1. Cylinder Heads & Parts Engines Components For Sale
  2. sku: 12076657056608632
  3. VW AUDI 079103373G

GENUINE VW AUDI 079103373G Bbk Cylinder Head Right Passenger 4.2 V8

fits model: B6, B7, S4.

079103373g Genuine Vw Audi B6 B7 S4 4.2 V8 Bbk Cylinder Head Right Passenger

( Brand: Genuine Vw Audi ), ( Manufacturer Part Number: 079103373G ), ( Type: Cylinder Head ), ( Material: Aluminum ), ( Vintage Part: No ), ( Country Of Origin: Germany )

Review GENUINE VW AUDI 4.2 V8 Bbk Cylinder Head Right Passenger fits B6 B7 S4

The **VW Audi 079103373G cylinder head (B6/B7 S4 4.2L V8 BBK, passenger side)** is a precision-engineered component designed to deliver exceptional performance and reliability for the iconic 4.2-liter V8 naturally aspirated engine found in the Audi S4 (B6/B7) and Volkswagen W8 platforms. This high-quality cast aluminum cylinder head, manufactured to strict OEM specifications, features a robust and compact design optimized for efficient airflow and thermal management. The head incorporates a dual overhead camshaft (DOHC) architecture, with each camshaft driving four valves per cylinder two intake and two exhaust via a sophisticated valve train system that ensures precise timing and optimal combustion efficiency. The intake valves are typically forged from high-strength steel or titanium, while the exhaust valves are often constructed from heat-resistant materials like sodium-filled stainless steel to withstand the extreme temperatures generated during high-performance operation. The head is equipped with a **BBK (B6/B7) specific combustion chamber design**, featuring a compact, high-compression layout that maximizes power output while maintaining durability under heavy loads. The **passenger-side head** is distinguished by its unique bolt pattern and mounting orientation, ensuring a perfect fit when paired with the corresponding driver-side counterpart, which is often slightly modified for balance and airflow dynamics.

This cylinder head is engineered to accommodate the **4.2L V8 s high-revving nature**, with a robust valve spring system and advanced valve actuation mechanisms that minimize lift and camshaft wear even under aggressive driving conditions. The head includes **integrated cooling passages** that facilitate efficient heat dissipation, reducing the risk of thermal stress and ensuring consistent performance across a wide range of operating temperatures. Additionally, the **spark plug bores** are precisely machined to accommodate high-performance plugs, such as NGK or Bosch variants, which further enhance ignition reliability and combustion efficiency. The **intake manifold ports** are designed to optimize airflow into the combustion chambers, while the **exhaust ports** are contoured to promote smooth gas flow and reduce backpressure, contributing to a more responsive and efficient engine.

For enthusiasts seeking to restore or upgrade their B6/B7 S4 s 4.2L V8, this cylinder head represents a **direct OEM replacement or a high-quality aftermarket alternative** that maintains the engine s original performance characteristics. Whether used in a stock restoration, a mild tune-up, or as part of a more aggressive build, this component ensures that the engine operates with the same level of precision and power that Audi intended. The **079103373G designation** confirms its compatibility with the **BBK engine family**, which includes the **Audi S4 (B6/B7), Volkswagen W8, and other high-performance applications** from the same era. When paired with a matching **driver-side head (079103373A or equivalent)**, a **high-flow intake manifold**, and a **performance camshaft**, this cylinder head can unlock significant gains in horsepower and torque while maintaining structural integrity. For those pursuing a **full rebuild or a high-performance modification**, this component serves as a critical foundation for achieving the engine s full potential blending OEM heritage with modern engineering to deliver a balance of power, reliability, and durability.

### **Pros and Cons of Buying a VW/Audi 079103373G (B6/B7 S4 4.2L V8 BBK Cylinder Head, Right Passenger Side)**

#### **Pros**

1. **Performance and Reliability (When Maintained Properly)**

- The **4.2L V8 (WR8/WR8A)** in the B6/B7 S4 is a well-regarded engine known for its durability when kept in good condition. With proper maintenance, it can last well over 200,000 miles.

- The **BBK cylinder head** (used in later B6/B7 models) is an improvement over the earlier **WR8A** design, featuring better airflow and reduced oil consumption issues.

- The **S4 s 6-speed manual or Tiptronic transmission** (depending on the model) is smooth and capable of handling the V8 s power effectively.

2. **Strong Aftermarket Support**

- The **4.2L V8** has a large aftermarket presence, meaning parts like **intake manifolds, exhaust headers, and performance chips** are widely available.

- Tuning options (e.g., **MHD, Haltech, or standalone ECU flashing**) can significantly boost power while remaining reliable.

- **Turbocharging potential** exists (though not stock), with aftermarket kits available for those seeking more power.

3. **Classic S4 Appeal and Driving Experience**

- The **B6/B7 S4** is a fan-favorite among enthusiasts, known for its **sharp handling, engaging driving dynamics, and timeless styling**.

- The **BBK head models (post-2003)** often have **better reliability** than earlier WR8A versions, particularly in terms of **oil consumption and valve train durability**.

- The **4.2L V8 s deep, throaty sound** (especially with a tuned exhaust) makes it a standout in the classic sports car segment.

4. **Potential for Restoration and Modification**

- Many **B6/B7 S4s** are sought after for restoration projects, meaning **parts and labor costs** may be more accessible than on rarer models.

- The **BBK head** (if properly rebuilt) can be a **long-term solution**, avoiding the common **WR8A oil consumption and valve float issues**.

- **Cosmetic upgrades** (e.g., **body kits, interior refreshes, or paint**) are relatively straightforward and can significantly increase value.

5. **Resale Value (Among Enthusiasts)**

- Well-maintained **B6/B7 S4s (especially BBK head models)** hold their value better than average due to their **cult following**.

- **Low-mileage examples with service records** can be particularly valuable, especially if they ve been **lightly modified or restored**.

---

#### **Cons**

1. **Common Engine Issues (If Neglected)**

- **Oil consumption** (though less severe in **BBK head models** than in early WR8A engines) can still be an issue if the **valve seals or piston rings** wear out.

- **Carbon buildup** in the **intake valves** (common in high-mileage examples) can reduce performance and require **valve cleaning or replacement**.

- **Rod bearing wear** is a **known long-term failure mode** some engines develop **blue smoke and rough running** if not maintained properly.

2. **Transmission and Drivetrain Wear**

- The **6-speed manual** is durable but can **wear out synchronizers** if shifted aggressively.

- The **Tiptronic (automatic)** is generally reliable but **fluid changes are critical** neglecting this can lead to **slipping or premature failure**.

- **Differential and driveshaft wear** can occur in high-mileage examples, especially if the car was driven hard.

3. **Cost of Maintenance and Repairs**

- **Labor costs** for VW/Audi are **higher than average**, especially for **engine work, transmission service, or suspension repairs**.

- **Replacement parts** (e.g., **BBK cylinder head rebuild kits, rod bearings, or timing chain components**) can be **expensive** if not sourced from a reputable supplier.

- **Electrical gremlins** (common in VW/Audi models) can be **time-consuming to diagnose**, adding to repair costs.

4. **Fuel Economy and Running Costs**

- The **4.2L V8 is thirsty**, averaging **12-14 MPG** in real-world driving **higher than modern turbocharged engines**.

- **Insurance costs** can be **moderate to high**, depending on the region and modification level.

- **Tires and brakes** wear faster due to the **V8 s weight and power**, increasing maintenance expenses.

5. **Potential for Hidden Problems**

- **Water pump failures** (especially in **BBK head models**) can lead to **overheating and head gasket issues** if not addressed early.

- **Suspension wear** (e.g., **ball joints, bushings, or struts**) is common in high-mileage examples and can affect handling.

- **Corrosion** (especially in **B6 models**) can be an issue in **salted climates**, requiring **underbody treatment and rust repairs**.

6. **Market Competition and Availability**

- **B6/B7 S4s are not rare**, meaning **competition for good examples is fierce**.

- **BBK head models (2003 )** are **more desirable** than early WR8A engines, but **well-maintained WR8A examples** can still be found.

- **Restored or lightly modified S4s** command **premium prices**, while **high-mileage, neglected examples** can be **difficult to sell**.

---

### **Conclusion**

Buying a **VW/Audi B6/B7 S4 with a 4.2L V8 and BBK cylinder head (right passenger side)** can be a **fantastic investment** if you:

- **Prioritize maintenance** (regular oil changes, valve cleaning, and transmission service).

- **Are prepared for potential repairs** (especially **rod bearings, water pump, and suspension components**).

- **Enjoy classic sports cars** and don t mind **higher running costs** compared to modern alternatives.

- **Plan to either drive it hard or restore it** (since it holds value among enthusiasts).

However, it is **not the best choice** if you:

- **Want low running costs** (fuel, insurance, maintenance).

- **Prefer a plug-and-play, modern performance car** (e.g., a **BMW M3, Porsche 911, or modern turbocharged S-class**).

- **Are not mechanically inclined** (VW/Audi repairs can be **complex and expensive**).

- **Want a daily driver** without **extra attention to maintenance**.

---

### **Recommendation**

**Buy it if:**

You **find a well-documented example** (service records, **BBK head, low miles, no major issues**).

You **plan to either drive it aggressively or restore it** (since it appreciates in value).

You **budget for potential repairs** (especially **rod bearings, water pump, and suspension**).

You **enjoy the driving experience** and don t mind **higher fuel and maintenance costs**.

**Avoid it if:**

You **expect a low-maintenance, high-mileage daily driver**.

You **can t afford unexpected repairs** (e.g., **engine rebuilds, transmission work**).

You **prefer modern technology and reliability** over a classic V8 experience.

The **price is too high** relative to **market value for similar examples in good condition**.

**Best Approach:**

- **Get a pre-purchase inspection (PPI) from a trusted mechanic** (especially checking **rod bearings, water pump, and cylinder head condition**).

- **Avoid examples with:**

- **Blue smoke (oil burning)**

- **Rough idle or misfires (potential valve or ignition issues)**

- **Transmission slipping or delayed engagement**

- **Excessive carbon buildup (requires valve cleaning)**

- **Consider a BBK head model (2003 )** over an early WR8A if possible, as they are **more reliable long-term**.

**Final Verdict:**

The **B6/B7 S4 with a BBK head 4.2L V8 is a fantastic car for the right buyer** one who **values driving enjoyment, modification potential, and classic sports car culture**. However, it **requires commitment to maintenance** and **budgeting for repairs**. If you re prepared for that, it can be a **lifetime project or a high-value investment**. If not, a **modern turbocharged sports car** may be a more practical choice.

Details:

Audi B6 B7 S4 4.2 V8 Cylinder Head Right Passenger 079103373G, Used head out of a S4, someones been in the engine before its very clean, no varnish, coolant passages need to be cleaned up, had leak at water pump mounting on pan, so looks like they ran nothing but till parked. Heads do come with the cams. Not sure if they constantly or the coil packs were sealing, tubes need work as well. Should really be cleaned up.

specifications cylinderheapar:

  • for models: B6, B7, S4
  • brand: Genuine Vw Audi
  • mpn: 079103373g
  • type: Cylinder Head
  • material: Aluminum
  • vintage part: No
  • country of origin: Germany

seller cylinderheapar:

  • # reviews: 176
  • city: Tucson, Arizona
  • rating: 100.0%

returns cylinderheapar:

  • policy: No Returns

general cylinderheapar:

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

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offer cylinderheapar:

  • started: May 8, 2026
  • best offers: True
  • quantity: 1
  • options: Ship-to-home
  • sold: 0
  • availability: In Stock

shipping cylinderheapar:

  • cost: $120.00
  • type: Fixed
  • transit: 4-10 Days
  • carrier: FedEx
  • service: FedEx Ground / FedEx Home Delivery
  • class: Standard
for models: b6, b7, s4, type: cylinder head, vintage part: no, country of origin: germany,
category: auto parts > car truck parts accessories > engines engine parts > cylinder heads, material: aluminum, sku: 12076657056608632,
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