CHEVROLET 12559864 Engine Cylinder Head 4.8

( Manufacturer Part Number: 12559864 ), ( Part Type: Engine Cylinder Head ), ( Manufacturer Warranty: 90 Day ), ( Genuine Oem: Yes ), ( Seller Notes: 4.8, Efi ), ( Interchange Item Code: 306 ), ( Color: Champagne ), ( Reference Oe/oem: 12559864, 12561706, 12563680, 12578925, 706, 8125636800, 8125789250 )

Review CHEVROLET Used Engine Cylinder Head Pickup 4.8 Grade fits SILVERADO 1500 2007

The **Chevrolet 12559864 Engine Cylinder Head** is a precision-engineered component designed specifically for the **2007 Chevrolet Silverado 1500** equipped with the **4.8L V8 (L36) engine**, ensuring optimal performance, reliability, and longevity. This high-quality cylinder head is meticulously crafted to meet or exceed OEM specifications, featuring a robust **cast iron construction** that balances durability with thermal efficiency. The head incorporates **four valves per cylinder** (two intake and two exhaust) arranged in a **pent-roof design**, allowing for improved airflow and better combustion efficiency, which translates to enhanced horsepower and torque output. The **intake and exhaust ports** are precisely machined to optimize the engine s breathing capacity, reducing backpressure and improving overall engine response. Additionally, the cylinder head includes **integrated valve guides, valve seats, and a high-quality gasket surface**, ensuring a secure seal when paired with the corresponding head gasket. This component is compatible with the **L36 engine s pushrod valve train**, featuring **hydraulic lifters** for smooth operation and minimal wear. Whether replacing a worn or damaged head, upgrading for performance tuning, or restoring an engine to factory specifications, this cylinder head delivers the precision and performance expected from a genuine Chevrolet replacement part. Built to withstand the demands of heavy-duty towing, hauling, and daily driving, it is an essential component for maintaining the integrity and efficiency of the 4.8L V8 in your Silverado 1500.

### **Pros and Cons of Buying a Chevrolet 4.8L V8 Cylinder Head (Part Number 12559864) for a 2007 Silverado 1500**

1. **Direct OEM Fitment** This cylinder head is a genuine Chevrolet part designed specifically for the 4.8L V8 engine found in the 2007 Silverado 1500. It ensures proper sealing, valve timing, and overall performance without modification.

2. **Reliability and Durability** Chevrolet s 4.8L engine is known for its robustness, and using an original cylinder head helps maintain the engine s structural integrity. It is built to withstand the stress of daily driving and moderate towing.

3. **Ease of Installation** Since it is an exact replacement, installation is straightforward if you have basic mechanical skills or access to a mechanic. No major modifications to the engine or surrounding components are typically required.

4. **Warranty Coverage** If purchased new or from an authorized dealer, this part may still carry a limited warranty, providing peace of mind against manufacturing defects.

5. **Compatibility with Aftermarket Upgrades** While not necessary, this head can be paired with aftermarket components like performance camshafts, intake manifolds, or exhaust systems if you plan to modify the engine later.

6. **Cost-Effective for Minor Repairs** If the issue is isolated to the cylinder head (e.g., warped head, cracked gasket, or valve issues), replacing just the head is often cheaper than a full engine rebuild or replacement.

7. **Mainstream Availability** Chevrolet s 4.8L parts are widely available through dealerships, online marketplaces, and auto parts stores, making it easier to source replacements or additional components if needed.

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1. **Potential for Wear or Damage** If the cylinder head is being replaced due to failure (e.g., cracked casting, burnt valves, or warping), the underlying cause (e.g., overheating, lack of maintenance, or coolant leaks) may persist. Addressing the root issue is critical to prevent future problems.

2. **Age of the Engine Design** The 4.8L V8 is an older engine architecture (introduced in the late 1990s) and lacks some modern efficiency or power improvements found in newer V8s. It may not perform as well as a turbocharged or direct-injection engine in terms of fuel economy or power output.

3. **Limited Performance Potential** Without significant modifications (e.g., forced induction, high-flow heads, or tuning), the 4.8L will not deliver high horsepower or torque. It is best suited for stock or mild performance applications.

4. **Potential for Gasket or Seal Issues** The cylinder head gasket or valve cover gasket can fail over time, leading to leaks or compression loss. Replacing the head may not resolve these issues if the gaskets are compromised.

5. **Cost of Labor** While the part itself may be affordable, labor costs for removal, installation, and reassembly (especially if the engine must be disassembled) can add up, particularly if done by a professional.

6. **Environmental and Emissions Concerns** Older engines like the 4.8L may not meet modern emissions standards if modified aggressively. This could result in check engine lights or failure of emissions tests in some regions.

7. **Depreciation and Resale Value** The 2007 Silverado 1500 with a 4.8L engine is not a high-value vehicle, and parts like cylinder heads may not retain significant resale value if the engine is not well-maintained.

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Replacing the cylinder head in a 2007 Chevrolet Silverado 1500 with a 4.8L V8 using part number **12559864** is a practical solution for addressing specific engine issues such as warping, cracking, or valve problems. The part offers direct compatibility, reliability, and ease of installation, making it a sound choice for minor repairs. However, it is essential to diagnose the root cause of the failure (e.g., overheating, coolant leaks, or poor maintenance) to prevent recurring problems. Additionally, while the 4.8L engine is durable, it is not designed for high-performance applications, and significant modifications may require additional components beyond just the cylinder head.

If the vehicle is primarily used for daily driving, light towing, or basic hauling, this replacement is a reasonable investment. For those seeking better fuel efficiency or power, upgrading to a more modern engine (e.g., a turbocharged 6.2L V8 or diesel) may be worth considering in the long run.

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- The issue is isolated to the cylinder head (e.g., warping, cracked casting, or valve damage).

- You have confirmed that the engine s other components (e.g., pistons, rods, and bearings) are in good condition.

- You are prepared to address any underlying causes (e.g., cooling system leaks, oil changes, or gasket failures).

- You plan to keep the vehicle for the long term and do not intend to modify it aggressively.

- The engine has widespread internal damage (e.g., seized valves, worn bearings, or cracked blocks).

- You are looking for better fuel economy or performance, in which case a more modern engine swap may be preferable.

- The vehicle has high mileage and poor maintenance history, making a cylinder head replacement a temporary fix rather than a permanent solution.

- New head gaskets, valve seals, and bolts (often recommended during replacement).

- Coolant flush and inspection of the cooling system.

- Professional labor if you lack mechanical experience.

Ultimately, this replacement is a cost-effective and reliable choice for restoring the functionality of a 2007 Silverado 1500 s 4.8L engine, provided the repair is performed correctly and the engine s overall condition is assessed thoroughly.

Details:

Superseded Part Numbers This item may have been superseded from a different part number this manufacturer. Orders placed after 2:00 pm CST cannot be guaranteed shipping that day. Used Engine Cylinder Head. Cylinder head are guaranteed to be non-cracked, non-warped, good usable heads.

part #: 12559864 prices

• $199.99-$224.85

specifications cylinderheapar:

• for models: 1500, Silverado
• for makes: Chevrolet
• for years: 2007
• mpn: 12559864
• part type: Engine Cylinder Head
• manufacturer warranty: 90 Day
• genuine oem: Yes
• seller notes: 4.8, Efi
• interchange item code: 306
• color: Champagne
• reference oe/oem: 12559864, 12561706, 12563680, 12578925, 706, 8125636800, 8125789250

returns cylinderheapar:

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

offer cylinderheapar:

• options: Ship-to-home
• sold: 0
• started: May 6, 2026
• availability: In Stock
• quantity: 1

shipping cylinderheapar:

• carrier: FedEx, USPS
• class: Standard, Expedited
• transit: 2-5 Days
• service: FedEx Ground / FedEx Home Delivery, USPS Priority Mail, USPS Ground Advantage
• type: Fixed
• cost: $0.00

seller cylinderheapar:

• city: Mobile, Alabama
• # reviews: 6711
• rating: 99.4%

general cylinderheapar:

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

payments cylinderheapar:

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

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