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

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.

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

This Part Fits:

Year

Make

Model

Submodel

2017-2019

Chevrolet

Silverado 2500 HD

High Country

2017-2019

Chevrolet

Silverado 2500 HD

LT

2017-2019

Chevrolet

Silverado 2500 HD

LTZ

2017-2019

Chevrolet

Silverado 2500 HD

WT

2017-2019

Chevrolet

Silverado 3500 HD

High Country

2017-2019

Chevrolet

Silverado 3500 HD

LT

2017-2019

Chevrolet

Silverado 3500 HD

LTZ

2017-2019

Chevrolet

Silverado 3500 HD

WT

2017-2019

GMC

Sierra 2500 HD

Base

2017-2019

GMC

Sierra 2500 HD

Denali

2017-2019

GMC

Sierra 2500 HD

SLE

2017-2019

GMC

Sierra 2500 HD

SLT

2017-2019

GMC

Sierra 3500 HD

Base

2017-2019

GMC

Sierra 3500 HD

Denali

2017-2019

GMC

Sierra 3500 HD

SLE

2017-2019

GMC

Sierra 3500 HD

SLT

## Details

- **Price:** 477.33 CAD
- **Vendor:** Mishimoto
- **Type:** Radiator Hoses

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 477.33 CAD | In stock |

## Images

- Photo - Primary
- User 1
- User 1
- User 1
- Logo Image

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/mishimoto-17-19-chevrolet-duramax-6-6l-l5p-black-silicone-radiator-hose-kit)
> Updated: 2026-06-28