Lycoming 01K28983 Connecting Rod Upper Bushing is a precision-engineered internal engine component designed for use in compatible Lycoming aircraft piston engines. The upper connecting rod bushing provides a low-friction bearing surface between the connecting rod and piston pin, allowing smooth articulation of the piston assembly during engine operation.

The connecting rod upper bushing is a critical component of the reciprocating engine assembly, maintaining proper alignment and clearance between the piston pin and connecting rod. Correct bushing fit allows effective load distribution, reduces friction, and supports reliable piston movement throughout the intake, compression, power, and exhaust cycles.

Manufactured to Lycoming specifications, the 01K28983 bushing is designed to withstand continuous mechanical loading, vibration, lubrication conditions, and the cyclic forces generated inside aircraft piston engines. Precision dimensions help maintain proper piston pin fit and support long-term engine reliability.

The connecting rod upper bushing should be inspected during engine overhaul or connecting rod servicing procedures for wear, scoring, excessive clearance, or damage. Replacement of worn bushings helps restore correct operating clearances and supports proper engine performance and continued airworthiness.

Key Features

- Part Number: 01K28983
- Manufacturer: Lycoming Engines
- Component: Connecting Rod Upper Bushing
- Provides a bearing surface between the connecting rod and piston pin
- Supports proper piston alignment and smooth reciprocating movement
- Helps maintain correct engine operating clearances
- Designed for high-load aircraft piston engine applications
- Precision-manufactured for reliable fit and service performance
- Suitable for compatible Lycoming aircraft engines