I was just about to order some new crush washers from Mazdatrix for my new oil cooler and lines I am about to install, but I am a little confused here. The wording on Mazdatrix's site is a throwing me for a loop on which parts I need for my car, 84 GSLSE with a regular SE cooler.

http://www.mazdatrix.com/b6.htm

Now if I'm reading that right, for an 84 SE I need 2 of washer # 41-8000-9956 and 3 of washer # 41-6000-9956. Is that correct?

 

Looks like you have it figured out. The front cover fitting uses the same sealing washer as the 1st gen FMOC. 3 total. Along with 2 for the rear banjo bolt.

I went with a FC FMOC, so I just needed 6 banjo bolt washers. Got those at a local parts house.

 

Excellent. Thanks for the clarification.