Mishimoto MMHOSE-RAM-07HU Top Heater Hose Upgrade for 07.5-24 RAM 2500/3500 6.7L

Vehicle Fitment

• 2007.5-2024 RAM 2500/3500/4500/5500 (6.7L Cummins I6)
• Fitment confirmed across major trims including Laramie, SLT, Big Horn, Tradesman

Features

• Direct upgrade to replace the stock heater hose quick-disconnect
• O-ring-less -10AN connection for improved coolant sealing and reliability
• CNC-machined aluminum adapter resists corrosion and high heat
• Pre-installed thread sealant for leak-free performance
• Heavy-duty worm-gear clamp included for secure fit
• Enhances cooling system reliability under heavy use and towing
• Designed for a direct bolt-on installation - no cutting or trimming
• Backed by Mishimoto Lifetime Warranty

Specifications

• Part Number: MMHOSE-RAM-07HU
• Application: Top heater hose upgrade
• Compatible Engine: 6.7L Cummins turbo diesel I6
• Years: 2007.5-2024 RAM heavy-duty series
• Fitting Type: O-ring-less -10AN connection
• Adapter Material: CNC-machined aluminum
• Includes: Worm-gear clamp for secure installation
• Maximum Temp Rating: Designed for engine-bay coolant temperatures

Included Components

• 1x Mishimoto top heater hose assembly (MMHOSE-RAM-07HU)
• 1x CNC-machined -10AN aluminum adapter
• 1x High-strength worm-gear clamp
• Mishimoto Lifetime Warranty documentation

Product Description

The Mishimoto MMHOSE-RAM-07HU Top Heater Hose Upgrade is engineered to solve one of the common weak points in the cooling systems of heavy-duty RAM trucks equipped with the 6.7L Cummins turbo diesel engine. From 2007.5 through 2024 model years, the factory quick-disconnect heater hose can develop leaks over time due to its O-ring design. This Mishimoto upgrade eliminates that failure point by using an O-ring-less -10AN connection paired with a CNC-machined aluminum adapter for significantly improved reliability and coolant sealing under high-load conditions.

Installation is straightforward and requires no cutting or modification - the hose simply replaces the stock top heater hose in the cooling system and clamps securely with the included heavy-duty worm-gear clamp. With pre-installed thread sealant and premium materials built to withstand heat and pressure, this upgrade is ideal for RAM owners who tow, haul, or drive in demanding conditions where coolant system durability is critical. Backed by Mishimoto's Lifetime Warranty, it offers a long-lasting cooling system improvement over the original equipment setup.