Sea-Doo › Sea-Doo 1503 4-Tec Top End Rebuild Kit (Standard) Image 1 of 1 Sea-Doo 1503 4-Tec Top End Rebuild Kit (Standard) $745.71 Standard rebuild kit restoring factory compression and performance. Add To Cart Added! Standard rebuild kit restoring factory compression and performance. You Might Also Like Sea-Doo 900 Top End Rebuild Kit (Standard 74mm) $565.43 Sea-Doo 580 Top End Rebuild Kit (.5mm Over Platinum, 76.50mm 1992-1996) $197.38 Sea-Doo 1503/1630 4-Tec Top End Rebuild Kit (100.46mm) $546.83 Sea-Doo 580 Top End Rebuild Kit (.5mm Over Platinum, 76.50mm) $258.46 Sea-Doo 580 Top End Rebuild Kit (.5mm Over, 76.50mm 1992-1996) $180.20