Free Ground shipping within the continental USA. Other options, including overnight, are available at checkout. We ship from several warehouses located throughout the USA. Orders placed after 2:00pm Eastern time will ship next business day
Warranty:
Skyline Emissions, Inc offers a 3-year, unlimited mileage warranty on all their DPFs and DOCs
California Orders - Returns – Cancellations:
Like ALL aftermarket DPFs, this item cannot be shipped to California. Please contact us if you are not sure this is the correct replacement. See our Shipping – Returns – Cancellations Policy in the top menu above
Have questions? Call an expert at 760-355-8900, 9am - 9pm EST
Like all aftermarket units, this Skyline Cummins DOC cannot be shipped to California.
American made Skyline aftermarket Cummins 4394820 DOC filter, your low-cost heavy-duty replacement meets OEM specifications. Skyline Emissions specializes in the design, development, and manufacture of a complete line of Cummins, Diesel oxidation catalyst Filters (DOC) and related emissions critical components. Developed by an engineering team with decades of diesel emissions control experience, Skyline DOCs combine Exact-Fit™ design with exceptional quality and extensive performance testing. Skyline means greater value because our design, state-of-the-art manufacturing and testing capability have resulted in a durable DOC with extended service life. Skyline’s Cummins aftermarket 4394820 DOC is designed and manufactured in the USA, built to last, and keeps your fleet running with lower operating costs.
The Cummins Aftermarket 4394820 DOC Inlet Catalyst Module Replacement Kit from Filter Service and Supply is a premium solution for maintaining your diesel engine's performance. Engineered for a precise fit and maximum durability, this DOC kit effectively reduces exhaust emissions while ensuring compliance with environmental standards.
Price is for one 4394820 DOC Inlet Module; pictures are for reference only. Please contact us if you have any questions or are not sure if this is the correct replacement.