Modern diesel engines do more than just power heavy loads — they also have to meet strict emissions rules. The Dodge Ram Cummins 6.7L DOC/DPF (2020–2024, OEM 68259653AD) combines two essential emissions components into one unit: the Diesel Oxidation Catalyst (DOC) and the Diesel Particulate Filter (DPF). Together, they work to reduce pollutants from your truck’s exhaust, helping it run cleaner, smoother, and within regulatory standards. Whether you’re on the highway or at a job site, this integrated assembly plays a big role in keeping your Cummins engine performing responsibly.
Diesel emissions systems are complex, but this DOC/DPF assembly simplifies how exhaust is treated — here’s how it benefits your truck:
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Dual-Function Emissions Control – The DOC works first to oxidize harmful gases like carbon monoxide and unburned hydrocarbons, while the DPF captures soot and trapped particulates.
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Cleaner Exhaust Output – By handling both gas and particulate pollutants, this assembly helps your truck produce exhaust that’s significantly cleaner than without it.
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Helps Maintain Engine Health – Proper exhaust treatment reduces strain on the turbo, aftertreatment sensors, and other components, helping preserve overall engine performance.
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OEM-Level Fit and Reliability – As OEM 68259653AD, this combined unit is built to factory standards for correct fitment and long-lasting operation.
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Reduces Maintenance Headaches – Replacing a degraded DOC or DPF with a single assembled unit can simplify upkeep and help prevent issues like excessive backpressure or frequent regen cycles.
A failing or clogged emissions assembly can lead to reduced power, poor fuel economy, and system warnings that put your truck into protective modes. The Dodge Ram Cummins 6.7L DOC/DPF (OEM 68259653AD) delivers the reliable emissions performance your truck depends on — helping keep it running cleanly, efficiently, and in compliance with modern standards. For Ram owners looking for dependable replacement parts, Tamerx offers quality solutions designed to support both emissions goals and everyday diesel performance.









