Jeep Wrangler SJ Full Size Model 20 Rear Axle - Replacement Parts | 4WP

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
  • 7
     Omix-ADA Wheel Studs

    Omix-ADA Wheel Studs

    Omix-Ada Wheel Stud

    From $1.79

    On Sale
    8
     Omix-ADA Axle Bearings

    Omix-ADA Axle Bearings

    Omix-Ada Axle Bearings

    From $28.79

    On Sale
    9
     Omix-ADA Axle Oil Seals

    Omix-ADA Axle Oil Seals

    Omix-Ada Axle Oil Seal
    5.0 5.0 (1)

    From $10.79

    On Sale
    10
     Crown Automotive Wheel Bearings

    Crown Automotive Wheel Bearings

    Crown Automotive Wheel Bearing

    From $14.44

    On Sale
    10
     Omix-ADA Axle Bearing Kits

    Omix-ADA Axle Bearing Kits

    Omix-Ada Axle Bearings

    From $100.79

    On Sale
    11
     Crown Automotive Axle Kits

    Crown Automotive Axle Kits

    Crown Automotive Axle Kits
    5.0 5.0 (1)

    From $105.99

    13
     Crown Automotive Ring And Pinion Sets

    Crown Automotive Ring And Pinion Sets

    Crown Automotive Ring And Pinion Set

    From $269.99

    13
     Omix-ADA Ring And Pinions

    Omix-ADA Ring And Pinions

    Omix-Ada Ring And Pinion

    From $1,015.19

    On Sale
    13
     Crown Automotive Ring Gear Bolt Kits

    Crown Automotive Ring Gear Bolt Kits

    Crown Automotive Ring Gear Bolt Kit

    From $1.99

    14
     Crown Automotive Pinion Yokes

    Crown Automotive Pinion Yokes

    Crown Automotive Pinion Yoke
    5.0 5.0 (2)

    From $102.99

    15
     Omix-ADA Pinion Oil Seals

    Omix-ADA Pinion Oil Seals

    Omix-Ada Pinion Oil Seal

    From $12.59

    On Sale
    16
     Crown Automotive Pinion Shim Kit

    Crown Automotive Pinion Shim Kit

    Crown Automotive Pinion Shim Kit

    From $14.99

    16
     Crown Automotive Pinion Bearing Shim Kit

    Crown Automotive Pinion Bearing Shim Kit

    Crown Automotive Pinion Bearing Shim Kit

    From $72.99

    17
     Omix-ADA Pinion Bearings

    Omix-ADA Pinion Bearings

    Omix-Ada Pinion Outer Bearing

    From $21.59

    On Sale
    17
     Jeep Outer Pinion Bearing

    Jeep Outer Pinion Bearing

    Jeep Outer Pinion Bearing

    From $93.99

    18
     Omix-ADA Pinion Bearing And Cup Kits

    Omix-ADA Pinion Bearing And Cup Kits

    Omix-Ada Pinion Inner Bearing Kit

    From $22.49

    On Sale
    18
     Omix-ADA Differential Pinion Bearing Kits

    Omix-ADA Differential Pinion Bearing Kits

    Omix-Ada Differential Pinion Bearing Kit

    From $43.19

    On Sale
    19
     Crown Automotive Pinion Washer

    Crown Automotive Pinion Washer

    Crown Automotive Pinion Washer

    From $1.99

    20
     Omix-ADA Spider Gear Kits

    Omix-ADA Spider Gear Kits

    Omix-Ada Spider Gear Kit

    From $108.89

    On Sale
    20
     Crown Automotive Differential Gear Kits

    Crown Automotive Differential Gear Kits

    Crown Automotive Differential Gear Kits
    5.0 5.0 (1)

    From $106.99

    20
     Omix-ADA Differential Cross Shafts

    Omix-ADA Differential Cross Shafts

    Omix-Ada Differential Cross Shaft

    From $15.29

    On Sale
    22
     Crown Automotive Differential Master Overhaul Kit

    Crown Automotive Differential Master Overhaul Kit

    Crown Automotive Differential Master Overhaul Kit

    From $109.99

    22
     Omix-ADA Differential Rebuild Kits

    Omix-ADA Differential Rebuild Kits

    Omix-Ada Differential Rebuild Kits

    From $138.59

    On Sale
    24
     Omix-ADA Differential Cover Gaskets

    Omix-ADA Differential Cover Gaskets

    Omix-Ada Differential Cover Gasket

    From $2.69

    On Sale
    25
     Crown Automotive Pinion Crush Sleeve

    Crown Automotive Pinion Crush Sleeve

    Crown Automotive Pinion Crush Sleeve

    From $3.99

    On Sale
    25
     Omix-ADA Collapsible Pinion Spacers

    Omix-ADA Collapsible Pinion Spacers

    Omix-Ada Collapsible Pinion Spacer

    From $2.69

    On Sale
    15a
     Crown Automotive Transfer Case/Pinion Lock Nut

    Crown Automotive Transfer Case/Pinion Lock Nut

    Crown Automotive Pinion Lock Nut

    From $4.99

    15A
     Dana Spicer Transfer Case/Pinion Nuts

    Dana Spicer Transfer Case/Pinion Nuts

    Crown Automotive Pinion Nut

    From $0.59

    Jeep Axle Shaft Seal Retainer

    Jeep Axle Shaft Seal Retainer

    From $33.99

    Crown Automotive Differential Cross Shaft Pins

    Crown Automotive Differential Cross Shaft Bolt

    From $0.99

    Omix-ADA Differential Carriers

    Omix-Ada Differential Carrier

    From $1,208.69

    On Sale

    Dana Spicer Inner Pinion Bearing Kit

    Dana Spicer Inner Pinion Bearing Kit

    From $12.63

    On Sale

    Crown Automotive Differential Cover Plug

    Crown Automotive Differential Cover Plug

    From $1.99

    Crown Automotive Differential Case Assemblies

    Crown Automotive Differential Case Kit

    From $1,504.99

    Crown Automotive Differential Cross Shaft

    Crown Automotive Differential Cross Shaft

    From $15.99

    Crown Automotive Differential Cover Bolts

    Crown Automotive Differential Cover Bolt

    From $14.99

    Dana Spicer Outer Pinion Bearing Kits

    Dana Spicer Outer Pinion Bearing Kit

    From $22.65

    Dana Spicer Axle Bearing Retaining Rings

    Dana Spicer Axle Bearing Retaining Ring
    5.0 5.0 (1)

    From $7.85