Product Overview
Cummins 5509698 A055N645 4394756 4394855 A055J297 Diesel Oxidation Catalyst DOC
Interchange References: 5509698, 5509698NX, 5509698RX, A055N645, 4394756, 4394756NX, 4394756RX, 4394855, 4394855NX, 4394855RX, A055J297, XQ0461, XQ0461-M, XQ0461-C, C0349-ID, C20-0134, 58086, 58312, GESi-564, XQ0461-FSS, 2880215, 5304868, 2880213, 5304849
Restore exhaust aftertreatment performance with this premium aftermarket Cummins 5509698 / A055N645 / 4394756 / 4394855 / A055J297 Diesel Oxidation Catalyst DOC. This brand-new Skyline Diesel Oxidation Catalyst DOC is a direct-fit replacement for Cummins OEM part numbers 5509698, 5509698NX, 5509698RX, A055N645, 4394756, 4394756NX, 4394756RX, 4394855, 4394855NX, 4394855RX, and A055J297. Designed for select Cummins X15, Cummins X12, and compatible heavy-duty aftertreatment applications, this DOC installs without exhaust system modifications, carries no core charge, is backed by a 3-year unlimited mileage warranty, and ships free within the continental United States.
Cummins 5509698 A055N645 4394756 4394855 A055J297 DOC Cross Reference Table
How to Verify Your Unit: Use the cross-reference table below to compare the original stamped OEM part number on your DOC canister, emissions tag, or catalyst housing with compatible OEM and aftermarket interchange numbers.
| Manufacturer | Cross Reference Part Numbers |
|---|---|
| Cummins Primary OEM | 5509698, 5509698NX, 5509698RX, A055N645, 4394756, 4394756NX, 4394756RX, 4394855, 4394855NX, 4394855RX, A055J297 |
| Skyline | XQ0461, XQ0461-M, XQ0461-C |
| Roadwarrior | C0349-ID |
| DuraFit | C20-0134 |
| Dinex | 58086, 58312 |
| Global Emission Systems | GESi-564 |
| FSS Emission Products | XQ0461-FSS |
Cummins X15 X12 5509698 A055N645 DOC Fitment Guide
This Cummins DOC is designed for select heavy-duty commercial vehicles configured with compatible Cummins aftertreatment systems. Always verify exact compatibility using your vehicle's VIN number or original stamped OEM part number on the unit before ordering.
- Engine Platforms: Cummins X15, Cummins X12, and related compatible Cummins heavy-duty diesel aftertreatment applications used in truck, vocational, and motorcoach fleets.
- Common Chassis Applications: Select Peterbilt 389, Peterbilt 567, Peterbilt 579, Kenworth T680, Kenworth T880, Kenworth W900, Freightliner Cascadia, vocational, motorcoach, and heavy-duty fleet applications using the matching DOC assembly.
- Compatible OEM Numbers: 5509698, 5509698NX, 5509698RX, A055N645, 4394756, 4394756NX, 4394756RX, 4394855, 4394855NX, 4394855RX, A055J297
Compatible OEM Assembly Numbers: 4387636, 4387637, 5508391, 5508392, 5508458, 5508564, 5508565, 5508566, 5508613, 5509118, 5509119, 5509158, 5509159, 5509160, 5509163, 5509164, A052T699, A052T700, A062R486, A062R527, A062R531, A062R592, A062R607, A062R609, A062R613, A062R615, A063G419, A063G420, A063G425, A063G434, A063G435, A063G437, A063G438
Choose Your Kit Configuration
Select the setup from the product options above that best fits your shop's needs:
- Full Kit (Best Value): Includes one (1) brand-new DOC unit, one (1) 2880215 aftermarket exhaust gasket, one (1) 5304868 aftermarket exhaust gasket, one (1) 2880213 heavy-duty clamp, and one (1) 5304849 heavy-duty clamp.
- DOC Only: Includes one (1) DOC only. Installation gaskets and clamps are not included.
Cummins 5509698 A055N645 4394756 4394855 A055J297 DOC Technical Specifications
| Measurement Parameter | Specification Value |
|---|---|
| Product Type | Diesel Oxidation Catalyst (DOC) |
| Primary OEM Part Numbers | 5509698, A055N645, 4394756, 4394855, A055J297 |
| Manufacturer Part Number | Skyline XQ0461 |
| Material | Premium Stainless Steel |
| Weight | 52.33 lbs (23.74 kg) |
| Length | 21.41 inches (544.00 mm) |
| Canister Width | 16.61 inches (422.00 mm) |
| Overall Dimensions (W x H) | 16.61 x 7.40 inches (422.00 x 188.00 mm) |
| Exhaust Emission Norm | EPA Compliant |
Cummins 5509698 A055N645 4394756 4394855 A055J297 DOC Key Features
- Direct-Fit Cummins DOC: Replaces Cummins 5509698, 5509698NX, 5509698RX, A055N645, 4394756, 4394756NX, 4394756RX, 4394855, 4394855NX, 4394855RX, and A055J297 diesel oxidation catalyst applications.
- No Core Charge: Brand-new aftermarket DOC with no dirty core return, core tracking paperwork, or return freight expense.
- EPA Compliant: Designed for supported Cummins X15, Cummins X12, and related compatible heavy-duty aftertreatment applications.
- Stainless Steel Construction: Built with premium stainless steel material for durability in heavy-duty exhaust systems.
- Available Full Kit: Full Kit option includes one (1) 2880215 gasket, one (1) 5304868 gasket, one (1) 2880213 clamp, and one (1) 5304849 clamp.
- Free Shipping: Free ground shipping within the continental United States. Orders placed before 2:00 PM Eastern ship out the same business day when inventory is available.
- Warranty Protection: Backed by a 3-year unlimited mileage warranty.
Signs Your Cummins DOC Needs Replacement
- More frequent or incomplete downstream DPF regeneration cycles.
- Diagnostic trouble codes related to DOC catalyst efficiency or exhaust temperature performance.
- Oil, fuel, or soot contamination on the DOC face after upstream engine or turbocharger issues.
- Increased exhaust backpressure or reduced performance caused by aftertreatment restriction.
Multi-Warehouse Dispatch
Orders ship from regional fulfillment hubs to help provide fast delivery to your repair shop or location.
*Note: Always verify exact compatibility using your vehicle's VIN number or original stamped OEM part number on the unit before placing an order.
Disclaimer: Product images are for reference only. Each selected option includes one (1) physical DOC unit. The Full Kit option includes one DOC with the listed gaskets and clamps. The DOC Only option includes one DOC only, with no gaskets or clamps included.
