Air Suspension Pump W166 for Mercedes-Benz

Air suspension compressor for Mercedes W166 ML, GLE and GL, restores Airmatic pressure, ride height and comfort with OEM quality direct fit. #PartsForMercedes

Replacement air suspension compressor for Mercedes-Benz ML, GLE and GL models on the W166 and X166 platforms. Restores correct system pressure for the Airmatic air suspension so the vehicle reaches and maintains the proper ride height, leveling and damping performance. Built to OEM equivalent standards for quiet operation and long service life. Direct fit unit that bolts to the factory bracket and connects to the existing air lines and electrical connector, ideal when the original pump is weak, noisy or has failed completely.

Key Features:

OEM Specification:
Engineered to meet Mercedes-Benz performance and durability requirements for the W166 and X166 Airmatic system, matching original flow and pressure output.

Integrated Dryer:
Compressor features a built in dryer canister that removes moisture from the air supply, helping protect valves and air springs from internal corrosion.

Thermal And Overload Protection:
Designed with thermal safeguards and an integrated pressure relief system that help protect the motor from overheating during extended operation.

Low Noise Operation:
High quality electric motor and precision pump assembly work with factory rubber mounts to keep vibration and cabin noise to a minimum.

Direct Fitment:
Uses original mounting points, air line connections and plug type electrical connector, so no cutting or modification is required during installation.

Service Oriented Design:
Compatible with factory relay and fuse specification, supports system relearn and level calibration after installation with professional diagnostic tools.

Compatibility:

Mercedes-Benz ML-Class (W166):
ML250, ML300, ML320, ML350, ML400, ML500, ML63 AMG

Mercedes-Benz GLE-Class (W166 and C292 Coupe):
GLE250, GLE300, GLE350, GLE400, GLE43, GLE63 AMG

Mercedes-Benz GL and GLS-Class (X166):
Selected GL and GLS models with factory Airmatic air suspension

Typical model years:
ML W166: 2011 to 2015, GLE W166 and C292: 2015 to 2019, GL or GLS X166: 2012 to 2019
(For vehicles equipped with factory air suspension or Airmatic.)

Related Part Numbers:

Mercedes-Benz OEM references:
A1663200104, 1663200104, A1663200204, 1663200204, A166320010480, 166320010480, A1663200404

Common aftermarket or cross reference numbers:
Arnott P-2858, Arnott P-3258, Bilstein 10-255650, AMK A1901 or A1901-1, other references 949-927 and OE A1531.

(Always confirm against the VIN and the part number on the original compressor before purchase.)

Why Choose TOParts:

TOParts supplies OEM quality Mercedes-Benz replacement components that are engineered for precision fitment and dependable performance. Our parts are trusted by workshops across South Africa for consistent quality, reliable availability and helpful after sales support.

Q&A:

Q1: Will this fix a “vehicle rising slowly” or “leveling malfunction” warning?
A1: If the warning is caused by a weak or failed compressor, replacing it normally clears the fault once the system has been checked and reset. Always inspect the air bellows and lines for leaks and confirm that the relay and fuses are within specification.

Q2: Do I need coding after installation?
A2: Most vehicles will self adjust after reconnecting the battery and taking a short drive. A professional suspension calibration or level relearn with diagnostic equipment is recommended for best results.

Q3: Does the compressor come with a new relay or mounting bracket?
A3: This listing is for the compressor pump assembly. Reuse the factory bracket and hardware unless damaged. Many manufacturers specify replacing the relay at the same time to avoid overrun and heat damage to the new compressor.

Q4: How can I extend compressor life?
A4: Repair any leaking air springs or lines as soon as they appear, replace the relay if it shows signs of sticking, and keep the intake filter and dryer components in good condition. An airtight system greatly reduces compressor run time.

Q5: How do I confirm fitment for my Mercedes?
A5: Check your VIN in the Mercedes parts catalog or with your dealer, then match the original compressor part number to the OEM and cross reference numbers listed above for W166 or X166 models with Airmatic suspension.