Guaranteed Fit

Nearly 30 years of obsessively cataloging, photographing, and taking video of each part means it will fit your 1990 Peterbilt All Peterbilt Trucks With Sanden 4424 4731 or 4039 A/C Compressor.

Period. No Hassle. GUARANTEED.

We cover round trip shipping if we make a mistake.

Check out the video below to view the Guaranteed Exact Fit process from start to finish!