3990517 Electronic Control Module ECM For 6B5.9 QSC8.3 QSB5.9 Diesel Engine
Keywords: 3990517, ECM, Electronic Control Module, Engine Control Unit, 6B5.9 ECM, QSB5.9 Controller, QSC8.3 Engine Parts, Excavator Electronic Spare Parts, Aftermarket Replacement ECM
Product Overview
3990517 electronic control module ECM is the core brain component for 6B5.9, QSC8.3, QSB5.9 diesel engine. It collects real‑time signals from multiple engine sensors, accurately controls fuel injection quantity, injection timing, idle speed and other working parameters, optimizes engine power output, fuel consumption and exhaust emission. Our aftermarket ECM unit is manufactured strictly following OEM electrical specifications, finished with rigorous circuit testing and aging test. It features stable signal processing, strong anti‑interference capability and reliable performance under complex construction site vibration and temperature variation. It is ideal replacement spare part for engine electronic system overhaul and troubleshooting.
Detailed Specifications
| Item |
Details |
| Part Number |
3990517 |
| Product Name |
Electronic Control Module / ECM Engine Control Unit |
| Fit Engine Model |
6B5.9, QSC8.3, QSB5.9 Diesel Engine |
| Application |
Engine repair & overhaul, replace faulty, unresponsive or damaged original ECM controller |
| Function |
Receive sensor signals, manage fuel injection strategy, regulate engine working status, realize fault diagnosis, guarantee stable engine operation |
| Type |
Aftermarket New Replacement ECM Control Module |
| Quality Standard |
OEM dimension & electrical parameter standard, circuit aging test, signal communication test and appearance inspection before delivery |
| MOQ |
1 Unit |
| Packing |
Anti‑static shock‑proof inner packing + export hard carton packing |
| Price Term |
EXW / FOB / CIF, price negotiable |
| Delivery Time |
3‑7 days for in‑stock items |
Key Features & Advantages
- Exact OEM Installation & Electrical Matching Consistent with original mounting hole position, connector definition and electrical parameters, perfect fit for matched engine models.
- Stable Circuit Board Craftsmanship High‑quality electronic components, good vibration‑resistant and anti‑interference performance, adapt to harsh construction machinery working environment.
- Strict Pre‑delivery Functional Test Each unit passes full‑function aging test and communication detection to avoid communication failure and signal abnormality.
- Precise Engine Control Performance Accurately execute fuel control logic, help engine keep good power performance and lower fuel consumption.
- Anti‑static Safe Packaging Special anti‑static package protects electronic board from static damage during transit.
Application Scope
Compatible Equipment List: ‑ Excavators, wheel loaders, heavy‑duty trucks, generator sets equipped with 6B5.9, QSC8.3, QSB5.9 diesel engine
Our Company Advantage
We are professional supplier of full‑range diesel engine spare parts, supplying ECM controllers, sensors, wiring harnesses, injectors and other engine electronic & mechanical rebuild components. ‑ Large ready stock for various engine electronic control parts ‑ Factory direct wholesale competitive price ‑ Mixed‑order & one‑stop spare‑parts procurement supported ‑ Professional part‑number matching technical support service
Packaging & Shipping ‑
Inner anti‑static shock‑proof protective package to prevent static damage and physical collision during transportation ‑ Outer reinforced export carton for long‑distance sea and land transportation ‑ Multiple shipping selections: sea freight, air freight, international express for small trial orders ‑ Export documents including Commercial Invoice, Packing List can be provided
Contact Us
If you need more diesel engine spare parts or other construction machinery replacement components, please send your parts list to us. We will offer our best quotation for you quickly.
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