Rings, Piston - Mercury, Mariner 200-250hp 3.0L DFI
Piston Rings Set
These are the same or better than OEM! These are Riken Rings!! They will fit OE style Cast pistons...will not fit Wiseco Pistons!
Standard Bore size is 3.6265"
If you need pistons for this engine we carry those too!
Sold by the Pair (2 rings for one piston)
These rings are usually available in STD Bore, .010", .015", .020", .030" and .040" Oversize. To order, select the size desired from the dropdown (under "product options") then enter the quantity and click "add to cart". Most standard and oversize rings 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.
Mercury / Mariner
200-250hp 3.0L DFI Optimax
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: 39-834805A12, 39-858772A12, 39-875252A12, 39-875257A12