1. Sunroof, Convertible & Hardtop Auto Parts For Sale
  2. sku: 16033037956121602
  3. MERCEDES 1237800038

MERCEDES Sunroof Wind Deflector Raise Lower Arm 123-780-00-38 Benz Raise/lower

fits model: W123, W126, 300d, 300sd, 280e. make: Mercedes.

1237800038 Mercedes-benz W123 W126 Sunroof Wind Deflector Open Raise/lower Arm 300d 300sd 280e

( Manufacturer Part Number: 1237800038 ), ( Part Type: Deflector Arm ), ( Ipn: 123 780 00 38 ), ( Color: Silver ), ( Material: Plastic, Steel ), ( Vintage Part: Yes ), ( Universal Fitment: No ), ( Country Of Origin: Germany )

Review MERCEDES benz Sunroof Wind Deflector Open Raise/lower Arm fits W123 W126 300D 300SD 280E

The **Mercedes-Benz 1237800038 Sunroof Wind Deflector Raise/Lower Arm** is a precision-engineered component designed exclusively for the **W123 (1985 1993) and W126 (1991 1997) model generations**, including the iconic **300D, 300SD, and 280E** sedans. Crafted from high-grade, durable materials, this arm is a critical part of the sunroof mechanism, ensuring smooth and reliable operation while maintaining the vehicle s signature luxury and performance. The component is meticulously manufactured to Mercedes-Benz specifications, guaranteeing a perfect fit with the original sunroof assembly, including the wind deflector system, which helps reduce wind noise and turbulence when the roof is partially open. Built to withstand the demands of daily driving, this arm is resistant to corrosion and wear, preserving both functionality and the aesthetic integrity of the vehicle s interior. Whether restoring a classic Mercedes or maintaining one in pristine condition, this part is essential for restoring or preserving the seamless operation of the sunroof, allowing drivers to enjoy the open-air experience without compromising on comfort or refinement. Its compatibility with these legendary models underscores its importance in preserving the driving dynamics and timeless elegance that define Mercedes-Benz engineering.

### **Pros and Cons of Buying a Mercedes-Benz W123/W126 Sunroof Wind Deflector Raise/Lower Arm (300D/300SD/280E)**

#### **Overview**

The **Mercedes-Benz W123 (1985 1991)** and **W126 (1989 1991)** are classic models known for their reliability, luxury, and timeless design. The **sunroof wind deflector raise/lower arm** is a critical component for proper sunroof operation. Below is a detailed analysis of the pros and cons of purchasing this part, along with a conclusion and recommendation.

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### **Pros**

1. **Reliability and Durability**

- Mercedes-Benz mechanical components, especially those from the W123/W126 era, are built to last if maintained properly. The sunroof arm is a relatively simple but robust part, often lasting decades if not worn out by rust or excessive use.

- Many original parts from this era are still available due to their widespread use, ensuring long-term availability.

2. **Compatibility and Fit**

- The W123 and W126 share many mechanical components, including sunroof systems. The arm in question fits both models, making it a versatile purchase.

- Aftermarket and OEM replacements are widely available, reducing the risk of sourcing issues.

3. **Functionality and Comfort**

- A properly functioning sunroof arm ensures smooth operation of the sunroof, which enhances ventilation, natural lighting, and overall driving comfort especially in European climates where open-top driving is common.

- The wind deflector helps reduce wind noise and improves airflow, making long drives more pleasant.

4. **Resale Value of the Vehicle**

- Restoring or maintaining a W123/W126 with functional sunroof components can preserve or even increase its value, particularly among classic car enthusiasts who appreciate restored luxury vehicles.

5. **Ease of Installation**

- The sunroof arm is typically a straightforward replacement, requiring basic mechanical skills and standard tools. Many owners or mechanics can install it without professional assistance, saving labor costs.

6. **Aesthetic and Luxury Appeal**

- The W123 and W126 are iconic luxury sedans, and a fully functional sunroof adds to their charm and desirability. Restoring this feature can make the car more appealing for collectors and showroom displays.

7. **Cost-Effective Replacement**

- Compared to the cost of a full sunroof overhaul or replacement, the arm itself is relatively inexpensive. Purchasing an original or high-quality aftermarket part ensures longevity without breaking the bank.

---

### **Cons**

1. **Age and Wear**

- Parts from the W123/W126 era are prone to rust, especially in older vehicles exposed to harsh weather conditions. The sunroof arm may be corroded or brittle, requiring careful inspection before purchase.

- Over time, rubber seals and plastic components in the sunroof mechanism can degrade, leading to leaks or sticking issues even if the arm itself is functional.

2. **Availability of Genuine Parts**

- While the arm is widely available, sourcing **genuine Mercedes-Benz parts** (especially for older models) can be challenging and expensive. Aftermarket parts may not match the quality or fit perfectly.

- Some sellers may offer "rebuilt" or "used" arms, which could have hidden damage or reduced lifespan.

3. **Potential for Counterfeit or Low-Quality Parts**

- The aftermarket for classic Mercedes parts is flooded with knockoffs or poorly made replicas. A low-quality arm may fail quickly, leading to repeated replacements and frustration.

- Always verify the seller s reputation and the part s authenticity before purchasing.

4. **Complexity of Sunroof Systems**

- The sunroof mechanism includes cables, pulleys, and seals, any of which could fail independently of the arm. Replacing just the arm may not fully resolve sunroof issues if other components are worn.

- Some W126 models (especially later variants) may have slightly different sunroof designs, requiring additional adjustments or parts.

5. **Labor and Diagnostic Costs**

- If the sunroof arm is part of a larger issue (e.g., misaligned tracks, broken cables), diagnosing and fixing the root cause may require professional labor, increasing costs.

- Older vehicles may lack modern diagnostic tools, making troubleshooting more time-consuming.

6. **Environmental and Safety Considerations**

- Sunroofs can pose safety risks if not properly maintained. A failing arm or stuck sunroof could lead to accidents, especially in emergency situations where the sunroof needs to be opened quickly.

- Rust or corrosion in the arm could weaken it over time, potentially causing it to snap during operation.

7. **Maintenance Requirements**

- Even with a new arm, the sunroof system requires periodic lubrication, seal checks, and cleaning to prevent jamming or leaks. Neglecting maintenance can lead to premature failure.

---

### **Conclusion**

The **sunroof wind deflector raise/lower arm for the Mercedes-Benz W123/W126 (300D/300SD/280E)** is a practical and often cost-effective upgrade or replacement part. Its pros such as reliability, compatibility, and the enhancement of driving comfort make it a worthwhile investment for owners of these classic models. However, the cons particularly the risk of rust, counterfeit parts, and the complexity of sunroof systems require careful consideration.

For most owners, **purchasing a high-quality, preferably OEM or reputable aftermarket arm** is a sound decision, provided the rest of the sunroof mechanism is in decent condition. If the vehicle has significant rust or other sunroof-related issues, it may be prudent to address those first or consider a full sunroof restoration.

---

### **Recommendation**

1. **Verify the Part s Condition**

- Inspect the arm for rust, cracks, or excessive wear before purchasing. If buying used, test its functionality or request a replacement if it appears damaged.

- Prefer **OEM parts** or **well-reviewed aftermarket brands** (e.g., Remy, ACDelco, or specialized classic car part suppliers) to avoid counterfeits.

2. **Check Compatibility**

- Confirm that the arm fits your specific model year and variant (W123 vs. W126, 300D vs. 300SD, etc.). Some later W126 models may require slight modifications.

3. **Address Underlying Issues**

- If the sunroof has leaks, sticking, or misalignment, replace the arm as part of a broader restoration. Consider lubricating tracks and seals to ensure smooth operation.

4. **Install Properly**

- Follow Mercedes-Benz service manuals or trusted online guides for installation. If unsure, consult a mechanic experienced with classic Mercedes models.

5. **Maintain Regularly**

- After installation, lubricate the sunroof mechanism periodically and check seals for wear. Clean the tracks and arm to prevent debris buildup.

6. **Budget for Additional Costs**

- Account for potential extra expenses, such as labor if professional installation is needed or additional parts (e.g., new cables or seals) if the sunroof is beyond basic repair.

**Final Verdict:**

For enthusiasts restoring or maintaining a W123/W126, replacing the sunroof wind deflector arm is a **recommended upgrade** that enhances functionality and value. However, prioritize quality and thorough inspection to avoid costly failures. If the rest of the sunroof system is neglected, the arm alone may not provide long-term satisfaction.

Details:

Switch from left to right by popping out and reversing the plastic clip Left or Right Lever for Manual Automatic W123 Sunroof.

part #: 1237800038 price

  • $27.99

specifications sunroofconverti:

  • for models: W123, W126, 300d, 300sd, 280e
  • for makes: Mercedes
  • mpn: 1237800038
  • part type: Deflector Arm
  • ipn: 123 780 00 38
  • color: Silver
  • material: Plastic, Steel
  • vintage part: Yes
  • universal fitment: No
  • country of origin: Germany

seller sunroofconverti:

  • # reviews: 1256
  • rating: 100.0%
  • city: Baltimore, Maryland

offer sunroofconverti:

  • sold: 0
  • options: Ship-to-home
  • started: March 8, 2026
  • availability: In Stock

returns sunroofconverti:

  • paid by: Buyer
  • time: 30 Days
  • policy: Returns Accepted

shipping sunroofconverti:

  • class: Standard, Expedited
  • service: USPS Ground Advantage, USPS Priority Mail
  • transit: 4-9 Days
  • type: Calculated
  • cost: $0.00
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general sunroofconverti:

  • Exterior Parts Accessories > Roofs, Tops Sunroofs > Sunroofs Parts
  • condition: Used
for models: w123, w126, 300d, 300sd, 280e, for makes: mercedes, part type: deflector arm, vintage part: yes, universal fitment: no, country of origin: germany,
category: auto parts > exterior parts accessories > roofs, tops sunroofs > sunroofs parts, color: silver, material: plastic, steel, sku: 16033037956121602,
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1 offer $27.99 USD
  • Used. Offer #1 priced at $27.99 + $0.00 shipping estimate = $27.99* total. Left or Right Lever for Manual or Automatic W123 Sunroof.FREE SHIPPING

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