Sinister Diesel Coolant Filtration System – 2019–2024 Ram 2500/3500 6.7 Cummins Diesel
Why You Need This Kit:
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Protects your heater core — the most common coolant failure point on Cummins trucks
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Filters out casting sand, metal shavings, and debris that the factory system can’t catch
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Keeps coolant passages clean, extending the life of your water pump, oil cooler, and EGR cooler
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Prevents costly breakdowns by stopping contamination before it reaches critical components
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Easy upkeep — filters are quick to replace with simple, tool-free service
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Description:
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:
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Genuine WIX Coolant Filter
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Sinister Diesel Billet Filter Block
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Mounting Bracket
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Reinforced Silicone Hoses (pre-assembled)
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Installation Hardware
Features:
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CNC-Machined 6061 Aluminum, anodized in Sinister Blue
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Cleaner coolant = longer engine life
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Leak-proof, reinforced silicone hoses
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1-Year Warranty
Coolant Filter Q&A
for Sinister Diesel 2019–2024 6.7L Cummins Coolant Filtration Kit
What filter does this kit use?
The Sinister Diesel 6.7 Cummins Coolant Filtration Kit includes a WIX 24070 spin-on coolant filter. It traps casting sand, rust, and metal shavings that cause heater core, EGR cooler, and oil cooler failures.
Why a bypass filter instead of inline?
The system filters a small percentage of coolant each time the engine runs until all coolant has been cleaned. An inline filter could block flow if it ever clogged, but our bypass design has a built-in fail-safe—coolant still circulates normally with zero risk to the engine or components.
Why WIX?
It offers the perfect balance of filtration and flow for the Cummins 6.7L system. The compact size fits our bracket perfectly, and the 27-micron media removes fine debris without affecting coolant pressure.
Does it change coolant chemistry?
No. The WIX 24070 is a non-chemical filter—no pellets or additives. It won’t alter your coolant blend or require SCA top-offs.
How often should I replace the filter?
• First change: 500 miles
• Second: around 1,000 miles
• Third: at 3,000 miles
• After that: every oil filter service
This schedule keeps your cooling system clean and prevents buildup in small coolant passages.
Will it restrict coolant flow?
No. The filter is engineered for high flow and low restriction, so your coolant pressure stays stable while debris is trapped safely inside the element.
How does this protect my Cummins engine?
By constantly cleaning the coolant, the system prevents abrasive debris from circulating and wearing out your water pump, heater core, or coolers—saving you from costly repairs.
Quick Takeaway
• Kit is designed specifically for Ram 2500/3500 Cummins
• 27-micron filtration for debris control
• Safe bypass design—no coolant blockage risk
• Maintenance made easy with common WIX replacements
• Extends cooling-system life and reliability
