CHEVROLET 12602040 Left Exhaust Manifold Gas 5.3

( Fitment Type: Direct Replacement ), ( Mounting Hardware Included: No ), ( Manufacturer Warranty: 30 Days ), ( Type: Left Exhaust Manifold ), ( Manufacturer Part Number: 12602040 ), ( Year: 2007 ), ( Engine Size: 5.3 ), ( Valvetrain Iteration: Ohv ), ( Transmission Type: Automatic ), ( Location Id: 277x314 ), ( Vehicle Id: 16292 )

Review CHEVROLET Left Exhaust Manifold 5.3 Gas fits SILVERADO 1500 1999–2013

The Chevrolet 12602040 is a high-performance exhaust manifold designed specifically for the 1999 to 2013 Silverado 1500 pickup trucks with a 5.3-liter gas engine. This exhaust manifold is a left-side component, making it suitable for installation on the driver's side of the engine.

This Chevrorolet-original part is engineered to meet or exceed OEM specifications, ensuring a perfect fit and optimal engine performance. It is manufactured using premium materials, including cast iron and high-strength steel, for durability and resistance to heat and corrosion.

The manifold features a robust design with six cylinder ports, each equipped with a fully-welded exhaust collector. This design allows for efficient exhaust gas flow, reducing backpressure and increasing engine efficiency. The exhaust ports are also equipped with integrated gasket surfaces, ensuring a leak-free seal and reducing the need for additional gaskets.

The exhaust manifold also comes with a factory-installed, heat shielded, and insulated exhaust flange. This feature helps to minimize underhood temperatures, providing added protection for other engine components and improving overall vehicle performance.

Additionally, the exhaust manifold is engineered to meet strict emissions standards, ensuring compliance with federal and local regulations. This makes it a perfect choice for drivers who demand both performance and environmental responsibility.

The Chevrolet 12602040 exhaust manifold is backed by General Motors' warranty, providing peace of mind and protection against manufacturing defects. Installing this exhaust manifold on your Silverado 1500 5.3 gas engine will not only improve its performance but also enhance its durability and longevity.

Buying a Chevrolet 12602040 left exhaust manifold for a 1999-2013 Silverado 1500 5.3L gas engine comes with both advantages and disadvantages. Let's examine each of them.

1. Replacement Part: This exhaust manifold is a direct replacement for the failed or damaged original part. It fits perfectly and restores the engine's exhaust system to its optimal condition.

2. Improved Performance: A new exhaust manifold allows gases to exit the combustion chamber more efficiently, improving engine performance and fuel efficiency.

3. Reduced Emissions: A properly functioning exhaust manifold helps reduce harmful emissions, making your vehicle more eco-friendly and environmentally friendly.

1. Cost: The price of a new exhaust manifold can be quite high, especially for a popular vehicle model like the Silverado 1500. However, the cost is justified given its importance in the vehicle's exhaust system.

2. Installation Complexity: Installing an exhaust manifold can be a complex process that requires specialized tools and knowledge. It may be best to have it installed by a professional mechanic to ensure proper installation and function.

3. Potential for Additional Repairs: When an exhaust manifold fails, it may indicate issues with other components in the exhaust system. These components may need to be inspected and repaired as well, which can add to the overall cost.

In conclusion, purchasing a Chevrolet 12602040 left exhaust manifold for a 1999-2013 Silverado 1500 5.3L gas engine is a necessary investment for maintaining the vehicle's performance and emissions. While the cost and installation complexity can be drawbacks, the benefits of improved performance and reduced emissions make it a worthwhile investment. It is recommended to have the part installed by a professional mechanic to ensure proper installation and function.

part # 12602040 prices

• $44.99-$70.00

specifications maniheader:

• for models: 1500, Silverado
• for makes: Chevrolet
• for years: 1999-2013
• fitment type: Direct Replacement
• mounting hardware included: No
• manufacturer warranty: 30 Days
• type: Left Exhaust Manifold
• manufacturer part number: 12602040
• year: 2007
• engine size: 5.3
• valvetrain iteration: Ohv
• transmission type: Automatic
• location id: 277x314
• vehicle id: 16292

offer maniheader:

• options: Ship-to-home
• started: November 18, 2025
• availability: In Stock
• sold: 0
• best offers: True
• quantity: 1

payments maniheader:

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

shipping maniheader:

• cost: $0.00
• class: Standard
• transit: 3-7 Days
• service: Standard
• type: Fixed

general maniheader:

• Car Truck Parts Accessories > Exhaust Emission Systems > Manifolds Headers
• condition: Used

returns maniheader:

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

seller maniheader:

• rating: 99.6%
• # reviews: 64579

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