We offer a complete line of rear end replacement parts for the AMC 20 differential. You can purchase high quality ring and pinion sets in various ratios, high quality bearing rear end bearing overhaul kits including pinion bearings, pinion seal, crush sleeve, pinion nut, shims, ring gear bolts, marking compound and gasket. The AMC differential was utilized by American Motors in their passenger car line starting in 1968 and is also used in the Jeep J10 truck series starting in 1980 to 1986. Used also in the Jeep Wagoneer 1979-1986 and some Ambassador, AMX, Concord, Gremlin, Hornet, Javelin, J10, Matador, Pacer, Scrambler, Spirit. Our inventory includes ring gear and pinion sets, including aftermarket and OE gear sets. We are able to supply axles, bearing overhaul kits, carriers, cases, spider and side gears. Positraction units we offer include Lockrights by Powertrax, Auburn, Detroit Lockers, Trac Loc and ARB air lockers. We are a Dana Spicer volume distributor and offer a complete line or ring gear and pinions and differential repair parts from the small 7.5 inch differential to the large Dana 80.

Along with our quality parts you have access to applications information for available ring and pinion ratios, information to assist you in identification of the differential that you have. Free information on ring and pinion installation is provided alone with specifications and carrier/case breaks when you are considering gear ratio changes. You can review applications available to assist you with selection of the specific positraction unit that you may need to improve your performance.

Applications Model Year   Model Year Ambassador 68-74   J10 80-86 AMX 68-79   Matador 72-78 Concord 78-79   Pacer V8 78-79 Germlin V8 70-76   Scrambler 76-78 Hornet V8 73-77   Spirit V8 79 Javelin V8 70-74   Wagoneer 79-86 Ring & Pinion Sets Part # Teeth Ratio AM20-273 30-11 2.73 AM20-308 43-14 3.08 AM20-331 43-13 3.31 AM20-354 39-11 3.54 AM20-373 41-11 3.73 AM20-410 41-10 4.10 AM20-456 41-9 4.56

SPECIFICATIONS:     10-1/32" X 10-25/64" 12 HOLES ROUND Gasket Pattern RG DIAMETER 8.875" 8 7/16" X 20 RH THREADED BOLTS PINION DIAMETER 1.625" 28 SPLINE CASE: 2.73 & NUMERICALLY LOWER AND 3.08 & NUMERICALLY HIGHER 8620 Material Heat-Treated Specifications: Cover Bolt Ft. Lbs. 15 Pinion Brg. Preload In. Lbs 15-25 Ring Gear Backlash .005-.009 Ring Gear Bolt to case Ft. Lbs. 105 Side Brg. Caps Ft. Lbs. 87 Instructions for setting up ring and pinion backlash.

AMC20 Ring & Pinion Price List Part # OEM# R&P Jobber Price AM20-273 8132699 $290.00 * AM20-308 8130388 $281.00 * AM20-331 8132700 $212.62 AM20-354 4486825 $212.62 AM20-373 8133179 $212.62 AM20-410 8127072 $212.62 AM20-456 8124410 $212.62 AM20-488   $212.62 DTSR20RMK Bearing overhaul kit   $ 98.81 * Made in USA     Bearing Kits, these high quality Kit's include pinion bearings, carrier bearings pinion bearing seal, gasket, pinion and carrier shims, pinion nut, marking compound, crush sleeve and ring gear bolts

Your gears run cooler and last longer! Order above high performance synthetic oil and friction additive combo kit at time of order for ring and pinion or bearing overhaul kit and pay only $36.76. Quality guaranteed performance

Most major credit cards accepted, all products have a money back guarantee.

22% Overdrive Save 20% in fuel economy!

Diesel Programmers add power & improve economy!

Traction performance problem solved by our positraction kits