The Sinister Diesel Coolant Filtration Kit is the best insurance you can buy for your 6.7L Cummins. The factory cooling system allows casting sand, rust, and metal debris to circulate, which clogs the heater core and shortens the life of vital parts like the water pump, oil cooler, and EGR cooler. Our kit solves this by continuously filtering small amounts of coolant while the engine runs, trapping harmful contaminants before they do damage.
Engineered from CNC-machined billet 6061 aluminum and finished in signature Sinister Blue, this system is built to last. It mounts directly to factory holes (no drilling required) and comes with reinforced silicone hoses that are pre-assembled for leak-proof connections tested to twice the normal system pressure. Maintenance is simple: replace the first filter at 500 miles, the second at 1,500 miles, and then every oil change interval thereafter.
What’s Included
- Genuine WIX Coolant Filter
- Sinister Diesel Billet Filter Block
- Mounting Bracket
- Reinforced Silicone Hoses (pre-assembled)
- Installation Hardware
Features
- CNC-Machined 6061 Aluminum, anodized in Sinister Blue
- Cleaner coolant = longer engine life
- Leak-proof, reinforced silicone hoses
- 1-Year Warranty
Why You Need This Kit:
- Protects your heater core — the most common coolant failure point on Cummins trucks
- Filters out casting sand, metal shavings, and debris that the factory system can’t catch
- Keeps coolant passages clean, extending the life of your water pump, oil cooler, and EGR cooler
- Prevents costly breakdowns by stopping contamination before it reaches critical components
- Easy upkeep — filters are quick to replace with simple, tool-free service
The Sinister Diesel Coolant Filtration Kit is the best insurance you can buy for your 6.7L Cummins. The factory cooling system allows casting sand, rust, and metal debris to circulate, which clogs the heater core and shortens the life of vital parts like the water pump, oil cooler, and EGR cooler. Our kit solves this by continuously filtering small amounts of coolant while the engine runs, trapping harmful contaminants before they do damage.
Engineered from CNC-machined billet 6061 aluminum and finished in signature Sinister Blue, this system is built to last. It mounts directly to factory holes (no drilling required) and comes with reinforced silicone hoses that are pre-assembled for leak-proof connections tested to twice the normal system pressure. Maintenance is simple: replace the first filter at 500 miles, the second at 1,500 miles, and then every oil change interval thereafter.
What’s Included
- Genuine WIX Coolant Filter
- Sinister Diesel Billet Filter Block
- Mounting Bracket
- Reinforced Silicone Hoses (pre-assembled)
- Installation Hardware
Features
- CNC-Machined 6061 Aluminum, anodized in Sinister Blue
- Cleaner coolant = longer engine life
- Leak-proof, reinforced silicone hoses
- 1-Year Warranty
Why You Need This Kit:
- Protects your heater core — the most common coolant failure point on Cummins trucks
- Filters out casting sand, metal shavings, and debris that the factory system can’t catch
- Keeps coolant passages clean, extending the life of your water pump, oil cooler, and EGR cooler
- Prevents costly breakdowns by stopping contamination before it reaches critical components
- Easy upkeep — filters are quick to replace with simple, tool-free service
