Mishimoto Factory-Fit Boot Kit

2003–2007 Dodge Ram 2500 / Dodge Ram 3500 5.9L Cummins

MMBK-RAM-03BK

Overview:

The Mishimoto Factory-Fit Boot Kit is a direct-fit silicone replacement designed specifically for the 5.9L inline-6 Dodge Cummins engines found in 2003 to 2007 Dodge Ram 2500 and 3500 models. This boot kit addresses a common weak point in the intercooler system—factory boots that are prone to leaks and blowouts under high heat and pressure. By upgrading to Mishimoto’s DuraCore silicone boots, owners can ensure reliable, leak-free performance and maintain smooth power delivery from their Cummins diesel engine.

Ideal for truck owners who demand durability and factory-accurate fitment, this boot kit helps prevent unexpected downtime caused by failed intercooler boots. It provides a long-lasting solution that withstands the harsh conditions of diesel performance applications.

Key Features:

Engineered for durability and ease of installation, the Mishimoto Factory-Fit Boot Kit offers the following key benefits:

• DuraCore Technology: Features a synthetic inner layer that resists heat, pressure, fuel, and oil better than standard silicone, extending boot life.
• Direct Factory Fit: Designed to match OEM dimensions and fitment for a seamless replacement without modifications.
• Constant-Tension T-Bolt Clamps: Includes Mishimoto’s premium clamps for consistent, secure sealing and reliable holding power.
• Enhanced Durability: Resistant to common causes of boot failure such as cracking, leaks, and blowouts under boost pressure.
• Lifetime Warranty: Backed by Mishimoto’s commitment to quality and customer satisfaction.

Construction & Design:

The boot kit is constructed from high-grade silicone with Mishimoto’s proprietary DuraCore technology, which incorporates a synthetic inner layer engineered to withstand extreme thermal and chemical exposure common in diesel engine bays. This advanced material composition provides superior resistance to heat degradation, fuel contamination, and oil exposure compared to conventional silicone boots.

Each boot is precision molded to OEM specifications, ensuring a perfect fit and reliable sealing surface. The included T-bolt clamps are crafted from corrosion-resistant stainless steel and feature a constant-tension design that maintains uniform clamping force even under thermal expansion and contraction cycles.

Installation & Fitment:

The Mishimoto Factory-Fit Boot Kit installs easily as a direct replacement for the factory intercooler boots on 2003–2007 Dodge Ram 2500 and 3500 trucks equipped with the 5.9L Cummins engine. No modifications or special tools are required, making it an ideal upgrade for both professional mechanics and DIY enthusiasts. The kit’s factory-accurate fitment ensures a hassle-free installation process and reliable sealing performance right out of the box.

What's Included:

• Silicone intercooler boots with DuraCore inner layer
• Constant-tension stainless steel T-bolt clamps
• Installation instructions

Ideal For:

This boot kit is perfect for Dodge Ram 2500 and 3500 owners who want to maintain or improve the reliability of their 5.9L Cummins diesel engine’s intercooler system. It is especially suited for those who use their trucks for towing, hauling, or off-road applications where boost leaks can cause performance issues or engine damage. Additionally, it is an excellent preventative upgrade for trucks with aging or factory-worn intercooler boots.

Mishimoto is a performance cooling brand offering aluminum radiators, intercoolers, oil coolers, hoses, and supporting hardware built to manage heat on hard-driven street and track vehicles. For boosted setups and towing/off-road rigs alike, Mishimoto upgrades are designed to increase cooling capacity and reliability where factory systems can become a limitation.