MERCEDES 1407500490 Latch Vacuum Accumulator 1407500790 Benz

( Manufacturer Part Number: 1407500490 ), ( Country Of Origin: Germany ), ( Remote Controls: Central Locking System ), ( Ipn: 1407500790 ), ( Type: Vacuume Accumulator ), ( Features: Easy Installation ), ( Finish: Oem ), ( Fitment Type: Direct Replacement ), ( Placement On Vehicle: Rear ), ( Manufacturer Warranty: 90 Day )

Review MERCEDES benz Latch Vacuum Accumulator Oem fits W140 S500 500SEC 600SEC 1992–1999

The **Mercedes-Benz 1407500490 Latch Vacuum Accumulator** is a precision-engineered component designed exclusively for the **W140 chassis** series, specifically tailored to the **S500 (500 SEL) and 600 SEL (600 SEC)** models produced between **1992 and 1999**. This high-performance accumulator plays a critical role in the vehicle s **power brake system**, ensuring smooth, responsive braking and maintaining optimal vacuum pressure for consistent pedal feel. Crafted from durable materials, including a robust **aluminum housing** and a reinforced **diaphragm assembly**, this part is engineered to withstand the demands of high-performance driving while resisting corrosion and wear over extended use. The accumulator s **vacuum latch mechanism** allows it to store and release vacuum efficiently, compensating for fluctuations in engine vacuum particularly during idle or low-engine-load conditions thereby preventing brake pedal pulsation and enhancing overall braking efficiency. This component is a direct-fit replacement for the original equipment (OEM) part, ensuring seamless integration with the **Mercedes-Benz W140 s brake booster system**, including compatibility with the **E38 engine family** and associated vacuum hoses. Whether restoring a classic luxury sedan or maintaining a well-preserved collector s vehicle, this latch vacuum accumulator guarantees reliable operation, contributing to the iconic driving experience synonymous with Mercedes-Benz s legendary engineering.

### **Pros and Cons of Buying a Mercedes-Benz W140 S500 (1992 1999) with a Vacuum Accumulator (Latch Vacuum Accumulator)**

#### **Pros**

1. **Classic Luxury and Prestige**

The W140 S500 is an iconic luxury sedan from the early 1990s, known for its refined German engineering, upscale interior, and timeless design. Owning one carries prestige and appeals to enthusiasts who appreciate Mercedes-Benz s legacy.

2. **Strong Engine and Performance**

The **5.0L V8 (M117) engine** produces **282 313 hp** (depending on model year) and **352 362 lb-ft of torque**, delivering smooth, powerful performance for its era. The **5-speed automatic transmission** (or optional 6-speed in later models) is well-matched to the engine, providing a comfortable yet engaging drive.

3. **Reliability (With Proper Maintenance)**

The W140 is generally **more reliable than later W140 models** (such as the E500) because it lacks some of the more complex electronics and turbocharging found in later iterations. With **regular maintenance**, the engine, suspension, and transmission can last **200,000 miles**.

4. **Classic Luxury Features**

- **Hand-stitched leather seats** (often with power adjustments)

- **Wood or aluminum trim options** (interior)

- **Heated/ventilated seats** (on higher trims)

- **AM/FM stereo with cassette or CD player** (early models)

- **Power windows, locks, and mirrors**

- **Cruise control and climate control**

The interior remains **comfortable and well-built** compared to many modern alternatives.

5. **Strong Resale Value for Classics**

Well-maintained W140 S500s hold their value better than many contemporary luxury cars, especially in the **classic car market**. Restored examples can appreciate significantly over time.

6. **Modding and Tuning Potential**

- **Intake/exhaust upgrades** (for better airflow)

- **ECU tuning** (to increase power and torque)

- **Upgraded suspension** (for a firmer, more responsive ride)

- **Performance brakes** (for better stopping power)

- **Cosmetic restorations** (bodywork, paint, interior refresh)

7. **Vacuum Accumulator (Latch Vacuum Accumulator) Advantage**

- The **vacuum accumulator** (instead of a modern brake booster) is **simpler and more durable** than electronic brake systems in some modern cars.

- **Easier to diagnose and repair** than hydraulic or electronic brake systems.

- **Less prone to failure** if maintained properly (though it does require occasional vacuum pump checks).

8. **Lower Running Costs (Compared to Modern Luxury Cars)**

- **Fuel efficiency** is ** 12 15 MPG highway** (better than many modern SUVs).

- **Parts are widely available** (though some may require sourcing from specialty dealers).

- **No complex hybrid/electric systems** to worry about.

---

#### **Cons**

1. **Aging Mechanical Components**

- **Suspension wear** (shocks, struts, bushings) is common after **100,000 miles**.

- **Rust** (especially in the **floor pans, rocker panels, and rear quarter panels**) is a major concern, particularly in **snowy or coastal climates**.

- **Timing belt** (if not replaced) can cause **catastrophic engine failure** **must be done every 60,000 100,000 miles**.

- **Water pump and thermostat** failures are frequent and can lead to **overheating**.

2. **Electrical and Computer Issues**

- **Early models (1992 1994)** have **basic electronics** but can suffer from **faulty sensors, wiring harness failures, and fuse box issues**.

- **Later models (1995 1999)** introduce **more complex body control modules (BCM) and anti-lock braking systems (ABS)**, which can be **expensive to diagnose and repair**.

- **Infotainment system** is **outdated by modern standards** (no Bluetooth, USB, or advanced navigation).

3. **Transmission Problems**

- The **5-speed automatic (5G-Tronic)** is **reliable but can develop slipping or rough shifting** over time.

- **6-speed models (1997 1999)** are **more refined** but still require **fluid changes and occasional rebuilds**.

- **Manual transmission models** (if available) are **less common and may have syncro issues**.

4. **Brake System Limitations**

- The **vacuum-assisted brake system** is **less responsive than modern hydraulic or electronic systems**.

- **Brake pads and rotors** wear out **faster than in modern cars**, especially if the car is driven hard.

- **Rear drum brakes** (on some models) can be **less effective in wet conditions**.

5. **High Maintenance Costs**

- **Labor costs** for Mercedes-Benz are **expensive**, especially at dealerships.

- **Specialty parts** (e.g., **vacuum pumps, timing belts, suspension components**) can be **costly** if not sourced from a reputable dealer or aftermarket supplier.

- **Engine rebuilds** (if needed) can run **$5,000 $10,000 **, depending on labor and parts.

6. **Safety Concerns**

- **No modern safety features** (no **airbags beyond the driver/passenger front**, no **stability control, traction control, or advanced crash structures**).

- **Rear visibility is poor** (smaller windows compared to modern sedans).

- **No modern crash safety ratings** older Mercedes-Benzes **do not meet today s safety standards**.

7. **Fuel and Emissions Compliance**

- **Modern fuel standards** mean **lead-free gasoline is required** (some older cars may have **lead-based fuel system components** that need replacement).

- **Smog checks** (in some states) can be **difficult to pass** due to **aging emissions systems**.

8. **Driving Experience Limitations**

- **Poor fuel economy** ( 12 15 MPG highway) makes long-distance driving **more expensive**.

- **Ride comfort** is **softer than modern luxury cars**, which can feel **less engaging** for drivers used to sportier handling.

- **No modern driver aids** (no adaptive cruise, lane assist, etc.).

9. **Parts Availability and Scarcity**

- While **common parts are still available**, **rare or discontinued components** (e.g., **specific vacuum pump models, wiring harnesses**) can be **hard to find**.

- **Dealership support** may be **limited** compared to newer models, forcing owners to rely on **aftermarket or specialty shops**.

10. **Environmental and Legal Issues**

- **No modern emissions compliance** some states may **restrict or ban** older cars from highways.

- **Insurance costs** can be **higher** than modern equivalents due to **replacement part costs**.

---

### **Conclusion**

Buying a **Mercedes-Benz W140 S500 (1992 1999) with a vacuum accumulator** is a **great choice for enthusiasts who appreciate classic luxury, mechanical reliability, and modding potential**. However, it requires **significant upkeep, higher maintenance costs, and a willingness to deal with aging components**.

**Luxury collectors** who want a **well-built, iconic Mercedes**.

**Enthusiasts who enjoy restoring and modifying** their vehicles.

**Owners who prioritize **character and driving experience** over modern convenience.

**Those who can afford **regular maintenance and occasional repairs**.

**Daily drivers** who want **low maintenance and modern safety features**.

**Budget-conscious buyers** who cannot afford **unpredictable repair costs**.

**Owners in harsh climates** (rust and corrosion will be a major issue).

**Those who dislike **manual maintenance tasks** (timing belt, suspension, electrical diagnostics).

---

### **Final Recommendation**

**If you are an experienced car owner with mechanical knowledge, a budget for maintenance, and a passion for classic luxury, the W140 S500 is an excellent purchase.** However, **expect to spend $10,000 $20,000 annually on maintenance** if you want to keep it running reliably.

1. **Buy from a reputable seller** (preferably with **full service records**).

2. **Get a pre-purchase inspection (PPI) from a Mercedes specialist**.

3. **Budget for immediate repairs** (rust, suspension, brakes, electrical).

4. **Plan for long-term maintenance**

Details:

Please match part number to ensure fitment. This part may fit one or all of the described vehicles. Fitment and Compatibility. All electronic items are tested before being listed.

As a result of it being used part, the item may show light scuffs, scratches, or other imperfections. All of the parts are tested either before or after removal from vehicle. Shipping prices for ground apply only to the continental states of USA.

part #: 1407500490 prices

• $29.70-$48.00

specifications carlockiio:

• for models: W140, S500, 500sec, 600sec
• for makes: Mercedes
• for years: 1992-1999
• mpn: 1407500490
• country of origin: Germany
• remote controls: Central Locking System
• ipn: 1407500790
• type: Vacuume Accumulator
• features: Easy Installation
• finish: Oem
• fitment type: Direct Replacement
• placement on vehicle: Rear
• manufacturer warranty: 90 Day

general carlockiio:

• Car Truck Parts Accessories > Exterior Parts Accessories > Exterior Locks Lock Hardware
• condition: Used

payments carlockiio:

• money order
• credit card: Discover
• wallet: Apple-pay
• other

shipping carlockiio:

• carrier: USPS
• transit: 3-7 Days
• cost: $15.00
• class: Expedited
• service: USPS Priority Mail
• type: Fixed

returns carlockiio:

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

seller carlockiio:

• # reviews: 10775
• rating: 99.8%
• city: Lincoln, California

offer carlockiio:

• sold: 0
• quantity: 1
• best offers: True
• started: March 25, 2026
• options: Ship-to-home
• availability: In Stock

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