A1663202513 Front Left Air Suspension Shock Absorber For Mercedes Benz X166  GL-Class 2011‑2019

A1663202513 Front Left Air Suspension Shock Without ADS for Mercedes Benz X166 GL-Class 2011-

1. Product Introduction

Original OE Number: A1663202513

Product Name: Mercedes‑Benz Front Left Air Shock Absorber, Front Air Suspension Strut Assembly, W166 Air Suspension Strut, Non‑ADS Front Air Damper Assembly

Installation Position: Front axle left side. For Mercedes‑Benz W166 / X166 chassis vehicles equipped with factory Airmatic air suspension without ADS adaptive damping. It is a core load‑bearing, damping and pressure‑retaining vulnerable assembly for front air suspension. It maintains front‑end ride height, filters road bumps and stabilizes vehicle posture, and is a high‑frequency maintenance part for ML / GL / GLE / GLS series.

Product Description

A1663202513 is OEM‑equivalent front‑left air strut assembly for Mercedes‑Benz W166/X166 chassis with non‑ADS standard Airmatic suspension. As a key executive component of Airmatic system, it integrates air spring, hydraulic damper and pressure‑sealing structure. It undertakes load‑bearing, height adjustment, vibration damping and posture balancing functions. It precisely keeps front‑end height, absorbs road vibration, suppresses floating and corner roll, greatly improving high‑speed stability and luxury riding experience.

Air struts of W166/X166 are high‑wear components for premium vehicles. Under long‑term vehicle load, road impact, temperature cycling, chassis moisture erosion and frequent inflation‑deflation cycles, original units tend to suffer rubber airspring cracking, inner sealing membrane rupture & air leakage, oil seal seepage, damping decay and sticking valve. Typical failure symptoms: front‑left end collapse, uneven body height, front‑end sag after parking, air compressor frequent cycling, slow chassis lifting, height calibration failure, air suspension warning lamp on, bouncy ride over pits, floating steering at high speed and poor steering stability. Continued operation with defective struts will accelerate wear of air compressor, valve block and air dryer and trigger cascading failures of the whole air suspension system with high repair cost.

This A1663202513 front‑left air strut is 1:1 reproduced according to Mercedes‑Benz OEM specifications. Overall stroke, pressure‑bearing parameters, damping coefficient, airspring pressure rating, mounting holes, mounting bushing seats and connector interfaces fully match OEM standards. It adopts high‑strength anti‑aging rubber airspring, multi‑layer anti‑leak sealing structure, thickened anti‑rust piston rod and high/low‑temperature resistant hydraulic oil. Upgraded anti‑aging, anti‑cracking and anti‑corrosion processes solve common OEM defects such as air leakage, front‑end sag and damping failure. This is non‑ADS air‑hydraulic version. Direct bolt‑on fit without chassis modification, programming or calibration. Fully compatible with original Airmatic control system. After installation, it effectively fixes front‑end collapse, air leakage, abnormal height adjustment and loose chassis performance, restoring original luxury chassis texture with low rework rate. Excellent for repair shop service, auto parts wholesale and cross‑border export.

Core Advantages ✅ 1:1 OEM replication, identical hole position, stroke, pressure‑bearing & damping parameters and interface dimensions, direct fit with zero compatibility error ✅ Solves W166/X166 air suspension common faults: front‑left sag, air leakage when parked, uneven ride height, air suspension warning, compressor overwork ✅ Upgraded thick multi‑layer high‑pressure airspring, anti‑aging, wide temperature tolerance and crack‑resistant for long‑term pressure retention ✅ Non‑ADS standard air strut, fits mainstream factory air‑suspension trims with high market coverage ✅ Vehicle‑specific for front‑left position, precise parameters and perfect fit, fixes body posture imbalance and high‑speed floating ✅ Complete pre‑assembled unit, no extra accessories required, ready‑to‑install for fast chassis stability & comfort recovery

2. Custom Attributes(E‑commerce Listing)

Brand: Mercedes‑Benz Chassis Code: W166 / X166 Compatible Models: ML‑Class, GL‑Class, GLE‑Class, GLS‑Class Applicable Version: Factory Airmatic air suspension, without ADS adaptive damping system Non‑applicable Version: Vehicles with ADS adaptive damping, mechanical hydraulic suspension, modified air suspension or other chassis platforms Applicable Years: 2011‑2019 W166/X166 corresponding configuration models Installation Position: Front axle, left‑side only Product OE: A1663202513 Product Type: Air Shock Absorber Assembly, Air Suspension Strut, Front Air Spring Strut, Air Suspension Damper Assembly Assembly Feature: Brand‑new complete air strut assembly including air spring, damper cylinder, sealing kit and upper & lower mounting seats Material: High‑strength anti‑aging high‑pressure rubber airspring, precision anti‑rust piston rod, pressure‑resistant alloy cylinder tube, multi‑layer sealing oil seal, long‑life hydraulic damping oil Process Standard: OE parameter reproduction, high‑pressure holding test, reciprocating fatigue test, high‑low temperature aging test, 100% air tightness inspection, damping calibration test Compatibility Note: Only for W166/X166 non‑ADS air‑suspension vehicles. Not compatible with ADS electronically controlled struts or mechanical dampers. Sales Mode: Retail, bulk wholesale, full‑container export orders Inspection Standard: 100% air tightness pressure‑holding test, damping coefficient test, fatigue compression test, full dimension & appearance inspection Packaging: Reinforced neutral hard carton, customized color box & private‑label export packaging available Working Condition: Adapt for city commute, highway long‑distance driving and rough road conditions, matches original Airmatic ECU and pressure‑holding logic Risk Warning: Front‑left dedicated part, cannot be mixed with front‑right strut. Pair inspection & replacement is recommended. Perform ride‑height calibration and air‑leak test after installation. Recommended Matching Parts: Suggest inspect & replace together with air strut repair kit, air compressor, air dryer, height sensor and valve block to eliminate hidden air‑leak risks.

3. Compatible Vehicles

Compatibility Instruction: This dedicated front‑left non‑ADS air strut assembly is for Mercedes‑Benz W166/X166 chassis. Vehicle‑position‑specific. Only fits 2011‑2019 ML / GL / GLE / GLS with factory Airmatic air suspension without ADS adaptive damping. Not compatible with ADS electronic struts or mechanical dampers.

Exact Compatible Model List

1. Mercedes‑Benz ML‑Class W166: ML250, ML300, ML350, ML400, ML500, ML550, ML63 AMG
2. Mercedes‑Benz GL‑Class X166: GL320, GL350, GL450, GL500, GL550, GL63 AMG
3. Mercedes‑Benz GLE‑Class W166: GLE320, GLE350, GLE400, GLE450, GLE500
4. Mercedes‑Benz GLS‑Class X166: GLS320, GLS350, GLS450, GLS500, GLS550

4. Interchangeable OE Numbers

Main OE Number: A1663202513 Interchangeable OE Numbers: A1663201313, A1663204966

Interchange Remark: Above part numbers are iterative interchangeable OEM numbers for W166/X166 front‑left non‑ADS air struts. They share identical structure, airspring pressure rating, damping parameters, mounting holes and ECU compatibility. Direct non‑destructive replacement without modification or programming.

5. FAQ

1. Q1: Which vehicles does A1663202513 fit? A: Fits 2011‑2019 Mercedes‑Benz W166/X166 ML, GL, GLE, GLS with non‑ADS factory air suspension. Not for ADS adaptive damping or mechanical suspension trims.
2. Q2: Is this strut front‑left or front‑right? Can left‑right be interchanged? A: This unit is front‑axle left‑side exclusive. Cannot be mixed with front‑right strut A1663202613. Left‑right have different structure & parameters, must be installed at designated position.
3. Q3: Can it be fitted on vehicles with ADS adaptive damping? A: Not applicable. This is non‑ADS air‑hydraulic version without electronic adaptive damping function. It cannot work with ADS system and will trigger fault codes, damping mismatch and abnormal height adjustment.
4. Q4: Does computer programming need after replacement? A: No programming required. After direct replacement, perform air‑tightness leak test, pipeline air bleeding, ride‑height calibration and fault‑code clearing for normal operation.
5. Q5: What symptoms indicate air strut replacement? A: Front‑left end collapse, front‑end sag after cold parking, uneven body height, frequent air‑compressor cycling, slow chassis lifting, air‑suspension warning lamp on, bouncy performance over pits and floating steering at high speed. These indicate strut air‑leakage failure and replacement is recommended.
6. Q6: Replace single strut or in pairs? A: Inspect condition of both front struts. Pair‑replacement is preferred. Mismatched damping and pressure‑retention performance between left and right will cause body tilt, steering offset and unstable handling.

6. Custom Service

1. OEM Private Label Customization: Support custom logo printing, neutral no‑label export packaging and customized color boxes, suitable for Amazon, eBay, AliExpress,  and other cross‑border platforms.
2. Bulk Supply Service: A1663202513 Mercedes‑Benz front‑left air strut is in constant stock. Support retail, bulk wholesale and full‑container export orders with stable supply, fast delivery and competitive price.
3. Complete Air‑Suspension Parts Supply: One‑stop supply of full air‑suspension components for W166/X166, including front & rear air struts, air compressor, air dryer, valve block, height sensor and repair kits.
4. E‑commerce Material Support: Provide real‑product photos, close‑up pictures, OE cross‑reference table, compatible vehicle list and installation reference documents for store listing, short‑video marketing and detail‑page editing.