Does the BILSTEIN B4 Air Suspension Strut fit both front corners?

No. This B4 Air Suspension Strut is the front right strut only and is sold individually. The front left strut is a separate BILSTEIN part number, so an owner replacing both front corners needs one of each. Many owners replace both front struts together so the two sides age and ride alike.

Will the strut plug into the factory air suspension?

Yes. BILSTEIN designs the B4 strut to connect directly to the original air and electrical connectors of the vehicle, so it installs without modification and the factory air suspension controller manages it the same way it managed the original strut.

Which vehicles does the strut fit?

BILSTEIN lists the W166 ML250, ML350, ML400 and ML550 from 2012 to 2015, the W166 GLE300d, GLE400, GLE550 and GLE550e from 2016 to 2019 and the X166 GLS550 from 2017 to 2019, all with air suspension. Check the exact model year against the Applications list before ordering.

What are the signs of a failing front air strut?

Common signs are one corner sitting low after the vehicle has been parked, the air compressor running for long periods, a suspension warning on the dash, and a harsh or bouncy ride over bumps. A leak at the air spring is the usual cause, and the strut is replaced as an assembly.

How is the BILSTEIN strut different from the original?

BILSTEIN supplies air suspension systems to carmakers as original equipment, and the B4 range is built to that standard to restore the original ride and handling. The strut is made in Germany and BILSTEIN backs it with a Limited Lifetime Warranty, handled for the owner by Bulletproof Automotive.

Description

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BP PRICING DIFFERENCE

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Description

BILSTEIN B4 Air Suspension Strut for W166 Mercedes-Benz ML / GLE and X166 GLS, Front Right

BILSTEIN’s B4 Air Suspension Strut for W166 Mercedes-Benz ML / GLE and X166 GLS replaces the front right air strut on vehicles fitted with the factory air suspension, from the 2012 ML350 to the 2019 GLS550. BILSTEIN supplies air suspension to carmakers as original equipment, and the B4 strut is built to connect to the original fittings and wiring without modification. A failing air strut announces itself with a corner that sags overnight or a compressor that never stops working, and the B4 restores the ride height and the composed, quiet ride these vehicles were sold on.

Design and Performance

The B4 strut combines the air spring and the damper in one assembly, as the original does, with a fork-type lower mount and the vehicle-specific upper mount. It runs a monotube damper inside the air spring and connects directly to the original connectors, so the factory air suspension controller manages it exactly as before.

Features

Direct OE replacement for the front right air suspension strut
Connects to the original air and electrical connectors with no modification
Air spring and monotube damper combined in one assembly
Fork-type lower mount and vehicle-specific upper mount, finished in black paint
Made in Germany and covered by the BILSTEIN Limited Lifetime Warranty

Specifications

Position: Front right
Collapsed length: 29.02in
Extended length: 33.69in
Lower mount: Fork
Upper mount: Vehicle-specific
Damper design: Monotube
Dust boot included: No
Country of origin: Germany
Warranty: BILSTEIN Limited Lifetime Warranty

Applications

Mercedes-Benz GLE300d: W166 (4Matic) | 2016-2017
Mercedes-Benz GLE400: W166 (4Matic) | 2016-2017 and 2019
Mercedes-Benz GLE550: W166 (4Matic) | 2018
Mercedes-Benz GLE550e: W166 (4Matic) | 2016-2018
Mercedes-Benz GLS550: X166 (4Matic) | 2017-2019
Mercedes-Benz ML250: W166 (Bluetec 4Matic) | 2015
Mercedes-Benz ML350: W166 (4Matic and Bluetec 4Matic) | 2012-2015
Mercedes-Benz ML400: W166 (4Matic) | 2015
Mercedes-Benz ML550: W166 | 2012-2014

Notes

Sold individually: this B4 Air Suspension Strut fits the front right corner only
For vehicles equipped with the factory air suspension
The front left strut is sold separately as the B4 Air Suspension Strut for the front left corner
Have the ride height checked and a wheel alignment carried out after installation

Frequently Asked Questions

Does the BILSTEIN B4 Air Suspension Strut fit both front corners? No. This B4 Air Suspension Strut is the front right strut only and is sold individually. The front left strut is a separate BILSTEIN part number, so an owner replacing both front corners needs one of each. Many owners replace both front struts together so the two sides age and ride alike.
Will the strut plug into the factory air suspension? Yes. BILSTEIN designs the B4 strut to connect directly to the original air and electrical connectors of the vehicle, so it installs without modification and the factory air suspension controller manages it the same way it managed the original strut.
Which vehicles does the strut fit? BILSTEIN lists the W166 ML250, ML350, ML400 and ML550 from 2012 to 2015, the W166 GLE300d, GLE400, GLE550 and GLE550e from 2016 to 2019 and the X166 GLS550 from 2017 to 2019, all with air suspension. Check the exact model year against the Applications list before ordering.
What are the signs of a failing front air strut? Common signs are one corner sitting low after the vehicle has been parked, the air compressor running for long periods, a suspension warning on the dash, and a harsh or bouncy ride over bumps. A leak at the air spring is the usual cause, and the strut is replaced as an assembly.
How is the BILSTEIN strut different from the original? BILSTEIN supplies air suspension systems to carmakers as original equipment, and the B4 range is built to that standard to restore the original ride and handling. The strut is made in Germany and BILSTEIN backs it with a Limited Lifetime Warranty, handled for the owner by Bulletproof Automotive.

About BILSTEIN

BILSTEIN was founded in 1873 by August Bilstein in Altenvoerde, now Ennepetal, Germany, where its engineers are still based. In 1957 it fitted the first monotube gas pressure shock absorber to a Mercedes-Benz series production car, and Audi, BMW, Porsche and Volkswagen are among the carmakers that have used its dampers as original equipment since. BILSTEIN develops its suspension on its own test circuit in Papenburg and on the Nürburgring Nordschleife, and it has been part of thyssenkrupp since 2005.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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BILSTEIN B4 Air Suspension Strut for W166 Mercedes-Benz ML / GLE and X166 GLS, Front Right [44-283162]

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BILSTEIN B4 Air Suspension Strut for W166 Mercedes-Benz ML / GLE and X166 GLS, Front Right

Design and Performance

Features

Specifications

Applications

Notes

Frequently Asked Questions

About BILSTEIN

Reviews