ranroswang@hksparkling.com 
+86 138 2341 8469
374-2640 Engine Control Module (ECM) for CAT C4.4, C6.6 & Excavator 320D2
Function: Acts as the "brain" for the engine, managing fuel injection, timing, and other critical engine functions to ensure optimal performance and emissions compliance.
Associated Engine Models: Compatible with C4.4, C6.6, and C7.1 ACERT industrial and excavator engines.
Primary Applications
This control module is found in a wide variety of Caterpillar equipment, including:
· Excavators: 313D2, 318D2, 320D2, 320GC, 320GX, 323D2, 326D2, 329D2, 330D2, and M315D2–M324D2 wheeled models.
· Wheel Loaders: 924K, 930K, 938K, 950L, and 962L.
· Track-Type Tractors (Dozers): D3K2, D4K2, D5K2, D6K2, and D6N.
· Pipelayers: PL61.
· Asphalt Pavers: AP500F, AP555F, AP600F, and AP655F.
Thank you for choosing SPARKLING MACHINERY, your reliable supplier of CAT electronic control parts. The 374-2640 ECM is a genuine Caterpillar engine control module designed for C4.4/C6.6/C7.1 engines and 320D2 series excavators. Built with high-strength aluminum housing and industrial-grade circuit boards, it ensures stable engine performance, precise fuel injection control, and accurate fault diagnosis. Pre-programmed and ready for plug-and-play installation after matching the machine serial number, it minimizes downtime for your CAT D2 excavator.
The SPARKLING MACHINERY NEW 374-2640 Cont-GP-E Photo:
Why Choose the SPARKLING 374-2640 Cont-GP-E?
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- Advanced Processing: High-speed data handling for precise control of common-rail fuel injection systems.
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- Rugged Construction: Designed with a vibration-resistant housing to survive the harsh environment of an excavator engine bay.
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- Optimized Efficiency: Improves fuel economy by precisely matching engine output to hydraulic demand.
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- Diagnostic Compatibility: Fully compatible with CAT Electronic Technician (ET) for fast troubleshooting and parameter adjustments.
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Common Maintenance Parts for CAT 320D2
To ensure the longevity of your electronic components, always maintain a clean electrical and fuel system:
| Part Name | CAT Part Number | Application |
| Control Group (ECM) | 374-2640 | Engine/Machine Control |
| Fuel Injector (C7.1/C6.6) | 320-0680 | Fuel Delivery System |
| Engine Oil Filter | 1R-0739 | C4.4 / C6.6 Lubrication |
| Primary Fuel Filter | 326-1644 | Moisture & Contaminant Removal |
| Wiring Harness | 381-2499 | ECM Connectivity |
Q&A Section
Q1: Does the 374-2640 come pre-programmed for my specific machine?
A: Generally, blank ECMs require "flashing" with the correct software files using CAT ET. Please verify if the unit is pre-loaded for a 320D2 or a 313D2.
Q2: What causes a 374-2640 controller to fail?
A: The most common causes are voltage spikes (from improper jump-starting), water ingress into the wiring harness connectors, or extreme overheating due to poor engine bay ventilation.
Q3: Can this controller be used on the older 320D (non-D2) models?
A: No. The 374-2640 is specifically designed for the D2 series electronics and the updated C4.4/C6.6 engine configurations.
About SPARKLING MACHINERY:
- Founded in 2013, SPARKLING focuses on high-quality excavator parts across hydraulics, undercarriage, engines and electrical systems. We prioritize stability, precision and continuous service, offering worldwide distribution, tailored solutions and strict QC to help customers reduce cost and increase uptime.
Get In Touch:
- Replace your failing ECU confidently. Contact SPARKLING for pricing, lead time, and technical support — restore optimal machine control quickly and reliably.
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📦 Packing
1. Packaging methods: Carton box + Wooden case/Pallet + Anti-rust treatment
2. Export-standard packaging to ensure safety during transportation
3. Custom packaging available upon request
4. Dimensions and weight can be provided for freight calculation
🚚 Shipping
1. Available shipping methods: Sea freight, Air freight, Express delivery (DHL, UPS, FedEx, etc.)
2. LCL (Less than Container Load) and FCL (Full Container Load) options are supported
3. For Russian clients, we can introduce the forwarder agent to you
4. Delivery time: Ships within 1-3 working days after payment (for items in stock)
💳 Payment
1. Accepted methods: T/T, Bank Transfer, PayPal, Alipay, WeChat Pay, Western Union
2. Deposit + balance payment available for large or custom orders
3. Flexible payment options—feel free to contact us for details
📌 Frequently Asked Questions (FAQs)
Q: Which excavator models is this part compatible with?
A: This product is compatible with major brands such as CAT, KOMATSU, HITACHI, and more. Custom specifications are also available.
Q: How can I make sure I’m selecting the correct part?
A: You can send us a photo of the old part, part number, or your excavator model, and we will help you confirm the right match.
Q: Is there a warranty for this product?
A: Yes, we offer a 6-month quality guarantee under normal use.
Get a free quote
We are committed to producing the highest quality products at the most competitive prices. Therefore, we sincerely invite all interested companies to contact us for more information.
Contact us
Email: ranroswang@hksparkling.com
Wechat: +86 136 0901 0879
Skype: foreverlucia1
WhatsApp: +86 136 0901 0879
Address: No. 514-515, Hulin Road, Tianhe District, Guangzhou, China.
Sparkling Machinery Co.,Ltd
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Whatsapp: +8613609010879