Nearly 30 years of obsessively cataloging, photographing, and taking video of each part means it will fit your 1990 Mack All Models Power Steering - With TAS65004 on plate opposite of input shaft Power Steering Gear Box.

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!