Nearly 30 years of obsessively cataloging, photographing, and taking video of each part means it will fit your 1977 GMC Pick-up Truck K15/ K1500 1/2 Ton [4WD] - 8.5 .

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!