Mercury Mercruiser 140 Chevy Marine 3.0 3.0L 181 Dish Top Pistons Rings Kit (4.020" Bore) CLICK ON BOX FOR OVER SIZE NEEDED BEFORE ADDING TO CART RING LANDS: 5/64"-5/64"-3/16" COMP. DISTANCE: 1.625" PIN DIAMETER: .928" All pistons include piston pins