Mishimoto Silicone Radiator Hose Kit

Ram 2500 / 3500 15-18 6.7L Diesel/6.4L/5.7L

Part #: MMHOSE-RAM-15BK

Overview

The Mishimoto Silicone Radiator Hose Kit is a premium cooling system upgrade designed specifically for 2015–2018 Ram 2500 and Ram 3500 trucks equipped with the 6.7L Cummins diesel engine. This kit replaces the factory rubber radiator hoses with high-quality silicone hoses engineered to withstand the extreme heat, pressure, and demanding conditions typical of heavy-duty diesel applications.

Ideal for both stock and modified trucks, these hoses enhance cooling system reliability and durability, reducing the risk of leaks, cracks, and premature failure. Whether you tow heavy loads, haul equipment, or push your Ram to its limits, Mishimoto’s silicone hoses ensure optimal engine temperature management and long-term peace of mind.

Key Features

Engineered for durability and performance, the Mishimoto Silicone Radiator Hose Kit offers the following benefits:

• Constructed from high-grade 4-ply silicone with embedded heat-resistant fibers for superior heat and pressure tolerance
• Includes both upper and lower main radiator hoses for a complete cooling system upgrade
• Internal spring reinforcement in the lower hose prevents collapse under vacuum conditions, maintaining consistent coolant flow
• Available in black to complement your vehicle’s factory styling
• Direct fitment for 2015–2018 Ram 2500 and Ram 3500 models with the 6.7L Cummins engine
• Resistant to oil, coolant, and environmental degradation for extended service life
• Improves cooling system reliability under heavy load and high-temperature conditions
• Backed by the Mishimoto Lifetime Warranty for long-term confidence

Construction & Design

The Mishimoto Silicone Radiator Hose Kit is crafted from premium 4-ply silicone reinforced with heat-resistant fibers, delivering superior strength and flexibility compared to OEM rubber hoses. This multi-layer construction provides excellent resistance to heat, pressure, and chemical exposure commonly encountered in diesel engine cooling systems.

The lower radiator hose features an internal spring coil that prevents hose collapse during rapid coolant flow changes or vacuum conditions, a critical design enhancement that ensures consistent coolant circulation and mirrors the factory hose’s functionality with improved durability. Each hose is precision-molded to match the exact contours and dimensions of the stock hoses, guaranteeing a seamless, leak-free fit without any modifications.

Installation & Fitment

Installation of the Mishimoto Silicone Radiator Hose Kit is straightforward and designed as a direct replacement for the factory hoses on 2015–2018 Ram 2500 and Ram 3500 trucks with the 6.7L Cummins engine. No cutting, trimming, or additional modifications are required, making this kit an ideal maintenance or performance upgrade.

While professional installation is recommended to ensure proper hose routing and secure clamp placement, experienced enthusiasts can complete the swap with basic hand tools and mechanical knowledge. Upgrading to silicone hoses helps prevent future coolant leaks and reduces the frequency of hose replacements, enhancing overall cooling system reliability.

What's Included

• Upper radiator hose (silicone, black)
• Lower radiator hose with internal spring reinforcement (silicone, black)
• Installation instructions

Ideal For

This Mishimoto Silicone Radiator Hose Kit is perfect for Ram 2500 and Ram 3500 owners who demand enhanced cooling system reliability and durability. It is especially beneficial for:

• Owners of stock or modified 6.7L Cummins trucks seeking a long-lasting cooling system upgrade
• Diesel enthusiasts who tow heavy loads or operate in high-temperature environments
• Drivers looking to prevent common coolant hose failures and maintain optimal engine temperatures
• Anyone wanting a professional-grade replacement backed by a lifetime warranty

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.