Cummins ISC 8.3, ISL 9 DOC 2011-2013

Keep Emissions Clean and Power Consistent: Cummins ISC 8.3 and ISL 9 DOC (2011–2013)

What is it?

The Cummins Diesel Oxidation Catalyst (DOC) is a crucial emissions component designed to convert harmful exhaust gases into cleaner emissions. Specifically made for ISC 8.3 and ISL 9 engines, it helps reduce hydrocarbons and carbon monoxide while maintaining smooth exhaust flow and reliable engine performance.

Why choose this DOC?

This DOC is built to meet OEM specifications for Cummins ISC 8.3 and ISL 9 engines produced between 2011 and 2013. It supports efficient exhaust aftertreatment by promoting proper oxidation, helping the Diesel Particulate Filter (DPF) function effectively. With durable construction and precise fitment, it offers dependable long-term performance under demanding operating conditions.

Key Benefits

✅ Engineered for Cummins ISC 8.3 and ISL 9 engines (2011–2013)
✅ Converts harmful exhaust gases into cleaner emissions
✅ Helps extend DPF life and reduce regeneration frequency
✅ Made with corrosion- and heat-resistant materials for durability
✅ Direct-fit design for hassle-free installation and proper sealing

Applications

This DOC fits Cummins ISC 8.3 and ISL 9 engines used in a variety of on-highway trucks, buses, and vocational vehicles built between 2011 and 2013. It’s ideal for fleet operators and drivers who need consistent emissions control and reliable exhaust system performance.

Installation Notes

Before installation, inspect the exhaust system for cracks, leaks, or soot buildup. Clean all connection surfaces, use new gaskets, and torque bolts according to Cummins specifications. After installation, perform a regeneration cycle to confirm optimal exhaust flow and emissions function.

Final Thoughts

When your Cummins ISC 8.3 or ISL 9 engine starts showing signs of restricted exhaust flow or frequent regens, this Diesel Oxidation Catalyst offers the dependable, OE-quality replacement you can count on. Designed for clean operation and long-lasting durability, it keeps your vehicle compliant and running strong. Tamerx has it in stock and ready to ship today.