Serpentine belt driven raw water pump used on some Crusader 5.7L MPI engines that bolts to the engine. Raw Water Pump Serpentine, 5.7 liter | Crusader RA057034 Block mounted raw water pump used on some Crusader 5.7L MPI engine models Serpentine belt driven Stainless steel construction Pulley not included Uses impeller kit RP061022 Replaces Pleasurecraft Marine RA057034