Product Overview
Restore emission system performance with this premium Skyline aftermarket PACCAR 2112657XS Diesel Oxidation Catalyst (DOC) Inlet Catalyst Module. Engineered as a direct-fit replacement for PACCAR PX-7 and PACCAR PX-6 engines, this brand-new unit serves as an alternative to OEM and requires no exhaust system modifications for installation, carries no core charge, and is EPA compliant.
Cross References
| Manufacturer / Program | Cross Reference Part Numbers |
|---|---|
| PACCAR OEM (Base Number) | 2112657XS |
| Skyline Aftermarket | BJ0301, BJ0301-M, BJ0301-C |
| Roadwarrior | C0351-ID |
| Dinex | 58206 |
| GESi | GESi-578 |
Choose Your Kit Configuration
Select the setup from the product options above that best fits your shop's needs:
- Full Kit (Best Value): Includes (1) Brand-New DOC, (1) 2871453 gasket, (1) 1844253PE gasket, (1) 2871863 clamp, and (1) 2880483 clamp.
- DOC Only: Includes the replacement catalyst module only. Gaskets and clamps are not included.
Key Features & Specifications
- Proudly Built in the USA: Designed, engineered, and manufactured in America.
- No Core Charge: Brand-new aftermarket component; eliminates the hassle and downtime of shipping a dirty core back.
- Exact-Fit™ Design: Installs identically to the OEM factory component with zero exhaust system modifications required.
- Industry-Leading Warranty: Backed by a 3-year unlimited mileage warranty.
- EPA Compliant: Meets all federal emissions standards for particulate matter reduction requirements.
- Free Shipping: Free ground shipping within the continental United States. Orders placed before 2:00 PM Eastern ship out the same business day.
Vehicle & Engine Application Guide
Fits 2017 and newer (EPA17) medium-duty commercial vehicles equipped with the following PACCAR engines: PACCAR PX-7 (6.7L Inline-6) and PACCAR PX-6 (Legacy configurations). Common chassis applications include:
- Kenworth: T270 / T370 / T380 / T480
- Kenworth Cabover Models: K270 / K370
- Peterbilt: 337 / 348 / 535 / 536 / 537 / 548
- Peterbilt Legacy Models: 325 / 330 (Post 2017 build dates)
- Peterbilt Cabover Models: 220 / 520 Medium-duty vocational applications
*Note: Always verify exact compatibility using your engine serial number, emissions family, or original stamped OEM part number before placing an order.
Compatible OEM Assembly Numbers
This proprietary PACCAR module corresponds to the following factory original equipment internal assembly part numbers:
Disclaimer: Product images are for reference only. The primary display image may present two angles or configuration references for clarity. Each option selection includes one (1) physical DOC unit. Selecting the "Full Kit" option adds the explicitly listed installation gaskets and clamps to your shipment.
