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Detroit Diesel · Fuel System
EA0011400878-C
In stock · ships from Knoxville
This is a core-return Diesel Exhaust Fluid (DEF) supply pump.
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Verified fitment for 8 applications
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All confirmed applications for this part number.
Western Star
Western Star
The 'EA0011400878' base number is a non-air-assisted DEF doser pump for Detroit Diesel engines meeting EPA 10/13 emissions standards. Fitment was verified against aftermarket cross-reference listings for Freightliner and Western Star models [truckpipesusa.com](https://www.truckpipesusa.com/detroit-diesel-non-air-assisted-def-doser-pump-0001404878-0011400878/). The '-C' suffix indicates this is a core unit, not a new or remanufactured part; the core is used across the same applications as the active part number.
Part data verified against 4 catalog sources
Numbers this part supersedes or interchanges with. Showing 16 of 20.
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The pump is responsible for drawing DEF from the tank and delivering it to the selective catalytic reduction (SCR) system, which helps reduce harmful nitrogen oxide (NOx) emissions from the exhaust. It is a non-air-assisted pump that activates only when commanded by the engine's aftertreatment control module. This specific part number is designated as a core, meaning it is a used component intended to be rebuilt or remanufactured, and it typically carries a core deposit when purchased as a reman unit to incentivize returning the old part.
Part Number: EA0011400878-C
DEF PUMP CORE
Dealer: KP Services Crossville
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