A166 320 6766 Front Left Air Suspension Repair Kit for Mercedes-Benz W166/X166
1. Product Introduction
Original OE Number: A166 320 6766
Product Name: Mercedes-Benz W166/X166 Left Front Air Suspension Repair Kit
Installation Position: Dedicated for left front air suspension only. Not universal for right front, rear positions or front/rear interchange. Exclusively suitable for Mercedes-Benz W166/X166 chassis models with original Airmatic air suspension. Not applicable for mechanical suspension, rear air suspension, right front air suspension and old W164/X164 chassis models.
Product Description: A166 320 6766 is an original matching professional repair kit for the left front air suspension of Mercedes-Benz W166/X166 full-size luxury SUVs. It fully matches the sealing specifications of the original left front air spring, complete with full sets of sealing rubber rings, dust-proof accessories and sealing repair components. This kit is specially designed for common minor faults of W166/X166 left front air suspension, including slight chronic air leakage, sealing ring aging, minor pressure relief and front sinking after parking. There is no need to replace the expensive complete air spring assembly. It can accurately repair minor faults such as poor sealing, micro air leakage and occasional air suspension alarm by replacing a full set of sealing accessories. Featuring high fitting accuracy and excellent weather resistance, it maintains long-term stable air tightness after repair, greatly reducing vehicle maintenance costs. It is a high-cost-performance repair accessory for minor faults of W166/X166 left front air suspension.
Core Advantages
- ✅ Developed in strict accordance with the original A1663206766 left front air suspension sealing parameters. The accessory size, sealing accuracy and mounting positions fully match the original W166/X166 left front air spring, supporting non-destructive repair without original vehicle structure modification
- ✅ Specially solves typical faults of W166/X166 left front air suspension: pressure relief caused by aging sealing rings, slight chronic air leakage, single-side front sinking after parking and minor air suspension fault codes under bumpy conditions, optimized for front suspension high-frequency bumping and seasonal temperature aging working conditions
- ✅ Adopts imported weather-resistant high-elastic sealing materials with excellent high and low temperature resistance, aging resistance and deformation resistance, avoiding hardening and secondary air leakage of ordinary repair kits, ensuring long-term stable air tightness after repair
- ✅ Low-cost precision maintenance solution, targeting minor sealing faults without replacing the entire air spring assembly, effectively reducing vehicle maintenance costs and improving repair cost performance for repair shops
- ✅ Fully compatible with original Airmatic air suspension electronic control system. After repair, the vehicle body height and automatic leveling function work normally without fault codes, completely restoring the original factory driving texture
- ✅ Every product undergoes strict factory air tightness adaptation test and weathering aging test with high fitting accuracy and low error rate, suitable for 4S routine maintenance, professional repair shop precision overhaul and cross-border bulk stocking
2. Custom Attributes (E-commerce Listing)
Brand: Mercedes-Benz
Chassis Code: W166 (ML/GLE-Class), X166 (GL/GLS-Class)
Compatible Vehicle: Mercedes-Benz ML, GLE, GL, GLS
Applicable Years: 2012–2019 All original factory air suspension versions
Installation Position: Front air suspension, left front only, not universal for right front and rear positions
Product OE: A166 320 6766
Matching Right Front OE: A166 320 6866
Product Type: Air Suspension Repair Kit / Left Front Air Spring Sealing Repair Accessory
Full Assembly: Non-assembly, dedicated left front air suspension sealing repair kit
Compatible System: Mercedes-Benz Original Airmatic Adaptive Air Suspension System
Material: European SUV-specific high and low temperature resistant high-elastic sealing glue, wear-resistant dust-proof accessories, anti-aging precision sealing components, weather-resistant reinforced repair parts
Process Standard: Original sealing parameter replication, high-precision sealing processing, air tightness adaptation detection, weathering aging treatment, non-destructive repair and installation
Compatibility Note: Only suitable for W166/X166 chassis models with original left front air suspension; not applicable for mechanical suspension versions, W164/X164 old chassis, right front and rear air suspension positions; left and right air suspension sealing structures are different and cannot be mixed
3. Compatible Vehicles
Important Notice: This product is a dedicated left front air suspension repair kit for Mercedes-Benz W166/X166 chassis, not universal for left/right or front/rear positions. It is only applicable to models equipped with original Airmatic left front air suspension, specially for repairing left front air suspension sealing and air leakage faults. Mechanical suspension vehicles, old W164/X166 chassis and right front/rear air suspension positions are not compatible.
- Mercedes-Benz ML-Class W166 Air Suspension Versions (ML350, ML400, ML500)
- Mercedes-Benz GLE-Class W166 Air Suspension Versions (GLE320, GLE350, GLE400, GLE450, GLE500)
- Mercedes-Benz GL/GLS-Class X166 Air Suspension Versions (GL350, GL450, GL500, GLS450, GLS500)
Applicable Years: 2012–2019
4. Interchangeable OE Numbers
Main OE Number: A166 320 6766 (Left Front)
Interchangeable Alternative OE: A1663205166, A1663205566, A1663206713
Matching Right Front OE: A166 320 6866
Interchange Remark: All the above numbers are original iterative universal repair part numbers for W166/X166 left front air suspension, with 100% interchangeable structure, size, sealing parameters and mounting positions, supporting direct replacement without compatibility faults.
5. FAQ
Q1: Is A1663206766 for left or right side? Can it be used for right front?
A: This repair kit is left front dedicated and cannot be used for right front position. The right front must adopt the matching model A1663206866. Left and right structures and sealing parameters are different, mixed use will cause poor fitting, air leakage and fault codes.
Q2: Can it be used for rear suspension or old W164 models?
A: No. The front and rear air suspension structures are completely different, and W164 and W166 chassis air suspension parts are not interchangeable. This kit only fits W166/X166 left front air suspension.
Q3: Is it suitable for mechanically suspended models?
A: No. Mechanical suspension models are not equipped with air suspension inflation systems, pipelines and mounting bases, with no installation conditions for air suspension repair.
Q4: Is computer programming required after repair?
A: No programming and coding required. Adopting 1:1 original parameter adaptation, only air tightness test, body height calibration and fault code clearing are needed after repair for normal use.
Q5: What kind of faults are suitable for this repair kit instead of assembly replacement?
A: This repair kit is applicable to vehicles with only slight chronic left front air leakage, slight single-side front sinking after parking and occasional minor air suspension fault codes, while the air spring bladder has no cracking, bulging or structural damage. It can perfectly repair minor sealing faults without replacing the assembly. If the air spring has large-area cracking, damage or serious collapse, replacing the air suspension assembly is recommended.
Q6: What is the difference between 6766 and 6866?
A: A1663206766 = Left Front Repair Kit; A1663206866 = Right Front Repair Kit. The two have similar appearances but different internal structures, stretching angles and sealing parameters, which must be used separately according to left and right positions and cannot be interchanged.
6. Custom Service
- OEM & Private Label Customization: Support custom brand logo silk printing, neutral no-label export packaging and foreign trade color box customization, suitable for cross-border platforms such as Amazon, eBay, AliExpress.
- Bulk Supply Service: Support large-volume spot goods and full-container foreign trade orders for A1663206766 Mercedes-Benz left front air suspension repair kits with long-term stable supply.
- Complete Air Suspension Parts Matching: Supply full range of W166/X166 air suspension accessories, including right front repair kits, front and rear air spring assemblies, air suspension repair parts, air compressors, distribution valves, dryer bottles and height sensors for one-stop procurement.
- E-commerce Material Support: Provide real product photos, detailed close-up images, specification tables and maintenance installation reference materials for direct store listing.
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