SUBARU 306-58996BL Driver Left Cylinder Head 2.2L 12394662

( Conditions Options: 2.2 ), ( Genuine Oem: Yes ), ( Ipn: 306-58996bl ), ( Placement: Driver/left ), ( Manufacturer Warranty: 60 Day ), ( Type: Cylinder Head )

Review SUBARU Driver Left Cylinder Head From 2.2l fits LEGACY 1999

The **Subaru 306-58996BL Driver Side Cylinder Head (1999, 2.2L, Part #12394662)** is a precision-engineered component designed specifically for the high-performance and reliability demands of the iconic **EJ22** engine family, commonly found in Subaru s 1999 models like the Legacy, Outback, and Impreza. This driver-side cylinder head is a critical part of the engine s combustion system, responsible for housing the intake and exhaust valves, spark plugs, and the camshaft mechanism, all of which work in tandem to optimize airflow and combustion efficiency. Crafted from high-grade cast iron, the head is engineered to withstand the thermal and mechanical stresses of high-revving applications while maintaining structural integrity under extreme operating conditions. The **12394662** designation ensures compatibility with the **2.2L naturally aspirated EJ22 engine**, which is known for its robust yet forgiving design, making it a popular choice for both stock and modified builds. The head features **four valves per cylinder (DOHC)**, allowing for improved breathing and better throttle response, a hallmark of Subaru s tuning potential. Whether replacing a worn or damaged head due to overheating, warping, or internal failure, this genuine OEM part guarantees a seamless fit with the stock valve cover, rocker arm assembly, and intake manifold, ensuring optimal performance and longevity. For enthusiasts looking to restore stock reliability or those seeking a high-quality upgrade for a modified engine, this driver-side cylinder head is an essential component that delivers both durability and performance, embodying Subaru s reputation for rugged, dependable engineering.

### **Pros and Cons of Buying a Subaru 306-58996BL (1999, 2.2L, 12394662) Driver-Side Cylinder Head**

1. **Reliability of the 2.2L EJ22 Engine**

- The Subaru 2.2L EJ22 engine is known for its durability, especially when properly maintained. Many examples last well beyond 200,000 miles with basic upkeep.

- The engine is air-cooled (in early models) or liquid-cooled (later models), which helps prevent overheating issues common in older air-cooled engines.

2. **Symmetrical AWD System**

- Subaru s symmetrical all-wheel-drive system provides excellent traction in snow, rain, and off-road conditions, making it a practical choice for drivers in harsh climates.

3. **Moderate Fuel Economy**

- For its time, the 2.2L engine offered decent fuel efficiency, averaging around **18-22 MPG combined** (city/highway), which is reasonable for a 1999 vehicle.

4. **Potential for Modifications**

- The EJ22 engine has a strong aftermarket support, allowing for upgrades like turbocharging, intake/exhaust modifications, and suspension tuning.

- Head swaps (e.g., replacing the stock head with a more durable or high-performance version) are common, which could address the specific cylinder head issue.

5. **Lower Purchase Price**

- Older Subarus, especially with known issues, are often sold at discounted prices, making this a budget-friendly option if you re willing to invest in repairs.

6. **Classic Subaru Feel**

- If you appreciate the unique character of older Subarus boxy styling, manual transmission option (if available), and a cult following this could be a fun project car.

---

1. **Driver-Side Cylinder Head Concerns**

- The **306-58996BL** part number indicates a **driver-side cylinder head** that has likely failed or is at risk of failure. Common issues include:

- **Leaking head gaskets** (leading to coolant loss, oil contamination, or overheating).

- **Warped or cracked heads** (often due to overheating or poor maintenance).

- **Rod bearing failure** (a catastrophic failure that can destroy the engine if not caught early).

- White smoke from the exhaust (coolant burning).

- Milky oil (coolant mixing with oil).

- Overheating.

- Knocking or ticking noises (indicating rod bearing wear).

- **Cost of Repair:** Replacing a cylinder head (or both heads) can cost **$1,500 $3,000 **, depending on labor rates and whether you need new parts.

2. **Rod Bearing Failure Risk**

- The **EJ22 engine is notorious for rod bearing wear**, especially in high-mileage examples. If the driver-side head is failing, the rod bearings may already be compromised.

- **Replacement cost:** Rod bearings alone can run **$800 $1,500**, plus labor for engine disassembly.

3. **Maintenance Neglect**

- Worn suspension (ball joints, bushings, struts).

- Transmission issues (especially in automatic models).

- Electrical gremlins (faulty sensors, wiring problems).

- Rust (common in older Subarus, especially in snowy regions).

4. **Reliability of the Transmission**

- If the car has an **automatic transmission (e.g., 4H or 5H)**, it may require **fluid changes and potential rebuilds** over time.

- Manual transmissions are generally more reliable but require more frequent maintenance.

5. **Parts Availability & Cost**

- While parts for the EJ22 are still available, they can be **expensive** compared to newer vehicles.

- Some aftermarket parts (e.g., upgraded head gaskets, rod bearings) may be needed to prevent future failures.

6. **Depreciation & Resale Value**

- Subarus (especially older models) hold value poorly compared to Japanese competitors like Toyota or Honda. If you plan to sell later, resale may not recover much of your investment.

7. **Potential for Hidden Issues**

- **Blown head gaskets** (leading to engine damage).

- **Rod bearing failure** (a "death wish" engine if not addressed).

- **Transmission or drivetrain issues**.

- **Electrical or fuel system problems**.

---

### **Ending Conclusion & Recommendation**

#### **Should You Buy This Subaru?**

Buying this **1999 Subaru with a failing driver-side cylinder head** is a **high-risk, high-reward** decision. The engine s potential for **catastrophic failure (rod bearings head issues)** makes it a **project car** rather than a reliable daily driver.

1. **Get a Full Pre-Purchase Inspection (PPI)**

- Check for **rod bearing wear** (listen for knocking, check oil for metal particles).

- Inspect the **cylinder heads** for warping, cracks, or leaks.

- Test the **transmission, suspension, and electrical systems**.

- **Cost:** $150 $300 (worth it to avoid a $3,000 repair).

2. **Budget for Major Repairs**

- **$1,500 $3,000 ** for head replacement (or both heads).

- **$800 $1,500** for rod bearing replacement.

- **$500 $1,000** for additional engine work (seals, gaskets, balancing).

- **Total potential repair cost:** **$3,000 $5,000 ** (not including labor if you DIY).

3. **Consider a Head Swap or Engine Rebuild**

- Instead of replacing just the driver-side head, **replacing both heads** (or doing a full rebuild) may be more cost-effective long-term.

- **Aftermarket heads** (e.g., **EJ22 heads with upgraded materials**) can help prevent future failures.

4. **Buy Only If You re Prepared for a Project**

- This car is **not a plug-and-play purchase** it requires **time, money, and mechanical skill** to make reliable.

- If you re **willing to invest in repairs, enjoy working on cars, or want a fun project**, it could be worth it.

- If you **need a reliable daily driver**, look for a **well-maintained Subaru with a known good engine** (e.g., a **2000 model with a fresh head and rod bearings**).

5. **Alternative Options**

- **Buy a used Subaru with a known good engine** (e.g., a **2000 model with a rebuilt EJ22**).

- **Consider a Toyota or Honda** (more reliable, better resale value).

- **Look for a Subaru with a turbocharged EJ22** (if you want performance potential).

You **have the budget** for major engine work.

You **enjoy mechanical projects** and are willing to put in the time.

You **find a seller who provides a warranty or allows a PPI**.

You **accept that it may not be a reliable daily driver** but could be a fun, high-performance project.

You **need a dependable car** without major repairs.

You **can t afford unexpected engine failure costs**.

The **seller won t let you inspect it properly**.

---

**Best Case:** You **fix the engine, enjoy driving it, and keep it running for years** with proper maintenance.

**Worst Case:** You **buy a rod-bearing failure on wheels**, spend **$3,000 on repairs**, and still end up with a car that s not reliable.

**Recommendation:** **Walk away unless you re absolutely certain about the engine s condition and have the funds to fix it properly.** If you re serious, **inspect it thoroughly first** or consider a **rebuilt EJ22 engine** from a trusted source instead of buying a used one with unknown history.

Details:

Labor and costs associated with part installation are not covered under warranty. If you discover any defects, rest assured it is covered by our three month warranty.

part #: 306-58996bl price

• $223.94

specifications cylinderheapar:

• for models: Legacy
• for makes: Subaru
• for years: 1999
• conditions options: 2.2
• genuine oem: Yes
• ipn: 306-58996bl
• placement: Driver/left
• manufacturer warranty: 60 Day
• type: Cylinder Head

seller cylinderheapar:

• rating: 99.9%
• city: Missoula, Montana
• # reviews: 47329

general cylinderheapar:

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

returns cylinderheapar:

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

payments cylinderheapar:

• wallet: Paypal
• other
• credit card: Discover

shipping cylinderheapar:

• type: Fixed
• carrier: FedEx
• service: FedEx Ground / FedEx Home Delivery
• class: Standard
• cost: $0.00
• transit: 4-7 Days

offer cylinderheapar:

• sold: 0
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• started: March 13, 2026

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