Answer
Dec 10, 2025 - 05:21 PM
If you don't change your Sinister Diesel Coolant Filtration System filter on your 2019-2024 Ram 2500/3500 Cummins 6.7L, the factory coolant flow remains unaffected since the Sinister kit is a bypass filter. However, regular filter changes help prevent buildup of contaminants, maintaining optimal cooling efficiency, protecting engine components, and ensuring long-term engine reliability and performance.
