Description
The Mishimoto Silicone Coolant Hose Kit (MMHOSE-DMAX-17BK) is a direct-fit replacement for the factory rubber-and-plastic radiator hoses found on 2017-2019 6.6L L5P Duramax trucks. Built with five layers of silicone reinforced by heat-resistant embedded fibers and finished with all-aluminum hose junctions in place of the factory plastic connectors, this kit is engineered to hold up where the OEM hoses eventually crack, harden, or leak.
Whether you’re towing a fifth wheel or running job-site miles day after day, your cooling system takes a beating from constant heat cycles and long idle hours. This Mishimoto silicone coolant hose kit is built to handle that stress, offering a more robust coolant passage than the stock setup so your L5P Duramax stays protected mile after mile. Every kit ships with a full set of stainless-steel worm gear clamps and a replacement O-ring for the lower hose quick-disconnect fitting, so you have everything needed for a clean, leak-free install without hunting down extra hardware.
Vehicle Applications
This kit is a specific fit for 2017-2019 Chevrolet Silverado 2500 HD and 3500 HD trucks in High Country, LT, LTZ, and WT trims, as well as 2017-2019 GMC Sierra 2500 HD and 3500 HD trucks in Base, Denali, SLE, and SLT trims, all equipped with the 6.6L L5P Duramax engine.
Features
- Direct fit for the 2017-2019 Chevrolet/GMC 6.6L Duramax
- Replaces stock plastic connectors with aluminum for greater resistance to heat and pressure
- Includes new lower radiator hose O-ring for leak-free install
- Constructed from five layers of silicone with heat-resistant embedded fibers
- Includes high-quality worm gear clamps for easy installation
- Available in black or red
- Pair with a Mishimoto Performance Aluminum Radiator for even greater cooling system protection
- Backed by the Mishimoto Lifetime Warranty
Specifications
- Brand: Mishimoto
- Part Number: MMHOSE-DMAX-17BK
- Product Type: Cooling
- Hose Material: Silicone
- Grade Type: Performance
- Hose Color: Black
- Clamps Included: Yes
- Universal or Specific Fit: Specific
- Maximum Temperature Rating: 330°F
- Purchase Includes: (1) Silicone Upper Radiator Hose, (1) Silicone Lower Radiator Hose, (7) Worm Gear Clamps, (1) Replacement Quick-Disconnect O-Ring, (2) Zip Ties
Frequently Asked Questions
What vehicles does the Mishimoto MMHOSE-DMAX-17BK hose kit fit?
It is a specific fit for 2017-2019 Chevrolet Silverado 2500 HD and 3500 HD (High Country, LT, LTZ, WT) and 2017-2019 GMC Sierra 2500 HD and 3500 HD (Base, Denali, SLE, SLT) trucks equipped with the 6.6L L5P Duramax engine.
What’s included in the kit?
The kit includes one silicone upper radiator hose, one silicone lower radiator hose, seven worm gear clamps, one replacement quick-disconnect O-ring, and two zip ties.
What material are the hoses made from?
The hoses are constructed from five layers of silicone with heat-resistant embedded fibers, and the hose junctions are all-aluminum rather than the factory plastic.
Is this hose kit available in other colors?
Yes, the Mishimoto Silicone Coolant Hose Kit is available in black or red; this listing is for the black version, MPN MMHOSE-DMAX-17BK.
What is the maximum temperature rating of the hoses?
The hoses carry a maximum temperature rating of 330°F.
Does this kit come with a warranty?
Yes, it is backed by the Mishimoto Lifetime Warranty.
âš WARNING (California Proposition 65): This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
