2nd gen oil cooler washers
 

Ready to install my 2nd gen cooler in my 85 GS and wanted to double check the washers/o-rings needed for installation. I found the washers on mazdatrix for the cooler but what about for the motor end? Same deal?

9956-41-800 or 9956-21-800 one is AL and one is copper, i forget which number is which, aluminum is the expensive one and copper is the astoundingly expensive one

Are those mazdatrix part numbers? Could not seem to find anything on them

Mazda part numbers, Mazda trix inverts the number, so it'll be 21-800-9954.

The long line will use the same copper washers as the oil cooler side since the banjo bolts are all the same.

Each banjo bolt needs 2 of the copper washers so you'll need 6 of those total

You will need one of the aluminum washers for the fitting on the front cover.

That should be everything :)