Differential Repair Kits | Ford

Differential Repair Kits Ford Axles

Sierra Gear Differential Repair & Installation Kits for Ford 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

Axle Bearing and Seal Kits can be found here

 Ford 7.5″  Master Kit  Bearing Kit  Pinion Kit  Mini Kit
 7.5″  IK F7.5  BK F7.5  PK F7.5  MK F7.5
 Ford 8″  Master Kit  Bearing Kit  Pinion Kit  Mini Kit
 8″  IK F8  BK F8  PK F8  MK F8
 8″ w/aftermarket Posi  IK F8P  BK F8P  PK F8  MK F8
 8″ IRS  BK F8IRS
 Ford 8.8″  Master Kit  Bearing Kit  Pinion Kit  Mini Kit
 8.8″  IK F8.8  BK F8.8  PK F8.8  MK F8.8
 Ford 9″  Master Kit  Bearing Kit  Pinion Kit  Mini Kit
 9″ ’70 & Up LM102910  IK F9  BK F9  PK F9  MK F9
 9″ ’69 & Down 28 Spline LM501310  IK F9B  BK F9B  PK F9  MK F9
 9″ ’69 & Down 31 Spline LM603011  IK F9C  BK F9C  PK F9  MK F9
 9″ 31 Spline Big Pinion  IK F9BRC  BK F9BRC
 9″ 35 Spline Big Pinion  IK F9BRD  BK F9BRD
 9″ Daytona LM102910  IK F9HDA  BK F9HDA  PK F9HD  MK F9
 9″ Daytona LM501310  IK F9HDB  BK F9HDB  PK F9HD  MK F9
 9″ Daytona LM603011  IK F9HDC  BK F9HDC  PK F9HD  MK F9
 9″ Daytona LM104911  IK F9HDD  BK F9HDD  PK F9HD  MK F9
 9″ 31 Spline – Small>Big Pinion LM102910  IK F9RA  BK F9RA
 9″ 31 Spline – Small>Big Pinion LM603011  IK F9RC  BK F9RC
 9″ 35 Spline – Small>Big Pinion LM104911  IK F9RD  BK F9RD
 Ford 9.75″  Master Kit  Bearing Kit  Pinion Kit  Mini Kit
 9.75″  IK F9.75  BK F9.75  PK F9.75  MK F9.75
 9.75″ ’99-’06  IK F9.75B  BK F9.75B  PK F9.75B  MK F9.75B
 9.75″ ’07-’09  BK F9.75C
 9.75″ ’10 & Up w/OEM R&P  BK F9.75D  MK F9.75D
 9.75″ ’10 & Up w/Aftermarket R&P  BK F9.75E  MK F9.75E
 Ford 10.25″ & 10.5″  Master Kit  Bearing Kit  Pinion Kit  Mini Kit
 10.25″  IK F10.25  BK F10.25  PK F10.25  MK F10.25
 10.5″ ’99-’06  IK F10.5  BK F10.5  PK F10.5  MK F10.5
 10.5″ ’07-’10  IK F10.5B  BK F10.5B  PK F10.5B  MK F10.5B
 10.5″ ’11 & Up w/ OEM R&P  IK F10.5C  BK F10.5C  PK F10.5C  MK F10.5C

Find the authorized dealer or installer nearest you, or call Sierra Gear & Axle:

Sierra Gear & Axle Tech Support

Differential Repair Kit Ring Pinion DealersFind the install kit you need? Locate a Sierra Gear & Axle Distributor near you, or call (800) 792-2714

Differential Repair Kit ContentsSierra 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 differential 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