ITEM NAME:12mm Black Bulb Type Rubber Fuel Transfer Vacuum Fuel Line Hand Primer Pump Description: This fuel primer bulb is perfect 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. For introducing fuel into the fuel pump after replacement of the . 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. Frequently used as a hand pump in boats for fuel supply to the out-board engine. Specification: Material: Rubber And Aluminum Color: Black Input connectors: 12mm Length (overall): Approx. 150mm/ 5.91inch Package Includes: 1 Piece Fuel Line Pump Note: The color may have different as the difference display, pls understand. Please allow 1-3mm error due to hand test. SKU: MNF0007080660013937.Simple and effective tool for priming diesel engines on cars, motorcycles and boats. Input connectors: 12mm. Jewelry Findings |Health & Beauty |Wedding Decoration |Sports and Outdoors |Jewelry & Watches |Clothing, Shoes, Accessories |Other.