Andrews Racing Transmissions Stage IV 48RE is a great choice for modified trucks and race use and is rated to 1000hp. All of the inherent problems that have plagued this transmission are fixed and several upgrades are done to increase longevity and performance of this transmission.
 
Stage IV 48RE Diesel Transmission includes:
 
- Billet cover low stall, triple disc torque converter
- A-R-T modified automatic shift valve body with increased line pressure
- A-R-T modified 2nd gear servo
- A-R-T billet aluminum snap ring access cover with o-ring
- Billet steel input hub & 300m input shaft
- Billet steel forward clutch drum
- Billet aluminum low/reverse servo
- Billet  aluminum dual ring accumulator piston
- Billet aluminum forward apply piston
- Billet steel big piston high gear drum
- 4.2 2nd gear apply lever
- HD band strut
- 300M intermediate shaft
- 300M output shaft
- Welded ring gears
- GPZ clutches
- Red racing bands (rigid 2nd gear band)
- Teflon sealing rings
- Deep cast aluminum logo pan 4 quart
- Premium stud kit with reusable gasket
- High flow filter kit with billet filter extension with o-ring
- New electronics--solenoids & sensors
- New bushings, thrust washers and hard parts where necessary
- Overdrive upgrades
 
Specify year before ordering
48RE refundable core charge is $1500