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Mishimoto Silicone Coolant Hose Kit, Chevy/GMC (2006-10) 6.6L Duramax 2500 & 3500 (Black)

Rubber is out, and silicone is in for your Duramax coolant hoses! A leaking coolant hose can lead to serious engine damage if not quickly identified. Upgrade your cooling system with the Mishimoto 6.6L Duramax silicone coolant hose kit for the perfect combination of performance and durability. Mishimoto Duramax coolant hoses are manufactured with high-grade silicone and four layers of heat-resistant embedded fibers to provide increased pressure and temperature tolerance.

The Mishimoto Duramax coolant hose kit is ideal for use on both stock and modified trucks for any environment or terrain. This hose kit also has billet CNC'ed quick disconnect ends for a direct OEM fitment with absolutely no cutting required. The Mishimoto 6.6L Duramax silicone coolant hose kit, like all of their Duramax performance parts, includes the Mishimoto Lifetime Warranty.

-Direct fit for the 2006–2010 Chevrolet/GMC 6.6L Duramax
-6061 aluminum CNC-machined coupler mates lower radiator hose to factory radiator
-Four layers of heat-resistant fibers and silicone
-Max temperature of 330°F
-Efficiently reduces heat
-Increases pressure tolerance
-OEM replacement fit
-T-bolt clamps included for easy install
-Mishimoto Lifetime Warranty

***See additional notes below for the details of the amazing Mishimoto lifetime warranty***
Was: $360.00
Sale: $324.00
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Save: $36.00
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Heat Resistant Embedded Fibers



Hose 1: 2.44" (at ends), 1.97", 1.00", .67"
Hose 2: 1.77"

Hose 1: 2.80" (at ends), 2.44" , 1.38" , 1.1"
Hose 2: 2.17"

Hose 1: 6mm
Hose 2: 5mm

-CNC machined from T-6061 Aluminum
-Mates lower radiator hose to the either the OEM or Mishimoto radiator
-Features pre-installed and lubricated rubber O-ring
-Retains OEM snap ring

(2) – Silicone Hoses
(1) – CNC Aluminum Coupler
(2) – 2.25" T-bolt Clamps
(2) – 2.75" T-bolt Clamps

Mishimoto Performance (MP), warrants all of its products under its 'no questions asked' limited lifetime warranty policy. Regardless of the defect in product, Mishimoto will replace the original product. Warranty claims must be accompanied by the original sales receipt from an authorized dealer.

A trained professional should install all MP products. Any issues with compatibility or installation should be addressed before attempting to install the product.

The purchaser's remedy for breach of this limited warranty, exclusive of all other remedies provided by law, is expressly limited to repair or replacement of any part or parts. All products returned for warranty consideration must be returned to MP with all transportation expenses prepaid.

MP shall not be responsible for damages to its products or injury to persons using the products in any manner that would constitute improper operation, including but not limited to: incorrect opening of radiator pressure caps, burst hoses, unintended application or usage not intended by MP, negligence, improper installation, or any other use that may cause damages or injury. MP shall not be responsible for injury or harm to persons or property when caused by persons or vehicles using its products.

Mishimoto, under its no questions asked warranty policy, will provide a warranty for all claims including vehicles involved in accidents. Warranty claims must include pictures of the accident and an official police report, and must be within three months of the accident.

All Mishimoto products are engineered to fit with OEM applications, as well as other Mishimoto products.

Mishimoto will not be held responsible for fitment issues caused by attempted installation of additional aftermarket parts. This includes, but is not limited to, performance parts and any other non-OEM replacement parts. Fitment with different brands cannot be guaranteed.

Furthermore, Mishimoto will not be held responsible for fitment issues caused by an accident. Many times, clearances needed for installation are very strict. If a vehicle has been involved in a front-end accident, available space for a product such as a thicker aluminum radiator may be compromised.

For all warranty claims, please contact Mishimoto.


Shipping Information

  • Item Requires Shipping
  • 10.0 lbs.
  • W12.0000” x H12.0000” x L24.0000”
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