English 
20Y-06-21114 External Wiring Harness for PC200-6 PC210-6 6D95 Engine
Part number 20Y-06-21114 is the External Wiring Harness used on Komatsu PC200-6, PC210-6 excavators. This aftermarket replacement from TOPARTS is designed to fit in place of the original without cutting, splicing or rerouting.
It is used with the 6D95 engine and is matched to that engine's sensor and connector layout.
Part Information
- Part Name: External Wiring Harness
- Part Number: 20Y-06-21114, 20Y0621114
- Engine: 6D95
- Condition: Aftermarket new
- Product Weight: 13 kg / 28.66 lbs
- Brand: TOPARTS
- Feature: Strict quality control standards; stable performance and high reliability
Applicable Models
Komatsu PC200-6, PC210-6
Function Overview
Mounted directly on the engine, this harness bundles the circuits that connect the electronic control unit with the parts doing the real work: sensors that measure, and actuators that respond. Clean, uninterrupted signals here are what allow the engine to run smoothly and efficiently.
The External Wiring Harness is the nerve center of the engine bay. It links the engine control module to the sensors, injectors and actuators that keep combustion on target, carrying every signal the ECM needs to read speed, temperature and pressure and respond in milliseconds.
Komatsu machines use monitor-based diagnostics, and a harness fault frequently appears as an error code that clears and returns. Replacing worn wiring is a common fix for these recurring codes.
Frequently Asked Questions
How long does shipping take?
Orders are shipped by express courier such as DHL, FedEx, UPS or TNT, and you will receive a tracking number by email as soon as your parcel leaves our warehouse.
How do I know it will fit my machine?
Match the part number on your old harness, or send us your machine model and serial number and we will confirm before you order.
Is this a genuine or aftermarket part?
Please see the Condition line in the specifications above. Every part is checked for fit and continuity before shipping.
Replace or Repair?
Harness repairs are hard to do well in the field. Moisture gets into joints, tape loosens with heat, and intermittent faults come back. Replacing the harness gives you factory-style connections throughout and makes future troubleshooting far simpler.
Signs Your Harness Needs Replacing
Typical signs include:
- Engine cranks but will not start, or starts only after several attempts
- Engine stalling, misfiring or running roughly at idle
- Fault codes for sensors, injectors or the ECM appearing on the monitor
- Visible heat damage, cracked insulation or chafed wires near the engine block
Intermittent faults like these are classic signs of ageing wiring, and they rarely improve on their own.
Construction and Quality
Each harness is produced under strict quality control, with wire gauges, colours and connector types matched to the original specification. Terminals are crimped for secure contact, and the bundle is protected with sleeving where the original used it.
Before and During Installation
- Label each connector on the old harness with masking tape before you unplug anything.
- Clean and inspect the ECM connector pins; bent pins cause more faults than people expect.
- Keep the new harness clear of the exhaust manifold and turbocharger, and refit all heat shields.
- Clear stored fault codes after installation and run the engine to working temperature to confirm everything reads correctly.
Payment & Shipping
- Payment Method: PayPal, Stripe, Credit card, Visa, etc.
- Shipping Method: DHL, FedEx, UPS, TNT, USPS EMS, etc.
- Track Your Order: An email containing the tracking number with a link will be sent to you as soon as it ships.
Note: Please verify your part number and match our product pictures to your original item before ordering. If you have any questions, please feel free to contact us. Thanks.
