Replacement part number：603988 (Compatible with Hustler Raptor 603988 42"& 52" decks ) Compatible with Hustler Raptor models:931881,931899 KAWASAKI FR691 (23HP),932004US,933077 KAWASAKI FR691 (23HP),934414 KOHLER 7000 SERIES W/SMART CHOKE (24HP),934513US – HTRTRS052KOHKT735U,934794 – HTRTRS052KOHKT735M,935759 – HTRTRS052KOHKT735A,935817 – HTRTRS052KOHKT735M,937755 – HTRTRS052KOHKT735A,937763 – HTRTRS052KAWFR691VA Compatible with Hustler models: 931741 HTRTRS042KAWFR651VA,931881 HTRTRS052KAWFR691VA,931899 HTRTRS052KAWFR691VA,931998US HTRTRS042KAWFR651VU,932004US HTRTRS052KAWFR691VU Compatible with Raptor Limited models:934802 – HTRTLS052KOHKT735M,934893 KOHLER 7000 SERIES W/SC (24HP),936492 – HTRTLS052KAWFR691VA,936500 – HTRTLS052KAWFR691VM,937771 – HTRTLS052KAWFR691VA,937862 – HTRTLS052KAWFR691VM,938613 – HTRTLL052KAWFR691VA Compatible with Hustler Raptor models:937813 – HTRTRS052BASPROM44U7M,937854 – HTRTRS052KAWFR691VM,938597 – HTRTRL052KOHKT735A,938605 – HTRTRL052KAWFR691VA,939165 – HTRTRL052BASPROM44U7M,939223 – HTRTRL052KAWFR691VM Compatible with Raptor Limited models:934802 – HTRTLS052KOHKT735M,934893 KOHLER 7000 SERIES W/SC (24HP),936492 – HTRTLS052KAWFR691VA,936500 – HTRTLS052KAWFR691VM,937771 – HTRTLS052KAWFR691VA,937862 – HTRTLS052KAWFR691VM,938613 – HTRTLL052KAWFR691VA