PORSCHE 9481041054R Engine Right Cylinder Head 306-50258 957 4.8L

( Manufacturer Part Number: 9481041054R ), ( Part Type: Engine Cylinder Head ), ( Donor Year: 2011 ), ( Donor Model: Cayenne ), ( Ipn: 306-50258 ), ( Miles: 147, 436 ), ( Tag: V51768 )

Review PORSCHE 957 4.8l Non Engine Right Cylinder Head fits CAYENNE TURBO 2008–2010

The **Porsche 9481041054R** cylinder head for the **957 4.8L Turbo engine** found in the **2008 2010 Cayenne (S63 model)** represents a critical and highly specialized component designed for maximum performance, reliability, and precision engineering. This aftermarket replacement part is meticulously crafted to replicate the original factory specifications of the **right-hand cylinder head** for the **957 4.8L twin-turbocharged V8**, ensuring seamless integration with the engine s high-output demands. Engineered from high-grade cast aluminum, the cylinder head features an advanced valve train system, including **intake and exhaust ports optimized for airflow efficiency**, allowing for superior breathing and enhanced power delivery. The design incorporates **precision-machined combustion chambers** and **high-lift camshaft profiles**, which work in tandem with the engine s **forced induction system** to maximize torque and horsepower while maintaining durability under extreme loads. This cylinder head is compatible with **Porsche s S63 engine management system**, ensuring proper calibration and performance tuning when paired with supporting components like upgraded turbos, intercoolers, and fueling upgrades. Whether used for **restoration projects, high-performance modifications, or as a direct replacement for a worn-out original part**, this cylinder head exemplifies Porsche s commitment to engineering excellence, offering a balance of **performance, longevity, and authenticity** for enthusiasts seeking to push their Cayenne s limits. Built to exacting standards, it is a testament to the precision and craftsmanship required to maintain the legendary performance of one of Porsche s most powerful and sought-after engines.

### **Pros and Cons of Buying a Porsche Cayenne (9A, 2008 2010) with a 957 4.8L Turbo Engine (Right Cylinder Head)**

#### **Pros**

1. **Strong Engine Performance**

The 9A Cayenne s 4.8L V8 (957 engine) produces **450 500 horsepower** (depending on tuning and modifications) with its twin-turbo setup. It delivers strong acceleration, towing capacity, and a robust low-end torque curve, making it suitable for both daily driving and spirited use.

2. **Proven Reliability (When Maintained Properly)**

The 957 engine is a mature design (shared with the 997 GT3 and 996 911 Turbo) and has a strong aftermarket support base. With regular maintenance (oil changes, valve adjustments, turbo inspections), it can last **200,000 miles** without major issues.

3. **High Resale Value for a Luxury SUV**

Porsche Cayennes hold their value better than most luxury SUVs, especially well-maintained examples. A 2008 2010 9A with a clean title and service records can still fetch a decent price, even after years of ownership.

4. **Luxury and Comfort**

The Cayenne offers a spacious, high-end interior with premium materials, advanced infotainment (if equipped with the optional navigation system), and a smooth ride (especially in the Comfort mode). It s one of the most comfortable Porsches for daily use.

5. **Strong Aftermarket Support**

- **Performance parts** (turbo upgrades, exhaust, suspension kits)

- **Modifications** (ECU tuning, cold air intakes, upgraded intercoolers)

- **Reliability upgrades** (stainless steel exhaust, upgraded oil coolers)

- **Aesthetic upgrades** (wheels, body kits, interior enhancements)

6. **Good Towing and Off-Road Capability**

With the right setup (optional all-wheel drive, traction control settings), the Cayenne can tow **up to 7,700 lbs** (with a trailer brake controller) and handle light off-road conditions better than most luxury SUVs.

7. **Classic Porsche Driving Dynamics**

Despite being an SUV, the Cayenne retains Porsche s **precise steering, balanced handling, and engaging driving experience**, especially in Sport mode. It feels more like a car than most large SUVs.

8. **Optional Performance Upgrades**

- **PDK Transmission (2009 models)** A massive upgrade over the standard automatic, offering near-instant gear shifts.

- **Turbocharged V8 (957)** More power than the naturally aspirated 6.0L V12 (9A2) in earlier models.

- **Optional 4Motion AWD** Better traction in all conditions.

9. **Lower Cost Than a New Porsche SUV**

Buying a used 9A Cayenne is significantly cheaper than a new Macan or Taycan, offering similar luxury and performance at a fraction of the price.

---

#### **Cons**

1. **High Maintenance Costs**

Porsche parts and labor are **expensive**, especially for specialized components like turbos, suspension parts, and electrical systems. Budget for:

- **Oil changes** ($150 $300 every 10,000 15,000 miles)

- **Valve adjustments** (every 60,000 75,000 miles, $500 $800)

- **Turbo inspections/replacements** (every 80,000 100,000 miles, $1,500 $3,000 each)

- **Suspension components** (shocks, bushings, control arms wear out faster than expected)

2. **Common Reliability Issues**

- **Turbocharger Failures** The 957 turbos are known for **carbon buildup and oil starvation**, leading to premature failure if not maintained properly.

- **Water Pump Failures** The aluminum water pump can crack, leading to coolant leaks and engine damage.

- **Transmission Issues (Pre-PDK Models)** The standard automatic transmission (ZF 6HP21) can be **sluggish and unreliable** compared to the PDK.

- **Electrical Gremlins** The Cayenne has a reputation for **random electrical issues** (window regulators, sensors, infotainment glitches).

- **Suspension Wear** The air suspension (if equipped) can develop leaks, and solid axles wear out faster than expected.

3. **Fuel Economy is Poor**

The 4.8L turbo V8 gets **around 12 15 MPG in the city and 16 18 MPG on the highway** far worse than modern hybrids or diesel SUVs. Fuel costs add up quickly.

4. **Depreciation is Steady (But Not Severe)**

While the Cayenne holds value better than most SUVs, it still loses ** 15 20% per year** in its first few years. A 2008 model will depreciate significantly by 2024.

5. **Size and Practicality Limitations**

- **Fuel Tank Capacity** Only **23 gallons**, meaning frequent refueling on long trips.

- **Towing Limits** While capable, it s not as strong as a full-size truck.

- **Rear Seat Space** The third row is **cramped and impractical** for adults; the Cayenne is best suited for 2 3 passengers.

- **Parking Difficulty** At **19.6 ft long**, it s larger than most sedans and can be tricky in tight spaces.

6. **Resale Value Drops After 100,000 Miles**

A Cayenne with **high mileage (150,000 )** will see a **sharp drop in value**, especially if maintenance records are missing. Buyers often prefer **lower-mileage examples** with full service history.

7. **Noise and Vibration Issues**

- **Wind Noise** The Cayenne is **loud at highway speeds**, especially with the roof open.

- **Engine Noise** The turbo V8 is **loud in the cabin**, though sound insulation improves in later models.

- **Road Noise** The suspension is soft for comfort, leading to more road noise than a sportier Porsche.

8. **Recall and Warranty Issues**

- **Airbag defects** (2008 2009)

- **Fuel pump failures** (2009 2010)

- **Transmission issues** (pre-PDK models)

- **Extended warranties are expensive** ( $3,000 $5,000 for full coverage).

9. **Parts Availability Can Be Difficult**

- **Discontinued parts** (e.g., specific sensors, wiring harnesses) may require **long lead times** or aftermarket replacements.

- **Dealer vs. Independent Mechanic Costs** Dealer labor is **2 3x more expensive** than independent Porsche specialists.

10. **Not as Exclusive as Other Porsches**

- The Cayenne is **less prestigious** than a 911, Boxster, or 718 Cayman in the Porsche world.

- It s **more of a luxury SUV** than a "true" Porsche, which may disappoint purists.

---

### **Ending Conclusion**

**A powerful, engaging luxury SUV** with strong performance and Porsche driving dynamics.

**A well-supported engine** that can be tuned for extra power.

**A comfortable, spacious interior** for daily use.

**Good resale value** compared to other luxury SUVs.

**High maintenance costs** that can eat into savings.

**Potential reliability issues** if not properly maintained.

**Poor fuel economy** and high operating costs.

**Depreciation** over time, especially after 100,000 miles.

- **Enthusiasts** who prioritize driving fun over fuel efficiency.

- **Owners who can afford** regular maintenance and potential repairs.

- **Those who want a luxury SUV** with Porsche s brand prestige.

- **Buyers who plan to keep it for 5 7 years** (not as a long-term investment).

- **Budget-conscious buyers** who can t afford Porsche-level maintenance.

- **Families needing a practical, high-mileage vehicle**.

- **Those who prioritize fuel efficiency and low operating costs**.

- **Investors looking for rapid appreciation** (depreciation

Details:

Left-Hand Drive Vehicles. Emissions standards, side of road vehicles drive on, etc. Weather patterns cold vs. The more actions option. Initial testing consists of starting the vehicle, running code scans, road if safe to do so, and completing an extensive inspection checklist.

The pictures are the ACTUAL PICTURES OF THE ITEM FOR SALE. On return this item. There may be normal signs of wear and tear present such as scratches, scuffs, dirt, etc. We subscribe to fitment software and include all relevant useful information in our listings whenever possible.

Made for USA Vehicles: All vehicles and parts are manufactured to be sold the market. SHIPPING DEALS: Review our shipping details before you purchase. And cultural preferences income levels, family sizes, typical modes of transportation, etc. After items are removed and cleaned they inspected one final time before posting.

Item has been fully inspected and tested found to be in good working order.

part #: 9481041054r prices

• $449.23-$569.99

specifications cylinderheapar:

• for models: Turbo, Cayenne
• for makes: Porsche
• for years: 2008-2010
• mpn: 9481041054r
• part type: Engine Cylinder Head
• donor year: 2011
• donor model: Cayenne
• ipn: 306-50258
• miles: 147, 436
• tag: V51768

returns cylinderheapar:

• policy: Returns Accepted
• time: 60 Days
• paid by: Seller

shipping cylinderheapar:

• service: Standard
• class: Standard
• type: Fixed
• cost: $0.00
• transit: 3-7 Days

seller cylinderheapar:

• rating: 99.9%
• city: Oroville, California
• # reviews: 29490

general cylinderheapar:

• condition: Used
• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads

offer cylinderheapar:

• started: March 30, 2026
• quantity: 1
• options: Ship-to-home
• sold: 0
• availability: In Stock

payments cylinderheapar:

• other
• wallet: Apple-pay
• credit card: Mastercard

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