Lycoming 72050 Intake Valve Key is a precision engine valve train component designed to secure the intake valve retainer to the valve stem in compatible Lycoming aircraft piston engines. The valve key, also known as a valve keeper or collet, provides a mechanical locking connection that maintains proper valve assembly alignment during engine operation.

The intake valve key transfers retaining force between the valve spring retainer and the valve stem groove, ensuring that the valve spring assembly remains correctly positioned throughout the complete engine cycle. Reliable valve retention is essential for accurate valve timing, proper compression, and dependable engine performance.

Manufactured to Lycoming specifications, the 72050 valve key is produced with precise dimensions and durable materials designed to withstand the repeated impact loads, vibration, and high-temperature conditions present within aircraft piston engines. Accurate fit between the valve key, retainer, and valve stem helps prevent movement and premature wear of the valve train assembly.

The valve key should be inspected during cylinder maintenance and engine overhaul for signs of wear, deformation, cracking, or improper seating. Replacement of damaged valve keys helps maintain valve train integrity and supports continued reliable engine operation.

Key Features

- Part Number: 72050
- Manufacturer: Lycoming Engines
- Component: Intake Valve Key (Valve Keeper / Collet)
- Secures the intake valve retainer to the valve stem
- Maintains proper valve spring assembly alignment
- Precision-manufactured for accurate fit and reliable retention
- Designed to withstand high temperatures, vibration, and cyclic valve loads
- Suitable for compatible Lycoming aircraft engines