Autosports Engineering Toyota Supra MK4 Lexus SC300 SC400 8.8 Rear Differential Kit

This is our bolt in conversion for the MK4 Supra and Lexus SC chassis. This allows you to do a direct bolt-in conversion — no cutting or welding necessary.

• Fits Both Steel and Aluminum Cobra/Explorer Differentials
• Direct Bolt In
• Front Support Bracket Included
• Solid Bushings Available
• Billet 6061 Aluminum
• Vent port
• Fill/Drain Ports
• 8.8 Diff Builds Can Be Sub'd Final Drives Based on Best Fit Due to Availability & Ratios

Why there are no load bolts

ASE 8.8 housings are built without load bolts, and that is deliberate. Load bolts are a band-aid for ring gear deflection in a poorly supported case; the correct fix is proper bearing preload and case rigidity. Chromoly main caps are used to hold the carrier bearings in place rather than relying on a bolt pressing on the back of the ring gear.

Final drive ratios

Built 8.8 diff orders may be substituted to the closest available final drive based on stock and ratio availability. If a specific ratio is essential to your build, confirm before ordering rather than after.

Driveshaft

Moving from the Toyota three-bolt rear diff to a Ford 8.8 changes the pinion flange bolt pattern. You do not necessarily need a new driveshaft — ASE's countersunk driveshaft adapter lets you reuse an existing aftermarket shaft by mating it to a 1310 or 1350 U-joint.