GMC Sierra 3500 HD Radiator Coolant Hose Kit - Mishimoto - Red - `11-`15. This Mishimoto 6.6L Duramax silicone coolant hose kit replaces the factory radiator and lower coolant hoses with a durable, color-matched upgrade designed for 2011–2015 Sierra 3500 HD trucks equipped with the 6.6L Duramax.

The kit is constructed from high-grade silicone and five layers of heat-resistant embedded fibers to improve pressure and temperature tolerance compared with OEM rubber hoses. CNC-machined billet alloy quick-disconnect ends provide a direct factory fit with no cutting required, and the included 6061 aluminum coupler mates the lower radiator hose to the factory radiator. This kit is suitable for both stock and modified trucks and works well alongside Mishimoto aluminum performance radiators. T-bolt clamps are included for a secure installation, and Mishimoto backs the hoses with their signature lifetime warranty.

Features

• High-grade silicone with five reinforcement layers for heat and pressure resistance
• CNC-machined billet quick-disconnect ends for direct fitment
• 6061 aluminum coupler and T-bolt clamps included
• Fits Chevrolet/GMC 6.6L Duramax 2011–2015 (Sierra 3500 HD)

If you have questions or need fitment help, call us directly — we're happy to assist: 512-982-9393 (TX) or 562-981-6800 (CA). We have two locations in Austin, Texas and the Los Angeles, California area where we offer installation and customization services. If you're considering multiple items, contact us for possible shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov