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Detroit Diesel  |  SKU: 4720700555

4720700555 | Genuine Detroit Diesel® Doser Valve For DD15

$34900
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Description:
A doser valve 4720700555 is a device that controls and measures the amount of a substance being delivered into a system. The exact meaning depends on the context, but it’s most commonly used in diesel engines and industrial fluid systems.

Part Number: 4720700555
Condition: New
Manufacture/Brand: Detroit Diesel

Fits 4720700555 For Detroit Diesel DD15

Purpose of using 5018485BXR:

 

1. Reduce harmful emissions

  • Injects Diesel Exhaust Fluid (DEF) to reduce NOx gases.

  • Helps meet environmental regulations.

2. Regenerate the Diesel Particulate Filter (DPF)

  • Injects small amounts of fuel into the exhaust.

  • Raises exhaust temperature to burn off soot buildup.

3. Improve engine efficiency & compliance

  • Keeps the emissions system working properly.

  • Prevents clogging and expensive repairs.


Signs of a Bad Doser Valve 5018485BXR:

1. Check Engine Light

  • Most common symptom

  • Often related to emissions or DEF system codes

2. Failed DPF Regeneration

  • DPF warning light

  • Soot buildup

  • Frequent regens

  • Strong exhaust smell

If the fuel doser isn’t injecting properly, the exhaust won’t get hot enough to burn soot.

3. Excessive Smoke

  • Black smoke (poor combustion)

  • White smoke (unburned fuel during regen)

4. DEF System Warnings (for DEF doser)

  • “Incorrect DEF Quality”

  • “No engine restart in ___ miles”

  • DEF countdown warning

  • SCR system fault

5. Poor Engine Performance

  • Reduced power (limp mode)

  • Poor fuel economy

  • Rough running during regen

6. Crystallized DEF Buildup

If it’s leaking:

  • White crystal deposits around the injector

  • Corrosion near exhaust piping

 

About the Manufacturer – Detroit Diesel:

Detroit Diesel is a leading American manufacturer of heavy-duty diesel engines, transmissions, and aftertreatment systems, primarily for the commercial trucking industry. Founded in 1938 and now a subsidiary of Daimler Truck North America, Detroit is best known for its DD Series engines — including the DD13, DD15, and DD16 — which power Freightliner and Western Star trucks.

Detroit also produces advanced technologies such as Detroit™ Axles, Detroit™ Connect telematics, and integrated powertrains, offering fleet operators improved fuel efficiency, uptime, and diagnostics. The company is headquartered in Detroit, Michigan, and continues to play a central role in modernizing emissions systems and performance standards in heavy-duty transportation.

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