacements, or (2) take the o-ring(s) to a hardware store and try to match to the correct size to a goofy little chart that doesn't provide one a lot of confidence that the match is exact.

So, does anyone know of a chart that gives the exact o-ring specifications for 2006 (or similar year) Ultra that will replace the HD o-rings? I find it hard to believe that nowhere does such a chart exist. I believe many others on this forum would also like to know this and not have to make a guess at the hardware store.

Thank you.

Perhaps I was not clear enough. O-rings come in sizes just like bolts do. There is nothing special about a Harley o-ring. So let's say that the HD engine drain plug o-ring is this: Standard number: -013, ID 7/16, OD 9/16, CROSS SECTION 1/16. Then, I could just go to the hardware store and get the exact replacement. Now, does anyone know if there is a chart available that lists the generic o-ring equivalent for Harley's o-rings?

 

Check out this thread. I get mine from dawg. I usually grab a handful from his stash when he's not looking.

 

There's a past post somewhere that lists an item # for the o rings at Home Depot.

 

Take your drain bolt to Menards or Home Depot and match it up !!!

 

I bought a box of assorted o rings from Harbor Fright. They have always worked just fine.

 

Same here. They work just fine. It's not rocket science.

 

Home Depot plumbing section Danco #8 and #13. Drew

 

Just make sure the ones you get are oil compatible. Some plumbing ones in a hardware store are only for sealing water and sewage. Viton and neoprene are the best for petroleum products.

 

The OP wanted a cross reference for o-rings. I too am wondering if there is one somewhere, not just for the drain plugs o-rings, but for all of the various o-rings used internally in the engine, tranny and primary.

 

If they are the same size as the '09 the LOwe's part # is 0576 in the plumbing section $.58 for three.