Revive Your Emissions System: Cummins ISL DOC Replacement
What is it?
The Cummins ISL Diesel Oxidation Catalyst (DOC) is a key component in your engine’s aftertreatment system. It’s responsible for converting harmful gases like carbon monoxide and unburned hydrocarbons into cleaner byproducts before they pass into the Diesel Particulate Filter (DPF). A properly functioning DOC supports smoother exhaust flow and helps prevent regen-related issues.
Why choose Cummins ISL DOC?
This direct-fit DOC replacement is engineered to meet Cummins OEM specifications, delivering reliable performance and long-term durability. Whether you’re experiencing repeated regens, poor fuel economy, or emissions warnings, this DOC helps get your ISL engine back to optimal operation—without overspending.
Key Benefits
✅ Built to OEM specs for reliable fit and function
✅ Supports cleaner exhaust and efficient DPF regeneration
✅ Helps lower backpressure, promoting better fuel economy
✅ Durable construction for high-heat, high-load conditions
✅ Direct-fit design simplifies installation with no modifications
Applications
This Cummins ISL DOC is designed for use in a range of medium- and heavy-duty vehicles and equipment powered by the ISL engine. It’s ideal for vocational trucks, transit buses, and off-road machinery where maintaining emissions compliance and system health is essential.
Installation Notes
Ensure the exhaust system is completely cool before removal. Inspect gaskets, clamps, and sensors and replace any worn components. Follow torque specs for proper sealing. After installation, clear any fault codes and confirm that the regeneration process resumes as expected.
Final Thoughts
If your Cummins ISL engine is showing signs of DOC failure, this replacement unit from Tamerx provides a dependable fix. Restore flow, reduce regen downtime, and keep your emissions system running as it should with a trusted, road-ready solution.