These rings will fit all Mercury V-6 Cyl. 150-175 hp 2.5 Liter DFI OT178500-Up. 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. 858772A12
This ring set will fit the following applications only,
Mercury 150-175 hp 2.5 Liter DFI OT178500-Up
Serial # Required for purchase
