381-2499 Wiring Harness for CAT C7 C7.1 Engine

381-2499 Wiring Harness for CAT C7 C7.1 Engine | Cable Harness AS

2026-01-15
Posted by Winston

Genuine 381-2499 Wiring Harness for CAT C7 & C7.1 Engines: Restore Electrical Integrity

Intermittent sensor faults, unexplained warning lights, or communication errors in your equipment can often be traced to a compromised engine wiring harness. The 381-2499 WIRING HARNESS FOR CAT C7 C7.1 ENGINE is the complete OEM cable harness assembly designed to restore reliable electrical connectivity throughout the engine. This genuine part, also identified as 3812499, replaces the complex network of wires and connectors that link critical sensors, actuators, and the Engine Control Module (ECM) on Caterpillar® C7 and C7.1 diesel engines.

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Direct Replacement for CAT C7 & C7.1 Engine Applications

This CAT engine wiring harness is engineered as a direct, plug-and-play replacement for the C7 and C7.1 ACERT™ engines. These engines power a wide range of Caterpillar equipment. Key compatible machine families include:

For Caterpillar Hydraulic Excavators: Fits models like the 312D, 313D, 315D, 318D, 319D, 320D, 323D, and later series utilizing the C7/C7.1.
For Caterpillar Wheel Loaders: Compatible with loaders such as the 938M, 950M, 962M, 966M, and 972M equipped with this engine platform.
For Caterpillar Motor Graders: Applicable to 140M, 160M, and other M-Series graders with the C7/C7.1 power unit.
For Caterpillar Trucks & Other Equipment: Also used in on-highway trucks (e.g., CT660/680) and various industrial applications.

Critical Verification: Electrical harnesses can vary by machine model and emission tier. Always provide your machine model and Engine Serial Number (ESN) to confirm the exact 381-2499 harness fits your application.

Key Benefits of This OEM Engine Cable Harness

OEM Quality for Reliable Signal Integrity: This genuine CAT cable harness is built with factory-specified wire gauges, abrasion-resistant sheathing, and sealed connectors. It ensures protection against vibration, heat, oil, and moisture, providing stable electrical signals.
Eliminates Electrical Gremlins & Downtime: Replaces frayed, cracked, or corroded wiring that causes intermittent faults, sensor failures, and communication dropouts with the ECM. This resolves check engine lights and performance issues at the source.
Simplifies Complex Repairs: Attempting to repair individual wires in a damaged harness is time-consuming and often unreliable. Installing a complete, pre-assembled wiring harness AS (assembly) is a more efficient and permanent solution.
Protects the Engine Control System: A faulty harness can cause short circuits or incorrect signals, potentially damaging sensitive components like the ECM, sensors, or solenoids. An OEM harness safeguards your entire engine management system.

Technical Specifications & Overview

Genuine Part Numbers: 381-2499 / 3812499.
Component Type: Wiring Harness AS (Assembly) – Engine Main Harness.
Function: The primary electrical nervous system of the engine, connecting the ECM to all critical components including crankshaft/camshaft sensors, fuel injectors, temperature/pressure sensors, glow plug relays, and the turbocharger actuator.
Application: An essential electrical component and engine parts for Caterpillar C7 and C7.1 diesel engines across multiple equipment platforms.

Symptoms of a Failing Engine Wiring Harness

Consider replacing your harness with 381-2499 if you experience these electrical issues:

Intermittent or persistent diagnostic trouble codes (DTCs) for various sensors or injectors.
Erratic engine behavior, rough idle, or loss of power related to sensor signals.
Visible damage to wire insulation (cracking, chafing), corroded connectors, or melted sections.
Electrical shorts causing blown fuses related to the engine system.
Communication errors between the ECM and other machine controllers.

Order Your CAT C7/C7.1 Engine Wiring Harness Today

Resolve complex electrical faults with a definitive OEM solution. Our genuine 381-2499 wiring harness for CAT C7 and C7.1 engines is in stock and ready to ship.

Click to order the CAT 381-2499 Wiring Harness. Contact our technical support with your Engine Serial Number for guaranteed compatibility.