I was wondering which crush washer i needed to replace when doing a differential fluid change. I went to the dealer and the database showed two different crush washer that go on the rear diff, a copper colored one and a silver one. I went ahead and bought both, so which one is it??

also do i replace the filler plug washer or drain plug washer?? or both??

 

If you have two new washers, use both of them. One is for the fill and one is for the drain.

 

Copper colored one is for fill.

 

i think ill just replace both, thanks guys

 

Don't over torque them and you can use them many times.

 

thanks, ill keep that in mind

 

I think my friend used his crush washer a few too many times ...




I replace them at each fluid replacement as their crushing action helps me gauge when the plug is sufficiently tightened. As a practical matter they can be re-used a few times, but they are inexpensive enough to replace each time.

 

Man, that is REALLY bad. My copper colored one looks something like that after about 4 or 5 fluid changes, but my aluminum one has never looked like that. I think there has been an over torque on that one. It's a very large bolt for such a thin casing. The printed torque spec is about the maximum I'd ever use.

 

Hmm.....
When I asked for a diff fill & drain washer I got 2 the same aluminum washers.
Part # 90471-PX4-000.
They both fitted no problem.

Is there a specific reason to use a copper one for the filler bolt?

The fill & drain washer on the gearbox are both aluminum right?
Different sizes there.

 

I don't know why the diff fill bolt washer is a copper type. Size wise, it's the same as the drain bolt, so an aluminum one will fit the fill.

As you can see from this site, they are different part numbers:
http://www.slhondaparts.com/browse.asp?Mod...&ViewParts=true
(click on part number 24 and 25)

All other washers (oil drain, tranny drain and fill) are aluminum.