These rings will fit all Mercury 6 Cyl. 140 HP 78-81 Inline 6 Cross Flow W/Boost Port Low Dome . WSM Rings are top quality RIK Japanese high performance rings. Will fit OEM factory pistons.
Wiseco rings will fit Wiseco forged piston only.
Ring set includes:
1 Top ring
1 Bottom ring
O.E. No. 39-817096A6
This ring set will fit the following applications only,
Mercury 6 Cyl. 140 HP 78-81 Inline 6 Cross Flow W/Boost Port Low Dome
