This oil pressure sensor is suitable for Volvo Penta D1 and D2 series marine diesel engines. It replaces Volvo Penta OEM part numbers 21250645, 3808796 and 3847889 . This is a high-quality replacement part (non-genuine Volvo Penta). Replaces Volvo Penta OEM Numbers 21250645 3808796 3847889 Compatible Volvo Penta Engines D1 Series D1-13 D1-13B D1-13F D1-20 D1-20B D1-20F D1-30 D1-30B D1-30F D2 Series D2-40B D2-50F D2-55D D2-55E D2-55F D2-60F D2-75B D2-75C D2-75F Questions about compatibility or installation? Our marine specialists are happy to help.