4R100 Cat 4 Rebuild Kit with Billet Triple Disc Torque Converter

Rebuild Kit Features:

• 3-YEAR, UNLIMITED MILEAGE WARRANTY
• Billet Stator Of Your Choice
• Billet Lockup Apply Piston
• CNC-Machined Billet Steel Cover
• Balloon Plate
• 4140 Turbine Splines
• 4140 Hardened Hub
• 3 Carbon-Graphitic Clutch Discs
• Furnaced-Brazed Fins
• Torrington Thrust Bearing Stator Design
• Pressurized Hot Soak Leak Testing
• Computer-Balanced to Within .01 Gram
• Precision-Assembled by Caring American Workers

Enhance Your Rig's Power and Performance

The 4R100 transmission replaced the E40D transmission for the 1999 year model and was mated to the 7.3L Power Stroke diesel through the 2003 model year Ford trucks. The 4R100 proved to be a fairly reliable transmission in stock performance levels, however once power adders are introduced the transmission, becomes the weak link in the drivetrain. This electronically controlled overdriven unit boast a first gear ratio of 2.71:1 and a second of 1.54:1, which makes it great for towing and hauling with an .71, overdrive fuel economy is also improved. This new 4R100 rebuild kit includes Alto Red Eagle clutches along with Kolene steels. Red Eagle Friction is the go-to material for most performance applications. The lining has a unique dual-saturation, which imparts high friction coefficients and high heat resistance. Red Eagle clutches are designed to limit the amount of "slip" by providing a shorter lock-up time, generating less heat.

Made With High-Quality Components

This rebuild kit also includes our much larger, one-piece, billet 27-spline input shaft. This shaft is made from 300 maraging steel and is then heat treated and stress relieved to handle the additional demands of higher torque and stress loads. This shaft is precision ground to exact tolerances. We're also including our exclusive 27-spline stator support with this kit to accommodate the larger input shaft. This Category 5 48RE master rebuild kit also includes a band upgrade. While some of our other kits include a Raybestos Pro Series carbon fiber flex band, in this kit we use our billet rigid band. This band is CNC machined from billet steel and then lined with carbon graphite lining to ensure unmatched performance by any other manufacturer.

Kit Includes:

• Alto High Performance Clutch Kit
• Alto High Performance Steel Module
• Overhaul Kit
• New Filter
• New Bushing Kit
• Transgo Tugger Kit
• New Solenoid Pack
• New High Performance Intermediate Band
• Billet 300 Maraging Input Shaft
• Billet Forward Clutch Drum
• Billet Intermediate Shaft
• SunCoast Triple-Disc Billet Torque Converter w/Billet Stator
• Pressure regulator boost valve
• 1-2 shift valve spring
• Line regulator valve
• Innovative line-to-lube components
• High temp direct clutch seal
• Coast clutch HD snap ring
• OD housing spiral lock snap ring
• Updated direct clutch outer seal
• Calibration plate for firmness adjustments
• Quick-fill valve
• L/R mod boost valve

Vehicle Fitment: 1998-2003 Ford F250, F350, F450 Super Duty

📄 Download Core Return Form (PDF)