Allmakes A1991 Air Suspension Compressor

The Allmakes A1991 is an air suspension compressor designed as a direct replacement for failed OEM units in Mercedes-Benz ML-Class (W164) and GL-Class (X164) vehicles equipped with air suspension systems. This compressor restores proper air supply to suspension air bellows and strut air springs, correcting low ride height and harsh ride conditions caused by compressor failure.

Key Features:

• Two-stage dry-running compressor design for improved pressure levels and energy efficiency
• Compact modular construction for reliable performance
• Integrated air dryer unit ensures clean, dry compressed air delivery in all climatic conditions
• Manufactured to OEM specifications for proper fit and function
• Direct replacement for Mercedes-Benz part numbers A1643200004, A1643200204, A1643200304, A1643200504, A1643200904, and A1643201204

Important Installation Note: A new relay (Mercedes-Benz p/n 0025427619) must be installed with this compressor to prevent premature failure of the new unit.

This air suspension compressor is manufactured in Germany and is designed for vehicles equipped with Semi-Active Air Suspension systems. Regular maintenance and timely replacement of suspension compressors ensures optimal air suspension system performance and vehicle ride quality.