Exhaust "donut" gasket, :
exhaust donut gasket just before the muffler is part number 7030-021002, "Collar, Big". It can be substituted with a Polaris part number 3610047. Verified that the two parts have the same diameter inside and out for a 2015 Zforce 800. This part number can be purchased aftermarket for a fraction of Polaris OEM pricing, but more importantly, it can be had quickly.

I recently bought a '15 Z800 and read quite a bit about the thermo fan switches failing. Being that I have little background on my machine and the seller said it "ran hot" once, I wanted to find a replacement that may be more reliable. I located this part number:

Beck-Arnley: 201-1611

It fits a 89-91 Geo Metro with 1.0L engine.

This replacement is the same size, same connector. On at 203, off at 185.

[2015 Z Force 800 53/Trail EPS]

Thanks. Good to know.