Category 1 4R100 Rebuild Kit with Billet Triple Disc Converter

• Complete rebuild kit for the 4R100 Transmission
• Billet Triple Disc Converter provides maximum torque transfer and longevity
• Includes high-friction, heat-resistant performance clutches
• Reinforced steel plates for increased durability
• 3-Year, Unlimited-Mileage Warranty

Upgrade Your 4R100 for Maximum Strength & Performance

The SunCoast Category 1 Rebuild Kit is the ultimate solution for strengthening and extending the life of your 1998-2003 Ford 7.3L Powerstroke's 4R100 transmission. Whether you're towing heavy loads, hauling equipment, or demanding more from your truck, this kit reinforces every weak point in the stock transmission, ensuring smooth, powerful shifts and long-lasting durability. By combining high-performance clutch components, a fully upgraded solenoid pack, and the game-changing SunCoast Category 1 Billet Triple Disc Converter, this rebuild kit transforms your 4R100 into a powerhouse capable of handling the toughest conditions. Say goodbye to slipping, weak shifts, and premature failures”this kit is built to deliver consistent, reliable performance under extreme stress.

Precision Engineering & Unmatched Durability

Designed for seamless installation and ultimate reliability, the SunCoast Category 1 4R100 Rebuild Kit is meticulously engineered to correct common failure points while boosting overall performance. It includes Alto Red Eagle clutches, known for their high friction coefficients and heat resistance, ensuring improved shift quality and reduced clutch slippage. The Alto High Performance Steel Module enhances durability, while the carbon-fiber intermediate band withstands extreme heat for superior downshift engine braking. To reinforce shift control, the TransGo Tugger Kit eliminates common transmission pressure issues and allows you to customize shift firmness to your preference. The included New Solenoid Pack ensures precise, crisp shifts and prevents premature clutch wear due to fluid contamination. For maximum stability, this kit also comes with a complete overhaul kit, new bushings, and The Guardian”SunCoast's trusted transmission protection package.

The Billet Triple Disc Converter: Next-Level Power Transfer

At the heart of this rebuild kit is the SunCoast Category 1 Billet Triple Disc Torque Converter, a major upgrade over the factory unit. Featuring a CNC-machined billet steel cover, furnace-brazed fins, and 3 carbon-graphitic clutch discs, this torque converter delivers superior lock-up engagement, reduces slippage, and increases torque transfer efficiency. Unlike stock converters that can fail under heavy loads, the 4140 hardened hub and 4140 turbine splines provide unmatched strength and longevity, making it ideal for heavy towing and high-performance applications. Engineered for smooth, consistent operation, this converter ensures your Powerstroke stays in the optimal power range, reducing transmission heat and improving fuel efficiency. Backed by a 3-year, unlimited-mileage warranty, this is the torque converter your 7.3L Powerstroke deserves.

• 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
• SunCoast Category 1 Torque Converter

• $450 Core Charge applies.