Lycoming Cylinder Oil Drain Tube Fitting 45° Elbow

The MS20823-6D 45° Elbow is a precision-machined fitting designed for Lycoming aircraft engine cylinder oil drain tube assemblies. Featuring a 45-degree configuration, this fitting provides the proper routing of oil drain hoses and tubing while maintaining unrestricted oil flow and a secure, leak-resistant connection.

Manufactured to military specification (MS20823-6D), this elbow is built from corrosion-resistant material to withstand the high temperatures, vibration, and harsh operating environments found in aircraft engines. It is an ideal replacement during routine maintenance, engine repair, or overhaul.

Drawing #10

Features

• Genuine MS20823-6D 45° elbow fitting
• Designed for Lycoming oil drain tube assemblies
• Provides proper hose routing and oil flow
• Precision-machined for a secure, leak-resistant seal
• Corrosion-resistant construction for long service life
• Suitable for maintenance, repair, and overhaul

Specifications

• Part Number: MS20823-6D
• Description: 45° Elbow Fitting
• Configuration: 45 Degree
• Material: Corrosion-resistant metal
• Condition: New

Common Applications

Used in cylinder oil drain tube assemblies on many Lycoming 4-cylinder and 6-cylinder engines, including selected models of:

• O-320
• IO-320
• O-360
• IO-360
• O-540
• IO-540
• AEIO-540
• TIO-540
• HIO-540