Managing diesel emissions is more than ticking regulatory boxes—it begins with maintaining clarity in your exhaust stream. The OEM 4329543RX Diesel Oxidation Catalyst (DOC) plays a pivotal part in this, helping clean harmful pollutants before they reach downstream treatment stages. Built to Cummins specifications, this genuine DOC ensures cleaner exhaust flow, reducing wear and supporting the health of your entire aftertreatment system.
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Efficient Pollutant Breakdown
The OEM 4329543RX efficiently converts harmful exhaust components like hydrocarbons and carbon monoxide into cleaner byproducts. Cleaner exhaust promotes healthier downstream systems and smoother emissions control. -
Enhances Overall Aftertreatment System Health
With its precise catalytic function, this DOC helps reduce strain on downstream components such as DPFs and SCRs—enhancing longevity and reducing the need for premature part swaps or maintenance. -
Streamlined Installation with OEM Fit
Crafted to Cummins OEM specs, the 4329543RX DOC is a direct, no-hassle replacement—designed for quick, reliable integration with minimal downtime. -
Helps Stabilize Regeneration and DPF Lifespan
A well-functioning DOC contributes to better thermal conditioning for passive DPF regeneration. That means your filter stays cleaner longer and avoids triggering disruptive maintenance cycles. -
Warranty Assurance and Easy Core Return
Tamerx Diesel Parts backs this DOC with a solid one-year or one-million-mile warranty, giving you durable coverage you can count on. Plus, the core return policy simplifies servicing—return the worn unit and get refunded, hassle-free.
Reliable emissions cleaning starts at the DOC stage—and the OEM 4329543RX is the first line of defense against exhaust contaminants. Choose OEM precision and dependable protection from Tamerx Diesel Parts to safeguard your aftertreatment system and keep your Cummins ISX running cleanly and efficiently.