Bilstein B4 OE Replacement Air Shock Absorber - External Reservoir

 

Bilstein B4 OE Replacement Air Shock Absorber is designed for customers restoring the ride character of a vehicle equipped with original air suspension. It focuses on returning the suspension system to a controlled, comfortable feel without changing the basic design customers already rely on. Customers get a focused part that supports air-suspension restoration and OE-style ride quality while staying grounded in proven Bilstein damper design.

The external reservoir design and air-shock layout support the function expected from a replacement component in a premium suspension system. Instead of changing the vehicle personality, this damper helps bring back the settled feel, ride height behavior, and comfort balance of the original setup. For customers comparing suspension upgrades, this product is best understood as a way to make the vehicle feel more settled and predictable, not as a decorative add-on.

Air suspension can feel noticeably different when a worn damper no longer controls movement properly. A B4 OE Replacement Air shock helps restore confidence by pairing damping control with the system format built into the vehicle. That practical balance matters for customers who want an upgrade they can feel during normal driving, loaded use, rough-road travel, or track-focused setup work.

The damper uses a monotube internal design with an external reservoir and OE-style connection strategy for selected applications. It is a passive, non-adjustable replacement that focuses on comfort, reliability, and original-function restoration rather than aftermarket ride-height changes. These details help the product work as part of the complete suspension or steering system instead of acting like a generic replacement part.

This product family covers selected premium SUV applications that use factory air-suspension hardware. Customers should confirm suspension type, side, model coverage, and related air-system condition before installation so the replacement works as intended. The best result comes from matching the damper to the vehicle, position, and use case so the finished installation supports the way customers actually drive.

Whether customers are upgrading for ride restoration, air-suspension service, or comfort-focused replacement, the Bilstein B4 OE Replacement Air Shock Absorber delivers OE-style function with Bilstein replacement quality. Now Available at LEER!

 

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Features & Specifications

Product Type: Air shock absorber

Brand: Bilstein

Series: B4 OE Replacement Air

Vehicle Fitment: Mercedes-Benz GL and ML applications with original air suspension; selected coverage varies by trim

Finish: Black straight boot with external reservoir design

Construction: 46mm monotube air shock absorber

Internal Design: Monotube

Reservoir: Yes

Upper Mount Type: Stem

Lower Mount Type: Clevis

Functionality:

• Helps restore original air-suspension damping control
• Supports comfort-focused replacement for worn air shocks
• External reservoir layout matches the selected product design
• Non-adjustable operation keeps the replacement focused on OE-style behavior
• Works with selected original air-suspension systems
• Helps maintain composed ride quality for daily driving and highway travel

 

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Why Choose

This product is ideal for customers who want air-suspension restoration and OE-style ride quality.

• Ideal for customers who want restoration rather than a suspension redesign
• Designed around OE replacement ride quality and comfort expectations
• External reservoir design supports the listed air shock format
• Monotube construction helps manage damping consistency
• A strong service choice for premium SUVs with aging air-suspension components
• Helps customers maintain the vehicle character they already know

 

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What's Included

• One Bilstein B4 OE Replacement Air shock absorber
• Integrated external reservoir assembly
• Product documentation and warranty information when supplied

Note: Confirm included components before installation.

 

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Installation Notes

• Confirm air-suspension type and selected vehicle position before installation
• Inspect air lines, connectors, mounts, and related system components during service
• Follow safe air-suspension depressurization and installation procedures

Buyer is responsible for use in accordance with applicable vehicle, road, off-road, towing, racing, and local laws.

 

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Warranty Information

Bilstein warranty coverage may apply according to the terms supplied with the selected product. Coverage typically excludes improper installation, misuse, modifications, electrical or air-system faults, overloading, tampering, impact damage outside warranty terms, or non-compliant use.

Proof of purchase may be required for warranty claims, and customers should keep installation records and product documentation for future service needs.