1pcs Fuel Bulb Marine Hand bulb primer to suit petrol of diesel comes with a one way installed to help quickly prime the fuel system Frequently used as a hand pump in boats for fuel supply to the out-board engine. This fuel primer bulb is for vehicles without ESP-priming, using 1 or 2-tank systems, as well as for the transfer of vegetable oil, diesel, it is most commonly used on outboard or inboard boat engines. Feature - Color: Black - Material: Rubber and metal - Total Length: Approx. 147mm - Interface diameter: 8mm Inner diameter: 5.6mm - Hand bulb primer to suit petrol of diesel comes with a one way installed to help quickly prime the fuel system - Frequently used as a hand pump in boats for fuel supply to the out-board engine - This fuel primer bulb is for vehicles without ESP-priming, using 1 or 2-tank systems, as well as for the transfer of vegetable oil, diesel, it is most commonly used on outboard or inboard boat engines. - Simple and effective tool for priming diesel engines on cars, motorcycles and boats. - Connects to any length of hose, easy to use. One-way only function - The pump is temperature resistant up to -30 -130 C Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.