OTTO-Electric Parts
4921776-OTTO
4921776-OTTO
4921776-OTTO

OTTO 4921776 ECM Engine Control Module for Cummins 6BT 5.9 Diesel Motor ECU Computer Board Controller Unit

Maximize your diesel engine’s performance with the OTTO 4921776 ECM Engine Control Module, a premium aftermarket replacement crafted for reliable operation and precise OEM-matching fitment. This high-quality ECU computer board restores stable electronic control to your Cummins 6BT 5.9 diesel motor, offering a cost-effective alternative to genuine OEM controller units.




  • Order(MOQ)::

    1pc
  • Goods Stock::

    100
  • Payment::

    T/T, Western Union, L/C, Paypal, etc
  • Product Origin::

    China
  • Shipping Port::

    Huangpu, Guangzhou
  • Lead Time::

    In Stock
  • Part No: :

    4921776
  • Model::

    6BT 5.9
  • Application::

    EXCAVATOR

OTTO 4921776 ECM Engine Control Module for Cummins 6BT 5.9 Diesel Motor ECU Computer Board Controller Unit



TheOTTO 4921776 ECM Engine Control Module is a dedicated aftermarket controller designed for Cummins diesel power equipment. As the core Engine Computer Board Controller Unit, it acts as the central brain of the 6BT 5.9 diesel motor, regulating fuel injection, engine speed, temperature and system diagnostics to ensure smooth, efficient and consistent engine running. Engineered to meet strict international industry standards, this ECM module guarantees stable electronic performance, long-lasting durability and hassle-free installation, making it a critical component for maintaining the productivity and reliability of Cummins-powered heavy equipment.


Technical Specifications


Parameter Item
Specific Specification
Product Name

ECM Engine Control Module / ECU Computer Board Controller Unit
Part Number
OTTO 4921776
Cross Reference
Cummins OEM 4921776
Compatible Brand
Cummins
Applicable Engine
Cummins 6BT 5.9 Diesel Motor
Product Type
Engine Electronic Control Module (ECM/ECU)
Condition
Premium Aftermarket Replacement
Application
Diesel Engine Electronic Control & Operation Management


Key Product Advantages




OEM-Grade Perfect Compatibility: Engineered to exact Cummins factory specifications for the 6BT 5.9 diesel motor, ensuring direct plug-and-play installation with no programming, modifications or calibration required. The electrical connectors and mounting points align flawlessly with the original equipment, cutting down installation time and equipment downtime significantly.
Stable & Precise Engine Control: Built with high-grade industrial electronic components and calibrated OEM-matching firmware, this ECM module delivers accurate real-time regulation of fuel delivery, idle speed and engine performance parameters. It eliminates common engine faults such as rough idle, power loss and excessive fuel consumption, fully restoring the original power and efficiency of the Cummins 6BT 5.9 motor.
Heavy-Duty Durability for Harsh Conditions: Encased in a sealed, shock-resistant and heat-dissipating rugged housing, with internal circuits protected from dust, moisture, oil contamination and heavy equipment vibration. This robust design withstands extreme operating temperatures and harsh working environments, reducing failure risks and extending the service life of the control module.



4921776-OT



Applications


This OTTO 4921776 ECM Engine Control Module is specifically designed for the Cummins 6BT 5.9 diesel motor, which is widely fitted on excavators, trucks, generators and other heavy construction and industrial equipment for reliable power output.
Compatible Engine Model:
  • Cummins 6BT 5.9 Diesel Engine
Suitable for all heavy equipment powered by the Cummins 6BT 5.9 diesel motor, including hydraulic excavators, industrial trucks and stationary power units.

About Otto



Guangzhou Otto Engineering Machinery Equipment Co.,Ltd, is a leading manufacturer and distributor of earthmoving parts and equipment in Guangzhou, China. It consists of 3 sister companies, serving many well-known distributors at home and abroad. With more than 20 years of production and distribution experience, OTTO has cultivated an experienced engineer team and a professional sales team, which can ensure the highest service with the highest quality, competitive price and prompt delivery. At the same time, it also supplies parts to the Chinese market, and many Chinese trading companies order from our company. 


Come with us, the best service, the best price, the best supplier you can enjoy !


Our Advantages



1.TECHNICAL SERVICE
We provide modification technology service, the product has been tested modifed, the engine can be directly installed and used.
2.CERTIFICATE
With Export certificate License.Double confirmation before shipping, if we sent the wroncparts we will send corect one.
3.SERVICE TEAM
With professional after-sale team, will help you to trace the goods. And our engineers will assist with any installation issues.
4.TECHNICAL SERVICE
Free Sample is acceptable.We serves manywell-known Hitachi Komatsu Caterpillar Kobelco in your country.


Access our comprehensive Excavator Parts Book covering 50,000+ validated OEM references for Komatsu, CAT, Hitachi, Volvo, and Doosan machinery – cross-search by part number (e.g., Komatsu 111-10-11310), machine model (CAT 320D/EX200-5), or component type (hydraulic pumps, track links, engine rebuild kits) with real-time 3D diagram support. Engineered for zero-mismatch fitment across critical assemblies including Isuzu 6BG1T/Cummins QSB6.7 power systems, ISO-certified undercarriages, and Komatsu HMB-series hydraulic valves, all backed by 24/7 technical interpretation and downloadable PDF catalogs with MOQ/pricing.


At OTTO, we specialize in excavator machinery parts with a global clientele. Our superior products have garnered acclaim worldwide for their quality, durability, and precision engineering. Customers praise our extensive range of parts, from travel reduction gearboxes to hydraulic components, ensuring optimal performance. With a commitment to excellence, we offer top-notch warranties, secure shipping options, and efficient delivery times. Join our satisfied customers worldwide who rely on OTTO for top-tier excavator parts and exceptional service.


FAQ



Q1:What can you buy from us?
A:We are professional dealer in excavator parts, such as desel engine assy,hydraulic pump, hydraulic control valvetravel
motor,diesel fuel system,gearbox parts, swing gearbox motor parts, electrical parts, engine parts, used
excavator,etc.

Q2:How long is the warranted time?
A:For natural broken,Warranty 3-12 months any quality problem will offer support freely.

Q3:What's the shipping way you can offer?
A:(1) Big order: By sea or by air.(It can reduce the costs).

(2) Small order:DHL,TNT,UPS,FEDEX,EMS,ARAMEX.


Q4:What's the terms of the transaction?
A:EXW,FCA,FAS,FOB, C&F,CIF,CPT,CIP,DAF,DES,DDP.
 
Q5:How about the lead time?
A:(1) ln stock: 1-3 days.Always in 24 hours.
(2) Out of stock: lt's according to your quantity, and we have cooperated with factory,We will let you know when we quote.

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