Guaranteed Fit

Nearly 30 years of obsessively cataloging, photographing, and taking video of each part means it will fit your 1992 Pontiac Grand Prix Hypertech ThermoMaster - STE - 3.1L Engine - Auto Trans Engine Tuner.

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!