Cummins ISC 8.3, ISL 9 DOC 2011-2013

Power Clean, Run Efficient: Cummins ISC 8.3 and ISL 9 DOC (2011–2013)

What is it?

The Cummins Diesel Oxidation Catalyst (DOC) is a vital part of your engine’s aftertreatment system, designed to reduce harmful emissions and improve exhaust flow. Built for ISC 8.3 and ISL 9 engines, it oxidizes hydrocarbons and carbon monoxide into cleaner gases, helping your vehicle run efficiently while meeting emissions standards.

Why choose this DOC?

Engineered to OEM specifications, this DOC is designed specifically for Cummins ISC 8.3 and ISL 9 engines produced between 2011 and 2013. It restores proper exhaust performance, supports effective Diesel Particulate Filter (DPF) operation, and prevents issues like soot buildup or reduced fuel efficiency. Its robust construction ensures dependable performance under demanding driving conditions.

Key Benefits

✅ Designed for Cummins ISC 8.3 and ISL 9 engines (2011–2013)
✅ Reduces harmful exhaust gases for cleaner operation
✅ Helps extend DPF lifespan and maintain fuel efficiency
✅ Resistant to heat, corrosion, and vibration
✅ Direct-fit replacement for simple, accurate installation

Applications

This DOC fits Cummins ISC 8.3 and ISL 9 engines used in medium and heavy-duty trucks, buses, and vocational equipment from 2011–2013. It’s ideal for operators who require reliable emissions control and consistent exhaust system performance.

Installation Notes

Before installing, inspect the exhaust system for leaks or damage. Clean all mounting surfaces and replace gaskets for a tight seal. Torque all fasteners to Cummins specifications. After installation, perform a regeneration cycle to verify proper function and exhaust flow.

Final Thoughts

When your Cummins ISC 8.3 or ISL 9 engine needs restored emissions performance, this Diesel Oxidation Catalyst delivers OE-quality reliability you can trust. Built for durability, efficiency, and compliance, it keeps your truck running cleaner and stronger. Tamerx has it in stock and ready to ship today.