Radiator

Whether you're hauling the family fifth wheel or driving out to the job site, you rely on your Duramax to get where you need to go. The factory Duramax L5P radiator hoses are constructed from a mixture of molded rubber and plastic. As your truck endures thousands of heat cycles, hours of idle time, and countless high-stress miles, those materials will begin to degrade, harden, and potentially develop leaks. That's why Mishimoto has designed this replacement silicone coolant hose kit for your 2017-2019 6.6L L5P Duramax. This kit features hoses constructed from five layers of silicone with heat-resistant embedded fibers and all-aluminum hose junctions. This combination yields far more robust coolant passages, which will provide years of service in the harshest conditions. This kit also includes a full set of stainless-steel clamps and a replacement O-ring for your lower hose quick-disconnect fitting, providing everything you need for a hassle and leak-free installation. The Mishimoto Silicone Coolant Hose Kit is available in black or red and includes our signature Mishimoto Lifetime Warranty.

Additional Information

Complete radiator coolant hose kit designed to maintain proper coolant flow and system pressure. Includes durable, heat-resistant hoses for leak prevention, reliable performance, and a precise, easy installation.

Part Type

Radiator Coolant Hose Kit

Product Overview

Whether you're hauling the family fifth wheel or driving out to the job site, you rely on your Duramax to get where you need to go. The factory Duramax L5P radiator hoses are constructed from a mixture of molded rubber and plastic. As your truck endures thousands of heat cycles, hours of idle time, and countless high-stress miles, those materials will begin to degrade, harden, and potentially develop leaks. That's why Mishimoto has designed this replacement silicone coolant hose kit for your 2017-2019 6.6L L5P Duramax. This kit features hoses constructed from five layers of silicone with heat-resistant embedded fibers and all-aluminum hose junctions. This combination yields far more robust coolant passages, which will provide years of service in the harshest conditions. This kit also includes a full set of stainless-steel clamps and a replacement O-ring for your lower hose quick-disconnect fitting, providing everything you need for a hassle and leak-free installation. The Mishimoto Silicone Coolant Hose Kit is available in Black, Blue, or Red and includes our signature Mishimoto Lifetime Warranty.

• Constructed from five layers of silicone with heat-resistant embedded fibers
• Includes new lower radiator hose O-ring for leak-free install
• Replaces stock plastic connectors with aluminum for greater resistance to heat and pressure

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Product Details

Reference Information

Radiator Hoses, Upper, Lower, Silicone, Black, Chevrolet, GMC, 6.6L, Duramax, Kit

More tolerant, more efficient, and 100 percent silicone—Mishimoto radiator hose kits offer a boost of performance and looks under your hood! Combining high-grade silicone and heat-resistant embedded fibers, Mishimoto hoses provide exceptional heat reduction, increased pressure tolerance, and a whole lot of satisfaction. Radiator hose kits are available for a wide range of makes and models in black, blue, red, and limited-edition orange (specific makes only) to enhance the appearance of your engine bay. Some models also include hose clamps. Upgrade the performance and style of your vehicle with superior Mishimoto radiator hose kits.