Lycoming Vacuum Pump Block-Off Plate & Gasket

Replace or eliminate an unused engine-driven vacuum pump with this Lycoming Vacuum Pump Block-Off Plate and Gasket Kit. Designed for the accessory-case vacuum pump mounting location on a wide range of Lycoming engines, this kit provides a clean, secure way to seal the opening when a vacuum pump is not being used.

Ideal for airboat and experimental applications where the original vacuum system has been removed or is no longer required.

Features

• Complete kit – Includes vacuum pump block-off plate and matching gasket
• Durable metal plate – Designed to securely cover the unused vacuum pump mounting opening
• Proper sealing – Included gasket helps provide a reliable seal between the plate and accessory case
• Clean installation – Eliminates the need to leave an unused vacuum pump installed
• Broad Lycoming compatibility – Fits numerous 4-, 6-, and 8-cylinder Lycoming engine families
• Excellent replacement for engines converted to configurations that do not require an engine-driven vacuum pump
• Mounting hardware not included

Engine Compatibility

Compatible with applicable configurations within the following Lycoming engine families:

4-Cylinder / Related Engines:
AEIO-320, AEIO-360, AEIO-390, AIO-320, AIO-360, IO-320, IO-360, IO-390, IVO-360, LIO-320, LIO-360, LO-360, LTO-360, O-235, O-290, O-320, O-340, O-360, TIO-360, TO-360 and VO-360.

6-Cylinder / Related Engines:
AEIO-540, AEIO-580, GO-435, GO-480, GSO-480, IGO-540, IGSO-480, IGSO-540, IO-540, IO-580, IVO-540, LTIO-540, O-435, O-540, TIGO-541, TIO-540, TIO-541, TIVO-540, TVO-435, TVO-540, VO-435 and VO-540.

8-Cylinder:
IO-720.

Common Airboat Applications

This block-off plate is especially useful on Lycoming-powered airboats running engines such as the O-320, O-360, IO-360, O-540 and IO-540 where the engine-driven vacuum pump and associated aircraft vacuum equipment are not required.

Package Includes

• 1 × Lycoming-style vacuum pump block-off plate
• 1 × Vacuum pump mounting gasket

Important Fitment Note: Lycoming produced numerous engine configurations and accessory-case arrangements. Verify your exact engine model, suffix, accessory case, bolt spacing, and existing vacuum pump mounting location before ordering. Fitment should be determined by the specific engine configuration rather than engine family alone.