Bilstein
B4 OE Replacement (Air)

Bilstein 44-257217 Air Suspension Strut - Front Right

Brand Bilstein 44-257217
Position Front Right
Boot Included No
Finish Black paint
Internal Design Monotube
Lower Mount Type Fork
Series B4 oe replacement (air)
Title Bilstein shock absorbers
Upper Mount Type Special
Product line B4 OE Replacement (Air)
Fits Mercedes-Benz · 21 vehicles

OE replacement. Connects directly for modification-free installation.

Monotube design. Delivers consistent damping performance and control.

OE supplier pedigree. Built to meet original air suspension standards.

Cross-references 166 320 14 13, 166 320 52 66 and 166 320 54 66 for the same application. See all 6.

$1,222.49Free shipping
Out of stock
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Air Suspension Struts are typically replaced in pairs, axle by axle.
Order total $1,222.49
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Bilstein B4 OE Replacement Air Strut

The Bilstein B4 OE Replacement (Air) front right air suspension strut restores factory-style ride control for select Mercedes-Benz SUVs. Built for direct connection to the original vehicle connectors, this Bilstein air suspension strut supports modification-free replacement on applications such as the Mercedes-Benz GLE400, GLS550, and ML350.

Key Features

  • Bilstein B4 OE Replacement (Air) series for factory-style suspension restoration
  • Front right air suspension strut for select Mercedes-Benz air suspension applications
  • Monotube internal design for consistent damping response
  • Direct-fit connection to original vehicle connectors
  • Black paint finish
  • Lower mount type: fork
  • Upper mount type: special
  • Boot not included

Product Details

Bilstein B4 OE Replacement (Air) dampers are built to replace original air suspension components on many European vehicles, with OE-level fit and function. As an OE supplier for air suspension systems, Bilstein applies factory-focused engineering to help restore the original driving feel on the front right corner of the vehicle. Part number 44-257217 is a direct replacement choice for Mercedes-Benz models that use air suspension, including the GLE400, GLS550, and ML550. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

  • Front-end ride harshness from a worn air suspension strut
  • Uneven damping response on the front right side
  • Loss of original ride height control behavior
  • Noisy or unstable suspension performance over bumps
  • Factory connector mismatch after replacing a failed OE air strut

Installation Notes and Tips

Verify vehicle fitment by year, model, and position before installation. This part is listed for the front right position on 2012-2019 Mercedes-Benz air suspension applications shown in the fitment data. Confirm the vehicle uses air suspension and compare the original connector and mount style before replacement. Part number 44-257217 is designed for direct connection to the factory system, which supports a cleaner replacement process on compatible Mercedes-Benz GLE and ML platform vehicles.

Quality Assurance

Bilstein supplies OE air suspension systems and builds the B4 OE Replacement (Air) line to meet the standards expected for original-equipment replacement. The monotube construction and OE-style connection design support consistent performance and proper integration with the vehicle’s existing air suspension setup.

This part fits 21 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelPositionNotes
2019Mercedes-BenzGLE4004MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2019Mercedes-BenzGLS5504MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2018Mercedes-BenzGLE5504MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2018Mercedes-BenzGLE550e4MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2018Mercedes-BenzGLS5504MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2017Mercedes-BenzGLE300d4MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2017Mercedes-BenzGLE4004MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2017Mercedes-BenzGLE550e4MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2017Mercedes-BenzGLS5504MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2016Mercedes-BenzGLE300d4MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2016Mercedes-BenzGLE4004MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2016Mercedes-BenzGLE550e4MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2015Mercedes-BenzML250Bluetec 4MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2015Mercedes-BenzML3504MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2015Mercedes-BenzML4004MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2014Mercedes-BenzML350Bluetec 4MaticFront RightB4 OE Replacement (Air)
2014Mercedes-BenzML550BaseFront RightB4 OE Replacement (Air)
2013Mercedes-BenzML350Bluetec 4MaticFront RightWith Air Suspension; B4 OE Replacement (Air)
2013Mercedes-BenzML550BaseFront RightB4 OE Replacement (Air)
2012Mercedes-BenzML350Bluetec 4MaticFront RightB4 OE Replacement (Air)
2012Mercedes-BenzML550BaseFront RightB4 OE Replacement (Air)
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
166 320 14 13166 320 52 66166 320 54 66166 320 54 66 80166 320 56 66166 320 70 13