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Jeep SJ Full Size Model 20 Rear Axles

Make Sure It Fits Your Vehicle

Your rig has proven reliable for your off-road adventures over the trails and the rocks and through the streams. The Jeep is bound to take some knocks and dings along the way, and if the Model 20 rear axle is too bent, then you need to find the replacement parts before the damage keeps you from riding. 1980-91 SJs use the Model 20 axle and 4wheelparts.com has the parts you need to make repairs. Any change you make to the rear axle should be done with strengthening the rear end in mind. Your classic Jeep is made for the long haul and meant to withstand the harshest, most severe conditions.

Model 20 Replacement Parts
From nuts and gaskets to seals and bearings, 4wheelparts.com carries a variety of Jeep axle replacement parts so you can restore your rig back to its riding and handling glory. If your goal is to rebuild and set up, a ring and pinion installation kit has the pinion nut and seal, along with the bolts, shims, compounds and sealer needed to do the job. While you may be tempted to completely replace the axle, know that the Model 20 has a larger gear than more modern axles and holds up to tall tires, has strength and durability, handles heavy loads and takes on- and off-road abuse well.

Quality Parts at Great Prices
When you need Jeep rear axle parts, visit 4wheelparts.com and browse through their wide selection of parts. With their excellent reputation, status, and size in the industry, 4 Wheel Parts gets deals that they pass on to customers. We want you to come to us for your off-road parts and buy from us with confidence. We stand by our price match guarantee, so if you see a lower advertised price from our competitors, let us know and we'll match it. Get fast, free shipping on orders over $75.

38 Product Groups

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Omix-ADA Wheel Studs

From $1.79

Wheel Stud
California Residents: WARNING

From $1.79

Omix-ADA Axle Bearings

From $28.79

Axle Bearing
California Residents: WARNING

From $28.79

Omix-ADA Axle Oil Seals

5.0 5.0 (1)

From $10.79

Axle Oil Seal
California Residents: WARNING

From $10.79

Crown Automotive Wheel Bearings

From $14.44

Wheel Bearing
California Residents: WARNING

From $14.44

Omix-ADA Axle Bearing Kits

From $100.79

Axle Bearing Kit
California Residents: WARNING

From $100.79

Crown Automotive Axle Kits

5.0 5.0 (1)

From $105.99

Direct-fit Jeep axles
Available for numerous axle types, such as CV-style, C-clip, front inner and outer, and bolt-in
Available for many Jeep models
California Residents: WARNING

From $105.99

Crown Automotive Ring And Pinion Sets

From $269.99

Crown Automotive Ring And Pinion Set
California Residents: WARNING

From $269.99

Omix-ADA Ring And Pinions

From $1,015.19

Ring And Pinion
California Residents: WARNING

From $1,015.19

Crown Automotive Ring Gear Bolt Kits

From $1.99

Crown Automotive Ring Gear Bolt Kit
California Residents: WARNING

From $1.99

Crown Automotive Pinion Yokes

5.0 5.0 (2)

From $102.99

Crown Automotive Pinion Yoke
California Residents: WARNING

From $102.99

Omix-ADA Pinion Oil Seals

From $12.59

Pinion Oil Seal
California Residents: WARNING

From $12.59

Crown Automotive Pinion Shim Kit

From $14.99

Crown Automotive Pinion Shim Kit
California Residents: WARNING

From $14.99

Crown Automotive Pinion Bearing Shim Kit

From $72.99

Crown Automotive Pinion Bearing Shim Kit
California Residents: WARNING

From $72.99

Omix-ADA Pinion Bearings

From $21.59

Omix-Ada Pinion Outer Bearing
California Residents: WARNING

From $21.59

Jeep Outer Pinion Bearing

From $93.99

Includes bearing and cup
California Residents: WARNING

From $93.99

Omix-ADA Pinion Bearing And Cup Kits

From $22.49

Omix-ADA Differential Pinion Bearing Kits

From $43.19

Differential Pinion Bearing Kit
California Residents: WARNING

From $43.19

Crown Automotive Pinion Washer

From $1.99

Pinion Nut Washer
California Residents: WARNING

From $1.99

Omix-ADA Spider Gear Kits

From $108.89

Spider Gear Kit
California Residents: WARNING

From $108.89

Crown Automotive Differential Gear Kits

5.0 5.0 (1)

From $106.99

Dana 20, 30, 35, 44, and 60 gear kits
Crown Automotive has been the leading manufacturer and distributor of replacement parts for Jeep vehicles
California Residents: WARNING

From $106.99

Omix-ADA Differential Cross Shafts

From $15.29

Differential Cross Shaft
California Residents: WARNING

From $15.29

Crown Automotive Differential Master Overhaul Kit

From $109.99

Differential Master Overhaul Kit
Bearings, seal, shims and hardware
California Residents: WARNING

From $109.99

Omix-ADA Differential Rebuild Kits

From $138.59

The Differential Rebuild Kits from Omix Ada will provide you with the components to rebuild your Jeeps differential
The rebuild kits offer high quality parts that meet or exceed the factory requirements
Each kit includes replacement pinion nut , crush sleeve, pinion seal, pinion bearings, carrier bearings, ring gear bolts, silicone sealer, locktite, master shim kit and gear marking compound to complete the job.
California Residents: WARNING

From $138.59