Base Gasket (4 Hole 2.270 Bore Throttle Stop) 4500 gaskets are a great way to ensure a leak free seal. Gaskets are made in-house by APD using the same corrosion resistant, anti-stick MP15 material that we use in our carburetors and fuel systems.

*The 4 Hole 2.270 Bore Throttle Stop Gasket must be used with the APD Elite w/Fuel Throttle Stop.