VOLKSWAGEN 306-59318 Cylinder Head Engine Bbw 2.0L

( Part Type: Cylinder Head Engine ), ( Conditions Options: 2.0, Id Bbw ), ( Genuine Oem: Yes ), ( Ipn: 306-59318 )

Review VOLKSWAGEN Cylinder Head 2.0l Engine Id Bbw fits JETTA 2004–2005

The **Volkswagen 306-59318 cylinder head** is a precision-engineered component designed specifically for the **2.0L 16-valve inline-four (BXW/BBW) engine** found in the **2004 2005 Volkswagen Jetta (MK5)**, as well as the **2005 2006 Volkswagen GTI** and **2004 2005 Audi A3 (8L)**. This high-performance cylinder head is crafted from **high-grade cast iron**, ensuring durability and resistance to thermal stress while maintaining optimal heat dissipation for reliable long-term operation. The head features a **dual overhead camshaft (DOHC) design**, complete with **four valves per cylinder (two intake and two exhaust)** arranged in a **crossflow configuration**, allowing for improved airflow and enhanced engine efficiency. The **intake valves** are slightly larger than the exhaust valves, optimizing combustion chamber performance and contributing to a more responsive throttle response and better low-end torque. The **valve seats and guides** are precision-machined to exacting specifications, ensuring proper sealing and minimizing the risk of valve leakage or premature wear. The **camshaft lobes** are designed to deliver a balanced lift profile, balancing both power delivery and smooth operation across the engine s rev range. This cylinder head is compatible with the **BBW engine variant**, which includes features such as **multi-point fuel injection (MPFI)**, a **distributorless ignition system**, and **variable intake manifold control (VIMC)** for improved airflow management. Whether you're restoring a classic Jetta, upgrading an engine, or replacing worn components, this **OEM-quality cylinder head** provides the structural integrity and performance characteristics required to maintain peak engine function. Proper installation, including the use of **high-quality gaskets, torque specifications, and a thorough leak test**, is essential to ensure optimal sealing and longevity. For best results, pair this cylinder head with a **new valve cover gasket, head bolts, and a fresh cylinder head seal** to prevent future issues such as coolant leaks or compression loss.

Buying a **Volkswagen 306-59318 cylinder head for a 2.0L BBW (AWV) engine (2004-2005 Jetta)** can be a cost-effective solution for engine repairs, but it comes with several considerations. Below is a detailed breakdown of the pros and cons, followed by a conclusion and recommendation.

---

### **Pros of Buying a Used/Aftermarket Cylinder Head**

1. **Cost Savings**

- New OEM cylinder heads for a 2.0L BBW engine can cost **$800 $1,200 ** depending on the source (Volkswagen dealer, authorized distributor, or online retailers). A used or aftermarket head can be significantly cheaper, often ranging from **$200 $600**, depending on condition and source.

- This makes it a practical option for budget-conscious buyers who want to avoid paying full retail prices.

2. **Widespread Availability**

- **Used parts markets** (eBay, Craigslist, local junkyards)

- **Aftermarket suppliers** (Dorman, Fel-Pro, RockAuto, or specialty European parts dealers)

- **Salvage yards** (where you can inspect the head before purchase)

- This increases the likelihood of finding a suitable match quickly.

3. **Potential for Customization**

- Larger valve sizes for improved airflow

- Port matching for better exhaust scavenging

- Lightweight materials (e.g., aluminum) for reduced reciprocating mass

- If you re running a modified engine (e.g., turbocharged, high-compression kit), a performance head may be preferable to a stock one.

4. **Quick Turnaround**

- Purchasing a used or aftermarket head avoids long wait times associated with ordering new OEM parts, which can sometimes take weeks or months, especially if the part is backordered.

5. **Compatibility with Other Applications**

- The 2.0L BBW cylinder head is also used in other VW/Audi models (e.g., 2004 2005 Golf, 2004 2006 GTI, 2004 2005 Passat), expanding the pool of available parts.

6. **Easier Installation for DIYers**

- Since the head is a common repair item, there are abundant online resources (forums like **VWVortex, TurboNerd, or YouTube tutorials**) to guide installation, gasket selection, and torque specifications.

---

### **Cons of Buying a Used/Aftermarket Cylinder Head**

1. **Uncertainty of Condition**

- **Cracked or warped heads** (common in high-mileage or overheated engines)

- **Worn or pitted valve seats** (leading to oil consumption or valve leaks)

- **Exhaust port erosion** (from carbon buildup or incorrect fuel mixtures)

- **Leaking or damaged gasket surfaces** (requiring resurfacing)

- Without a thorough inspection, you risk purchasing a head that needs **expensive machining or replacement** shortly after installation.

2. **Risk of Incorrect Part Number or Fitment**

- **Different valve stem designs** (e.g., some heads use **11mm stems**, while others use **10mm**)

- **Incorrect spark plug threads** (some heads require **M14x1.25**, while others may need conversion)

- **Exhaust manifold compatibility issues** (some aftermarket heads may not align properly with the stock manifolds)

- Always verify fitment before purchasing, especially if buying from an unknown source.

3. **Potential for Contamination**

- Clog oil passages, leading to **engine oil starvation**

- Cause **carbon buildup** in the combustion chamber

- Introduce **foreign particles** that damage valves or pistons

- Cleaning the head thoroughly (or having it professionally cleaned) is essential before installation.

4. **Warranty and Liability Issues**

- Used or aftermarket parts typically come with **no warranty**, meaning you bear full responsibility for any failures.

- If the head fails due to manufacturing defects (e.g., a cracked casting), you may have no recourse for a replacement.

- Some aftermarket suppliers offer limited warranties, but these are often short-term (e.g., 30 90 days).

5. **Machining and Preparation Costs**

- **Resurfacing** (if the deck is warped, costing **$50 $150**)

- **Valve seat machining** (if seats are worn, **$100 $300**)

- **Port cleaning** (to remove carbon buildup, **$50 $200**)

- These additional costs can **erode the savings** of buying a used head.

6. **Potential for Mismatched Components**

- Some aftermarket heads are designed for **specific applications** (e.g., turbocharged, high-performance). Installing one in a stock engine may lead to:

- **Improper valve timing** (if using a different camshaft profile)

- **Increased oil consumption** (if valve guides or seals are not compatible)

- **Reduced reliability** if the head is not rated for the engine s power output

7. **Risk of Counterfeit or Low-Quality Parts**

- Some online sellers (especially on eBay or Alibaba) may offer **fake or substandard parts** that fail prematurely.

- Always buy from **reputable suppliers** with good reviews and return policies.

---

### **Conclusion**

- **Inspect the head thoroughly** (look for cracks, warping, or damage).

- **Verify fitment** (valve stems, spark plug threads, manifold compatibility).

- **Clean and machine it properly** before installation.

- **Buy from a trusted source** (preferably a salvage yard, reputable online retailer, or a mechanic you trust).

However, if you **prioritize reliability and long-term performance**, a **new or remanufactured OEM head** (or a high-quality aftermarket option like **Fel-Pro or Dorman**) may be worth the extra cost. Remanufactured heads often come with **warranties** and are **machine-tested for quality**, reducing the risk of failure.

---

### **Recommendation**

- **Buy a used head from a salvage yard** (where you can inspect it in person).

- **Get it professionally inspected** for cracks, warping, and valve condition.

- **Clean and machine it** before installation to ensure proper sealing.

- **Consider a remanufactured head** if you want a balance between cost and reliability.

- **Purchase a new or remanufactured OEM head** from a **VW-approved dealer or distributor** (e.g., **VW Parts, RockAuto, or a local VW specialist**).

- **Invest in a high-quality aftermarket head** (e.g., **Fel-Pro, Dorman, or a performance brand like **Clevite or Mahle**) if you re running modifications.

- **Use a new head gasket set** (e.g., **Fel-Pro or AISIN**) to prevent leaks.

- **Get a professional opinion** before purchasing some mechanics offer **head inspection services** for a small fee.

- **Check online forums** (VWVortex, TurboNerd) for recommendations on where to buy and what to look for.

A used cylinder head can save you money, but it requires **due diligence**. If you re comfortable with the risks and willing to put in the effort to inspect and prepare it, it s a viable option. For most DIYers, however, a **new or remanufactured head** is the **safest and most hassle-free choice**, especially if you want to avoid future engine issues.

Details:

Brokered/non-stocked parts ordered specifically for your request. Limited Warranty Coverage. JETTA 04-05 2.0L, engine ID BBW. Transmissions: Transmissions will come with the torque converter and all sensors.

Please remember you are purchasing OEM Original Equipment Manufacturer USED parts. Scope: This limited warranty covers defects in the purchased part that render it inoperable or defective within 90-day period. Bolt-on items Dispute Resolution.

Convenience Items: Items attached to or included with the part, such as wiring, bulbs, sockets, sensors, coils, distributor caps, spark plugs, water pumps, filters, brake parts, backing plates, hoses, vacuum lines, u-joints, timing belts/components, similar items, are considered convenience items and not covered by this limited warranty. Check the Q A section for Business Support. No expedited shipping is available. Bumper assemblies DO NOT come with Upper Grilles unless stated.

Normal wear and tear from the previous use is expected. Any bulbs or wiring still attached to the,Tail Light,assemblies are not warranted part of the listing in any way. The part is not a special order. Sensors, valve covers, timing covers attached to core short/long blocks are not covered.

The part has not been installed. The part is not a custom body cut. Axles Assemblies: Axle assemblies will not include any brake hardware: Calipers/Rotors/Shoes/Pads/Hoses/Brake Lines. Labor and Related Costs: This limited warranty does not cover labor, diagnostics, towing, rental car costs, or any other expenses related to the installation, testing, removal, replacement of a part.

Exclusions from Limited Warranty. Steering Columns: All steering columns sold will come without airbags. The part has not been altered, modified, disassembled, overheated or damaged. All parts sold as is except expressly provided below.

part #: 306-59318 prices

• $85.00-$2267.99

specifications cylinderheapar:

• for models: Jetta
• for makes: Volkswagen
• for years: 2004-2005
• part type: Cylinder Head Engine
• conditions options: 2.0, Id Bbw
• genuine oem: Yes
• ipn: 306-59318

offer cylinderheapar:

• availability: In Stock
• quantity: 1
• options: Ship-to-home
• sold: 0
• started: February 12, 2026

shipping cylinderheapar:

• class: Standard
• type: Fixed
• service: Standard
• transit: 2-6 Days
• cost: $65.00

returns cylinderheapar:

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

general cylinderheapar:

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

payments cylinderheapar:

• wallet: Google-pay
• other
• credit card: Diners-club

seller cylinderheapar:

• rating: 99.6%
• city: Annandale, Minnesota
• # reviews: 43125

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