4921776 ECM ECU Engine Control Unit for Cummins ISB ISL ISX CM850 Peterbilt 386 387
Brand: Compatible with Cummins / Peterbilt
Part Number: 4921776
Interchange Part Numbers: 4921776NX, 4921776RX
$950.00
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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 | 4921776 |
| Interchange Part Numbers | 4921776NX, 4921776RX |
Product Details
Heavy-Duty 4921776 ECM ECU Engine Control Module for Cummins & Peterbilt
Keep your fleet running at peak performance with the 4921776 ECM ECU Engine Control Unit. This high-precision electronic module is the core of the CM850 control system, specifically designed for 2006 to 2016 Cummins engines, including the versatile ISB, QSB, ISL, and ISX series. Additionally, this unit is a critical replacement part for Peterbilt 386 and 387 truck models, ensuring that your long-haul vehicle maintains optimal fuel timing, torque delivery, and emission control.
I. Broad Application for On-Highway and Industrial Use
The 4921776 (interchangeable with 4921776NX and 4921776RX) is engineered for a decade of Cummins engine excellence across multiple platforms:
- Class 8 Trucks: Direct compatibility with Peterbilt heavy-duty chassis, managing the complex logic required for cross-country logistics.
- Mid-Range Engines: Reliable control for ISB and QSB series used in buses, delivery trucks, and construction equipment.
- Heavy-Duty Power: Optimized to manage the high-horsepower requirements of the ISL and ISX engine families.
II. The Advantage of a NEW CM850 Control Module
In the trucking industry, reliability equals profit. While many opt for remanufactured units, our NEW 4921776 ECM offers superior longevity over used boards that may have hidden micro-cracks:
| Industrial Components | Built with high-grade materials to resist the extreme vibration found in Peterbilt 386/387 engine compartments. |
| Circuit Protection | Enhanced defense against voltage spikes and sensor short-circuits to prevent sudden signal loss. |
| OEM Standards | Every unit is manufactured and tested according to the original factory’s rigorous technical standards for 100% compatibility. |
III. Mandatory Installation & Technical Guidelines
IMPORTANT TECHNICAL NOTICE:
- Custom Programming Required: This ECM must be programmed with the specific “Flash File” matching your engine’s horsepower, CPL, and transmission. It is not plug-and-play.
- Verification Required: After purchase, please provide a photo of your Original ECM Part Number and Engine Nameplate to guarantee hardware revision accuracy.
- Expert Handling: We strongly recommend an experienced diesel technician performs the swap to ensure proper grounding and harness inspection.
IV. Your Trusted Partner: liuchuangparts.com
12-Month Warranty
Comprehensive protection and rapid after-sales support to ensure your Cummins-powered Peterbilt stays on the road.
Tested for Excellence
Investing in a part that has been tested for the rigors of the road, prioritizing a “Customer First” approach in every shipment.
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