Cummins ISC 8.3, ISL 9 DOC 2011-2013

Run Cleaner, Go Farther: Cummins ISC 8.3 and ISL 9 DOC (2011–2013)

What is it?

The Cummins Diesel Oxidation Catalyst (DOC) is an essential emissions control component that converts harmful exhaust gases into cleaner emissions. Designed for ISC 8.3 and ISL 9 engines, it helps maintain proper exhaust flow and ensures efficient operation while keeping your engine compliant with emissions standards.

Why choose this DOC?

Built to meet OEM specifications, this DOC fits Cummins ISC 8.3 and ISL 9 engines from 2011–2013. It supports effective aftertreatment performance by reducing hydrocarbons and carbon monoxide levels, extending Diesel Particulate Filter (DPF) life, and minimizing backpressure for smooth power delivery. With durable materials and precision fitment, it’s made to last through tough operating conditions.

Key Benefits

✅ Engineered for Cummins ISC 8.3 and ISL 9 engines (2011–2013)
✅ Reduces harmful exhaust gases for cleaner operation
✅ Improves DPF efficiency and extends regeneration intervals
✅ Built from heat- and corrosion-resistant materials
✅ Direct-fit design for easy installation and reliable sealing

Applications

This DOC fits Cummins ISC 8.3 and ISL 9 engines commonly found in medium and heavy-duty trucks, buses, and vocational vehicles from 2011 through 2013. It’s perfect for fleet owners and drivers seeking dependable emissions control and consistent exhaust performance under daily use.

Installation Notes

Inspect the exhaust system before installation to ensure all components are clean and damage-free. Replace gaskets and hardware as needed, and torque all bolts to Cummins specifications. After installation, perform a system regeneration to confirm optimal exhaust flow and emissions function.

Final Thoughts

If your Cummins ISC 8.3 or ISL 9 engine is experiencing restricted exhaust flow or frequent regenerations, this Diesel Oxidation Catalyst provides an OE-quality solution you can rely on. Designed for durability and efficiency, it keeps your vehicle clean, compliant, and ready for the road. Tamerx has it in stock and ready to ship today.