Mounting in the bottom of the fuel filter The sensor detects water in the fuel For Volvo Penta D3 D4 D6 Fuel Sensor Part Number: 3808616 874572 Compatible with Volvo Penta Models: D3, D4, D6 Replaces Part Numbers: 3808616, 21139810 Compatible with the following Volvo Penta engines: D3-110I-A, D3-110I-B, D3-110I-C, D3-110I-D, D3-110I-E, D3-130A-A, D3-130A-B, D3-130A-C, D3-130I-A, D3-130I-B, D3-130I-C, D3-140A-D, D3-140A-E, D3-150I-D, D3-150I-E, D3-160A-A, D3-160A-B, D3-160A-C, D3-160I-A, D3-160I-B, D3-160I-C, D3-170A-D, D3-170A-E, D3-170I-D, D3-170I-E, D3-190A-B, D3-190A-C, D3-190I-A, D3-190I-B, D3-190I-C, D3-200A-D, D3-200A-E, D3-200I-D, D3-200I-E, D3-220A-D, D3-220A-E, D3-220I-D, D3-220I-E D4-180I-B, D4-180I-C, D4-180I-D, D4-180I-E, D4-210A-A, D4-210A-B, D4-210I-A, D4-210I-B, D4-225A-B, D4-225A-C, D4-225A-D, D4-225A-E, D4-225I-B, D4-225I-C, D4-225I-D, D4-225I-E, D4-260A-A, D4-260A-B, D4-260A-C, D4-260A-D, D4-260A-E, D4-260D-B, D4-260D-C, D4-260D-D, D4-260D-E, D4-260I-A, D4-260I-B, D4-260I-C, D4-260I-D, D4-260I-E, D4-300A-A, D4-300A-C, D4-300A-D, D4-300A-E, D4-300D-A, D4-300D-C, D4-300D-D, D4-300D-E, D4-300I-A, D4-300I-C, D4-300I-D, D4-300I-E Material: Plastic Color: Black Package Includes: 1 x Water Sensor Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting and display differences may cause slight variations in color between the product image and the actual item. Measurement may vary by 1-3 cm.