ITEM NAME:Check Valve Fuel crude oil engine valve Aluminum (8mm) B9R5 Check Valve Fuel crude oil engine valve Aluminum (8mm) B9R5 Material: high quality aluminum Color: As shown Amount: 1 pc Size: 8mm Function: Avoids the fuel returning to the reservoir and keeps it in line. Mounting: Install low-pressure power systems and carburettor The package contains: 1 X fuel return valve Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.