Piston Kit, Cast - Mercury, Mariner 150-200hp, XR6, XRI, Sport Jet

Cast Piston Kit

Standard Bore Size (3.500")

These pistons are available in Port and Starboard in sizes STD, .010", .015, .020", .030" and .040" oversize

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.

For top guided carbureted and EFI engines with connecting rod # 644. This piston cannot be used with DFI applications.

Fits:

Mercury / Mariner

150hp 1998-02
150hp XR6 1993-04
150hp XRI 1992-03
175hp 1992-00 2.5L
175hp 1992-00 2.5L XRI
200hp 1992-00 2.5L
200hp 1992-00 2.5L XRI
200hp 1992-00 2.5L EFI

Sport Jet

Many 150-210hp Carb & EFI Jetboats 1997-2003 with a Mercury 2.5L Powerhead

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: 785-9737T9, 785-9737A9, 785-9737A10, 9738T10, 9738T9, 9738A7