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Heating and Cooling Oil and Fluid Coolers

Sinister Diesel

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

$337.99 $259.99 Save $78.00

SKU: S004 SD-COOLFIL-6.6-11-W

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INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

Part #: SD-COOLFIL-6.6-11-W

Add years of life to your diesel engine with this Coolant Filter Bypass System. Removing contaminates such as the casting sand and metal shavings means your engine's water pump, EGR cooler and oil cooler will last longer. This kit is designed to bypass and filter small amounts of the engine's coolant while your diesel engine is running. The CNC machined billet 6061 aluminum anodized construction filter block attaches to a supplied bracket, which mounts to factory holes so no drilling is required. Filter block includes 2 threaded inlet ports and 1 outlet port. This kit includes all fittings needed for installation. The filter can be easily unscrewed for replacement. We recommend replacement of the first filter at 500 miles with replacement of the second and third filters is at 3,000 miles each. After 3 changes, filter replacement can be done once a year. The silicone hoses fittings are pre-assembled for simple, leak-proof connections that factory tested at twice the recommended radiator cap pressure., Note: This item will not fit trucks that have dual alternators, Features: Construction - 6061 Aluminum Filter Block, Silicone Hose, Product Design - CNC Machined 6061 Aluminum, Anodized in Sinister Blue, Performance Notes - Cleaner coolant for longer engine life, Special Note - Recommended Tools: 9/16';, 13/16'; wrench, 8mm socket, 3/8'; 12 point socket or 5/16'; combination wrench, large adjustable wrench, regular screw driver, utility knife, diagonal cuttersIncludes:Genuine WIX Coolant Filter, Filter Block, Mounting Bracket, Installation HardwareNOTE: Will not work on later 2015.5 Plus Trucks,

Sinister Diesel Coolant Filtration System for Chevy / GMC Duramax 2011-2015

MIA's Description

The Sinister Diesel Coolant Filtration System is designed to extend the lifespan of your diesel engine by removing impurities from the coolant. It's specifically for 2011-2015 GMC 2500 and Chevy/GMC 6.6L Duramax LML models. The system features a CNC machined billet 6061 aluminum anodized filter block and includes a Genuine WIX Coolant Filter, mounting bracket, and installation hardware. Installation is straightforward with no drilling required. It is important to note that this system will not fit vehicles with dual alternators.

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Specifications

BrandSinister Diesel
Part NumberS004 SD-COOLFIL-6.6-11-W

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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