Sinister Diesel Coolant Filtration System – 2019–2024 Ram 2500 / 3500 6.7L Cummins
Fitment
Fits 2019–2024 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins diesel engine.
⚠️ IMPORTANT FITMENT NOTICE
This kit fits with the factory Ram intake and Sinister Diesel Cold Air Intake.
Some aftermarket cold air intakes may interfere with the coolant filter housing or mounting bracket.
If your truck has an aftermarket intake, verify clearance before ordering.
Key Features
- Helps Prevent Costly Heater Core Repairs – Filters contaminants that can clog the heater core, restrict coolant flow, and leave your Ram with little or no cabin heat
- Helps Avoid Expensive Dash Removal – Heater core replacement can require extensive dashboard disassembly and potentially cost thousands of dollars in parts and labor
- Removes Harmful Coolant Contaminants – Captures casting sand, rust, metal particles, sediment, scale, and other debris circulating through the cooling system
- Bypass Coolant Filtration – Continuously filters a small amount of coolant while maintaining normal primary cooling system flow
- WIX 24070 Coolant Filter – Non-chemical spin-on filter captures debris without introducing additives into the coolant
- Helps Protect Critical Cooling Components – Cleaner coolant helps protect the heater core, water pump, EGR cooler, oil cooler, seals, and other small coolant passages
- CNC-Machined 6061 Billet Aluminum Filter Block – Precision machined for strength, durability, and long-term reliability
- Vehicle-Specific Mounting Bracket – Installs using existing factory mounting locations with no drilling required
- Reinforced Silicone Hoses – Pre-assembled for straightforward installation and dependable connections
- Easy Filter Maintenance – Replaceable spin-on filter makes routine service quick and simple
- Sinister Blue Anodized Finish – Provides additional surface protection and signature Sinister Diesel styling
- 1-Year Warranty – Backed by Sinister Diesel for quality and reliability
- FREE SHIPPING
Product Overview
Help Prevent a Clogged Heater Core Before It Becomes a Costly Repair
A clogged heater core can turn into one of the most frustrating and expensive cooling system repairs on your 2019–2024 Ram 2500 or 3500 Cummins.
Rust, casting sand, sediment, metal particles, and other contaminants circulating through the coolant can gradually collect inside the heater core's narrow passages. As those passages become restricted, coolant flow decreases, potentially leaving your truck with weak cabin heat or no heat at all.
The real expense comes when the heater core needs to be replaced. On many Ram trucks, this repair requires extensive dashboard disassembly, resulting in a labor-intensive job that can cost thousands of dollars.
The Sinister Diesel Coolant Filtration System is designed to help prevent this problem by capturing contaminants circulating through your cooling system before they can accumulate inside the heater core.
Why Your 6.7L Cummins Needs Coolant Filtration
Your factory Cummins cooling system does not include a dedicated coolant filter. That means contaminants such as casting sand, rust, scale, metal particles, and sediment can continue circulating through the engine as the coolant flows.
Over time, this debris can accumulate inside the heater core, EGR cooler, oil cooler, radiator, and other small coolant passages. Abrasive particles can also contribute to premature wear on water pump components and cooling system seals.
Our bypass coolant filtration system addresses this problem by continuously routing a small amount of coolant through a dedicated WIX spin-on filter while the engine is running. As coolant circulates through the bypass circuit, contaminants are captured and removed from circulation, gradually helping clean the cooling system.
Because the filter operates independently of the primary coolant flow path, it does not place a restrictive filter directly in the engine's main cooling circuit.
Built for Your Cummins. Designed for Long-Term Protection.
The system features a CNC-machined 6061 billet aluminum filter block finished in signature Sinister Blue, a vehicle-specific mounting bracket that uses existing factory mounting locations, and reinforced silicone hoses with pre-assembled connections.
Installation requires no drilling and adds a dedicated coolant filtration circuit while retaining the factory cooling system's normal operation.
Whether your Ram is used for daily driving, heavy towing, hauling, or commercial work, keeping contaminants out of the coolant helps protect some of the most expensive components in your cooling system.
A coolant filter is a small investment compared to the cost and inconvenience of replacing a clogged heater core.
Recommended Coolant Filter Service Interval
- Initial Filter – Replace after 500 miles
- Second Filter – Replace after approximately 1,500 additional miles
- Third Filter – Replace after approximately 3,000 additional miles
- Regular Maintenance – Replace at every oil change
The initial filter changes help remove existing contamination from the cooling system. Continued filter maintenance helps capture new debris as it develops.
What's Included
(1) WIX 24070 Coolant Filter
(1) Sinister Diesel CNC-Machined Billet Aluminum Filter Block
(1) Vehicle-Specific Mounting Bracket
Reinforced Silicone Hoses
Pre-Assembled Hose Connections
Required Installation Hardware
Frequently Asked Questions
Q: Can a clogged heater core cause my Ram Cummins to lose cabin heat?
A: Yes. Rust, casting sand, sediment, and other contaminants can accumulate inside the heater core's narrow coolant passages. As coolant flow becomes restricted, the heater may produce weak heat or stop heating properly. Other cooling system and HVAC problems can cause similar symptoms, so proper diagnosis is important.
Q: How does the Sinister Diesel Coolant Filtration System help prevent heater core failure?
A: The system continuously removes suspended contaminants from the coolant as the engine operates. By reducing the amount of debris circulating through the cooling system, it helps prevent buildup inside the heater core and other small coolant passages.
Q: How much does it cost to replace a clogged heater core on a Ram 2500 or 3500?
A: Depending on labor rates and repair requirements, heater core replacement can cost thousands of dollars. On many Ram trucks, the repair involves extensive dashboard disassembly, making labor a significant part of the expense. Adding coolant filtration helps reduce the risk of contaminant-related heater core clogging.
Q: What coolant filter does this kit use?
A: The kit includes a WIX 24070
