SUBARU Front Engine Cylinder Head Valve Cover 11019AA970/ 13279AA40A

( Manufacturer Part Number: 11019AA970/ ), ( Type: Cylinder Head Assembly ), ( Items Included: Bolts, Valve Cover ), ( Country Of Origin: Japan )

Review SUBARU 11019aa970/ Front Engine Cylinder Head Assembly Valve Cover Oem fits WRX 2015–2021

The **Subaru 11019AA970 / 13279AA40A 2015-2021 WRX Front Engine Cylinder Head Valve Cover** is a precision-engineered component designed to protect the intricate internal mechanisms of the WRX s high-performance FA20 engine while maintaining optimal airflow and thermal regulation. Crafted from high-quality **aluminum alloy**, this valve cover is engineered to withstand the extreme demands of forced induction, ensuring durability under the high cylinder pressures and temperatures generated by the turbocharged 2.5-liter horizontally opposed (flat-four) powerplant. The cover features a **smooth, aerodynamic design** with integrated **ventilation ports** that promote efficient heat dissipation, preventing overheating and ensuring consistent valve operation. Its **tight-fitting gasket** often included or recommended for installation creates a reliable seal, preventing oil leaks and maintaining engine vacuum integrity, which is critical for performance and longevity.

Beyond its functional role, this valve cover also serves an aesthetic purpose, contributing to the WRX s signature aggressive and sporty appearance. The **black powder-coated finish** is both visually striking and resistant to corrosion, offering long-lasting protection against road debris, moisture, and environmental contaminants. The cover s **precision-machined surface** ensures a seamless fit with the cylinder head, minimizing the risk of misalignment or improper sealing, which could lead to performance losses or engine damage. For enthusiasts and mechanics alike, this component is a straightforward yet essential upgrade, offering a balance of performance enhancement, reliability, and visual appeal. Whether installed as part of a routine maintenance procedure or as part of a more extensive engine rebuild, the **Subaru 11019AA970 / 13279AA40A valve cover** is a critical piece of the WRX s high-performance ecosystem, ensuring that the engine operates at its peak efficiency under both street and track conditions.

### **Pros and Cons of Buying a 2015-2021 Subaru WRX Front Engine Cylinder Head Valve Cover (Part Numbers: 11019AA970, 13279AA40A)**

1. **Direct OEM Fitment** These are genuine Subaru parts, ensuring a perfect fit with no modifications required. They are designed to match the factory specifications of your WRX, reducing the risk of leaks or improper sealing.

2. **High-Quality Materials** Subaru uses durable materials in their valve covers, which are resistant to warping, cracking, and oil leaks over time. This helps maintain engine longevity, especially important for high-performance applications like the WRX.

3. **Aesthetic Consistency** If you prefer a stock look, these valve covers maintain the original Subaru styling, which can be appealing for those who value factory appearance.

4. **Warranty Coverage** Purchasing from an authorized Subaru dealer or reputable aftermarket supplier may include a warranty, providing peace of mind against defects.

5. **Compatibility with Stock and Modified Engines** These valve covers work seamlessly with both stock and mildly modified engines (e.g., minor tuning, intake upgrades). For heavily modified engines (e.g., forced induction, aggressive tuning), aftermarket alternatives may be more suitable, but these OEM parts are still a solid baseline.

6. **Easy Installation** Since they are stock parts, they are straightforward to install, requiring only basic tools and minimal disassembly.

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1. **Limited Performance Benefits** Unlike aftermarket valve covers (which may offer better airflow, weight reduction, or heat dissipation), these OEM parts do not provide any performance advantages. If you are running a heavily modified engine, an aftermarket cover (e.g., from companies like **Comp Cams, JE, or Subaru-specific brands**) may be more beneficial.

2. **Potential for Oil Leaks Over Time** While Subaru valve covers are generally reliable, gaskets can degrade with age or high mileage, leading to leaks. Replacing the gasket (or using a high-quality aftermarket one) is often recommended during installation.

3. **Higher Cost Compared to Aftermarket** OEM parts are typically more expensive than aftermarket alternatives. For example, a genuine Subaru valve cover may cost **$100 $200**, whereas a high-quality aftermarket version could be **$50 $120**. If you re on a budget, aftermarket options may be more cost-effective.

4. **Weight** OEM valve covers are heavier than some aftermarket lightweight alternatives (e.g., aluminum or carbon fiber). While the difference is minimal, performance-focused drivers may prefer lighter parts for better engine balance.

5. **Limited Customization** If you want a unique look (e.g., painted, decaled, or custom-machined), OEM parts offer no flexibility. Aftermarket covers often come in various finishes and designs.

6. **Potential for Stock Design Flaws** Some owners report that the stock valve cover design (especially on older WRX models) can be prone to warping under high heat or stress. While rare, this is a consideration for long-term reliability.

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The **2015 2021 Subaru WRX OEM valve covers (11019AA970, 13279AA40A)** are a **reliable, high-quality choice** for those who prioritize **fitment, durability, and stock appearance**. They are ideal for:

- **Stock or mildly modified engines** where OEM fitment is critical.

- **Owners who want to avoid aftermarket risks** (e.g., improper sealing, leaks).

- **Those who prefer brand consistency** and warranty coverage.

However, if you are **running a heavily modified engine (turbocharged, aggressive tuning, or high RPMs)**, an **aftermarket valve cover** (e.g., from **Comp Cams, JE, or Subaru-specific brands**) may offer **better airflow, weight savings, or heat resistance**. Additionally, if **cost is a concern**, aftermarket options provide a more budget-friendly alternative without sacrificing quality.

For **most stock or lightly modified WRX owners**, the OEM valve covers are a **safe and practical choice**. If you re unsure, consulting with a **Subaru specialist or performance tuner** can help determine whether an aftermarket upgrade is necessary.

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- You want **guaranteed fitment** and **factory reliability**.

- Your engine is **stock or mildly modified**.

- You prefer **no compromises on quality** and are willing to pay for OEM parts.

- You are **running forced induction or aggressive tuning**.

- You want **weight savings or better heat dissipation**.

- You are **on a budget** and can find a reputable aftermarket brand.

Always **replace the gasket** (or use a high-quality aftermarket one) during installation to prevent leaks. If in doubt, consult a **Subaru mechanic or performance shop** for advice tailored to your specific build.

Details:

DONOR VEHICLE: 2019 SUBARU WRX.

part #: 11019aa970 prices

• $58.50-$722.65

specifications cylinderheapar:

• for models: Wrx
• for makes: Subaru
• for years: 2015-2021
• mpn: 11019aa970/
• type: Cylinder Head Assembly
• items included: Bolts, Valve Cover
• country of origin: Japan

seller cylinderheapar:

• city: Inman, South Carolina
• # reviews: 1156
• rating: 100.0%

shipping cylinderheapar:

• service: FedEx Ground / FedEx Home Delivery
• cost: $45.00
• class: Standard
• type: Fixed
• carrier: FedEx
• transit: 3-8 Days

general cylinderheapar:

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

returns cylinderheapar:

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

payments cylinderheapar:

• wallet: Google-pay
• other
• credit card: Visa

offer cylinderheapar:

• availability: In Stock
• sold: 0
• started: March 25, 2026
• options: Ship-to-home
• quantity: 1
• best offers: True

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