Product Overview

This is a genuine, high-quality Engine Wiring Harness designed for Komatsu heavy machinery. As a leading global supplier of OEM and aftermarket engine components, we provide reliable parts to major industrial markets worldwide, ensuring your equipment maintains peak performance and uptime.

Key Features & Benefits

• OEM Quality: Manufactured to meet or exceed original Komatsu specifications for perfect fit and reliable operation.
• Robust Construction: Features high-grade, heat-resistant wiring and durable connectors to withstand harsh engine bay environments, vibration, and temperature fluctuations.
• Optimal Engine Performance: Ensures stable and accurate signal transmission between engine sensors, actuators, and the ECU, critical for efficient combustion and power output.
• Precision Engineering: Exact replication of OEM routing and connector placement for straightforward installation, reducing downtime.
• Enhanced Durability: Built to resist oil, fuel, and moisture ingress, providing long-term reliability and reducing the risk of electrical faults.

Technical Specifications

OEM Cross-Reference

This genuine wiring harness corresponds directly to the following Komatsu part numbers:

• Komatsu: 82121-E0G40
• Komatsu (Alternate): S82121-E0G40

Compatibility

This engine wiring harness is specifically designed for the following applications:

• Engine Model: Komatsu J05E Diesel Engine
• Machine Models: Komatsu SK200-8 Excavator, Komatsu SK250-8 Excavator

Global Supply & Distribution

We are a trusted international supplier with extensive experience in the automotive and heavy machinery sectors. Our logistics network ensures efficient delivery to key industrial regions globally.

• Worldwide Shipping: We export to North America, Europe, Asia-Pacific, the Middle East, Africa, and South America.
• Fast Delivery: Consolidated shipments to major ports and logistics hubs (e.g., Rotterdam, Los Angeles, Singapore, Dubai) ensure timely delivery to your facility.
• Trade Compliance: All documentation (commercial invoice, packing list, certificate of origin) is prepared professionally to ensure smooth customs clearance.
• B2B Focus: We specialize in serving distributors, workshops, and fleet operators with reliable supply chains and competitive bulk pricing.

Quality Assurance

• Genuine Part: This is not an imitation; it is a genuine Komatsu component.
• Rigorous Testing: Each harness undergoes electrical continuity and insulation resistance tests to verify integrity before dispatch.
• Direct Fit: Guaranteed to match the OEM harness in dimensions, connector types, and wire routing.
• Warranty: Backed by a standard warranty against manufacturing defects. Contact us for specific warranty terms.

FAQ

Q: Is this wiring harness a direct replacement for the original part on my Komatsu excavator?
A: Yes. This is a genuine Komatsu part (82121-E0G40 / S82121-E0G40), engineered as a direct, plug-and-play replacement for the original wiring harness on J05E engines in SK200-8 and SK250-8 models. No modifications are required.

Q: What are the signs that my engine wiring harness needs replacement?
A: Common symptoms include intermittent or persistent engine warning lights, erratic engine performance (misfires, stalling), failure of multiple sensors to communicate, visible damage to wiring (cracks, burns, chafing), or corrosion at connector terminals. A damaged harness can cause complex electrical faults.

Q: Do you provide technical support for installation?
A: While we supply the genuine OEM part, installation should be performed by a qualified technician familiar with heavy machinery. We recommend consulting the official Komatsu service manual for the SK200-8/SK250-8 for the correct procedure, which typically involves disconnecting the battery, carefully unplugging the old harness, and routing the new one identically before reconnection.

Our advantages

1.An authorized wholesaler of Isuzu genuine parts, Hino genuine parts, Mitsubishi genuine parts and Mahle parts.

2. We are not only supply genuine parts, but also high quality OEM parts, which are made in China or made in Japan.

3. More than 10 years of experience in machinery parts, professional supply of diesel engine parts.

4. Fast delivery, the fastest can be shipped in one day ,more than 500,000 of different types parts in stock.

5. Scientific ERP system, easy and fast to locate the parts that customer needs.

6. Professional technician checks the parts before delivery, to make sure the parts are correct, usable and defect-free.

Exhibition

Packing&Shipping

1.  Our shipment is by air/sea/express (DHL/FEDEX/TNT/UPS/EMS).

2.  Once we get confirmation of payment, we will ship products in 2 days.

3.  Our packaging is standard export wooden box or others as your requirement.

4. We’ll check and test the products before shipping , and givethe pictures to our customers to confirm.

FAQ

Q1. What is your company major products?

A: Our main products are Liner kit, Piston, Rings, Liner, Gasket kit, Bearing, Injection pump, Nozzle, Water pump, Oil pump,Crankshaft, Turbocharger,Filter, etc.

Q2.What is the MOQ?

A: Normally we can supply any quantity if we have in stock.

Q3. What is your payment term ?

A: We accept Western Union, T/T, Paypal.

Q4. What is the packing ?

A: Carton or wooden case , If you want to put your logo on the packing , We will do it after get your authorization letter.

Q5. When can you deliver products after payment ?

A: By Express ,usually might take 3-4 days ;By Air , Usually take 7-9 days ; By Sea ,usually take 1-2 months .

Q6. What can you do to complete order perfectly ?

A: In the beginning , We will communicate with clients in details to understand what they need .

Before packing , We will check the products and send photos to clients .After confirmation ,

We will packing products well to avoid damage . Once we get tracking number ,

We will send it to customer and keep contact in with clients .