Mishimoto Silicone Radiator Hose Kit

2012–2021 Jeep Grand Cherokee 6.4L SRT V8

Part #: MMHOSE-WK2-12BK

Overview

The Mishimoto Black Silicone Radiator Hose Kit is engineered to enhance the cooling system reliability and performance of your Jeep Grand Cherokee SRT equipped with the 6.4L V8 engine from 2012 through 2021. Designed for enthusiasts and daily drivers alike, this kit replaces the factory rubber radiator hoses with durable, high-quality silicone hoses that offer superior heat resistance and longevity. Whether you are maintaining a stock setup or upgrading your vehicle for increased performance, this kit ensures optimal coolant flow and a secure fit for peace of mind under demanding conditions.

With its direct-fit design, the Mishimoto hose kit simplifies installation while improving the overall efficiency of your cooling system. The black finish adds a sleek, understated look to your engine bay, combining both form and function in one comprehensive upgrade.

Key Features

This radiator hose kit is packed with features that deliver durability, performance, and style:

• Direct-fit replacement hoses engineered specifically for 2012–2021 Jeep Grand Cherokee 6.4L SRT models
• Constructed from premium 4-ply silicone with embedded heat-resistant fibers for enhanced durability
• Capable of withstanding extreme temperatures up to 330°F (165°C), ensuring reliable operation in high-heat environments
• Includes both upper and lower radiator hoses for a complete cooling system refresh
• Equipped with five high-torque worm gear clamps to provide a secure, leak-free seal
• Recommended clamp torque of 22 in-lbs (2.5 Nm) with an operating range of 18–27 in-lbs (2–3 Nm) for optimal sealing
• Available in black to complement your engine bay with a clean, professional appearance
• Suitable for both stock and modified cooling systems, supporting a range of performance applications
• Backed by the Mishimoto Lifetime Warranty, ensuring long-term reliability and customer confidence

Construction & Design

The Mishimoto radiator hoses are crafted from high-grade 4-ply silicone, reinforced with heat-resistant fibers that provide exceptional strength and flexibility. This construction resists cracking, swelling, and deterioration commonly seen in OEM rubber hoses exposed to heat and pressure over time. The hoses are engineered to maintain their shape and integrity under extreme thermal cycling and high-pressure conditions, making them ideal for performance and heavy-duty use.

Each hose is designed with precise dimensions and molded fittings to ensure a direct-fit installation without the need for modifications. The black silicone finish not only offers a sleek aesthetic but also resists oil, coolant, and other automotive fluids, maintaining a clean appearance throughout its service life.

Installation & Fitment

Installation is straightforward thanks to the direct-fit design tailored specifically for Jeep Grand Cherokee SRT models from 2012 to 2021 with the 6.4L V8 engine. The kit includes all necessary components to replace the upper and lower radiator hoses, making it a convenient upgrade for both professional mechanics and experienced DIY enthusiasts. No special tools or modifications are required, and the included high-torque worm gear clamps ensure a secure, leak-free connection when tightened to the recommended specifications.

What's Included

• (1) Upper silicone radiator hose
• (1) Lower silicone radiator hose
• (5) High-torque worm gear clamps

Ideal For

This Mishimoto Silicone Radiator Hose Kit is ideal for Jeep Grand Cherokee SRT owners seeking to improve their vehicle’s cooling system durability and performance. It is well-suited for enthusiasts who demand reliable cooling under spirited driving or track conditions, as well as daily drivers who want a long-lasting, maintenance-free upgrade over factory rubber hoses. The kit supports both stock and modified cooling setups, making it a versatile choice for a wide range of applications.

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.