PORSCHE 99134700584 Steering Rack

( Manufacturer Part Number: 99134700584 ), ( Part Type: Steering Rack ), ( Country Of Origin: Germany ), ( Location: Ka-060 )

Review PORSCHE 991 Steering Rack fits 911 2015

The **Porsche 991.3 Steering Rack (Part Number: 9134700584)** for the **2015 911 (991 generation)** represents a critical component of the vehicle s precision handling and driver engagement, meticulously engineered to deliver the legendary Porsche driving experience. This high-performance steering rack is a direct replacement for the original equipment (OEM) unit, designed to maintain the 911 s razor-sharp steering response, minimal play, and effortless feedback hallmarks of Porsche s commitment to performance and refinement. Crafted from durable materials and built to exacting standards, the rack features a robust hydraulic or electric (depending on model variant) power assist system, ensuring smooth, predictable steering even at high speeds or during aggressive cornering. The internal design incorporates precision-machined components, including a recirculating ball screw mechanism, which translates driver input into precise wheel movement with minimal lag, enhancing both sportiness and comfort. This steering rack is fully compatible with the 991.3 s updated chassis dynamics, including the optional **PDK transmission** and **adaptive dampening systems**, ensuring seamless integration with the vehicle s advanced driver aids. Whether used for routine maintenance or as part of a performance upgrade, this steering rack upholds Porsche s reputation for engineering excellence, offering reliability, longevity, and the unmistakable feel of a true 911. For enthusiasts seeking to restore or enhance their 911 s handling, this part is an essential component that bridges the gap between driver intent and vehicle response, embodying the spirit of Porsche s engineering philosophy.

### **Pros and Cons of Buying a 2015 Porsche 911 (991) with Steering Rack Part Number 34700584**

#### **Pros**

1. **Reliability of the 991 Platform**

The 2015 Porsche 911 (991) is a well-established model with a proven track record. The 991 generation introduced significant improvements over the 997, including better handling, a more refined interior, and improved reliability in key components like the engine and transmission. Many owners report fewer major issues compared to earlier 911 models.

2. **Steering Rack (34700584) Compatibility and Availability**

The steering rack part number **34700584** is a common and widely available component for the 991 911, particularly for the **991.1 (2012 2014) and 991.2 (2015 2019) facelift models**. Porsche dealers and aftermarket suppliers stock this part, making repairs straightforward. The rack is known for durability, though wear can occur over time, especially in high-mileage examples.

3. **Performance and Driving Dynamics**

The 2015 911 retains the **9A0 engine** (in base and Turbo models) or the **9A1 engine** (in Carrera S and Turbo S), which are powerful and responsive. The 991 s rear-wheel-drive layout, adaptive suspension, and precise steering make it a driver s car. The **PDK dual-clutch transmission** (in automatic models) is smooth and efficient, though it requires proper maintenance.

4. **Resale Value and Brand Prestige**

Porsche 911s hold their value well, especially well-maintained examples. The 991 generation is highly sought after, and even used models retain strong resale potential. The brand s prestige ensures a dedicated buyer pool, which can be advantageous if you plan to sell later.

5. **Aftermarket Support and Customization**

The 991 is a favorite for modifications, with extensive aftermarket support for exhausts, suspension tuning, engine upgrades, and interior enhancements. Parts like the steering rack can be upgraded or replaced with aftermarket alternatives (e.g., **Porsche Performance Parts or BBS**) if needed.

6. **Lower Maintenance Costs Compared to Earlier Models**

While Porsche maintenance is expensive, the 991 generation is more refined than the 997, with fewer chronic issues (e.g., less oil consumption in the 9A0 engine compared to the 997 s 9A1 in some cases). The **steering rack itself is less prone to failure** than earlier 911 models, which sometimes suffered from rack leaks or binding.

7. **Technology and Comfort Upgrades**

The 2015 model year introduced **Porsche Communication Management (PCM) 2.0**, which improved infotainment and connectivity. The **adaptive damping system** and **Porsche Active Suspension Management (PASM)** provide a balance between comfort and sportiness, making it suitable for both track and daily driving.

---

#### **Cons**

1. **High Maintenance and Repair Costs**

Porsche is an expensive car to own, even in used form. Routine maintenance (oil changes, brake jobs, suspension work) adds up quickly. The **steering rack, if failing, can be costly to replace** though the 34700584 is reasonably priced compared to other high-end parts. Labor costs at dealerships are also significant.

2. **Potential Steering Rack Issues**

- **Excessive play or looseness** in steering.

- **Whining or grinding noises** when turning.

- **Leaking power steering fluid** (if hydraulic).

- **Stiffness or resistance** in steering.

If the rack is already showing signs of wear, replacing it is a wise investment to avoid further damage (e.g., to the steering column or tie rods).

3. **Engine and Transmission Considerations**

- **Base 911 (9A0) engines** are robust but can develop **carbon buildup** if not maintained properly. Turbo models (especially the **9A1 in Carrera S/Turbo S**) are more complex and require **regular oil changes and cooling system checks** to prevent issues like **turbo lag or oil leaks**.

- **PDK transmission failures** (if equipped) can be catastrophic and expensive. Some owners report **clutch plate wear** or **electrical gremlins** in the transmission control unit.

4. **Depreciation and Hidden Costs**

- **Exhaust system failures** (common in Turbo models due to heat).

- **Brake system upgrades** (carbon-ceramic brakes are expensive).

- **Suspension wear** (shocks, bushings, and struts degrade over time).

- **Electrical issues** (sensors, infotainment glitches).

5. **Insurance and Storage Costs**

Porsche insurance is **one of the most expensive** for high-performance cars. If the car is stored long-term (e.g., in a climate-controlled garage), costs add up. Some owners also face **higher theft risks** due to the car s desirability.

6. **Limited Fuel Efficiency**

The 911 is not known for its economy. Even the base model averages **12 15 MPG (city/highway)**, while Turbo models dip to **10 13 MPG**. High fuel costs can be a drawback for daily drivers.

7. **Potential for Overheating (Especially Turbo Models)**

The **9A1 engine in Turbo models** is prone to **overheating** if the cooling system is neglected. **Radiator leaks, thermostat failures, or coolant pump issues** can lead to engine damage if not addressed promptly.

---

### **Conclusion**

Buying a **2015 Porsche 911 (991) with steering rack 34700584** is a strong choice if you prioritize **performance, driving enjoyment, and long-term reliability** provided you are prepared for the **higher ownership costs**. The **steering rack itself is a common and well-supported part**, but its condition should be thoroughly inspected before purchase. If the rack is worn, replacing it is a **necessary and cost-effective** fix to avoid more serious steering issues.

This car is **ideal for enthusiasts who value handling, acceleration, and Porsche s legacy**, but it is **not a practical daily driver for those on a tight budget**. If maintained properly, it will remain a **desirable and capable machine** for years to come. However, **budget for regular maintenance, potential upgrades, and unexpected repairs** to avoid financial strain.

---

### **Recommendation**

1. **Inspect the Steering Rack Thoroughly**

- Check for **leaks, play, or unusual noises** during a test drive.

- Verify that the **power steering fluid level is correct** and there are no visible signs of wear.

- If the rack is failing, **budget for replacement** (typically **$1,500 $2,500 installed**, depending on labor rates).

2. **Get a Pre-Purchase Inspection (PPI)**

- A **Porsche specialist mechanic** should inspect the **engine, transmission, suspension, brakes, and electrical systems**.

- Pay special attention to **oil consumption, turbo health (if applicable), and cooling system integrity**.

3. **Consider a Well-Maintained Example**

- Look for a **911 with full service records**, especially for **oil changes, timing belt (if applicable), and cooling system flushes**.

- **Turbo models require extra scrutiny** check for **exhaust leaks, intercooler issues, and turbo lag**.

4. **Factor in Long-Term Costs**

- **Annual maintenance budget:** **$3,000 $6,000 ** (depending on mileage and modifications).

- **Insurance:** Expect **$2,000 $4,000 per year** for full coverage.

- **Storage:** **$500 $1,500/year** for a climate-controlled garage.

5. **Decide Between Manual and Automatic**

- **Manual (PDK) transmission** is more engaging but requires **regular clutch maintenance**.

- **PDK automatic** is smoother but **more complex and expensive to repair** if it fails.

6. **Final Verdict**

- **Buy if:** You have the budget for maintenance, love Porsche s driving dynamics, and plan to keep it for **5 years with proper care**.

- **Avoid if:** You need a **low-cost, high-mileage daily driver** or cannot afford unexpected repairs.

A **2015 911 with a sound steering rack and good maintenance history** is a **great purchase for the right owner** just be prepared for the **higher cost of ownership** that comes with the brand.

Details:

This listing is for: 2015 Porsche 911 991 Steering Rack Part number: 991.347.005.84, Used. The quoted shipping prices are within the 48 states only. Please see pictures for details. Good condition.

part #: 99134700584 prices

• $499.00-$1739.43

specifications steragebo:

• for models: 911
• for makes: Porsche
• for years: 2015
• mpn: 99134700584
• part type: Steering Rack
• country of origin: Germany
• location: Ka-060

seller steragebo:

• city: Ontario, California
• rating: 99.9%
• # reviews: 33372

payments steragebo:

• other
• credit card: Discover
• wallet: Paypal

returns steragebo:

• policy: No Returns

shipping steragebo:

• service: Standard
• transit: 4-10 Days
• type: Fixed
• class: Standard
• cost: $99.00

general steragebo:

• Car Truck Parts Accessories > Steering Suspension > Gearboxes, Rack Pinions
• condition: Used

offer steragebo:

• best offers: True
• sold: 0
• options: Ship-to-home
• quantity: 1
• started: May 5, 2026
• availability: In Stock

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