Mishimoto CNC Aluminum Heater Supply and Return Hose Fitting Set

Dodge Durango 11-25 6.4L/5.7L

MMFT-HH-5858-90

Overview:

The Mishimoto CNC Aluminum Heater Supply and Return Hose Fitting Set is a direct-fit replacement designed specifically for the 2011 through 2026 Dodge Durango. The factory heater hose fittings on these models are made from brittle plastic that often fails due to heat and pressure, leading to coolant leaks and potential vehicle breakdowns. This fitting set offers a durable, permanent solution by replacing the weak plastic fittings with precision-machined aluminum components that resist cracking and withstand repeated heat cycles.

Ideal for Durango owners looking to prevent common heater hose failures without the hassle of replacing the entire hose assembly or accessing the firewall, this fitting set provides a reliable upgrade that restores peace of mind and maintains proper coolant flow.

Key Features:

Engineered to solve a frequent failure point in Dodge Durango cooling systems, this fitting set offers the following benefits:

• Direct-fit replacement for the 2011–2026 Dodge Durango heater supply and return hoses
• CNC-machined from high-quality aluminum for superior strength and durability
• Resistant to cracking and deformation caused by heat soak and pressure spikes
• Eliminates the need to replace the entire heater hose assembly or access the firewall
• Simple installation using basic hand tools
• Designed to withstand repeated heat cycles without degradation
• Backed by the Mishimoto Lifetime Warranty for long-term reliability
• Restores coolant system integrity and prevents unexpected coolant loss

Construction & Design:

Each fitting in this set is precision CNC-machined from billet aluminum, ensuring consistent quality and a perfect fit. Aluminum was chosen for its excellent thermal resistance and mechanical strength, making it far superior to the brittle plastic fittings originally installed on the Dodge Durango. The fittings are engineered to endure the harsh conditions of the engine bay, including high temperatures and pressure fluctuations, without cracking or leaking.

The design maintains the factory hose connection style, allowing for a seamless swap with no modifications required. This thoughtful engineering ensures durability and longevity while preserving the vehicle’s original coolant routing and performance.

Installation & Fitment:

Installation is straightforward and requires only basic hand tools, making it accessible for both professional mechanics and experienced DIY enthusiasts. The fitting set replaces the stock plastic quick-disconnect fittings without the need to remove or replace the entire heater hose assembly or access the firewall, significantly reducing labor time and complexity.

This product is a direct-fit solution specifically for the Dodge Durango models from 2011 through 2026, ensuring compatibility and a hassle-free upgrade experience.

What's Included:

• CNC-machined aluminum heater supply hose fitting
• CNC-machined aluminum heater return hose fitting
• Sealing O-rings and necessary hardware for installation
• Installation instructions

Ideal For:

This fitting set is perfect for Dodge Durango owners who want to prevent the common plastic fitting failures that can lead to coolant leaks and vehicle downtime. It is especially beneficial for those who frequently drive in conditions that cause engine heat soak, such as extended idling or hard acceleration, where pressure spikes can cause plastic fittings to crack. Whether you are maintaining your vehicle’s reliability or upgrading for peace of mind, this Mishimoto fitting set offers a durable, long-lasting solution.

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.