4354531 ECM ECU for Cummins QSB4.5 QSB6.7 QSL9 CM2850 Engine Control Unit
Brand: Compatible with Cummins
Part Number: 4354531
Interchange Part Numbers: 4354531NX, 4354531RX
$1,050.00
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1 Year Warranty, Enjoy a full year of warranty, ensuring long-lasting reliability and peace of mind.
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Product Highlights
Overview
| Brand | Compatible with Cummins |
|---|---|
| OEM P/N | 4354531 |
| Interchange Part Numbers | 4354531NX, 4354531RX |
Product Details
Advanced 4354531 Engine Control Module (ECM) for Cummins CM2850 Systems
Optimizing your engine’s performance starts with a reliable “brain.” The 4354531 ECM ECU Engine Control Unit is a high-precision component specifically engineered for Cummins CM2850 control systems. Whether your machine is powered by a QSB4.5, QSB6.7, or a high-torque QSL9, this electronic control module manages the complex electronics that drive modern diesel efficiency. We provide brand-new units designed to withstand the vibration, heat, and high-duty cycles of construction and industrial environments.
I. Versatile Compatibility for QSB & QSL Series
The 4354531 (also known by interchange numbers 4354531NX and 4354531RX) is a versatile controller supporting a wide range of engine displacements:
- Compact Power: Specifically for B3.3 and QSB3.3 engines.
- Mid-Range Workhorses: Optimized for QSB4.5 and QSB6.7 series, commonly found in excavators and loaders.
- Heavy-Duty Performance: Engineered for QSC8.3 and QSL9 engines used in larger industrial and power generation applications.
II. Why Choose a New 4354531 Over Refurbished Units?
In the demanding world of heavy machinery, an ECM failure means immediate job site stoppage. A NEW 4354531 ECM provides distinct advantages:
| Zero Fatigue | New internal capacitors and circuit paths that haven’t been degraded by years of extreme heat cycles. |
| OEM Parameters | Manufactured and tested to meet the exact parameters and CM2850 logic of the original factory design. |
| High Reliability | Reduces the risk of “ghost codes” and intermittent sensor communication errors common in older modules. |
III. Critical Installation & Calibration Tips
IMPORTANT TECHNICAL NOTICE:
- Mandatory Programming: This ECU is a blank module. It must be programmed with the correct “Flash File” matching your engine’s specific horsepower and torque curve.
- Data Verification: Please provide a clear photo of your Engine Nameplate and Original ECM Part Number after purchase to ensure hardware revision accuracy.
- Professional Service: We recommend a certified technician handle installation. Static protection and correct connector torque are vital to protecting the unit.
IV. Your Partner in Reliability: liuchuangparts.com
6-Month Warranty
Our 4354531 modules are backed by a 6-month warranty period, providing you with peace of mind and excellent after-sales support.
Modern Standards
Representing the latest updates in manufacturing and testing standards for a smooth, efficient transition to a new control unit.

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