Power Trim Actuator Motor Assembly 21573834 for Volvo Penta DPS-A & DPS-B model Sterndrives, 10509870OEM Part Number 21573834 3848796 3884407 21945915 Fit for the Following Models Fits Volvo Penta SX A, DPS A, & DPS B model Sterndrives. For SX A, DPS A, DPS B, DPS A OXI, DPS B OX, SX A 1. 43, SX A 1. 51, SX A 1. 60, SX A 1. 66, SX A 1. 79, SX A 1. 89, SX A 1. 97, SX A 2. 18TSK A 42, TSK A 32, TSK A AC 52, TSK A AC 42, TSK A AC 32, TSK A 32 NPT, TSK A 42 NPT, TSK A 52 NPT, TSK A AC 32 NPT, TSK A AC 42 NPT, TSK A AC 52 NPT, TSK B 52, TSK B 42, TSK B