GMC Sierra 2500 HD Radiator Coolant Hose Kit - Mishimoto - Red - 11-15. A direct-fit silicone coolant hose kit designed for 2011–2015 GMC Sierra 2500 HD trucks with the 6.6L Duramax engine, offering a durable replacement for aging or leaking factory hoses.

This Mishimoto kit is built from high-grade silicone with five layers of heat-resistant embedded fibers to increase pressure and temperature tolerance compared with stock rubber hoses. CNC-machined billet couplers provide a precise connection to the factory radiator with no cutting required, and T-bolt clamps are included for secure installation. The kit is available in red to match other performance components and pairs well with Mishimoto 6.6L Duramax aluminum performance radiators for a comprehensive cooling upgrade. Backed by Mishimoto’s signature lifetime warranty, this kit is suitable for both stock and lightly modified trucks used on road or off-road.

Features

• High-grade silicone construction with five heat-resistant fiber layers
• CNC-machined 6061 aluminum coupler for direct factory fit
• T-bolt clamps included for secure installation
• Direct fit for 2011–2015 GMC Sierra 2500 HD 6.6L Duramax
• Red finish, fits with Mishimoto 6.6L Duramax aluminum radiators
• Mishimoto lifetime warranty

If you have questions or want help confirming fitment, call us directly — we’re happy to assist. We offer installation and customization services at our two locations in Austin, Texas and the Los Angeles, California area. 512-982-9393 (TX) • 562-981-6800 (CA)

If you plan to purchase multiple items, contact us for possible shipping discounts. We install on premises at both locations.