240-5304 10R-4092 ECM ECU Engine Controller for Caterpillar CAT 140H 966G II C15 C12
Remanufactured 240-5304 ECM engine control module, fits for Caterpillar 3126B, C-10, C-12, C-15, C-16 and C18 engines.
- Interchangeability: 240-5304 / 2405304 / 10R-4092 / 10R4092
- Application: 938G II–988G loaders, 120H–16H graders, 322C/325C excavators, 725–740 trucks, marine & genset
- Quality Guarantee: 100% bench-tested, 6-month warranty; programming to your ESN required
- Fast Shipping: DHL / UPS / FedEx dispatch in 1–5 business days
$1,299.00
-
Free Shipping via FedEx, DHL, UPS, or USPS, Yanwen (3-10 Business Days)
-
1 Year Warranty, Enjoy a full year of warranty, ensuring long-lasting reliability and peace of mind.
-
Free, Hassle-free 90-day return policy for a risk-free shopping experience.
-
100k+ Customers' Top Choice!
Payment Methods:
Product Details
This remanufactured Electronic Engine Control Module (ECM / ECU) is an aftermarket replacement for Caterpillar part numbers 240-5304 and 10R-4092, built as a direct-fit unit covering one of the widest application groups in the range — 3126B, C-10, C-12, C-15, C-16 and C18 engines across wheel loaders, motor graders, excavators, articulated trucks, marine and generator set installations.
Each unit begins as a tested core and is rebuilt at component level. The board is cleaned and inspected under magnification, with capacitors, injector driver components and solder joints renewed wherever measurement calls for it. Housing seals and gaskets are replaced, conformal coating is refreshed, and the finished module is bench-tested under simulated load so it will restore factory-specified operating parameters once programmed to your engine.
- Direct replacement fitment — original mounting pattern, connector layout and harness routing, so no wiring modification or bracket fabrication is required.
- Component-level remanufacture — rebuilt from a tested core with renewed electronics, refreshed conformal coating and resealed housing.
- Exceptionally broad coverage — more than sixty machine models across twenty application categories, from 570B wheel harvesters to 988G wheel loaders.
- Marine and generator set capable — also used on C-12 and C18 marine engines and C18 generator sets, not just off-highway machines.
- Sealed and vibration-resistant housing — die-cast aluminium enclosure with sealed connectors, built for engine-bay heat, moisture and continuous vibration.
- Function-restoring, not performance-altering — supplied to restore original operating parameters only; no calibration changes of any kind are made to the unit.
- 6-month warranty — repair or replacement service provided if any fault appears within the warranty period.
Important: Programming Is Required Before Use
This module is not plug-and-play. Every engine carries its own calibration file, and the unit must be flashed to your specific serial number by a qualified technician using approved diagnostic software before the engine will run correctly. This matters especially on a part number with coverage this broad: the same hardware serves very different machines, and only the correct calibration makes it work on yours.
Please send us the following after purchase:
- Engine Serial Number (ESN) and Vehicle Identification Number (VIN)
- Clear photographs of your current ECM / ECU unit
- A clear photograph of the engine data plate
Installation and removal of an engine control module should always be carried out by an experienced technician. Disconnect the battery before any work begins.
Fitment & OEM Interchange
The following reference numbers are listed for cross-reference and identification purposes only. All trademarks belong to their respective owners.
| Primary Reference Number | 240-5304 / 2405304 |
| Interchange Number | 10R-4092 / 10R4092 |
| Compatible Engine Families | Fits for Caterpillar 3126B, C-10, C-12, C-15, C-16, C18 |
| Condition | Remanufactured — direct replacement |
Application Chart — Compatible with Caterpillar Equipment
| Category | Models |
|---|---|
| Industrial Engine | 3126B, C-10, C-12, C-15, C-16 |
| Petroleum Engine | 3126B, C-15 |
| Marine Engine | C-12, C18 |
| Generator Set | C18 |
| Wheel Loader | 938G II, 950G II, 962G II, 966G II, 972G II, 980G II, 988G |
| Motor Grader | 120H, 135H, 140H, 143H, 14H, 160H, 163H, 16H |
| Excavator | 322C, 322C FM, 325C, 325C FM |
| Wheeled Excavator | M325C MH |
| Articulated Truck | 725, 730, 735, 740 |
| Ejector Truck | 740 |
| Wheel Dozer | 814F, 824C, 824G II, 834G |
| Landfill Compactor | 816F, 826G II, 836G |
| Soil Compactor | 815F, 825G II |
| Integrated Toolcarrier | IT38G II, IT62G II |
| Pumper | CPT372, SBF214, SPP101, SUF557 |
| Mobile Hydraulic Power Unit | 325C |
| Track Feller Buncher | TK1051 |
| Logger | 322C |
| Wheel Harvester | 570B |
| Wheel Tractor | 651B |
| Challenger | MTC835 |
Before ordering: this part number spans a very wide range of machines and build dates, and some models in the list carry more than one module variant. Compare the number stamped on your existing module’s data plate against the reference numbers above. If your label does not appear here, send us a photo of the plate along with your ESN and we will confirm fitment for you before you buy.
Technical Specifications
| Part Name | Electronic Engine Control Module / Engine Control Unit (ECM / ECU) |
| Reference Numbers | 240-5304, 10R-4092 |
| Condition | Remanufactured, bench-tested before dispatch |
| Installation Method | Direct replacement — no wiring or bracket modification |
| Programming | Required — must be flashed to your engine serial number |
| System Voltage | 12V / 24V DC — application dependent, confirm on data plate |
| Housing Material | Die-cast aluminium with sealed gasket interface |
| Connectors | Sealed multi-pin harness connectors, original pin layout |
| Circuit Protection | Conformal-coated PCB, moisture and vibration resistant |
| Testing | 100% functional bench test under simulated load |
| Warranty | 6 months — repair or replacement service |
| Package Contents | 1 x Engine Control Module (mounting hardware not included) |
This unit is an emissions-related component. It is supplied to restore factory-specified performance only, and is not modified, re-calibrated or altered in any way.
Common Failure Symptoms
A failing engine control module rarely dies all at once. These are the symptoms operators report most often before replacement, and the checks worth running first.
| Symptom | What It Usually Points To |
|---|---|
| Engine cranks but will not start | No injector drive signal reaching the fuel system; verify power and ground at the module before condemning it. |
| No communication with diagnostic software | Data link failure between the module and the service tool; check the connector and harness continuity first. |
| Intermittent shutdown while running | Cracked solder joints or a failing internal supply that drops out under heat and vibration. |
| Erratic or impossible sensor readings | Degraded internal reference voltage causing false pressure or temperature values across several channels at once. |
| Repeat injector driver fault codes | Output driver stage failure — codes return on multiple cylinders after new injectors are fitted. |
| Rough running, misfire or unstable idle | Inconsistent timing or fuelling control that persists after fuel system components have been ruled out. |
| Unexplained derate or protective shutdown | The module acting on corrupted sensor inputs; look for derates that appear without matching real-world engine conditions. |
| Corrosion or moisture inside the connector | Failed housing seal allowing water ingress onto the board — a particular risk on marine and landfill applications. |
Rule out the cheap causes first. Battery condition, ground straps, charging system voltage, harness chafing and corroded pins imitate module failure far more often than the module itself. Confirm with a full diagnostic scan before replacing.
Shipping & Quality Guarantee
- 100% quality control — every module is functionally bench-tested and visually inspected before it leaves our facility.
- Dispatch in 1–5 business days via DHL, UPS or FedEx express, with tracking provided as soon as the label is generated.
- Protective packaging — anti-static bag, foam-cushioned carton, sealed against moisture for international transit.
- 6-month warranty — if a fault arises within the period, we provide repair or replacement service.
- Technical support — send us your ESN, VIN and data plate photo and our team will confirm fitment before and after purchase.
Shipping & Customs Notice
The listed price covers the product, shipping and handling only. It does not include import duty, VAT, GST or any local taxes or customs clearance charges. Any such fees are levied by your national customs authority and remain the buyer’s responsibility. Please check your local import regulations before ordering.
All brand names, part numbers and model designations are used for identification and cross-reference purposes only. This product is manufactured and tested to aftermarket replacement standards and is not associated with, sponsored by or endorsed by any vehicle or engine manufacturer. All trademarks are the property of their respective owners.
Reviews
Clear filtersThere are no reviews yet.