Cummins DOC Pancake Inlet 4394906 4394906NX

Maintain proper exhaust treatment and emissions system performance with this aftermarket DOC Pancake Inlet designed for select Cummins EPA21 applications. Featuring a lightweight metallic substrate that heats quickly and reduces thermal mass, this Diesel Oxidation Catalyst (DOC) helps improve aftertreatment efficiency and overall system responsiveness. A proprietary catalytic coating promotes effective exhaust gas treatment and consistent emissions performance under demanding operating conditions. Complete with clamps and gaskets for a secure, leak-free installation, this direct-fit replacement is built for long-term reliability and backed by a 3-year warranty.

Specifications

• OEM Replacement Part Numbers: 4394906, 4394906NX
• Emission Standard: EPA21
• Component Type: DOC (Diesel Oxidation Catalyst) Pancake Inlet
• Designed for Cummins Exhaust Aftertreatment Systems
• Metallic Substrate for Lower Thermal Mass and Faster Warm-Up
• Proprietary Catalytic Coating for Effective Emissions Performance
• Includes Clamps & Gaskets
• Warranty: 3-Year Manufacturer Warranty
• For Use in 13" Systems
• Dimensions: 21.41" L x 16.61" W x 7.40" H

Fitment

Verify OEM number prior to purchase.

Fits the following models:

• EPA21 Cummins engines
• Applications requiring a 13" DOC Pancake Inlet assembly

Direct aftermarket replacement for OEM #s:

• 4394906
• 4394906NX
• 4394906RX
• 5509700
• 5509700NX
• 5509700RX
• A055R708
• A071V070
• A074Z258

Important Information

• Returns are accepted within 30 days after receipt of product with a valid RMA number.
• Returns are subject to a 25% restocking fee.
• Damaged returns are subject to refusal.
• See our Return Policy for more information and instructions to set up a return.
• California Prop 65 WARNING: This product may expose you to a chemical known to the State of California to cause cancer and birth defects or other reproductive harm.
• Not for use or sale in California.
• Verify OEM number(s) before ordering to ensure proper fitment.
• Any mention of OEM names, numbers, or descriptions is for identification and compatibility verification purposes only and does not imply the product is an OEM part.

For questions or help finding a part, reach out to customer service at 833-773-3039.