Mishimoto Silicone Coolant Hose Kit

2019–2025 RAM Cummins 6.7L

Part #: MMHOSE-RAM-19RD

Overview

The Mishimoto Silicone Coolant Hose Kit is an essential upgrade for your RAM Cummins 6.7L diesel engine, designed to enhance both reliability and style. Factory rubber radiator hoses are known to degrade over time, especially under the demanding conditions of towing, spirited driving, or off-road adventures. These OEM hoses can become brittle, crack, or develop leaks, risking engine overheating and costly repairs. Mishimoto’s high-quality silicone hoses provide a durable, long-lasting solution that maintains optimal coolant flow and prevents failures.

Whether your truck is stock or heavily modified, this direct-fit kit offers a straightforward upgrade that improves the overall integrity of your cooling system. The silicone construction ensures resistance to heat, pressure, and chemical degradation, making it suitable for the rigorous environment of diesel performance and heavy-duty use. With a sleek red finish, these hoses also add a touch of style to your engine bay, showcasing your commitment to quality and performance.

Key Features

The Mishimoto Silicone Coolant Hose Kit is engineered with the modern diesel enthusiast in mind, combining durability, performance, and aesthetics. Here are some of the key features that make this kit an excellent choice:

• Constructed from high-grade 4-ply silicone material, providing superior heat resistance and flexibility compared to factory rubber hoses.
• Replaces the factory upper and lower radiator hoses with a direct-fit design, ensuring a hassle-free installation.
• Resistant to cracking, hardening, and swelling, even under extreme temperature fluctuations and pressure conditions.
• Features a vibrant red color that adds a bold visual upgrade to your engine bay, while also resisting fading over time.
• Designed to support the demanding cooling needs of modified or stock engines, helping to maintain optimal operating temperatures.
• Built with reinforced internal braiding for added strength and longevity, reducing the risk of blowouts or leaks.
• Manufactured and tested to meet or exceed OEM standards for quality and durability.
• Suitable for use in both daily driving and high-performance applications, including towing and off-road use.

Construction & Design

The Mishimoto Silicone Coolant Hose Kit features a robust construction that ensures long-term performance. Each hose is made from high-quality silicone with a four-ply construction, combining multiple layers of silicone and polyester reinforcement. This design provides excellent heat resistance, flexibility, and pressure tolerance, making it ideal for the high-temperature environment of diesel engines.

The hoses are precisely molded to match the factory routing, ensuring a perfect fit without modifications. The vibrant red finish is achieved through a durable, heat-resistant coating that resists fading and cracking, maintaining a fresh appearance over years of use. Reinforced internal braiding adds strength, preventing expansion or collapse under pressure, which helps maintain consistent coolant flow and engine temperature.

Installation & Fitment

The Mishimoto Silicone Coolant Hose Kit is designed as a direct-fit replacement for the factory hoses on 2019 and newer RAM Cummins 6.7L engines. Installation is straightforward and typically requires only basic hand tools. The hoses connect seamlessly to the OEM radiator and engine fittings, with no cutting, drilling, or additional modifications necessary. The kit includes all the hoses needed for a complete upgrade, along with detailed instructions to ensure a smooth installation process.

No special tuning or system adjustments are required after installation, making this an easy upgrade for both DIY enthusiasts and professional mechanics.

What's Included

• High-quality silicone upper radiator hose
• High-quality silicone lower radiator hose
• All necessary clamps and hardware for installation
• Detailed installation instructions

Ideal For

• Ram Cummins 6.7L owners seeking a reliable, long-lasting coolant hose upgrade
• Performance enthusiasts looking to enhance engine bay aesthetics
• Truck owners who tow or operate in extreme conditions requiring durable cooling components
• Anyone wanting to replace aging factory rubber hoses with a premium silicone alternative