377-8103 Harness Assembly — Precision Control Wiring for CAT 320D
The 377-8103 Harness Assembly is a critical electronic wiring component for Caterpillar 320D and 323D series excavators. Built to resist extreme heat, vibration, and fluid exposure in engine and hydraulic compartments, this harness ensures stable signal transmission and power supply between the ECM, sensors, and actuators for reliable machine performance.
1. Technical Specifications
| Technical Parameter | Specification Details |
|---|---|
| Part Number | 377-8103 (3778103) |
| Component Type | Electronic Control Harness / Wiring Assembly |
| Insulation Material | High-Temperature Cross-Linked Polyethylene |
| Outer Protection | Abrasion-Resistant Nylon Braiding & Corrugated Loom |
| Connector Type | OEM-Standard Sealed Waterproof Multi-Pin Connectors |
| Main Function | ECM Signal Transmission & Sensor Power Supply |
2. Machine Compatibility
This wiring assembly fits the following Caterpillar 20-ton excavator models:
320D Series: 320D, 320D GC, 320D L
323D Series: 323D L
3. Key Features & Advantages
Anti-EMI Shielding: Premium shielding structure eliminates electromagnetic interference, ensuring stable and accurate sensor signal transmission.
IP65-Grade Sealing: Molded waterproof and dustproof connectors prevent damage from moisture, oil, and mud in harsh working environments.
Direct Plug-and-Play: Matches OEM length, routing, and pin configuration for fast, error-free installation.
Vibration-Proof Design: Reinforced internal wiring and strain relief prevent wire breakage under long-term heavy-duty vibration.
Product: Wiring Harness Assembly
Condition: Aftermarket New Replacement
Cross Reference: 3778103
MOQ: 1-5 PCS
Warranty: 6 Months
For bulk orders, technical support, or excavator electronic parts solutions:
Xuzhou Sinoswift Import & Export Co., Ltd.
Contact: +86 13701956981
Email: [email protected]
