Electric Fuel Pump Assembly Replacement For Volvo Penta 21608511 21545138 4.3L 5.0L 5.7L for 4.3OSI 4.3GXI 5.0OSI 5.0GXI 5.7GI 5.7GXI 5.7OSI 5.7OSXI 3594444 213977771 3861355 3860210 Item Description About this item #1. supply line from high pressure pump #2. return line from fuel rail #3. vent line, line going up to your intake manifold #4. circulating water line #5. fuel line from gas tank #6. high pressure pump socket #7. low pressure pump socket #4. circulating water line #10. circulating water line (including 17.5'' hose) OEM part numbers: 21608511/ 21545138/ 21397771/ 3594444/ 3861355/ 3860210 compatible with Volvo Penta 4.3GXI/ Volvo Penta 4.3OSI/ Volvo Penta 5.0GXI/ Volvo Penta 5.0OSI/ Volvo Penta 5.7GI/ Volvo Penta 5.0GXI/ Volvo Penta 5.7OSI/ Volvo Penta 5.7OSXI Symptoms of wear or malfunction: 1. The whining noise of the fuel tank / 2. Difficulty starting / 3. Engine sputtering / 4. Stall at high temperature / 5. Power loss under pressure / 6. Low fuel consumption ? See more product details *#3. vent line, line going up to your intake manifold Marine fuel pumps are necessary for engine operation. This Electric Fuel Pump Assembly is actually made of two pumps along with a fuel reservoir. Gas is required for engine operation, and the fuel pump provides gas under pressure to ensure smooth and efficient operation of the engine. The low-pressure pump draws from the tank and fills the condenser. The high-pressure pump draws from the condenser and feeds the injection system at a much higher pressure. #10. circulating water line (including 17.5'' hose) OEM part numbers: 21608511/ 21545138/ 21397771/ 3594444/ 3861355/ 3860210 1. The whining noise of the fuel tank / 2. Difficulty starting / 3. Engine sputtering / 4. Stall at high temperature / 5. Power loss under pressure / 6. Low fuel consumption Install the electric fuel pump on the Bracket with four bolts. Connect #3 to hose dotted in red (the smaller diameter hose) Connect #4 to hose dotted in yellow (the larger diameter hose) Connect #1 to fuel line dotted in yellow (the larger diameter fuel line connector) Connect #2 to fuel line dotted in red (the smaller diameter fuel line connector) Connect #6 to electric connection dotted in yellow (the shorter line) Connect #7 to fuel line dotted in red (the longer line) Fill the fuel filter, put the oil on the gasket and on the seat. Prime the pump by turning the key on off 5-10 times hearing the sound of pump set working. Payment We accept payment only through PAYPAL Shipping We ship products worldwide through standard express courier service, it will reach within 7 to 10 days to abroad buyers, we ship the product after recieved clear payment and give full information about shipment to the buyer Return We accept product return 25 days from delivery date but product should be in original condition.