This is Sullivan's 12oz Slant Oval Type Fuel Tank.
Molded from rigid high density polyethylene. This tank kit includes the hardware needed for glow fuel operation, including twist-tie clamps and both brass and nylon tubing. With the Gasoline Conversion Kit (SULQ2684) this fuel tank may be used with gasoline or diesel fuel.
Size : 12oz (360ml)
Height : 3-1/4 in. (83mm)
Width : 1-1/2 in. (38mm)
Length : 6-1/2 in. (165mm)