Restore emissions performance with the Skyline aftermarket Cummins 5418478 DOC Inlet Module. This direct-fit replacement for Cummins 5418478, 5418478NX, 5418478RX, 2116695X, 2468125XS, A059N984, 4395106, 4395106NX, 4395106RX, 4394601, 4394601NX, 4394601RX, A056A967, and A055B980 is built to meet or exceed OEM specifications for Cummins ISB 6.7L / B6.7 and Cummins QSB engines. Manufactured in the USA with an Exact-Fit™ design, this Diesel Oxidation Catalyst (DOC) Inlet Module provides reliable installation with no modifications required. This brand-new DOC has no core charge, includes a 3-year unlimited mileage warranty, is EPA compliant, and ships free within the continental United States.
Fits select medium-duty truck, school bus, delivery, vocational, transit bus, and commercial equipment applications equipped with Cummins ISB 6.7L / B6.7 or QSB engines.
Choose the Setup That Fits Your Shop’s Needs
Full Kit (Best Value): Includes (1) DOC, (1) 2871772 gasket, (1) 2866636 gasket, (1) 5417471 clamp, and (1) 2880482 clamp.
DOC Only: Includes the DOC only. No gaskets or clamps included.
Engine Compatibility
Approximate Model Years: 2017 and newer
Cummins: ISB 6.7L / B6.7 / QSB engines
Common Vehicle Applications
Freightliner: M2, Business Class M2
International: 4300, 4400, DuraStar
Kenworth: T270, T370
Peterbilt: 337, 348
Bus chassis, vocational, delivery, municipal, utility, and medium-duty applications equipped with Cummins ISB 6.7L / B6.7 or QSB engines
Built in the USA: Designed, engineered, and manufactured in America.
EPA Compliant: Meets federal emissions standards for applicable particulate matter reduction requirements.
No Core Charge: Brand-new unit with no core return required.
Fast Free Shipping: Free ground shipping within the continental United States.
Warranty: Backed by a 3-year unlimited mileage warranty.
Direct Fit Design: Installs like OEM with no modifications required.
Product images are for reference only. Final components (DOC, gaskets, clamps, sensor locations) depend on the selected configuration. Price is for (1) DOC only.