Guangzhou Wenny Auto Parts Co., Ltd.
| Car maker | Mercedes-Benz |
| Delivery Time | 1-7 working days |
| Condition | Brand-new control arm |
| Packaging Details | Support Wholesale & Neutral Packaging, cartons, ballets |
| Payment Terms | L/C,D/A,D/P,T/T |
| Product name | Front Upper Lateral Control Arm (Track Control Arm) |
| Position | Front Upper Lateral Left or Right |
| Packing | Neutral Packing or Customized design |
| Supply Ability | 50000 pcs per month |
| OE Number | A1663301707, A1663301807 |
| Model Number | Mercedes-Benz GL-Class (X166, 2012–2015) / GLS-Class (X166, 2015–2019) — catalog fitment also GLE (2015–2019), M-Class (2011–2015) |
| Brand Name | SuspAir |
| Place of Origin | China |
| Certification | ISO9001/CE |
View Detail Information
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Product Specification
| Car maker | Mercedes-Benz | Delivery Time | 1-7 working days |
| Condition | Brand-new control arm | Packaging Details | Support Wholesale & Neutral Packaging, cartons, ballets |
| Payment Terms | L/C,D/A,D/P,T/T | Product name | Front Upper Lateral Control Arm (Track Control Arm) |
| Position | Front Upper Lateral Left or Right | Packing | Neutral Packing or Customized design |
| Supply Ability | 50000 pcs per month | OE Number | A1663301707, A1663301807 |
| Model Number | Mercedes-Benz GL-Class (X166, 2012–2015) / GLS-Class (X166, 2015–2019) — catalog fitment also GLE (2015–2019), M-Class (2011–2015) | Brand Name | SuspAir |
| Place of Origin | China | Certification | ISO9001/CE |
| High Light | A1663301707 ，A1663301807 | ||
Front Upper Lateral Control Arm Left Right for Mercedes GL GLS X166 2012-2019 A1663301707 A1663301807
Front upper lateral control arm (track control arm) for the Mercedes-Benz GL / GLS-Class (X166, 2012–2019) — Left A1663301707 / Right A1663301807 (Mercedes formats 166 330 17 07 / 166 330 18 07). European catalog data confirms the position: Front Axle, Upper, Left / Right, aluminium construction, with ball joint, dimensions 290 × 260 × 108 mm, approx. 1.5 kg per side. Catalog fitment covers GL-Class (2012–2015) and GLS-Class (2015–2019), and additionally GLE (2015–2019) and M-Class (2011–2015). Every unit is quality-checked before shipment and with an 18-month warranty.
| Item | Content |
| Product Name | Front Upper Lateral Control Arm (Track Control Arm) - Front Axle, Upper |
| Genuine OE No. (Left) | A1663301707 (166 330 17 07 / 1663301707) |
| Genuine OE No. (Right) | A1663301807 (166 330 18 07 / 1663301807) |
| Same-Family OE | No further superseded numbers in the catalog OE list - only the A-prefix format variants of the same arm |
| OE Note | Left/right mirror pair - side-specific, not interchangeable; formats catalog-verified |
| Aftermarket Cross No. | Interchange list available on request - order by OE number |
| Applicable Brand | Mercedes-Benz |
| Vehicle Line | GL-Class (X166, 2012-2015) / GLS-Class (X166, 2015-2019) - catalog fitment also GLE (2015-2019), M-Class (2011-2015) |
| Model Years | 2012-2019 (supplier table: GL/GLS X166); catalog: GL 2012-2015 + GLS 2015-2019 - confirm by VIN |
| Chassis Code | X166 (per supplier table); catalog fitment also W166-platform models (GLE / M-Class) |
| Common Models | GL350 / GL450 / GL550 / GLS550 etc. (X166) |
| Installation Position | Front axle - Upper - Left (A1663301707) / Right (A1663301807) |
| Arm Type | Control Arm (track control arm) - per catalog |
| Material | Aluminium (catalog-verified) |
| Ball Joint | With ball joint (catalog: supplementary info) |
| Dimensions | 290 x 260 x 108 mm (catalog) |
| Reference Weight | Approx. 1.5 kg per side (catalog: 1.489 kg) |
| Paired Article | Left & Right sold as mirror pair - side-specific, not interchangeable |
| Recommended Accessory | Mounting bush / mounting (catalog lists matching bushes and mountings) |
| Electric / Damping | None - plain mechanical suspension linkage (no electrical damping) |
| Packing | Individual protective packaging; left/right pair set available |
| Warranty | 18 months |
| Shipping | Sea / air / courier; export-standard packaging |
| Selling Point | Detail |
| Mercedes GL/GLS X166 Fit | Front upper lateral control arms for Mercedes-Benz GL/GLS-Class X166 (2012-2019) |
| Wide Platform Coverage | Catalog fitment also covers GLE (2015-2019) and M-Class (2011-2015) |
| Left/Right Mirror Pair | Left A1663301707 + Right A1663301807 - correct side-specific pair, not interchangeable |
| Aluminium + Ball Joint | Lightweight aluminium arm with ball joint (catalog-verified) |
| Front Upper Position | Correct position: Front Axle, Upper - restores factory suspension geometry |
| Accessory Support | Matching mounting bush and mounting available |
| Precise Geometry | Restores wheel alignment values, eliminates wandering and tire wear |
| 18-Month Warranty | Extended 18-month warranty + pre-sale VIN check + after-sales technical support |
Q1: Which vehicles does this fit? Mercedes-Benz GL-Class (X166, 2012–2015) / GLS-Class (X166, 2015–2019) per the supplier table. European catalog data also lists GLE (2015–2019) and M-Class (2011–2015). Confirm the exact model and year by VIN.
Q2: Is the left/right side interchangeable? No — this is a mirror pair: Left A1663301707 and Right A1663301807 are side-specific and NOT interchangeable. Order by side.
Q3: What is this arm exactly? The front upper lateral control arm / track control arm — position: Front Axle, Upper (catalog: "Front Axle Left/Right, Upper"). Aluminium construction, with ball joint (catalog-verified), approx. 1.5 kg. No electrical damping — a plain mechanical suspension linkage.
Q4: Are there other numbers in this family? The catalog OE list contains only the A-prefix format variants of the same arm — no further superseded numbers. Order by the exact OE number; confirm by VIN.
Q5: Is this the upper arm (not the lower)? Yes — this is the upper control arm of the X166 front axle (aluminium, with ball joint — distinctly lighter than the aluminium lower-arm family 166 330 01 07 / 02 07, which has no ball joint). Verify the position against the original unit by VIN.
Q6: Do I need to replace both sides at the same time? Same-axle pair replacement is strongly recommended; an old arm on the other side causes uneven geometry and tire wear.
Q7: What should I pay attention to during installation? Tighten all bolts to the workshop-manual torque specifications with the suspension under load; after installation perform a wheel alignment (camber/caster/toe) and check the ride height per workshop manual.
Q8: Warranty policy and shipping damage? 18-month warranty under normal use. For shipping damage, inspect within 48 hours of receipt and send photos/video — the seller arranges a replacement.
Q9: Service life and maintenance? Depends on road conditions and climate. Check the bush for cracks and the ball joint for play during routine service; replace the arm if bush wear, play or crash damage is found.
Q10: Are aftermarket alternatives available? The interchange list for these OE numbers is available on request. Order by the exact OE number and confirm the model/year and side by VIN.
Company Details
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2013
Total Annual:
1500000 USD dollars-3000000 USD dollars
Employee Number:
200~250
Ecer Certification：
Verified Supplier
Founded in 2013, our factory is deeply engaged in the production and development of automotive air suspension aftermarket parts. Our main product line covers air suspension strut assembly, air spring bellow, air compressor, valve block, height sensor and full range of repair kits, which are widely... Founded in 2013, our factory is deeply engaged in the production and development of automotive air suspension aftermarket parts. Our main product line covers air suspension strut assembly, air spring bellow, air compressor, valve block, height sensor and full range of repair kits, which are widely...
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