112-0186 Used STD Piston in very good condition. Casting number 112-0163 Fits many B & P Series Onan engines with 3 1/4" bore.
This piston uses the early wide style rings, .078" thick or 5/64 Part Number 113-0314
This piston will only match with another piston having casting number 112-0163 and looks exactly like the one pictured here.
There is another piston style different than this one but still using the same 112-0163 casting number.
Onan made at least five piston design changes for the B & P Series engines over the years. If you use a pair that are not identical your engine will be out of balance!
Made in U.S.A.
Models listed are for general reference only and do not guarantee this part will fit your specific application.
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