Pro Piston Kit Std. Port Mercury 2.0L Bottom Guided Bore 3.125 Pro # 8000P Cross Ref #: 765-7442T36 14110, 18-4510, 6309A3, 6520A3, 7055A3, 7227A3, 7442A3, 7442A36, 7442A9, 7442T36, 7448A3, 9-53268