Sinister Diesel 11-15 Chevy/GMC Duramax Coolant Filtration System

Sinister Diesel is known for making well-built diesel performance parts, and this coolant filtration system is a great example of that. If you're looking to extend the life of your 2011-2015 Chevrolet Silverado 2500 HD or 3500 HD, or its GMC Sierra counterpart, this kit helps keep your engine's coolant clean. By filtering out contaminants like casting sand and metal shavings, you're protecting critical components such as the water pump, EGR cooler, and oil cooler from premature wear.

This system works by bypassing and filtering a small amount of your engine's coolant while it's running. The filter block itself is CNC machined from 6061 aluminum and anodized in Sinister Blue, giving it a solid look and feel. It attaches to a supplied bracket that uses factory mounting holes, so you won't need to drill into your truck's frame. The kit comes with all the necessary fittings and pre-assembled silicone hoses for a straightforward installation. We recommend changing the first filter after 500 miles, the next two at 3,000 miles each, and then annually after that.