Mishimoto 17-19 Chevrolet Duramax 6.6L L5P Black Silicone Radiator Hose Kit

When you're relying on your Duramax 6.6L L5P for heavy hauling or tough jobs, the last thing you want is a coolant hose failure. The factory hoses, made from rubber and plastic, can degrade over time from heat cycles and high mileage, leading to leaks. This Mishimoto kit directly replaces those stock hoses for your 2017-2019 Chevrolet Silverado 2500 HD and 3500 HD, and GMC Sierra 2500 HD and 3500 HD.

This kit includes five-layer silicone hoses reinforced with heat-resistant embedded fibers. The factory plastic connectors are swapped out for all-aluminum junctions, which handle heat and pressure much better. You also get a new O-ring for the lower hose quick-disconnect fitting, ensuring a leak-free installation. Everything you need is in the box for a straightforward swap that will provide years of reliable service, even in demanding conditions.