Superior Millennium Cylinder SL32006N-A20P Complete Assembly

The Superior Air Parts Millennium® SL32006N-A20P is a complete narrow-deck cylinder power assembly supplied with valves and an 8.5:1 compression piston. It is intended for replacement use in the engine configurations listed in Superior Air Parts’ current eligibility data.

Part number: SL32006N-A20P
Type: Cylinder assembly with valves and 8.5:1 piston
Design: Narrow deck
Superior PMA reference: 173_R3

Manufacturer-listed engine eligibility:

• Lycoming O-320-B1A, B1B, B2A, B2B, B2C, B3A, B3B, B3C, D1A, D1AD, D1B, D1C, D1D, D1F, D2A, D2B, D2C, D2F, D2G, D2H, D2J and D3G
• Lycoming IO-320-B1A

Assembly set includes:

• SL32006N-A2 cylinder assembly with valves
• SL75089A 8.5:1 piston
• SL3601-SC-1 single-cylinder nitride ring set
• SL12032-SC single-cylinder gasket set
• SL360-HDW1-1 cylinder hardware kit
• SL61247 valve cover

OEM reference numbers: 05K21101, 75361, LW12411, 75188, LW12412, 77476 and LW13393.

Installation, operation and maintenance must be performed in accordance with the applicable engine manufacturer documentation and Superior Air Parts service information. Confirm engine model, configuration and approved installation eligibility before purchase and fitment.