Lycoming Cylinder #2 Oil Drain Tube Assembly | Fits Select IO-540, O-540, AEIO-540 & TIO-540 Engines

The 71737 Oil Drain Tube Assembly is a precision-formed replacement tube designed for Cylinder #2 on select Lycoming 6-cylinder aircraft engines equipped with external cylinder oil drain systems. Engineered to provide efficient oil return from the cylinder head to the crankcase, this tube helps maintain proper engine lubrication while reducing the risk of leaks caused by worn, damaged, or corroded oil drain tubes.

Manufactured from corrosion-resistant steel and formed to OEM specifications, the 71737 is built to withstand the heat, vibration, and demanding operating conditions found in aircraft engines. It is an ideal replacement during routine maintenance, engine repair, or overhaul.

Features

• Direct replacement for Cylinder #2 oil drain tube assembly
• Precision-formed for OEM fit and proper routing
• Corrosion-resistant steel construction
• Promotes efficient oil return to the crankcase
• Leak-resistant design for dependable performance
• Ideal for maintenance, repair, and overhaul

Specifications

• Part Number: 71737
• Description: Cylinder #2 Oil Drain Tube Assembly
• Cylinder Location: #2
• Material: Corrosion-resistant steel
• Condition: New

Common Applications

Fits selected Lycoming 6-cylinder engines equipped with external cylinder oil drain tube assemblies, including:

• AEIO-540: -D4A5, -D4B5, -D4C5, -D4D5
• IO-540: -C1B5, -C4B5, -C4C5, -C4D5D, -D4A5, -G1A, and additional models
• LTIO-540: -F2BD, -J2B, -J2BD, -K1AD
• O-540: -A1A, -A1A5, -A1B5, -A1C5, -A1D, -A1D5, and additional models
• TIO-540: -C1A, -E1A, -G1A, -H1A, -AA1AD, -AB1AD, and additional models