Built to meet rigorous aviation standards, the ES4371 incorporates premium internal components and precision manufacturing to ensure consistent spark generation throughout the engine operating range. The integrated impulse coupling retards ignition timing during engine start, producing a hotter spark at low cranking speeds for easier, more reliable starting while automatically disengaging during normal engine operation. The magneto's robust construction provides excellent resistance to vibration, heat, and demanding operating environments, making it suitable for both routine maintenance and engine overhauls.

Designed as a direct-fit replacement, the ES4371 is compatible with a wide range of Lycoming engine models and can replace several legacy part numbers without requiring airframe modifications, provided compatibility is verified with the applicable engine and aircraft documentation. Its FAA-PMA approval ensures compliance with aviation safety and performance requirements while offering an economical alternative to OEM ignition systems.

Key Features

Factory-new FAA-PMA approved aircraft magneto
Left-hand (LH) rotation configuration
20° impulse coupling for improved engine starting
Direct replacement for Slick/Champion 4371-series magnetos
Precision-engineered for consistent ignition performance
Durable construction for long service life
Compatible with numerous Lycoming four-cylinder engines
Ideal for maintenance, overhaul, and replacement applications

Specifications

Part Number: ES4371
Type: Aircraft Magneto
Rotation: Left-Hand (LH)
Impulse Coupling: 20° Lag
Engine Compatibility: Selected Lycoming four-cylinder engines
Approval: FAA-PMA