Genuine Cummins 4394644 Doser Injector | B4.5 D4.0 F3.8 SCR
SKU 4394644
In stock: 1 available · Ships from Kelowna BC
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Match the listed SKU and verified cross-references to your current part number. If fitment is not listed, send AIM Rentals the machine details and current part number before ordering.
The Cummins 4394644 is a Genuine Cummins OEM DEF Doser Injector for the SCR (Selective Catalytic Reduction) aftertreatment system on Cummins B4.5, D4.0, D4.5, F3.8, and F4.5 CM2350/CM2620 engine platforms. This precision injector meters Diesel Exhaust Fluid (DEF) into the exhaust stream to reduce NOx emissions. Stocked in Kelowna, BC — AIM Rentals ships Canada-wide.
Specifications
- Part Number: 4394644
- Manufacturer: Cummins Inc. (Bosch dosing module)
- Type: DEF Doser Injector (Dosing Module)
- OEM Part #: 4394644OE
- Bosch Reference: 0 444 025 092 / 0444B05704
- Application: Cummins CM2350 and CM2620 engine platforms (2018–2024 QSB 4.5L)
- Condition: New Genuine OEM
Fitment
- Cummins B4.5 CM2350 B146C
- Cummins B4.5 CM2620 B158B / B180B
- Cummins D4.0 CM2620 D103B
- Cummins D4.5 CM2620 D104B
- Cummins F3.8 CM2350 F128C
- Cummins F3.8 CM2620 F137B
- Cummins F4.5 CM2620 F139B
Cross-References
- Cummins 4394644 (OEM primary)
- 0 444 025 092 / 0444B05704 (Bosch)
- A055E026, A05502
FAQ
Is this a genuine Cummins dosing injector?
Yes. Cummins 4394644 is verified as a genuine OEM dosing module confirmed by authorized distributors such as TamerX and OEM suppliers.
What does a DEF doser injector do?
It precisely meters DEF into the exhaust stream upstream of the SCR catalyst, enabling the chemical reaction that reduces NOx emissions to comply with Tier 4/EPA emissions standards.
Is this the same as a Bosch dosing module?
The Cummins 4394644 uses a Bosch-supplied dosing module core. The Bosch reference is 0 444 025 092. Both are functionally identical; the Cummins OEM part is preferred for warranty compliance.
Does AIM ship Canada-wide?
Yes — stocked in Kelowna, BC and ships to all Canadian provinces and territories.
| Make | Model | Year | Engine / Spec |
|---|---|---|---|
| [["Cummins","B4.5 CM2350 B146C"],["Cummins","B4.5 CM2620 B158B"],["Cummins","B4.5 CM2620 B180B"],["Cummins","D4.0 CM2620 D103B"],["Cummins","D4.5 CM2620 D104B"],["Cummins","F3.8 CM2350 F128C"],["Cummins","F3.8 CM2620 F137B"],["Cummins","F4.5 CM2620 F139B"]] | |||
Ships from Kelowna BC after order review.
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