New aftermarke Premium JSP Brand OE quality SeaDoo 4-Tec head gasket Sea-Doo 4-Tec Cylinder Head Gasket Kit Seadoo GTX RXP RXT WAKE LTD GTI HO 255 420950770 & 420950771 420-950-770 420-950-771 SBT 60A-112 New aftermarke Premium JSP Brand OE quality SeaDoo 4-Tec head gasket. Replaces SeaDoo part numbers 420950770 & 420950771 420-950-770 420-950-771 SBT 60A-112 Fits ALL SeaDoo 4-Tec models with 130, 155, 185, 215, 255 & 260 HP 1503cc engines. Top quality multi-layered metal head gasket like the OE SeaDoo part. NOTE: WILL NOT fit the new 2016 and newer 300 HP 1630cc ACE engine. ModelsYears GTI 4-Tec All Sizes & VersionsALL YEARS GTX 4-Tec All Sizes & VersionsALL YEARS RXP 4-Tec All Sizes & VersionsALL YEARS RXP-X 4-Tec All Sizes & VersionsALL YEARS RXT 4-Tec All Sizes & VersionsALL YEARS RXT-X 4-Tec All Sizes & VersionsALL YEARS Wake 4-Tec All Sizes & VersionsALL YEARS Challenger 4-Tec All Sizes & VersionsALL YEARS Speedster 4-Tec All Sizes & VersionsALL YEARS Sportster 4-Tec All Sizes & VersionsALL YEARS Utopia 4-Tec All Sizes & VersionsALL YEARS