1999-2004 Mustang 8.8 31 Spline Conversion with 3.73 Gears
So, you want to beef up your Mustang's 8.8" rear? How about a kit that gives you EVERYTHING you need to make it bullet-proof? We include everything you need to make your rear axle ready for severe service, be it on the drag strip or the road course!
- FRPP Carbon Clutch Disc 31 spline differential M-4204-F318C
- Hardened 31 spline 5 lug axles MOS-9903-31
- High Strength Steel 3" studs MOR-46180
- Ford Racing (FRPP) 3.73 gears M-4209-88373
- FRPP M-4210-B2 bearing kit
- Axle bearing & seal kit AK-1563
- Carrier bearing cap stud kit M-4034-A
- Heavy duty differential support/cover M-4033-G2
- Pinion flange LRS-4851A
- 75W140 Royal Purple synthetic gear oil
- Axles do not include ABS rings. Reuse factory ABS ring or replace with LRS-2189A.
- Does not fit IRS equipped Mustangs.
Due to Hazmat regulations, lubricants/fluids cannot be shipped to APO/FPO addresses.
Ford Performance Racing Parts - NO WARRANTY - Click Here
After installation of rear gears, you will need to correct the speedometer. There are different methods to do this depending on year model.
1979-1995 Speedometer Correction - Click Here
1996-2017 Speedometer Correction - Click Here