ATS Diesel Stage 3 Transmission Package

2003–2004 Dodge Ram 2500 / Ram 3500 4WD 48RE Transmission

3099342272

Overview:

The ATS Diesel Stage 3 Transmission Package is a comprehensive upgrade designed specifically for 2003 to 2004 Dodge Ram 2500 and Ram 3500 4WD trucks equipped with the 48RE transmission. Engineered to handle increased power and torque demands, this package is ideal for diesel enthusiasts seeking enhanced durability and performance in demanding driving conditions. Whether you tow heavy loads or push your truck to its limits, the Stage 3 package delivers reliable, long-lasting transmission strength.

Built by ATS Diesel, a trusted name in diesel performance, this transmission package addresses common weak points in the factory 48RE transmission, providing improved shift quality, increased torque capacity, and greater overall transmission longevity. It’s a perfect solution for owners upgrading their trucks with performance modifications or those who require a transmission that can withstand rigorous use.

Key Features:

This Stage 3 Transmission Package incorporates advanced components and engineering enhancements to ensure superior performance and reliability. Key features include:

• Heavy-duty internal components designed to handle increased torque and power
• Upgraded clutch packs for improved holding capacity and smoother shifts
• Reinforced planetary gear sets for enhanced durability under load
• Precision-machined parts for optimal fit and function
• Improved valve body calibration for better shift timing and feel
• High-quality materials selected for long-term wear resistance
• Complete transmission rebuild with ATS Diesel’s proven Stage 3 specifications
• Designed specifically for Dodge Ram 2500 and 3500 4WD models from 2003 to 2004

Construction & Design:

The ATS Diesel Stage 3 Transmission Package is meticulously engineered using premium-grade materials and precision manufacturing techniques. Each component is carefully selected and tested to withstand the rigors of heavy-duty use, including towing, hauling, and off-road driving. The reinforced gear sets and upgraded clutch packs are crafted to resist wear and heat buildup, ensuring consistent performance over time.

ATS Diesel’s attention to detail in machining and assembly guarantees that the transmission operates smoothly and reliably, minimizing the risk of premature failure. The package is designed to integrate seamlessly with the factory drivetrain, maintaining OEM compatibility while delivering enhanced strength and durability.

Installation & Fitment:

This transmission package is a direct fit replacement for the 48RE transmission in 2003 and 2004 Dodge Ram 2500 and Ram 3500 4WD trucks. Installation should be performed by a qualified technician familiar with heavy-duty transmissions. While the package is designed for bolt-in compatibility, professional installation ensures proper calibration and optimal performance.

No major modifications to the vehicle’s drivetrain or electronics are required, making it an efficient upgrade for owners looking to improve transmission reliability and capability without extensive customization.

What's Included:

• Fully rebuilt 48RE transmission with Stage 3 internal upgrades
• Upgraded clutch packs and friction materials
• Reinforced planetary gear sets
• Calibrated valve body for improved shift quality
• Installation hardware and gaskets
• Detailed installation instructions

Ideal For:

This ATS Diesel Stage 3 Transmission Package is ideal for Dodge Ram 2500 and 3500 owners who demand enhanced transmission durability and performance. It is especially suited for:

• Diesel truck enthusiasts upgrading power levels
• Owners who frequently tow heavy trailers or haul substantial payloads
• Drivers seeking improved shift quality and transmission longevity
• Those preparing their trucks for off-road or commercial use
• Anyone looking to replace or upgrade their factory 48RE transmission with a proven, heavy-duty solution

ATS Diesel Performance builds diesel upgrade solutions engineered for higher torque, towing confidence, and competition-level durability. Best known for performance-built transmissions, ATS also offers turbochargers, exhaust and fuel system components, and other supporting parts designed to handle heavy loads and elevated power on modern diesel trucks.