Ring Set, Piston - Mercury, Mariner 75-300hp DFI
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 3.6265"
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
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
75hp 1.5L Optimax / DFI
90hp 1.5L Optimax / DFI
115hp 1.5L Optimax / DFI
200hp 3.0L Optimax / DFI (serial OT599000-Up with oval pocket on top of piston)
200hp 3.0L XS / Pro XS DFI (serial OT599000-Up with oval pocket on top of piston)
225 / 250hp XS / Pro XS DFI
250hp 3.0L Optimax (oval pocket on top of piston)
Seadoo Jet Boats
Challenger 250 2002-04
Challenger 250 X 2003-05
Islandia 250 2004-05
Utopia SE 250 2002-05
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: 39-827179A12, 38-858772A02, 827179A12, 39-875252A12