Nearly 30 years of obsessively cataloging, photographing, and taking video of each part means it will fit your 1971 Pontiac LeMans Spartan Locker - GM 8.5" With 30 Spline Axles - Includes Heavy-Duty Cross Pin Shaft - Rear Differential Differential Traction Devices.

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!