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Genuine Original Product Yuchai Natural Gas Parts Yuchai Ignition Coil FN100-3705061 for Yutong Bus

The FN100-3705061 is a high-reliability damped high-voltage ignition lead, designed and specified by Yuchai (YCY) Power for use in its series of CNG/LNG-powered commercial vehicle engines, including the YC6G, YC6J, YC4G, and YC6MK platforms. As a critical link in the engine’s ignition chain, this spark plug wire transmits ultra-high voltage pulses (up to 45kV) from the ignition coil to the spark plug, enabling consistent combustion of lean natural gas mixtures under demanding operating conditions. Engineered with advanced EMI-suppressing resistance and extreme temperature resilience, the FN100-3705061 ensures stable signal transmission while protecting sensitive electronic systems such as the ECU and instrument cluster. In 2026, it remains a standard-fit component across major Chinese bus brands like Yutong, Zhongtong, and Kinglong, particularly in urban transit, shuttle, and sanitation fleets powered by clean-energy CNG/LNG powertrains.
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  • FN100-3705061

  • Yutong Bus Parts

Attribute Description
Product Name Damped High-Voltage Ignition Lead / Spark Plug Wire
Model Number FN100-3705061
Application Type Natural Gas (CNG/LNG) Engine Ignition System
Primary Fitment Yuchai YC6G, YC6J, YC4G, YC6MK Series Engines
Compatible Vehicles Yutong, Zhongtong, Kinglong – City Buses, Shuttle Coaches, Sanitation Trucks
Function Transfers high-voltage pulse from coil to spark plug
Core Technology Integrated Resistance Damping (RFI Suppression)
Insulation Material High-Grade Silicone Rubber (Heat & Weather Resistant)
Connector Type Locking Terminal Boot (Fits standard 8mm or 14mm spark plug terminal)
Compliance Standards GB/T 5766, ISO 9001, ECE R10 (EMC), RoHS
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Parameter Value / Description
Part Number FN100-3705061
Operating Voltage (Peak) Withstands 30 kV – 45 kV transient pulses
Internal Resistance 5 kΩ – 15 kΩ (damped core; suppresses electromagnetic interference - EMI)
Outer Jacket Material High-Temperature Silicone Rubber
Temperature Range -40°C to +250°C (resists thermal cycling and aging)
Terminal Material Corrosion-Resistant Alloy Copper or Stainless Steel
High-Voltage Protection Double-layer insulation with anti-tracking surface design
Length Specification Cylinder-specific length (must match original position — do not interchange randomly)
Bend Radius (Minimum) ≥ 25 mm (avoid sharp bends during routing)
Life Expectancy 20,000 – 40,000 km depending on operating environment
EMI Performance Meets Class 5 standards for automotive electronic compatibility


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