Lycoming 73383 Alternator Bracket Lockplate is a genuine replacement locking component designed to secure alternator bracket hardware on compatible Lycoming aircraft engines. This safety-critical hardware helps prevent fastener loosening caused by engine vibration, thermal cycling, and continuous operational loads.

The lockplate provides mechanical retention of the alternator bracket attachment hardware after proper installation and torque procedures have been completed. Maintaining secure alternator bracket mounting is essential for proper alignment of the alternator drive system, reliable charging system operation, and protection of associated engine accessories.

Manufactured to Lycoming specifications, the 73383 lockplate is designed for accurate fitment and dependable locking performance in the demanding environment of aircraft piston engines. Its durable construction allows it to withstand vibration, temperature changes, and repeated engine operating cycles.

The alternator bracket lockplate should be replaced whenever it has been removed, bent, damaged, or during applicable maintenance procedures requiring access to the alternator mounting assembly. Installation of a new locking component helps maintain proper fastener security and supports continued engine reliability.

Key Features

- Part Number: 73383
- Manufacturer: Lycoming Engines
- Component: Alternator Bracket Lockplate
- Secures alternator bracket attachment hardware
- Helps prevent fastener loosening caused by engine vibration
- Precision-manufactured for proper fit and reliable retention
- Designed for aircraft piston engine operating conditions
- Suitable for compatible Lycoming aircraft engines