Large Thru Frame Fitting
From Pure Choice Motorsports
PURE Choice Motorsports introduces the largest inside diameter Thru Frame fittings that are currently made in the USA. These fittings are designed to fit a boxed frame from 1 1/2" to 3" wide and have 3/8" npt female threads on each end, you can shorten the thru frame fitting and retap the female pipe thread if needed. This fitting has a 1/2" hole thru the middle and can be used for water, oil, transmission, Air conditioning etc.