used on Flatheads with aluminum heads

4 inch height

a thicker style was also used on the brake plate side and on each end of the axle

Cycle Standard universal exhaust tubing is 1

1/4 inch NPT Petcock - Brass Inside Diameter_.438" used on Flatheads with aluminumThis unique brass petcock fits directly to a 1 4" NPT bung on your gas tank, keeping your gas tank looking very clean. It features a 5 16" diameter hose barb on one end and a fuel filter on the other. Rotating the cylindrical piece with the two grooves is how the fuel is toggled on and off. The fuel line will not and does not rotate while toggling the fuel on off. No reserve. Be sure to check out the full line of Prism Supply petcocks for other sizes