RIVA Sea-Doo 4-TEC 1503/1630 Replacement Engine Sleeve
Our high-quality ductile iron replacement sleeves are considerably harder and more abrasion resistant than OEM sleeves providing excellent oil retention, ring seal and the ultimate in leak down performance. Accepts pistons for stock bore (99.94mm) up to 100.44mm (2nd Over). Can be used in 1503 & 1630 4-TEC engines. Sold individually.