4943134 ECM Engine Control Module for Cummins CM2150D ISB6.7 ISC8.3 ISL8.9
4943134 ECM engine control module for Cummins CM2150D ISB6.7, ISC8.3 and ISL8.9 engines.
- Interchangeability: Direct replacement for part number 4943134 — same housing, mounting points and connector layout.
- Application: Fits for Cummins ISB6.7, ISC8.3 and ISL8.9 engines running the CM2150D control system.
- Check Your Variant: CM2150D only — not interchangeable with CM2250 or CM850 units. Match the number on your current ECM label.
- Programmed Before Dispatch: Send your ESN and VIN after checkout — we flash it to your engine before shipping.
$699.00
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Bench-Tested - Every unit powered up and function-tested before dispatch.
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6-Month Warranty - From delivery, against defects in materials and workmanship.
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30-Day Returns - Unused items in original packaging. RMA required.
Product Details
The 4943134 is a remanufactured CM2150D engine control module (ECM), built as a direct replacement for Cummins ISB6.7, ISC8.3 and ISL8.9 engines in medium-duty trucks, buses, motorhomes and vocational equipment.
Each module is opened, inspected and cleaned, with worn or heat-stressed components replaced and every connector pin checked for corrosion and retention. The finished unit is then programmed to the engine data you send us and bench-tested on a simulator — power-up, sensor inputs, injector and actuator driver outputs, and datalink communication — so it arrives ready to bolt in.
- Part number: 4943134 (CM2150D control system)
- Engines: ISB6.7, ISC8.3 and ISL8.9 with CM2150D electronics
- Installation: direct replacement — same mounting and connector layout as the unit removed
- Condition: remanufactured, built and tested to factory specifications
- Programmed to your ESN before dispatch — no dealer flashing needed after delivery
- Supplied in anti-static protective packaging
Send Us Your ESN and VIN — We Program The Module Before It Ships
Every CM2150D engine carries its own calibration, so this module is flashed in our workshop to match your engine before it leaves — it is not sent out blank. The 1–3 business day dispatch window starts the moment we receive your engine information. Please send the following right after checkout:
- Engine Serial Number (ESN) — 8 digits, on the engine data plate
- Vehicle Identification Number (VIN) or equipment serial number
- Clear photo of the label on your current ECM
- Clear photo of the engine data plate
Installation note: Installation or removal by an experienced diesel technician is recommended. Disconnect the batteries before unplugging the ECM harness connectors, and inspect connectors and ground straps for damage before fitting the new unit.
Fitment & OEM Interchange
Brand names and part numbers below are used for OEM cross-reference only, to identify compatibility. This is an aftermarket remanufactured part and is not produced or endorsed by the engine manufacturer.
| Part Number | Search Variants | Control System / Engines |
|---|---|---|
| 4943134 | 4943134 — confirm any superseding number on your ECM label | CM2150D — Compatible with Cummins ISB6.7, ISC8.3, ISL8.9 |
Application Chart
| Equipment Category | Engine (CM2150D) |
|---|---|
| Medium-duty trucks (box, flatbed, delivery) | For Cummins ISB6.7, ISC8.3 |
| School, transit and shuttle buses | For Cummins ISB6.7, ISL8.9 |
| Class A diesel-pusher motorhomes | For Cummins ISB6.7, ISC8.3, ISL8.9 |
| Refuse, dump and vocational trucks | For Cummins ISC8.3, ISL8.9 |
| Fire apparatus and emergency vehicles | For Cummins ISC8.3, ISL8.9 |
Confirm before ordering: Compare 4943134 with the part number on the label of your current ECM and check that your engine data plate lists a CM2150D control system. Exact fitment is application dependent — if you are unsure, send us a photo of both labels and we will confirm compatibility before you buy.
Technical Specifications
| Part Name | ECM Engine Control Module (Electronic Engine Control Unit) |
| Reference Numbers | 4943134 |
| Control System | CM2150D |
| Condition | Remanufactured |
| Installation Method | Direct replacement, bolt-on |
| Programming | Programmed before dispatch to your ESN — no flashing required after arrival |
| System Voltage | 12V / 24V DC — application dependent, confirm on data plate |
| Housing Material | Die-cast aluminum, sealed |
| Connectors | Same layout as the 4943134 unit removed — application dependent, confirm against your current ECM |
| Circuit Protection | Internal reverse-polarity and transient protection per factory design |
| Testing | Bench-tested — powered up and function-tested before dispatch |
| Warranty | 6 months from delivery, against defects in materials and workmanship |
| Package Contents | 1 × ECM module (wiring harness and mounting hardware not included) |
This module is programmed with the factory-specified calibration for your engine serial number and is intended solely to restore factory-specified performance. Emissions-related settings are not altered.
Common Failure Symptoms
| Symptom | What It Usually Points To |
|---|---|
| Engine cranks normally but will not fire | ECM not powering up or not driving the fuel system — check ECM power and ground first |
| Scan tool cannot connect to the engine | No datalink response from the ECM, often an internal processor or power-supply failure |
| Check engine light with internal ECM fault codes | Codes such as ECM critical internal failure indicate a module-level fault |
| Engine stalls at random and restarts after cooling down | Heat-related failure on the ECM circuit board or cracked solder joints |
| Several injector circuit codes at the same time | Failed injector driver inside the ECM rather than multiple bad injectors |
| Engine stuck in derate or rough, unstable idle | ECM misreading sensor inputs, or a corrupted calibration |
| Green or white corrosion on ECM connector pins | Water intrusion — often damages the board itself, not just the connector |
Rule out the cheap causes first: Many no-start and no-communication complaints come from weak batteries, loose or corroded ground straps, a blown ECM power fuse or a damaged harness. Load-test the batteries and check voltage at the ECM connector before replacing the module.
Shipping & Quality Guarantee
- Bench-Tested: every unit is powered up and function-tested before dispatch.
- Fast Dispatch: dispatched in 1–3 business days, counted from receipt of your ESN and VIN for programming.
- Free Express Shipping: DHL / FedEx / UPS, delivered in 3–8 business days, with tracking issued within 24–48 hours.
- Protective Packaging: anti-static bag and shock-absorbing carton.
- 6-Month Warranty: from delivery, against defects in materials and workmanship — repair or replacement provided.
- 30-Day Returns: unused items in original packaging, RMA required.
- Technical Support: send us your data plate photo or fault codes and our team will help confirm fitment and diagnosis.
Shipping & Customs Notice
The price covers the product and shipping only. It does not include import duties, VAT, GST or any other local taxes and customs clearance fees, which are the buyer’s responsibility.
All trademarks, brand names and part numbers are used for compatibility reference only. LIUCHUANG Parts is an independent aftermarket supplier and has no affiliation with, authorization from or endorsement by any engine or equipment manufacturer.
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