3 Wire Trim Sending Unit SX, DP-S, DP-SM | Volvo Penta 3849411 Volvo 3 Wire Trim Sending Unit SX, DP-S, DP-SM | 3849411 Original Volvo Penta sending unit for standard trim gauge. Volvo Penta trim sending unit Analog signal for typical trim gauge Not for use with Volvo Penta digital gauge with lights Used 1996 thru 1998 earlier production models NC, LK, BY 3 wire 0 to 160 ohms Original Volvo Penta Replaces OMC 3855535 Replaces Volvo 3849413, 3855535, 3863007