Product Overview
PACCAR 1837300 A029C833 Diesel Oxidation Catalyst DOC
Interchange References: 1837300, 1837300PE, 1837300PEX, A029C833, XN0631, XN0631-M, XN0631-C, XN0631-FSS, C01157-ID, GESi-547, C20-0048, 58041, 2871453, 2866337, 2871863, 2880483
PACCAR 1837300 A029C833 DOC Cross Reference Table
How to Verify Your Unit: This direct-fit Diesel Oxidation Catalyst replaces PACCAR DOC units stamped with any of the OEM or aftermarket cross-reference numbers listed below.
| Manufacturer | Cross Reference Part Numbers |
|---|---|
| PACCAR OEM | 1837300, 1837300PE, 1837300PEX, A029C833 |
| Skyline | XN0631, XN0631-M, XN0631-C |
| FSS Emission Products | XN0631-FSS |
| Roadwarrior | C01157-ID |
| DuraFit | C20-0048 |
| Dinex | 58041 |
| Global Emission Systems | GESi-547 |
Restore exhaust aftertreatment performance with this premium aftermarket PACCAR Diesel Oxidation Catalyst DOC. This brand-new DOC inlet module is a direct-fit replacement for PACCAR 1837300, 1837300PE, 1837300PEX, and PACCAR A029C833, with additional compatible aftermarket references listed in the cross-reference table above. Designed for select PACCAR MX and PACCAR MX-13 EPA10 aftertreatment applications, this DOC installs without exhaust system modifications, carries no core charge, is backed by a 3-year unlimited mileage warranty, is EPA compliant, and ships free within the continental United States.
PACCAR MX-13 DOC Fitment Guide
This PACCAR DOC inlet module is designed for select heavy-duty highway, regional freight, and vocational applications equipped with compatible PACCAR MX and PACCAR MX-13 EPA10 exhaust aftertreatment systems.
- Engine Platforms: Select PACCAR MX and PACCAR MX-13 diesel engine applications.
- Approximate Emissions Era: Commonly associated with select EPA10 applications, approximately 2010 to 2013, depending on vehicle configuration.
- Common Chassis Applications: Select Kenworth T660, Kenworth T680, Kenworth T800, Kenworth W900, Peterbilt 386, Peterbilt 388, Peterbilt 389, Peterbilt 579, and related heavy-duty chassis using the matching DOC assembly.
- Compatible OEM Numbers: 1837300, 1837300PE, 1837300PEX, and A029C833.
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) 2871453 installation gasket, one (1) 2866337 installation gasket, one (1) 2871863 heavy-duty clamp, and one (1) 2880483 heavy-duty clamp.
- DOC Only: Includes one (1) DOC only. Installation gaskets and clamps are not included.
DOC Technical Specifications
| Measurement Parameter | Specification Value |
|---|---|
| Product Type | Diesel Oxidation Catalyst (DOC) Inlet Module |
| Common Search Term | DOC Filter |
| Primary OEM Part Numbers | 1837300, A029C833 |
| Additional OEM Numbers | 1837300PE, 1837300PEX |
| Manufacturer Part Number | Skyline XN0631 |
| Engine Compatibility | PACCAR MX and PACCAR MX-13 |
| Substrate Type | Flow-Through Ceramic |
| Core Condition | Brand-New Aftermarket Unit |
| Core Charge | No Core Charge |
| Warranty | 3-Year Unlimited Mileage Warranty |
| Exhaust Emission Norm | EPA10 Compliant |
Key Features
- Direct-Fit PACCAR DOC: Replaces PACCAR diesel oxidation catalyst applications listed in the cross-reference table above.
- No Core Charge: Brand-new aftermarket DOC with no dirty core return, core tracking paperwork, or return freight expense.
- EPA10 Compliant: Designed for supported PACCAR MX and MX-13 EPA10 aftertreatment applications.
- Brand-New Unit: New aftermarket Diesel Oxidation Catalyst rather than a remanufactured core.
- Available Full Kit: Full Kit option includes one (1) 2871453 gasket, one (1) 2866337 gasket, one (1) 2871863 clamp, and one (1) 2880483 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 DOC Needs Replacement
- Difficulty reaching or maintaining the exhaust temperatures needed for DPF regeneration.
- Frequent, incomplete, or unsuccessful regeneration cycles.
- Diagnostic trouble codes related to DOC catalyst efficiency or exhaust temperature performance.
- Excessive soot loading in the downstream DPF.
- Fuel, oil, or other contamination visible at the catalyst inlet.
- Increased exhaust backpressure or reduced engine performance.
- Physical cracking, melting, corrosion, or damage to the DOC substrate or housing.
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.
