MERCEDES 906-684-04-37 Rest Benz

( Manufacturer Part Number: 906-684-04-37 ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Make: Mercedes-benz ), ( Year: 2019 2020 2021 2022 2023 2024 2025 ), ( Parts Included: Only Part Reference 4 On The Diagram Is Included )

Review MERCEDES benz Genuine Foot Rest fits 2019–2025

The **Mercedes-Benz 906-684-04-37** is a specialized, high-quality **original equipment manufacturer (OEM) replacement part** designed exclusively for Mercedes-Benz vehicles, serving as the **rest (rear) brake master cylinder** in select models. This precision-engineered component is integral to the hydraulic braking system, ensuring optimal braking performance, safety, and reliability. Crafted from durable materials, including high-grade steel and corrosion-resistant alloys, the **906-684-04-37** is built to withstand the demands of daily driving, extreme temperatures, and prolonged exposure to moisture, oil, and road debris. Its robust construction minimizes the risk of leaks, brake fade, or hydraulic failure, which are critical factors in maintaining vehicle control and passenger safety.

The brake master cylinder features a **twin-piston design**, allowing for balanced hydraulic pressure distribution between the front and rear braking circuits. This dual-circuit system enhances redundancy, ensuring that even if one circuit fails, the driver retains partial braking capability, reducing the likelihood of a complete brake system collapse. The internal components, including the **primary and secondary pistons, seals, and reservoir**, are meticulously machined to exacting tolerances to prevent premature wear and ensure smooth operation. The **integrated brake fluid reservoir** is designed to accommodate the vehicle s hydraulic demands, with a clear or tinted plastic cover that allows for easy fluid level monitoring, aiding in proactive maintenance.

This part is a **direct-fit replacement**, meaning it is engineered to match the exact specifications of the original equipment, including mounting points, bolt patterns, and hydraulic connections. It is compatible with certain Mercedes-Benz models equipped with rear-wheel braking systems that rely on a master cylinder for hydraulic pressure distribution. The **906-684-04-37** adheres to Mercedes-Benz s stringent quality standards, ensuring compatibility with the vehicle s electronic stability control (ESC), anti-lock braking system (ABS), and other advanced braking technologies. Its installation requires adherence to factory procedures, including proper bleeding of the brake lines to eliminate air pockets that could compromise braking efficiency.

Beyond its functional excellence, this master cylinder reflects Mercedes-Benz s commitment to **engineering precision and longevity**. The part is designed to integrate seamlessly with the vehicle s braking system, offering consistent pedal feel, reduced brake travel, and enhanced responsiveness hallmarks of a well-tuned hydraulic system. Whether used in a modern luxury sedan or a classic Mercedes-Benz model, the **906-684-04-37** ensures that the braking performance remains at peak efficiency, aligning with the brand s reputation for performance, reliability, and driver confidence. For owners and mechanics alike, this component represents a critical investment in maintaining the integrity of the vehicle s braking system, extending its service life, and preserving its performance characteristics.

### **Pros and Cons of Buying a Mercedes-Benz 906-684-04-37 (VIN) Used Car**

#### **Overview**

The **Mercedes-Benz 906-684-04-37** VIN corresponds to a **W210 E-Class (facelift model, typically from 2002 2005)**. This generation is known for its luxury, reliability (for a Mercedes), and strong resale value. However, like any used luxury vehicle, it comes with trade-offs.

---

### **Pros**

**1. Strong Brand Prestige and Luxury Appeal**

The E-Class W210 is one of Mercedes-Benz s most iconic models, offering a refined, high-end driving experience. It retains strong resale value compared to many competitors, making it a sound long-term investment if maintained properly.

**2. Reliability (Compared to Earlier Models)**

The W210 facelift (2002 ) improved upon earlier reliability issues, particularly with the **M113 (4-cylinder), M112 (V6), and M271 (V8) engines**. The **OM611 diesel** (common in the E320 CDI) is also well-regarded for durability if properly serviced. However, **electrical gremlins** (e.g., infotainment, sensors) remain a persistent issue.

**3. Comfort and Ride Quality**

The W210 is known for its **smooth suspension, quiet cabin, and premium interior materials**. The **E320 (V6) and E500 (V8)** models offer strong power delivery, making them enjoyable to drive despite their age.

**4. Availability of Parts and Mechanics**

As a mature model, **parts are widely available**, and many independent mechanics (and dealerships) are familiar with W210 repairs. This reduces long-term ownership costs compared to rarer Mercedes models.

**5. Potential for Modifications**

Enthusiasts can upgrade **exhaust systems, suspension, and performance parts** (e.g., aftermarket ECUs for better throttle response). The **E320 (M112) and E500 (M271)** benefit most from tuning.

**6. Fuel Efficiency (Diesel Models)**

The **E320 CDI (OM611)** offers ** 25 30 MPG highway**, making it more economical than gasoline equivalents. Diesel models also tend to have **longer engine lifespans** if maintained.

**7. Classic Mercedes Design**

The W210 s **timeless styling** (especially the 2002 facelift) remains attractive, and its **interior quality** (leather, wood trim, climate control) is still superior to many modern compact luxury cars.

---

### **Cons**

**1. Electrical System Issues**

- **Faulty sensors** (e.g., wheel speed, throttle position) causing **check engine lights (CEL)**.

- **Infotainment glitches** (CD player, radio, climate control).

- **Power window/door lock failures** due to corroded connectors.

- **Battery drain** from parasitic draws (common in older Mercedes).

These issues are **annoying but often fixable** with proper diagnostics.

**2. Transmission Problems (Automatic Models)**

- **Slipping gears**

- **Delayed engagement**

- **Fluid leaks** (leading to rough shifting)

- **Solenoid failures**

Regular **transmission fluid changes** (every 60K 80K miles) help prevent major issues.

**3. Suspension Wear**

The **air suspension (optional on higher trims)** can fail, leading to **uneven ride height or complete collapse**. The **coil springs and shocks** also degrade over time, requiring **replacement every 80K 120K miles**.

**4. Rust (Especially in Snowy Regions)**

The **wheel arches, sills, and undercarriage** are prone to rust, particularly in **northern climates**. A **rust inspection** is critical before purchase.

**5. High Maintenance Costs**

While parts are available, **labor costs** (especially at dealerships) can be **expensive**. Independent mechanics may charge less but require verification of their expertise with Mercedes.

**6. Fuel Economy (Gasoline Models)**

The **E350 (V6) and E500 (V8)** average ** 18 22 MPG**, making them less efficient than modern hybrids or diesels. The **E220 (4-cylinder)** is slightly better but still thirsty compared to today s standards.

**7. Safety (Compared to Modern Standards)**

- **Modern safety tech** (blind-spot monitoring, lane-keeping assist, automatic emergency braking).

- **Up-to-date structural reinforcements** (newer Mercedes have improved safety cages).

- **Electronic stability control (ESC)** was introduced later in the model run.

**8. Depreciation vs. Modern Alternatives**

While the W210 holds value well, **modern luxury sedans (BMW 5 Series, Audi A6, Lexus GS)** offer **better fuel efficiency, tech, and safety** for similar prices. If you prioritize **cutting-edge features**, a newer car may be more appealing.

**9. Potential for Hidden Damage**

- **Leaking head gaskets** (especially in the **M112 V6**).

- **Water pump failures** (leading to overheating).

- **CV joint wear** (common in high-mileage examples).

A **pre-purchase inspection (PPI) by a Mercedes specialist** is **highly recommended**.

**10. Parts Counterfeit Risk**

Due to the model s age, **aftermarket parts (especially electrical components)** may be **low-quality or counterfeit**. Stick to **OEM or reputable aftermarket brands** (e.g., **Mercedes-Benz Parts, ACDelco, Bosch**).

---

### **Key Considerations Before Buying**

1. **Check the VIN for Accidents**

- Use **Carfax or AutoCheck** to verify **no major accidents or flood damage**.

- Look for **frame damage or mismatched paint** (common in salvaged cars).

2. **Service History is Critical**

- A **full service history** (especially for **transmission fluid, timing belt, and suspension**) is a **must**.

- **No service records?** Assume **hidden problems** and budget for repairs.

3. **Test Drive for Electrical Issues**

- **Turn on all electronics** (lights, windows, climate control) to check for **intermittent failures**.

- **Listen for unusual noises** (whining from the transmission, rattling from suspension).

4. **Inspect the Engine Bay**

- **Check for oil leaks** (valve cover gaskets, rear main seal).

- **Look for rust** on the **subframe and exhaust manifold**.

- **Test the cooling system** (bleed air from the radiator to avoid overheating).

5. **Transmission Check**

- **Shift smoothly through all gears** (no hesitation or jerking).

- **Check for fluid leaks** (red fluid under the car transmission fluid).

6. **Suspension and Steering**

- **Bounce the car** to check for **soft or uneven suspension**.

- **Test for steering play** (could indicate **rack or joint wear**).

7. **Rust Inspection**

- **Check wheel wells, sills, and undercarriage** for **rust holes**.

- **Snow-belt buyers:** Expect **more rust** and budget for repairs.

8. **Budget for Repairs**

- **Expect $3,000 $8,000 in repairs** over the next **50,000 miles** if the car is neglected.

- **Major issues (transmission, suspension, electrical)** can cost **$2,000 $5,000 each**.

---

### **Best Use Cases for a W210 E-Class**

**Luxury commuting** (if well-maintained).

**Weekend driver** (if you enjoy classic Mercedes styling).

**Investment piece** (if you plan to restore and sell later).

**Modding project** (for enthusiasts who want to upgrade performance).

**Secondary vehicle** (if you can afford occasional repairs).

### **Worst Use Cases**

**Daily driver without a repair budget** (electrical and mechanical issues will arise).

**Long-distance highway use** (older suspension and transmission may struggle).

**Harsh climates** (salt corrosion accelerates rust).

**If you want modern tech/safety** (blind spots, backup cameras, etc.).

---

### **Final Recommendation**

You **find a well-documented example** with **full service records**.

You **budget $15,000 $25,000** (for a

Details:

Electrical parts are not returnable. Parts must be resalable and in the original packaging. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer.

part #: 9066840437 prices

• $48.76-$50.00

specifications pedalspadsaz:

• for makes: Mercedes
• for years: 2019-2025
• mpn: 906-684-04-37
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• make: Mercedes-benz
• year: 2019 2020 2021 2022 2023 2024 2025
• parts included: Only Part Reference 4 On The Diagram Is Included

seller pedalspadsaz:

• city: Medford, Oregon
• rating: 88.1%
• # reviews: 359

shipping pedalspadsaz:

• cost: $0.00
• service: Standard, Expedited, Overnight
• class: Standard, Expedited, One-day
• type: Fixed
• transit: 4-10 Days

general pedalspadsaz:

• Car Truck Parts Accessories > Interior Parts Accessories > Pedal Assemblies, Pads Parts
• condition: New

returns pedalspadsaz:

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

payments pedalspadsaz:

• other
• wallet: Paypal
• credit card: Diners-club

offer pedalspadsaz:

• availability: In Stock
• options: Ship-to-home
• started: March 6, 2026
• sold: 0
• quantity: 2

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