Dimension manifold intake diameter:30mm/1.18",manifold outter diameter:36mm/1.41",air intake mount outer diameter:50mm/1.97".. Replacement for 250cc BMS Lance Joyner scooter. Atomizes the fuel and air mixture to provide combustion power to the cylinder.. The strong build of the carburetor should allow it to last for a lengthy amount of time,Perfect air flow without any loud engine noise.Waterproof and rust-proof,Durable.Save energy and fuel,And accelerate vigorously.
