The Sand System Air Box can be used on any air cleaner base by measuring 4 1/4" x 7". Mounting holes can be drilled in most aluminum or steel air cleaner bases and can be used to mount single A/C on Baja Bugs and Dune Buggies. Fits all IDF, FRD & DRLA Single and Dual Throat Carburetors with CB Throttle Linkage.

Opening Diameter:
2 1/2" Outer Diameter
2 1/8" Inner Diameter