SUBARU 11063AB020 Left Cylinder Head Tribeca Gas 3.0

( Manufacturer Part Number: 11063AB020 ), ( Fitment Type: Direct Replacement ), ( Mounting Hardware Included: No ), ( Manufacturer Warranty: 30 Days ), ( Type: Left Cylinder Head ), ( Engine Size: 3.0 ), ( Valvetrain Iteration: Dohc ), ( Transmission Type: Automatic ), ( Location Id: 3g03 ), ( Vehicle Id: 16761 )

Review SUBARU Left Cylinder Head Tribeca 3.0 Gas fits B9 2006–2007

The **Subaru 11063AB020 Left Cylinder Head** is a precision-engineered component designed exclusively for the **2006 2007 Subaru Tribeca B9 3.0L gasoline engine**, ensuring optimal performance, reliability, and longevity for this robust horizontal-opposition (boxer) powerplant. Crafted from high-grade cast iron, this cylinder head is meticulously machined to exact specifications, featuring a **four-valve per cylinder design** with **intake and exhaust ports** optimized for efficient airflow and combustion. The head is equipped with **integrated spark plug bosses**, **valve guides**, and **seating surfaces** that have been carefully honed to maintain proper sealing and thermal conductivity, preventing leaks and ensuring consistent compression. The **left cylinder head** is specifically tailored to fit the left bank of the engine, aligning perfectly with the **B9 3.0L s** unique cylinder arrangement while accommodating the **EJ255 engine family s** distinctive cylinder head gasket interface. This part is compatible with both **naturally aspirated and turbocharged** applications, making it a versatile choice for enthusiasts looking to restore or upgrade their Tribeca s engine. Built to withstand the demands of high-performance driving, this cylinder head is designed to work seamlessly with the **EJ255 s** **interference-fit camshafts**, **hydraulic lifters**, and **pushrods**, delivering smooth operation and minimizing wear over extended use. Whether replacing a worn or damaged head, upgrading for increased power, or restoring stock performance, this **OEM-quality cylinder head** ensures a perfect fit and reliable function, helping to maintain the Tribeca s reputation for durability and driving enjoyment.

### Pros and Cons of Buying a Used Subaru 11063AB020 Left Cylinder Head for a 2006-2007 B9 Tribeca 3.0L Gas Engine

1. **Compatibility and Fit:** The 11063AB020 is the correct cylinder head for your 2006-2007 Subaru Tribeca with the 3.0L naturally aspirated (NA) engine. It is a direct replacement, ensuring proper alignment with the engine block, intake manifold, and other components.

2. **Performance Potential:** A well-maintained or rebuilt cylinder head can improve engine performance by ensuring proper valve operation, combustion efficiency, and cooling. If the original head was damaged (e.g., from overheating, warping, or valve issues), replacing it can restore or enhance power output.

3. **Prevents Further Damage:** If your current head is cracked, leaking oil, or suffering from valve or seat wear, replacing it early can prevent catastrophic engine failure (e.g., blown head gasket, seized valves, or piston damage from overheating).

4. **Cost-Effective Alternative:** Purchasing a used cylinder head (especially from a reputable source like a junkyard, salvage yard, or trusted seller) is often cheaper than buying a new or remanufactured one. This can save you hundreds of dollars while still providing a functional part.

5. **Easier to Source Than a Full Engine:** Replacing just the cylinder head is less labor-intensive and costly than swapping out the entire engine. This makes it a practical choice for repairs that don t involve the block or other major components.

6. **Potential for Customization:** If you re looking to modify your engine (e.g., porting, polishing, or upgrading valves), a used cylinder head can serve as a base for such projects, provided it s in good condition.

7. **Warranty or Guarantee Options:** Some sellers offer warranties or guarantees on used parts, which can provide peace of mind if the head is still under warranty or has been professionally inspected.

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- **Warping:** Overheating can cause the head to warp, leading to poor sealing and potential leaks or misfires.

- **Valve or Seat Damage:** Worn valve seats, cracked valves, or pitted valve guides can cause poor combustion and long-term engine problems.

- **Internal Leaks:** Oil or coolant leaks from the head gasket surface or internal passages can go unnoticed until the engine is running.

- **Corrosion or Rust:** If the head was stored improperly, rust can weaken critical areas like the water passages or bolt threads.

2. **No Warranty or Return Policy:** Unlike new or remanufactured parts, used cylinder heads typically come with no warranty. If the head fails shortly after installation, you ll be responsible for the cost of replacement or repair.

3. **Compatibility Risks:** Even if the part number matches, there s a chance the head was pulled from a different engine variant (e.g., turbocharged, diesel, or a different model year) with slight differences in mounting holes, bolt patterns, or internal components. Always verify the head s origin and condition.

- Removing and installing a cylinder head requires specialized tools (e.g., torque wrench, valve spring compressor, head gasket scraper, and possibly a head lift).

- Improper installation (e.g., overtightening bolts, not replacing gaskets, or not sealing passages) can lead to leaks, warping, or poor performance.

- If you re not experienced with engine work, you may need to pay a mechanic for installation, adding to the cost.

- You may need to purchase additional items like a new head gasket, valve seals, or gasket maker to ensure a proper seal.

- If the head is seized or damaged beyond repair, you ll have wasted money on a non-functional part.

- Diagnosing the root cause of the original failure (e.g., overheating, coolant issues) is crucial if the problem persists, you may need further repairs.

6. **Limited Longevity:** Even if the head is in good condition now, it may not last as long as a new or remanufactured part, especially if the engine sees heavy use or extreme conditions.

7. **Time-Consuming:** Sourcing a reliable used head may require extensive research, contacting multiple sellers, or traveling to a junkyard. This can delay your repair timeline.

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Buying a used Subaru 11063AB020 cylinder head for your 2006-2007 Tribeca can be a cost-effective solution if you re dealing with a specific failure (e.g., cracked head, warping, or valve issues) and are confident in your ability to inspect and install it properly. However, the risks of hidden damage, compatibility issues, and lack of warranty make it a higher-risk option compared to purchasing a new or remanufactured part.

If you re mechanically inclined and can thoroughly inspect the head (or have it inspected by a trusted mechanic), a used head can save you money. Alternatively, if budget allows, investing in a remanufactured or new cylinder head from a reputable supplier (e.g., Subaru parts dealer, RockAuto, or a trusted online retailer) may offer better long-term reliability and peace of mind.

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- Confirm the head was pulled from a 2006-2007 3.0L NA Tribeca engine. Ask the seller for proof (e.g., photos of the engine it came from or a bill of sale).

- Check for signs of wear, warping, or damage (e.g., cracks, rust, or uneven surfaces).

- Cracks (use a dye penetrant or magnifying glass if needed).

- Warping (check the mating surface with a straightedge and feeler gauges).

- Valve and seat condition (ensure seats are smooth and valves close properly).

- Oil or coolant leaks (check for residue or corrosion in passages).

- If you re unsure, take it to a mechanic for a professional inspection.

- If you can afford it, a remanufactured cylinder head from a dealer like **Subaru Parts, RockAuto, or a local auto parts store** will come with a warranty and be restored to factory specifications. While more expensive, it eliminates the risk of hidden issues.

- Purchase a new head gasket, valve seals, and gasket maker to ensure a proper seal. These are often required even with a used head.

- If you re not experienced with engine work, factor in the cost of labor for installation. Improper installation can void warranties and cause further damage.

- If your engine has a history of overheating or coolant issues, address those problems (e.g., replace the thermostat, check the cooling system, or inspect the head gasket) to prevent future head failures.

- If the head is beyond repair, consider whether a full engine swap or rebuilding the existing engine is more cost-effective in the long run.

- Explore the possibility of borrowing or renting a cylinder head from a local mechanic or auto repair shop for testing before committing to a purchase.

If you re confident in your ability to inspect and install the head correctly and can find a high-quality used example, purchasing a used 11063AB020 cylinder head is a viable and budget-friendly option. However, if reliability and warranty coverage are priorities, prioritize a remanufactured or new part. Always weigh the risks against your mechanical skills and the urgency of the repair.

Details:

Subaru Outback 2005 2009 3.0L. Subaru Legacy 2006 2009 3.0L. Subaru B9 Tribeca 2006 2007 3.0L. Please replace such items as required for proper installation.

part #: 11063ab020 prices

• $499.95-$549.00

specifications cylinderheapar:

• for models: B9
• for makes: Subaru
• for years: 2006-2007
• mpn: 11063ab020
• fitment type: Direct Replacement
• mounting hardware included: No
• manufacturer warranty: 30 Days
• type: Left Cylinder Head
• engine size: 3.0
• valvetrain iteration: Dohc
• transmission type: Automatic
• location id: 3g03
• vehicle id: 16761

payments cylinderheapar:

• wallet: Paypal
• other
• credit card: Discover

returns cylinderheapar:

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

seller cylinderheapar:

• city: Denver, Colorado
• # reviews: 69556
• rating: 99.8%

offer cylinderheapar:

• quantity: 1
• started: March 5, 2026
• availability: In Stock
• sold: 0
• options: Ship-to-home

general cylinderheapar:

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

shipping cylinderheapar:

• service: Standard
• type: Fixed
• class: Standard
• cost: $0.00
• transit: 4-6 Days

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