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The Specialty Shop's Solid Differential Mount Installation

Click any picture to see an enlarged view.

WARNING: It is highly recommended you not install this part unless you have solid crossmember mounts. The Specialty Shop also sells solid crossmember bushings.

Note: These instructions and photos were written using a prototype. The actual look of the mount may differ slightly, but the install instructions should not change.

Tools requires

  • 3/8" socket wrench
  • 3/8" 6" extension
  • 3/8" regular 10 mm socket
  • 3/8" regular 14 mm socket
  • 3/8" deep well 14 mm socket
  • 1/2" socket wrench
  • 1/2" 3" extension
  • 1/2" 9" extension
  • 1/2" regular 12 mm socket
  • 1/2" regular 14 mm socket
  • 1/2" regular 17 mm socket
  • regular 17 mm wrench
  • 1/2" torque wrench
  • car ramps or jack stands
  • floor jack
  • creeper (unless you like trying to slide around on your back on concrete)

Parts Needed

Time Required

  • approximately 2 hours


  1. Put the rear of the car up on ramps or jack stands. (ramps are recommended)
  2. Remove the differential heat shield by removing the two 10mm nuts.
  3. Remove all the nuts and bolts holding the differential mount to the body and the diff. Don't lose the wire.
  4. Support the rear of the differential with the floor jack.
  5. Remove the four bolts holding the differential to the crossmember. Use the flat 17mm wrench to get the top nuts.
  6. Lower the rear of the differential until the mount falls out. Keep in mind the driveshaft and half shafts are still connected.
  7. Install the new solid diff mount and raise the rear of the differential. Put the nuts and bolts on, but do not tighten.
  8. Reinstall the bolts holding the differential to the crossmember, and only hand tighten them.
  9. Get all the nuts and bolts on the differential mount hand tight.
  10. Remove the jack.
  11. Torque the diff mount to body nuts and bolts.
  12. Torque the diff mount to diff nuts.
  13. Torque the diff to crossmember nuts and bolts.
  14. Reinstall the heat shield.