Rings, Piston - Mercury / Mariner 150-175hp 2.5L Optimax
These are the same or better than OEM! These are Riken Rings!
These rings are intended for OE style cast pistons. Cannot be used on Wiseco pistons!
Standard Bore size is 3.501"
Our pistons are sold with the rings included, so if you need the piston also see the "Related Products" tab.
Sold by the Pair - 2 rings for one piston
Mercury / Mariner
150 / 175hp 2.5L Optimax DFI (s/n OT178500-Up)
To order, select the size desired from the dropdown then enter the quantity and click "add to cart". Most standard and oversize pistons are in stock however some sizes may be on a short backorder from time to time. Please don't hesitate to contact us for assistance.
May fit additional models to those listed above. Please DO NOT order based solely on application info above. You MUST compare the oem number of the part for your engine to those listed below to ensure correct fitment of this part for your application! Failure to order this way will likely lead to the wrong part being ordered!
Replaces: 39-877544A12, 39-878106A12