Part 87S-71BMPR-391 Part Number: 87S-71BMPR-391


Moser 8 3/4 Muscle Pak rear end assembly for 1971-1974 B-body Mopar models with 3.91 gear ratio.

Includes: New Moser stamped 8 3/4" housing with OEM located mounting provisions, 30 spline bolt-in axles, 5 x 4 1/2" bolt pattern, axle bearings, stock wheel studs, retainer plates, nodular iron 489 case, Auburn posi unit, ring and pinion, 1350 series cast pinion yoke, flat pinion snubber, differential is set up with Timken bearings, 11" drum brakes and emergency brake cables. Completely Assembled



Available in the following catalog:(Click on a link below to navigate to the part)





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