ATS Diesel Stage 1 Transmission Package

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

3099142272

Overview:

The ATS Diesel Stage 1 Transmission Package is engineered specifically for 2003 to 2004 Dodge Ram 2500 and Ram 3500 models equipped with the 4WD 48RE transmission. Designed to enhance the durability and performance of your truck’s transmission, this package is ideal for diesel enthusiasts seeking improved reliability under demanding conditions. Whether you use your Ram for towing, hauling, or off-road applications, this Stage 1 upgrade provides a robust foundation for long-term transmission health and smoother power delivery.

Built by ATS Diesel, a trusted name in diesel performance parts, this transmission package addresses common weaknesses in the stock 48RE transmission, offering enhanced shift quality and increased resistance to wear. It is a smart investment for owners looking to maintain or improve the drivability and longevity of their Dodge Ram trucks.

Key Features:

This Stage 1 Transmission Package incorporates proven upgrades and components designed to optimize the 48RE transmission’s performance and durability. Key features include:

• Heavy-duty internal components engineered to withstand increased torque and load
• Improved shift feel and consistency for smoother gear changes
• Enhanced clutch packs and friction materials for longer service life
• Precision machining and balancing to reduce vibration and wear
• Designed specifically for 4WD Dodge Ram 2500 and 3500 models from 2003 to 2004
• Direct fitment with no major modifications required
• Manufactured by ATS Diesel, a leader in diesel transmission upgrades

Construction & Design:

The ATS Diesel Stage 1 Transmission Package is crafted using high-quality materials selected for strength and durability. Each component undergoes rigorous quality control and precision engineering to ensure optimal fit and function within the 48RE transmission. The package focuses on reinforcing critical wear points and improving the overall mechanical integrity of the transmission assembly. This results in a transmission that can better handle the stresses of heavy towing, off-road driving, and daily use without compromising reliability.

Installation & Fitment:

This transmission package is designed as a direct replacement for the stock 48RE transmission components in 2003–2004 Dodge Ram 2500 and 3500 4WD trucks. Installation should be performed by a qualified technician familiar with automatic transmission systems. The package fits the following factory models:

• Dodge Ram 2500 Laramie (2003)
• Dodge Ram 2500 SLT (2003–2004)
• Dodge Ram 2500 ST (2003–2004)
• Dodge Ram 3500 Laramie (2003–2004)
• Dodge Ram 3500 SLT (2003–2004)
• Dodge Ram 3500 ST (2003–2004)

No major modifications are required, making it a straightforward upgrade for owners looking to enhance transmission durability and performance.

What's Included:

• Upgraded clutch packs and friction materials
• Reinforced internal transmission components
• Precision-machined parts for improved fitment
• Installation instructions and technical support from ATS Diesel

Ideal For:

This Stage 1 Transmission Package is ideal for Dodge Ram 2500 and 3500 owners who demand greater transmission reliability and smoother shifting under heavy load conditions. It is especially suited for those who tow trailers, haul heavy payloads, or use their trucks in off-road or commercial applications. Enthusiasts looking to extend the life of their 48RE transmission while maintaining factory-like drivability will find this package a valuable upgrade.

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.