Description
The Mishimoto 6.6L Duramax Silicone Coolant Hose Kit (MMHOSE-DMAX-11BK) is a direct-fit, black silicone lower radiator hose replacement engineered specifically for the 6.6L Duramax LML engine. Built with five layers of heat-resistant embedded fibers and a 6061 aluminum CNC-machined coupler, this kit mates the lower radiator hose to the factory radiator with billet quick-disconnect ends, so there’s no cutting or modification required for installation.
As part of Mishimoto’s Cooling product line, this specific-fit silicone coolant hose kit is rated to a maximum temperature of 330°F, giving it added pressure and temperature tolerance compared to a factory rubber hose. That extra margin makes it a solid upgrade for both stock and modified Duramax trucks running in tough environments or terrain. The kit includes T-bolt and worm-gear clamps for a straightforward install, and it’s engineered to complement the Mishimoto 6.6L Duramax Aluminum Performance Radiator as part of a long-lasting cooling system. Beyond the black option featured here, this hose kit is also offered in blue and red for owners who want to color-match their engine bay.
Vehicle Applications
This Mishimoto silicone coolant hose kit is a specific fit for the 6.6L Duramax LML platform. It covers the 2011-2015 Chevrolet Express 2500 and 3500 Base, along with the 2011-2016 Chevrolet Silverado 2500 HD LT, LTZ, and WT and the 2011-2016 Chevrolet Silverado 3500 HD LT, LTZ, and WT; the Silverado 2500 HD and 3500 HD High Country trims are covered for 2015-2016. On the GMC side, the kit fits the 2015-2016 GMC Sierra 2500 HD and 3500 HD Base trims, the 2011-2016 Sierra 2500 HD and 3500 HD Denali, SLE, and SLT trims, and the 2011-2014 Sierra 2500 HD and 3500 HD WT trims.
Features
- Direct fit for the 2011-2016 Chevrolet/GMC 6.6L Duramax LML
- 6061 aluminum CNC-machined coupler mates lower radiator hose to factory radiator
- Five layers of heat-resistant fibers and silicone
- T-bolt clamps included for easy install
- Offered in black, blue, or red color options
- Mishimoto Lifetime Warranty
Specifications
- Brand: Mishimoto
- Part Number: MMHOSE-DMAX-11BK
- Product Type: Cooling
- Hose Material: Silicone
- Hose Color: Black
- Maximum Temperature Rating: 330°F
- Clamps Included: Yes
- Grade Type: Performance
- Universal Or Specific Fit: Specific
- Kit Includes: (2) Silicone Hoses, (1) CNC Aluminum Coupler, (4) T-Bolt Clamps, (2) Worm-Gear Clamps, Mishimoto Lifetime Warranty
Frequently Asked Questions
What vehicles does this Mishimoto coolant hose kit fit?
It’s a specific fit for the 2011-2015 Chevrolet Express 2500/3500 Base, 2011-2016 Chevrolet Silverado 2500 HD and 3500 HD LT/LTZ/WT (High Country covered 2015-2016), the 2015-2016 GMC Sierra 2500 HD/3500 HD Base, 2011-2016 Sierra 2500 HD/3500 HD Denali/SLE/SLT, and 2011-2014 Sierra 2500 HD/3500 HD WT — all built around the 6.6L Duramax LML.
What is the maximum temperature rating of this hose kit?
The Mishimoto silicone coolant hose kit is rated to a maximum temperature of 330°F.
What’s included with the MMHOSE-DMAX-11BK kit?
The kit includes (2) Silicone Hoses, (1) CNC Aluminum Coupler, (4) T-Bolt Clamps, (2) Worm-Gear Clamps, and the Mishimoto Lifetime Warranty.
Do I need to cut any factory hoses to install this kit?
No. The kit uses billet CNC’ed quick-disconnect ends for a direct factory fitment, so no cutting is required.
What color options are available for this coolant hose kit?
This specific kit (MMHOSE-DMAX-11BK) is black; the hose kit is also offered in blue and red.
Is this hose kit covered by a warranty?
Yes, it comes with 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.
