Differential Repair & Installation Kits | GM

Differential Repair & Installation Kits for GM and Chevrolet Axles

Differential Repair & Installation Kits for GM and Chevy Axles

Differential Repair and Installation Kits from Sierra Gear and Axle are the most complete in the industry. We assemble each kit using only the highest quality components. Each of our kits are designed to ensure a trouble-free installation and long lasting performance. Several different kits are available for each application, each tailored for the type of differential repair being performed. Whether you’re doing a complete differential repair, differential gear ratio change, budget rebuild or pinion bearing replacement, we have got the ideal kit for you.

Differential Kit contents and a description of each kit type is located at the bottom of this page, below the application chart

Find the install kit you need? Locate a Sierra Gear & Axle Distributor near you, or call (800) 792-2714

Axle Bearing and Seal Kits can be found here

GM Application: Master Kit Bearing Kit Pinion Kit Mini Kit
’55 Truck / Passenger IK GM55 BK GM55 PK GM55 MK GM55
’63-’79 Corvette IK VET BK VET PK VET MK VET
’97-’05 C5 Vette Getrag BK VETGR
7.25″ IFS IK GM7.25 BK GM7.25 PK GM7.25 MK GM7.25
7.5″ ’81 & Down IK GM7.5 BK GM7.5 PK GM7.5 MK GM7.5
7.5″ ’82 & Up IK GM7.5B BK GM7.5B PK GM7.5B MK GM7.5B
7.6″ ’00 & Up Rear, H3 Front IK GM7.6 BK GM7.6 PK GM7.6 MK GM7.6
7.6″ Camaro V6 IK GM7.6 BK GM7.6 PK GM7.6 MK GM7.6
7.75″ Borg Warner IK GM7.75 BK GM7.75 PK GM7.75
8″ IK GM8 BK GM8 PK GM8 MK GM8
8″ GTO IK GTO BK GTO PK GTO MK GTO
8.2″ IK GM8.2 BK GM8.2 PK GM8.2 MK GM8.2
8.2″ BOP IK BP8.2 BK BP8.2 PK BP8.2 MK BP8.2
8.25″ IFS IK GM8.25 BK GM8.25 PK GM8.25 MK GM8.25
8.5″ Rear ’95 & Down IK GM8.5 BK GM8.5 PK GM8.5 MK GM8.5
8.5″ Front ’88 & Down IK GM8.5F BK GM8.5F PK GM8.5F MK GM8.5F
8.5″ TrueTrac, Detroit, AG Pro ’95 & Down IK GM8.5E BK GM8.5E PK GM8.5E MK GM8.5E
8.6″ LM501349 ’98-’99 IK GM8.6 BK GM8.6 PK GM8.6 MK GM8.6
8.6″ ’96-’99 Eaton, AG Pro, Detroit, TT IK GM8.6E BK GM8.6E PK GM8.6 MK GM8.6
8.6″ ’99-’08 LM603049 IK GM8.6B BK GM8.6B PK GM8.6B MK GM8.6B
8.6″ ’09 & Up IK GM8.6C BK GM8.6C PK GM8.6C MK GM8.6C
8.6″ Camaro V8 IK GM8.6CAM BK GM8.6CAM PK GM8.6CAM MK GM8.6CAM
8.75″ 12B R/G 10B Cover IK GM8.75 BK GM8.75
8.875″ 10B IK GM8.875 BK GM8.875
12 Bolt Passenger IK GM12P BK GM12P PK GM12P MK GM12P
12 Bolt Truck IK GM12T BK GM12T PK GM12T MK GM12T
9.25″ IFS IK GM9.25 BK GM9.25 MK GM9.25
9.5″ ’95 & Down IK GM9.5 BK GM9.5 PK GM9.5 MK GM9.5
9.5″ ’96 & Up IK GM9.5B BK GM9.5B PK GM9.5B MK GM9.5B
10.5″ ’88 & Down IK GM10.5 BK GM10.5 PK GM10.5 MK GM10.5
10.5″ ’88-’95 IK GM10.5B BK GM10.5B PK GM10.5B MK GM10.5B
10.5″ ’96 & Up IK GM10.5C BK GM10.5C PK GM10.5C MK GM10.5C
11.5″ IK GM11.5 BK A11.5 PK A11.5 MK A11.5
HO72 w/o Load Bolt IK GMHO72 BK GMHO72 PK GMHO72
HO72 w/ Load Bolt IK GMHO72B BK GMHO72B PK GMHO72B

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Guide to Differential Repair, Rebuild and Installation Kit Contents:

Sierra Gear differential rebuild kits are typically assembled with OEM Components, including Timken or Koyo Bearings and National or Spicer Seals

Master Rebuild Kit (IK) – Our most complete Differential Rebuild Kit.

  • Pinion and Carrier Bearings
  • Pinion Seal
  • Pinion Shims (where applicable)
  • Pinion Nut
  • Crush Sleeve or Depth Shims (where applicable)
  • Ring Gear Bolts (most applications)
  • O-Ring (where applicable)
  • Gear Marking Compound & Brush
  • Loctite
  • Cover Gasket or Silicone
  • Carrier Super Shims (where applicable)
  • Slingers & Baffle (where applicable)
  • Installation Instructions

Bearing Rebuild Kit (BK) – Rebuild kit for installers that already have shims and small parts.

  • Pinion and Carrier Bearings
  • Pinion Seal
  • O-Ring (where applicable)
  • Pinion Nut
  • Crush Sleeve or Depth Shims (where applicable)

Pinion Rebuild Kit (PK) – Ideal for low mileage ring & pinion gear ratio changes with no carrier change.

  • Pinion Bearings
  • Pinion Seal
  • Pinion Shims (where applicable)
  • Crush Sleeve or Depth Shims (where applicable)
  • O-Ring (where applicable)
  • Gear Marking Compound & Brush

Mini Rebuild Kit (MK) – For low mileage vehicles doing ring & pinion gear ratio changes.

  • Pinion Seal
  • Pinion Shims (where applicable)
  • Crush Sleeve or Depth Shims (where applicable)
  • Ring Gear Bolts (most applications)
  • O-Ring (where applicable)
  • Gear Marking Compound & Brush
  • Loctite
  • Carrier Super Shims (where applicable)
  • Installation Instructions