

Sinister Diesel Coolant Filtration System with WIX Filter for 2003–2007 Ram 5.9L Cummins
Help remove casting sand, metal shavings, rust and other debris from your cooling system with the Sinister Diesel Coolant Filtration System for 2003–2007 Dodge/Ram 2500 and 3500 trucks equipped with the 5.9L Cummins diesel engine.
The included WIX coolant filter mounts to a CNC-machined 6061 billet aluminum filter block with a blue anodized finish. The supplied mounting bracket uses factory holes, so no drilling is required. Abrasion-resistant hoses and pre-assembled hose fittings simplify installation.
Key features
- WIX coolant filter included.
- CNC-machined 6061 billet aluminum filter block.
- Blue anodized finish.
- Two threaded inlet ports and one outlet port.
- Abrasion-resistant hoses with pre-assembled fittings.
- No-drill mounting using factory holes.
Vehicle fitment
- 2003–2007 Dodge/Ram 2500 and 3500.
- 5.9L Cummins diesel engine.
Confirm your engine before ordering, especially on 2007-model trucks. This kit is for the 5.9L Cummins application.
What's included
- WIX coolant filter.
- Filter block.
- Mounting bracket.
- Hoses and pre-assembled fittings.
- Installation hardware.
Recommended filter service
- Replace the first filter after 500 miles.
- Replace the second and third filters after 3,000 miles of use each.
- After the first three filter changes, replace the filter annually.
Optional filter upgrade
The supplied product information lists a CAT coolant filter upgrade option. This kit includes the WIX filter; confirm the required filter and any additional components before upgrading.
Part number: SD-COOLFIL-5.9-03-W.

