A2233209803 & A2233200404 Rear Right Air Suspension Shock Strut for Mercedes Benz S-Class W223

Original OE Number: A2233209803, A2233200404 (OEM iterative interchangeable part numbers, fully compatible)

Product Name: Mercedes-Benz W223 S-Class Rear Right Air Shock Absorber Assembly with ADS Adaptive Electronic Control

Mounting Position: Rear axle right side (Exclusive for rear right, not interchangeable for rear left; compatible with both 2MATIC RWD and 4MATIC AWD, for Airmatic air suspension with ADS)

A2233209803 (A2233200404) is the OEM high-spec rear-right dedicated ADS electronic air shock absorber assembly for Mercedes flagship new W223 S-Class. It is the factory matched counterpart of rear left A2233209703. This assembly fits high-end W223 models both RWD and AWD equipped with factory Airmatic air suspension and ADS adaptive damping system. It is a core high-frequency wearable maintenance part for luxury flagship sedans. This is an integrated complete assembly including explosion-proof high-pressure air spring, heavy-load hydraulic damper cylinder for rear axle and OEM-style ADS adaptive solenoid valve. All accessories are included for direct bolt-on replacement without extra parts.

Mercedes W223 S-Class has heavy curb weight and high load on rear axle. Under daily full-load commuting, long highway trips, bumpy roads and aging caused by seasonal temperature change, common rear air suspension failures may occur: rubber aging, hardening and cracking of rear right air spring leading to slow air leakage, rear right sag, uneven body height and overnight rear collapse; deterioration of internal hydraulic oil and aging of high-pressure sealing oil seal cause damping weakness, loose rear bouncing, chassis wobble at high speed, insufficient support during lane change and cornering, and greatly reduced rear riding comfort; carbon deposit and sticking or signal drift of ADS solenoid valve trigger air suspension warning light, failure of adaptive damping adjustment and frequent start-stop of air compressor. Without timely replacement, it will wear air distribution valve, height sensor, air pump and other precision components, resulting in cascading faults of the whole air suspension system and sharply increasing maintenance cost for luxury vehicles.

This rear right air shock absorber is 1:1 moulded strictly according to Mercedes W223 OEM OE data, with damping calibrated for heavy-load working condition of flagship S-Class rear axle. It adopts thickened multi-layer imported explosion-proof rubber air spring with wide temperature resistance, multiple high-pressure sealing structure, anti-rust precision piston rod, long-lasting anti-fading hydraulic oil and high-sensitivity ADS electronic components to improve aging resistance, crack resistance, air leakage resistance and fatigue resistance. It thoroughly solves common factory defects including rear right air leakage, rear sag, weak damping, unstable chassis and electronic signal error. This universal ADS high-spec assembly for W223 rear right fits both RWD and AWD chassis, paired with rear left OE A2233209703 to form a complete rear axle pair set. Direct bolt-on installation without chassis modification. After installation, air tightness inspection, vehicle height calibration and ADS adaptive matching calibration are required to fully restore the original flagship chassis stability, riding comfort and all intelligent air suspension functions with low return rate. Ideal for high-end auto repair, bulk wholesale and cross-border export.

Brand Fit: Mercedes‑Benz

Chassis Code: W223 (New S-Class)

Vehicle Model: Mercedes S-Class W223 high-spec version RWD/AWD

Version Fit: Factory Airmatic air suspension, with ADS adaptive damping, compatible with 2MATIC / 4MATIC

Not Compatible: Rear left position, low-spec air suspension without ADS, ordinary mechanical hydraulic shock absorber, old W222 chassis

Year Range: 2020‑Present W223 S-Class models with factory ADS air suspension (RWD & AWD)

Mounting Position: Rear axle right side (rear right only, cannot replace rear left)

Main OE Number: A2233209803, A2233200404 (iteratively interchangeable)

Product Type: Rear Right ADS Air Shock Absorber Assembly, W223 Airmatic Electronic Air Suspension Strut

Assembly Status: Brand-new complete assembly (including explosion-proof air spring, rear axle heavy-load damper cylinder, ADS solenoid valve, full sealing kit, upper & lower mounting rubber mounts)

Material: High-strength multi-layer aging-resistant imported high-pressure rubber air spring, anti-rust precision piston rod, high-pressure alloy cylinder, multi-layer composite high-pressure sealing oil seal, long-lasting anti-fade hydraulic damping oil, high-sensitivity ADS electronic assembly

Manufacturing Standard: Replicated per W223 OEM OE parameters, high & low temperature pressure test, rear axle heavy-load fatigue test, 100% air tightness pressure holding test, ADS electronic signal precise calibration

Fitting Remark: Exclusive for W223 new S-Class rear right, only for high-spec models with ADS air suspension. Fits both RWD and AWD. Rear left and old W222 are completely incompatible. Matched with rear left OE A2233209703/A2233200304 as rear axle pair set.

Sales Mode: Single retail, rear axle left-right pair set, bulk wholesale, full container export order

Inspection Standard: 100% high-pressure air tightness leakage test, damping coefficient calibration, high & low temperature durability test, heavy load fatigue test, full electronic signal inspection, dimension & appearance inspection

Package: Neutral heavy carton, custom color box, unbranded export package, OEM logo labeling available

Working Condition: Suitable for W223 S-Class business commute, highway cruise, full load travel and complex road conditions, fully compatible with Airmatic+ADS full intelligent electronic control logic

Installation Tip: No chassis modification or coding required. Air tightness inspection, vehicle height calibration and ADS adaptive matching calibration are mandatory after installation.

Recommended Purchase: Replace in pair with rear left A2233209703 to restore symmetrical rear posture and consistent damping support, fully recover OEM flagship chassis texture and comfort.

Compatibility Note: A2233209803 / A2233200404 is exclusive for Mercedes W223 new S-Class rear right ADS electronic air shock absorber. It fits both 2MATIC RWD and 4MATIC AWD. Only fits 2020+ W223 high-spec models with factory ADS adaptive air suspension. Not compatible with rear left, low-spec without ADS or old W222 chassis. Works with OE A2233209703 as rear left & right pair set.

Main OE Number: A2233209803, A2233200404 (two parts are iteratively interchangeable by OEM)

Interchangeable OE Reference: No other cross-referenced replacement OE numbers

Interchange Remark: A2233209803 and A2233200404 are OEM upgraded iterative parts. Mounting hole, damping stroke, rear axle load parameter and ADS electronic logic fully match OEM standard, bolt-on fit without modification or coding.

A: No. This unit is exclusively for W223 rear right. Rear axle left and right shock absorber have different structure, air spring pipeline, solenoid plug and damping parameter, not interchangeable. Rear left must use dedicated OE A2233209703. Mixed installation is forbidden.

A: Yes. This rear right ADS air shock absorber works for both 2MATIC RWD and 4MATIC AWD. Mounting holes and electronic connectors are fully identical.

A: It is equipped with OEM ADS adaptive solenoid valve, fully supporting original automatic hardness adjustment. It is high-spec air suspension assembly for W223, cannot be mixed with ordinary non-ADS mechanical strut.

A: No coding required. After installation, just performair tightness inspection, vehicle height calibration and ADS adaptive matching calibration and clear fault codes for normal operation.

A: Rear right sag, vehicle lower on right rear, overnight rear collapse, loose rear response over bumps, chassis wobble at high speed, insufficient cornering support, frequent air compressor activation, air suspension / ADS warning light, rear chassis abnormal noise and obvious comfort drop for rear passengers.

A: Not recommended. W223 flagship chassis requires highly consistent damping for rear axle left and right. New and old units differ in rebound, support and pressure retention. Single side replacement may cause body tilt, pulling and uneven tire wear. Recommended to replace rear axle in pairs (matched with A2233209703).

A: Not compatible at all. W223 new chassis structure, air suspension system, electronic connector and mounting holes are completely different from W222, cannot be fitted.

1. OEM Labeling: Support logo silk printing, neutral unbranded export packaging and custom color box for cross-border platforms including Amazon, eBay, AliExpress.

2. Bulk Supply: A2233209803 W223 S-Class Rear Right ADS air shock absorber in stock continuously. Available for single retail, rear axle left-right pair set, bulk wholesale and full container export. Stable stock, fast lead time and competitive price for premium auto parts.

3. Complete W223 Air Suspension Package: One-stop supply of full W223 S-Class air suspension spare parts, including front & rear ADS air struts, air springs, air compressors, distribution valves, height sensors and repair kits for complete vehicle maintenance order.

4. E-commerce Material Support: Free product photos, close-up detail pictures, OE matching table, W223 fitment list and installation calibration documents for store listing, short video promotion and detail page decoration.