Arnott P-3785 Air Suspension Compressor

Arnott Air Suspension Compressor for GX470 and 4Runner

Restore air suspension performance with the Arnott P-3785 air suspension compressor, built for 2003-2009 Lexus GX470 and 2003-2009 Toyota 4Runner applications. This new compressor uses a heavy-duty motor, an epoxy-coated housing for corrosion resistance, and a new dryer to support consistent system operation.

Arnott’s air suspension compressor line focuses on direct OE-style replacement parts for vehicles that rely on factory air suspension performance. The P-3785 is built to original equipment specifications for a precise fit on the Lexus GX470 and Toyota 4Runner platform.

• Fits 2003-2009 Lexus GX470, N/A
• Fits 2003-2009 Toyota 4Runner, N/A
• New air suspension compressor assembly kit
• Heavy-duty motor for dependable compressor operation
• Epoxy-coated finish helps resist corrosion
• New dryer included
• 12V electrical system with female connector
• Maximum pressure rating: 185
• Includes relay
• Direct OE replacement for factory air suspension systems

The Arnott P-3785 air suspension compressor is used to maintain proper air pressure in the suspension system, helping the vehicle raise and level as intended. This part cross-references OE numbers 4891060020 and 4891060021 for the same application. The part number P-3785 is a direct-fit solution for owners searching for a Lexus GX470 air suspension compressor or Toyota 4Runner air suspension compressor replacement.

Common Problems This Part Can Address

• Compressor runs but does not build sufficient air pressure
• Vehicle sits low due to loss of suspension air supply
• Slow or inconsistent ride-height adjustment
• Compressor noise caused by worn internal components
• Moisture-related compressor wear from a failing dryer

Installation Notes and Tips

Verify connector style, voltage, and OE part number before installation. This compressor includes an outer support bracket, intake air hose, and electrical connector for a faster installation process, while mounting hardware is not listed as included. Confirm the air suspension system is free of leaks so the new compressor is not overworked after installation.

Quality Assurance

Arnott manufactures this P-3785 compressor as a new, OE-spec replacement with a corrosion-resistant finish and integrated dryer for dependable service in factory air suspension applications.