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  3. PORSCHE 99655113103

PORSCHE 99655113103 Convertible Brake Booster Cover 199.PO1X01 966 3.4L

fits make: Porsche. year: 2001–2005.

99655113103 Porsche 199.po1x01 2001-2005 911 Convertible 966 3.4l Brake Booster Cover

( Part Type: Cover Brake ), ( Conditions Options: Brake Booster Trunk Cove ), ( Genuine Oem: Yes ), ( Ipn: 199.po1x01 ), ( Descriptionpartcondition: 2001-2005 Porsche 911 Convertible 966 3.6l Brake Booster Cover 99 ), ( Manufacturer Warranty: 60 Day ), ( Country Of Origin: Germany )

Review PORSCHE Convertible 966 3.4l Brake Booster Cover fits 911 2001–2005

The **Porsche 911 (996) 3.4L Convertible Brake Booster Cover (Part Number: 99655113103)** is a meticulously engineered component designed to complement the iconic 1997 2005 911 Cabriolet s braking system while maintaining the vehicle s signature blend of performance and elegance. Crafted from high-quality, durable materials, this brake booster cover is engineered to fit seamlessly over the brake booster assembly, ensuring optimal functionality while preserving the car s aerodynamic efficiency. The cover is designed to shield the booster from environmental contaminants such as dust, moisture, and road debris, thereby extending the lifespan of the internal components and reducing the risk of premature wear or failure. Its precise fitment is critical for maintaining the 996 s legendary braking responsiveness, particularly in high-performance driving scenarios where consistent pedal feel and hydraulic efficiency are paramount.

Beyond its practical purpose, this brake booster cover contributes to the vehicle s refined aesthetic, blending seamlessly with the 911 s underbody design. The material used is both robust and lightweight, ensuring it does not compromise the car s weight distribution or handling dynamics. For enthusiasts and restorers seeking to maintain or restore their 996 Cabriolet to factory specifications, this part is an essential component, as it aligns with Porsche s original engineering standards. Whether installed during routine maintenance or as part of a comprehensive overhaul, the 99655113103 brake booster cover ensures that the braking system operates with the same precision and reliability that Porsche drivers have come to expect from the legendary 911. Its inclusion in a service or restoration project underscores a commitment to authenticity and performance, reinforcing the car s status as a timeless masterpiece of automotive engineering.

### **Pros and Cons of Buying a Porsche 911 (996) Convertible (2001 2005, 3.4L, 966, Part Number: 99655113103 Brake Booster Cover)**

#### **Pros**

1. **Classic 911 Design** The 996 generation retains the iconic 911 silhouette with a more modern, angular front end compared to the 993. The convertible variant adds a sporty, open-air driving experience.

2. **Strong Engine (3.4L Flat-6)** The 3.4L engine (in the base and Carrera models) produces **300 325 hp** (depending on year and tuning), providing a balanced mix of power and efficiency. It s reliable if maintained properly and offers a smooth, linear power delivery.

3. **Convertible Top Quality** The soft-top mechanism in the 996 is generally well-built, though not as refined as later models. A well-maintained top can last for years with proper care (regular lubrication, no sharp objects left inside).

4. **Good Handling & Driving Dynamics** The 911 s rear-wheel-drive layout, wide track, and precise steering make it a joy to drive, especially on winding roads. The 996 is slightly heavier than the 993 but still nimble for a sports car.

5. **Aftermarket & Tuning Potential** The 3.4L engine is a favorite for tuning, with options ranging from mild upgrades (intake/exhaust) to full turbocharged builds. The 996 chassis is also popular for suspension and brake modifications.

6. **Lower Cost of Ownership (Compared to Later Models)** Parts are widely available, and labor costs are reasonable. While not as cheap as a used Civic, it s far more affordable than a modern 911.

7. **Collectibility & Nostalgia** The 996 is a transitional model between the classic 993 and the more refined 997. Early examples (especially 2001 2003) are becoming harder to find, adding to their appeal for enthusiasts.

8. **Decent Fuel Economy (For a Porsche)** The 3.4L naturally aspirated engine gets around **14 16 MPG city / 20 22 MPG highway**, which is reasonable for a V6 sports car of its era.

---

#### **Cons**

1. **Reliability Concerns (If Neglected)** The 3.4L engine is robust but has known issues if not properly maintained:

- **Oil leaks** (valve cover gaskets, oil filter housing gasket)

- **Rod bearing wear** (common in high-mileage examples, often requiring a **$5,000 rebuild**)

- **Timing chain stretch** (can lead to valve float, requiring a timing chain replacement)

- **Water pump failures** (often linked to the thermostat housing, which can flood the engine if it leaks)

2. **Convertible Top Issues** The soft-top is prone to:

- **Rust** (especially in the frame and tracks)

- **Stiff or sticky mechanisms** (requiring regular lubrication)

- **Leaks** (if the seals degrade, water can enter the cabin)

3. **Poor Sound Insulation & Wind Noise** The 996 convertible is notorious for **loud wind noise at highway speeds** and poor cabin quietness compared to later models. The top doesn t seal as well as modern convertibles.

4. **Outdated Safety Features** No stability control (ESC), basic airbags, and older seat belts. The driving position is also less ergonomic than later 911s.

5. **Rust Issues (Especially in Older Examples)** Many 996s (especially pre-2003) suffer from **floor pan rust**, suspension rust, and frame corrosion. A thorough inspection is **mandatory**.

6. **High Maintenance Costs** While parts are cheap, labor can add up, especially for engine work. A full rebuild or major overhaul (e.g., rod bearings) is expensive.

7. **Depreciation & Resale Value** The 996 is not a highly sought-after model compared to the 993 or 997. While it holds value better than most Porsches, it won t appreciate as much as a classic or a newer model.

8. **Driving Experience Limitations** The 3.4L is less powerful than later 911 engines (e.g., the 3.6L or turbocharged models). The suspension is firmer than modern comfort-oriented setups, which may feel harsh to some.

9. **Electrical Gremlins** The 996 has a reputation for **electrical issues**, including faulty sensors, intermittent problems, and poor wiring quality in some areas.

10. **Limited Modern Tech** No Bluetooth, minimal infotainment, and basic climate control compared to today s standards.

---

### **Key Considerations Before Buying**

1. **Service History is Critical** Look for a car with **full service records**, especially for:

- Oil changes (synthetic oil recommended)

- Timing chain inspection/replacement (if over 100k miles)

- Rod bearing checks (listen for knocking)

- Rust inspection (undercarriage, wheel wells, frame)

2. **Test Drive for Common Issues**

- **Engine noise** (rod knock, valve float)

- **Top operation** (smooth retraction, no leaks)

- **Suspension** (no clunks, proper damping)

- **Brakes** (check for brake booster cover wear, pad thickness)

3. **Budget for Potential Repairs**

- **Minor issues** (top seals, oil leaks) $500 $2,000

- **Major engine work** (rod bearings, timing chain) $5,000 $10,000

- **Rust repairs** $1,000 $5,000 depending on extent

4. **Inspection by a Porsche Specialist** A pre-purchase inspection (PPI) by someone familiar with the 996 is **highly recommended** to avoid costly surprises.

5. **Convertible-Specific Checks**

- **Top tracks** (no excessive wear or rust)

- **Seals** (check for cracks or dryness)

- **Retraction mechanism** (should be smooth, not jerky)

---

### **Conclusion & Recommendation**

#### **Who Should Buy This Car?**

- **Enthusiasts who prioritize driving dynamics and tuning potential** over modern comforts.

- **Owners who enjoy the open-air experience** and don t mind wind noise.

- **Those willing to invest time and money in maintenance** to keep it running reliably.

- **Collectors or those who appreciate the 996 s transitional role** between the 993 and 997.

- **Budget-conscious buyers** who want a Porsche without paying 997/991 prices.

#### **Who Should Avoid It?**

- **First-time Porsche owners** (the 996 is more demanding than a 911 Carrera 2 or 3).

- **Those who prioritize comfort, tech, or modern safety** over classic driving.

- **Buyers who want a "plug-and-play" car** with minimal upkeep.

- **People who dislike wind noise or poor sound insulation.**

#### **Final Recommendation**

If you find a **well-documented, low-mileage (under 80k miles), rust-free 996 convertible with a clean service history**, it can be a **fantastic project car or daily driver** for the right owner. However, **budget at least $10,000 $15,000 for repairs** if it s not already in excellent condition.

**Best Approach:**

- **Buy from a reputable dealer or private seller with full documentation.**

- **Get a PPI from a Porsche specialist.**

- **Be prepared for ongoing maintenance** (oil changes, top care, rust prevention).

- **Consider a 993 or 997 if you want a more refined, lower-maintenance experience.**

The 996 convertible is a **great car for the right person** one who loves Porsches, isn t afraid of work, and appreciates the raw driving experience. But it s **not a "set it and forget it" purchase** like a modern sports car.

Details:

All electronic items are tested before being listed. Shipping prices for ground apply only to the continental states of USA. All of the parts are tested either before or after removal from vehicle. Please match part number to ensure fitment.

Fitment and Compatibility. As a result of it being used part, the item may show light scuffs, scratches, or other imperfections. This part may fit one or all of the described vehicles.

part #: 99655113103 prices

  • $55.00-$120.00

specifications cartrimmouldings:

  • for makes: Porsche
  • for years: 2001-2005
  • part type: Cover Brake
  • conditions options: Brake Booster Trunk Cove
  • genuine oem: Yes
  • ipn: 199.po1x01
  • descriptionpartcondition: 2001-2005 Porsche 911 Convertible 966 3.6l Brake Booster Cover 99
  • manufacturer warranty: 60 Day
  • country of origin: Germany

shipping cartrimmouldings:

  • type: Fixed
  • class: Standard
  • service: USPS Ground Advantage
  • cost: $10.00
  • carrier: USPS
  • transit: 5-8 Days

seller cartrimmouldings:

  • # reviews: 11927
  • city: Lincoln, California
  • rating: 99.7%

returns cartrimmouldings:

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

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offer cartrimmouldings:

  • best offers: True
  • availability: In Stock
  • quantity: 1
  • options: Ship-to-home
  • started: May 22, 2026
  • sold: 0

general cartrimmouldings:

  • Car Truck Parts Accessories > Exterior Parts Accessories > Body Moldings Trims
  • condition: Used
for makes: porsche, for years: 2001-2005, part type: cover brake, conditions options: brake booster trunk cove, genuine oem: yes, descriptionpartcondition: 2001-2005 porsche 911 convertible 966 3.6l brake booster cover 99, manufacturer warranty: 60 day, country of origin: germany,
manufacturer: porsche, category: auto parts > car truck parts accessories > exterior parts accessories > body moldings trims, sku: 15625420387353722,
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