A2213204913 Front Air Suspension Shock Strut for Mercedes-Benz W221 S320 S350 S450  S500 S63AMG S65AMG (2006-2012)

A2213204913 Front Air Suspension Shock Strut for Mercedes-Benz W221 S320 S350 S450 S500 S63AMG S65AMG (2006-2012)

1. Product Introduction

Original OE Number: A2213204913

Product Name: Mercedes-Benz W221 Front Air Shock Absorber, S-Class Front Airmatic Air Suspension Strut Assembly, Front Air Strut with ADS Electronic Adaptive Damping

Installation Position: Front axle, universal for left and right side. Fits Mercedes-Benz W221 chassis S-Class vehicles equipped with factory Airmatic air suspension, with ADS adaptive damping and without 4MATIC all-wheel drive. It is a core wearing service part for front load bearing, automatic ride height adjustment, road vibration filtering, high-speed posture stabilization and chassis comfort.

Product Description

OE A2213204913 is factory-specified front Airmatic air strut assembly with ADS for Mercedes W221 S-Class chassis. Universal for left and right front without side distinction. Designed for 2WD air suspension models equipped with ADS adaptive damping. The assembly integrates high-pressure burst-proof multi-layer air spring, precision hydraulic damper cylinder and built-in ADS solenoid valve plus full high-pressure sealing structure. The ADS solenoid receives signals from vehicle ECU and adjusts damping stiffness dynamically according to road conditions. It balances comfortable ride on urban pavement and strong support during high-speed cornering. It is a mainstream replacement service part for high-end W221 S-Class air suspension.

Mercedes W221 S-Class is the second-generation flagship sedan with air suspension, and front air strut is a high-failure wearing component. Heavy front load, continuous road impact, aging from alternating high and low temperature, sediment & moisture corrosion on chassis, repeated inflation and deflation cycles will cause aging, hardening, cracking, bulging and slow air leakage of original air spring rubber. Internal hydraulic oil degradation and oil seal failure also lead to weak damping. The ADS solenoid valve may also suffer carbon jam and signal drift. Common failure symptoms: front end sag, nose sinks overnight, obvious left-right height difference at front, front lower than rear, frequent air compressor activation, slow or stuck height adjustment, height calibration failure, air suspension / ADS warning light on dashboard, bouncy front end over speed bumps, floating nose at high speed, loose steering noise and ADS function failure. Continuous driving with defective struts will wear air compressor, valve block, air dryer and height sensor continuously, trigger cascading faults of whole air suspension system and raise overall maintenance cost greatly.

This A2213204913 front air strut is 1:1 reproduced strictly according to Mercedes OEM data. Stroke dimension, pressure rating, damping coefficient, air spring burst pressure, ADS electronic parameters, mounting holes, bushing and interface size fully match OEM standards. It adopts thickened multi-layer imported anti-aging high-pressure rubber airspring, double anti-leak sealing structure, anti-rust precision piston rod, wide-temperature long-life anti-degradation hydraulic oil and high-sensitivity OEM-grade ADS solenoid valve. Upgraded anti-aging, anti-cracking, anti-corrosion, anti-fatigue and burst-resistant performance fundamentally solves OEM inherent defects such as air leakage, front sag, weak damping, ADS electronic fault codes, abnormal height adjustment and loose chassis. This version is dedicated for W221 front axle 2WD models with ADS, universal left & right. Direct bolt-on installation without chassis modification. Air tightness inspection, ride height calibration and ADS matching calibration are required after installation, fully compatible with original Airmatic ECU and ADS control system. It completely repairs front sag, slow air leakage, unbalanced body posture, ADS failure, loose chassis, high-speed floating and air suspension warning. Restores the solid, comfortable and premium original chassis texture of Mercedes S-Class. Low rework rate and high stability, suitable for repair shop maintenance, bulk auto parts stocking and cross-border export business.

Core Advantages ✅ 1:1 OEM precise reproduction with integrated ADS solenoid valve, universal for front left & right, zero deviation on mounting hole, stroke, damping and electronic parameters, bolt-on fit ✅ Solves common W221 air suspension faults: front nose sag, overnight sinking, tilted body posture, frequent air suspension & ADS warning, compressor overwear and ADS damping failure ✅ Upgraded thickened multi-layer burst-proof airspring, wide temperature resistance, anti-aging & crack-resistant, long-time pressure holding to eliminate slow leakage ✅ Built-in OEM-grade ADS solenoid valve, dynamically adjusts damping stiffness in real time, fully retains original adaptive chassis function ✅ Specially for 2WD vehicles with ADS, not compatible with 4MATIC versions, perfectly matches original chassis electronic tuning ✅ Brand-new full assembly delivery, complete accessories without extra parts required, recover original ride comfort and ADS function quickly after calibration

2. Custom Attributes for E-commerce Listing

Brand: Mercedes‑Benz Chassis Code: W221 Compatible Models: Mercedes‑Benz S-Class luxury flagship sedan Applicable Version: Factory Airmatic air suspension, with ADS adaptive damping, without 4MATIC (2WD) Non‑applicable Version: Vehicles without ADS, 4MATIC all-wheel drive, ABC active body control, mechanical coil spring, W220/W222 and other chassis Applicable Years: 2005‑2013 (Full W221 production period) Installation Position: Front axle, universal for left & right (No side distinction) Product OE: A2213204913 Product Type: Front Airmatic Air Strut Assembly with ADS, Front Air Suspension Shock, Air Strut with ADS Electronic Adaptive Damping Assembly Feature: Brand-new complete assembly including burst-proof airspring, damper cylinder, ADS solenoid valve, full sealing kit, upper & lower mounting bushings Material: High-strength multi-layer anti-aging high-pressure rubber airspring, anti-rust precision piston rod, pressure-resistant alloy cylinder tube, multi-layer composite oil seal, long-life anti-degradation hydraulic damping oil, high-sensitivity ADS solenoid assembly Process Standard: OE-spec reproduction, high-pressure holding test, reciprocating fatigue compression test, high-low temperature aging test, 100% air-tightness inspection, damping calibration, ADS solenoid signal test Compatibility Note: Only fits Mercedes W221 2WD vehicles with ADS, no ABC. Not compatible with non-ADS, 4MATIC, ABC or other chassis. Universal for front left and right. Sales Mode: Retail, bulk wholesale, full-container export orders Inspection Standard: 100% air-tightness pressure holding test, damping coefficient calibration, fatigue compression test, high-low temperature pressure test, ADS signal inspection, full dimension & appearance check Packaging: Reinforced neutral carton; customized color box, neutral export package and private-label OEM available Working Condition: City commute, highway driving, full-load travel and complex road; fully compatible with original Airmatic ECU and ADS logic Risk Warning: Only for W221 2WD ADS-equipped vehicles. Non-ADS / 4MATIC / ABC vehicles cannot be fitted. Air leak test, ride height calibration and ADS matching calibration must be completed after installation. Recommended Matching Parts: Inspect and replace together with air strut repair kit, air compressor, air dryer, valve block and height sensor to eliminate hidden faults of air suspension system.

3. Compatible Vehicles

Compatibility Instruction: OE A2213204913 is dedicated front air strut with ADS for W221 chassis S-Class, universal for left and right front. Only fits 2005‑2013 Mercedes‑Benz S-Class with factory Airmatic air suspension, 2WD, with ADS adaptive damping and no ABC active body control. Not compatible with non-ADS air suspension, 4MATIC, ABC, mechanical spring suspension or other chassis.

Exact Compatible Model List

1. Mercedes‑Benz S-Class W221 (2005‑2013): S350, S400, S550, S600, S63 AMG, S65 AMG, factory Airmatic 2WD ADS version

4. Interchangeable OE Numbers

Main OE Numbers: A2213204913 Interchangeable OE Numbers: A2213209313, A2213200038, A2213205113

Interchange Remark: The above OE numbers are iterative OEM interchange references for W221 front air struts with ADS. They share identical structure dimension, airspring pressure rating, damping parameters, ADS solenoid specification, mounting holes and Airmatic compatibility. Universal for front left and right, direct non-destructive replacement without chassis modification.

5. FAQ

1. Q1: Which vehicles fit OE A2213204913? A: Fits Mercedes‑Benz W221 S-Class 2005‑2013 S350/S400/S550/S600/S63 AMG/S65 AMG with factory Airmatic air suspension, 2WD, with ADS and no ABC. Not applicable for non-ADS, 4MATIC, ABC, mechanical springs or other chassis.
2. Q2: Does this front strut have left / right distinction? Can left and right swap? A: This part is fully universal for front left and right. The structure, dimensions, damping and ADS electronic parameters are identical, can be installed on either front side directly, convenient for stocking and installation.
3. Q3: Can it be installed on non-ADS or 4MATIC vehicles? A: Not available. This strut has built-in ADS solenoid valve for ADS 2WD models. Non-ADS vehicles lack matching wiring harness. 4MATIC has different chassis structure. Improper installation will cause abnormal ride height and ADS fault codes.
4. Q4: Does computer coding need after replacement? A: No coding required, but air-tightness inspection, ride height calibration and ADS solenoid matching calibration must be performed, clear fault codes before operation to restore original ADS adaptive damping function.
5. Q5: What symptoms indicate replacement of this front air strut? A: Front nose sag, vehicle nose sinks overnight, obvious left-right front height difference, frequent compressor operation, slow stuck height adjustment, air suspension & ADS warning lamp on, failure of ADS chassis mode, bouncy front end over pits, floating nose at high speed and loose steering noise. These symptoms indicate airspring leakage or ADS solenoid failure, replacement is recommended.
6. Q6: Is paired replacement required for front struts? A: Pair inspection & replacement (left + right front) is strongly recommended. Old and new struts differ in pressure retention, damping rebound force and ADS solenoid response speed. Single-side replacement may cause unbalanced front posture and asymmetric bump performance, affecting comfort and high-speed stability.
7. Q7: Are interchange OE numbers mutually replaceable? A: Yes. A2213204913 and its alternative OEs have identical dimension, structure, damping and ADS electronic parameters. They are OEM upgraded replacement parts for direct bolt-on installation.

6. Custom Service

1. OEM Private Label Customization: Support logo silk printing, neutral no-label export package and customized color box, suitable for Amazon, eBay and other cross-border platforms.
2. Bulk Supply Service: A2213204913 in stock. Support retail, large-volume wholesale and full-container export with stable supply and fast lead time.
3. Complete Air-Suspension Parts Supply: One-stop supply for full W221 air-suspension components: front & rear air struts, air compressor, air dryer, valve block, height sensor, repair kits and more.
4. E-commerce Material Support: Provide real-product photos, close-up pictures, OE cross-reference table, compatible vehicle list and installation calibration reference documents for store listing and short-video marketing.