Lycoming 17A23937 Exhaust Valve is a precision-engineered engine valve component designed for use in compatible Lycoming aircraft piston engines. The exhaust valve controls the release of combustion gases from the cylinder during the exhaust cycle, supporting efficient engine operation and proper combustion chamber performance.

Operating in one of the most demanding areas of the engine, the exhaust valve is exposed to high temperatures, combustion pressure, and repeated mechanical cycling. Proper valve sealing and movement are essential for maintaining cylinder compression, effective exhaust flow, and reliable power output throughout the engine operating range.

The 17A23937 exhaust valve is an alternative replacement for LW-13622 and is manufactured to Lycoming specifications for dependable aircraft engine service. Its design provides the durability required to withstand thermal stress, vibration, and continuous valve train loading.

The exhaust valve should be inspected during cylinder maintenance and engine overhaul procedures for signs of erosion, burning, cracking, distortion, or improper valve seating. Replacing worn valve components helps restore proper cylinder performance and supports continued engine reliability and airworthiness.

Key Features

- Part Number: 17A23937
- Manufacturer: Lycoming Engines
- Component: Exhaust Valve
- Alternative To: LW-13622
- Controls exhaust gas flow from the combustion chamber
- Supports proper cylinder sealing and compression
- Designed for high-temperature and high-cycle engine operation
- Precision-manufactured for reliable valve train performance
- Suitable for compatible Lycoming aircraft engines