12677840 GM GENUINE PARTS Cylinder Head

Review GM GENUINE PARTS Cylinder Head

GM OEM Cylinder Head (12677840)

The GM OEM Cylinder Head (12677840) is a premium quality replacement part designed specifically for select Chevrolet and GM vehicles. This cylinder head is an original equipment manufacturer (OEM) part, meaning it is an exact match to the original part that came with your vehicle.

Constructed from high-strength aluminum alloy, this cylinder head boasts superior durability and heat dissipation capabilities. The compact combustion chamber design promotes efficient fuel burning, resulting in improved engine performance and fuel economy. The cylinder head features four valves per cylinder, with each intake and exhaust valve operated by a single overhead camshaft.

The intake and exhaust ports on this cylinder head have been meticulously engineered for optimal flow and efficiency. The intake ports are designed to maximize air intake, ensuring optimal fuel-air mixture for efficient combustion. The exhaust ports, on the other hand, are designed to minimize back pressure and maximize exhaust flow, contributing to improved engine performance.

The cylinder head comes equipped with a state-of-the-art cooling system, featuring an intricate network of coolant passages that effectively distribute coolant throughout the engine. This cooling system ensures that the engine operates at optimal temperatures, preventing overheating and prolonging engine life.

The cylinder head also features advanced combustion technology, including spark plug pockets that are precision-machined to ensure a perfect fit for your spark plugs. This technology ensures a reliable ignition system, contributing to improved engine performance and longevity.

The GM OEM Cylinder Head (12677840) is backed by a comprehensive warranty, ensuring peace of mind for customers. This warranty covers defects in materials and workmanship, providing protection against manufacturing issues.

In summary, the GM OEM Cylinder Head (12677840) is a superior quality replacement part that delivers improved engine performance, durability, and efficiency. Its advanced design and manufacturing features make it an ideal choice for maintaining the optimal functioning of your Chevrolet or GM vehicle.

1. OEM Part: This cylinder head is an original equipment manufacturer (OEM) part, which means it's designed and built by General Motors to fit and function optimally in your vehicle.

2. Quality: As an OEM part, it's engineered to meet the highest standards of quality and performance. It may provide better durability and reliability compared to aftermarket alternatives.

3. Fitment: The GM 12677840 cylinder head is specifically designed for your vehicle, ensuring a perfect fit and minimizing the potential for installation issues.

4. Warranty: OEM parts often come with the manufacturer's warranty, offering peace of mind and protection against defects.

5. Performance: A new cylinder head can improve engine performance by restoring lost compression, reducing leaks, and ensuring proper fuel and air mixture.

1. Cost: OEM parts, including cylinder heads, tend to be more expensive than aftermarket alternatives.

2. Availability: Depending on the specific make, model, and year of your vehicle, the GM 12677840 cylinder head may not be readily available at local parts stores or dealerships.

3. Installation: Installing an OEM cylinder head may require specialized tools and expertise, potentially adding to the overall cost and time investment.

4. Lead Time: Due to their popularity and production demands, OEM parts may take longer to be shipped and received compared to aftermarket alternatives.

The decision to buy a GM 12677840 cylinder head ultimately depends on your priorities and circumstances. If you value the highest level of quality, performance, and a perfect fit, an OEM cylinder head may be the best choice for you, despite the higher cost and potential installation challenges. However, if you're working with a limited budget or time constraint, an aftermarket alternative may be a more feasible option.

Before making a decision, consider researching both OEM and aftermarket cylinder head options to weigh their pros and cons based on your specific needs and budget. Consulting with a professional mechanic or dealership can also provide valuable insights and guidance.

Details:

Gm regularly updates production and service part designs to integrate new materials technologies. Some Gm genuine parts may have formerly appeared as AcDelco original equipment OE. Manufacturer Gm genuine parts. Gm engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle.

Item model number 12677840. Manufacturer part number 12677840.

specifications compressorshow:

• brand: Gm Genuine Parts
• mpn: 12677840
• part type: Cylinder Head
• included components: Engine Cylinder Head Assembly
• model name: Gm Original Equipment
• automotive fit type: Vehicle Specific Fit
• exterior finish: Machined
• upc: 195491297234
• package dimensions lxwxh: 21.14x8.7x6.73 Inches
• weight: 23.37 Pounds

shipping compressorshow:

• class: standard
• transit: 3-5 days
• type: fixed
• carrier: ups
• service: ups ground

general compressorshow:

• category: Business & Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Blowers > Air Compressors

returns compressorshow:

• policy: returns accepted
• method: money back
• paid by: seller
• time: 30 days

payments compressorshow:

• other
• credit card: diners-club
• wallet: google-pay

seller compressorshow:

• city: phoenix, az
• # reviews: 162
• rating: 97.6%

offer compressorshow:

• options: ship-to-home
• in stock #: 5
• availability: in stock
• sold #: 10
• prices: $174.99–$591.12
• item condition:
  • New
  • Used
  • Remanufactured
• started: march 2, 2026