GM 12739413 Intake Cover Insulator

( Brand: Gm ), ( Part Type: Intake Cover Insulator ), ( Color: Black ), ( Engine Size: 6.2 ), ( Items Included: Cover With Insulator ), ( Manufacturer Part Number: 12739413 )

Review GM Intake Cover Insulator fits LS3

The GM 12739413 LS3 Intake Cover Insulator is an essential component designed for the Chevrolet LS3 engine. This insulator plays a vital role in maintaining optimal engine temperature and performance by insulating the intake manifold and intake cover from the engine's cylinder heads.

Manufactured from high-quality materials, this intake cover insulator is engineered to provide superior insulation and durability. Its primary function is to minimize heat transfer between the intake manifold and the engine's cylinder heads, ensuring a consistent intake air temperature. As a result, the engine operates more efficiently, delivering improved performance and fuel economy.

This insulator features a precise fitment design, ensuring a perfect seal and fit with the LS3 engine's intake cover and manifold. The insulator's dimensions measure approximately 12.6 inches long, 8.3 inches wide, and 2.3 inches high, making it a direct replacement for the original part.

Installing the GM 12739413 LS3 Intake Cover Insulator is a straightforward process. It can be installed with common hand tools, making it a convenient solution for enthusiasts and professional mechanics alike. The insulator comes as a complete assembly, including the gasket material, ensuring a hassle-free installation experience.

In summary, the GM 12739413 LS3 Intake Cover Insulator is an essential upgrade for any LS3 engine. Its primary function is to insulate the intake manifold and cover from the engine's cylinder heads, resulting in improved engine performance, fuel economy, and consistent intake air temperature. With its precise fitment design, high-quality materials, and straightforward installation process, this intake cover insulator is an excellent investment for any Chevrolet LS3 engine enthusiast.

Pros and Cons of Buying GM 12739413 LS3 Intake Cover Insulator

The GM 12739413 LS3 Intake Cover Insulator is a crucial part in maintaining the performance and longevity of certain GM engines, particularly the LS3. This insulator is designed to help keep engine temperatures stable and reduce heat transfer, improving overall engine efficiency. In this analysis, we will discuss the potential advantages and disadvantages of purchasing this insulator.

1. Improved engine performance: The insulator can help keep engine temperatures more stable, leading to improved performance. This is especially important in high-performance applications where consistent engine temperatures are essential.

2. Enhanced durability: The insulator can help protect the engine from excessive heat, which can lead to increased longevity and reduced wear and tear.

3. OEM part: By purchasing an original equipment manufacturer (OEM) part like the GM 12739413 LS3 Intake Cover Insulator, you can ensure that it fits correctly and functions as intended.

1. Cost: OEM parts can be more expensive than aftermarket alternatives. This insulator may be a significant investment for some consumers.

2. Availability: Depending on your location and the availability of parts from your dealership or other suppliers, it may take some time to source and receive the part.

3. Installation: Installing the insulator can be a complex process, especially for those without mechanical expertise. It may be necessary to seek professional help or follow detailed instructions to ensure proper installation.

The GM 12739413 LS3 Intake Cover Insulator offers several advantages, including improved engine performance, enhanced durability, and the peace of mind that comes with purchasing an OEM part. However, it also comes with some disadvantages, such as cost, availability, and potential installation challenges. Ultimately, the decision to purchase this insulator depends on your specific needs, budget, and mechanical abilities.

If you're looking to improve the performance and longevity of your GM LS3 engine and have the budget for it, purchasing the GM 12739413 LS3 Intake Cover Insulator is a worthwhile investment. However, if cost is a concern or you're not confident in your ability to install the part, you may want to consider an aftermarket alternative or seeking professional advice. Regardless of your decision, thorough research and careful consideration are essential to ensure that you're making the best choice for your vehicle.

Details:

12739413 Intake manifold cover with insulator removed from brand new, never ran Chevrolet Performance LS3 crate engines.

part #: 12739413 price

• $108.23

specifications inputmanifolds:

• for models: Ls3
• brand: Gm
• part type: Intake Cover Insulator
• color: Black
• engine size: 6.2
• items included: Cover With Insulator
• manufacturer part number: 12739413

offer inputmanifolds:

• options: Ship-to-home
• started: April 9, 2026
• availability: In Stock
• quantity: 6
• sold: 0

returns inputmanifolds:

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

general inputmanifolds:

• condition: New other see details
• Car Truck Parts Accessories > Air Fuel Delivery > Intake Manifolds

seller inputmanifolds:

• rating: 100.0%
• # reviews: 463
• city: Niles, Ohio

shipping inputmanifolds:

• cost: $27.18
• type: Calculated
• service: UPS Ground
• transit: 4-8 Days
• carrier: UPS
• class: Standard

payments inputmanifolds:

• other
• credit card: Diners-club
• wallet: Paypal

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