JEGS 300155 Steel Tube Headers Gm Block 889944037903

( Brand: Jegs ), ( Part Type: Tube Header Block ), ( Manufacturer Part Number: 300155 ), ( Country Of Origin: Chn ), ( UPC: 889944037903 )

Review JEGS Stainless Steel Long Tube Headers Gm Truck Small Block fits 1973–1991

Introducing the 300155 Steel Tube Headers, meticulously engineered for 1973-1991 GM block engines. These headers are not just an upgrade, they represent a significant improvement in power and performance.

Crafted from premium 304 stainless steel, these headers are designed to withstand the test of time. The material's superior strength and resistance to corrosion ensure that they maintain their functionality and aesthetics, even in the harshest environments.

The 300155 Steel Tube Headers feature a 1.625-inch primary tube diameter, which provides optimal gas flow for maximum power gains. The tubes are mandrel-bent to ensure precise fitment and uniform bending, eliminating any restrictions or bottlenecks in the exhaust system.

These headers come with matched collectors, which help to reduce exhaust gas temperature and improve combustion efficiency. They also feature a 3-inch diameter collector outlet, which is larger than most stock collectors, allowing for a smoother exhaust flow.

The 300155 Steel Tube Headers are designed to be a direct replacement for stock headers, making for an easy and straightforward installation process. They come with all necessary hardware, including new gaskets, to ensure a secure and leak-free installation.

In summary, the 300155 Steel Tube Headers are a high-performance upgrade for your 1973-1991 GM block engine. They offer improved power, better exhaust flow, and enhanced durability, making them an essential addition for any serious performance enthusiast.

Buying 300155 steel tube headers for a 1973-1991 GM block engine comes with several pros and cons that are essential to consider before making a purchase.

1. Enhanced Performance: Steel tube headers can improve engine performance by providing better gas flow and increasing exhaust velocity, leading to increased horsepower and torque.

2. Durability: 300155 steel tube headers are known for their durability and strength, making them a popular choice for high-performance applications.

3. Improved Fuel Economy: By improving the flow of exhaust gases, steel tube headers can help improve fuel economy by reducing the engine's workload.

4. Customizability: Steel tube headers can be custom-built to fit specific engine configurations, allowing for greater flexibility in tuning and performance adjustments.

1. Expense: Steel tube headers can be more expensive than other header options, such as stainless steel or cast iron.

2. Installation Complexity: Installing steel tube headers can be more complex than other header types due to their customizability and the need for precise fitment.

3. Heat Management: Steel tube headers can generate more heat than other header types, which can require additional cooling measures to prevent damage to the engine.

4. Weight: Steel tube headers are heavier than other header options, which can add weight to the vehicle and potentially impact handling and fuel economy.

300155 steel tube headers offer several advantages for performance enthusiasts, including improved engine performance, durability, and customizability. However, they also come with some drawbacks, such as expense, installation complexity, heat management, and weight. Ultimately, the decision to purchase steel tube headers depends on individual priorities and budget constraints. If performance is the top priority, and the cost and installation complexities are manageable, then steel tube headers may be an excellent investment for a 1973-1991 GM block engine. Alternatively, if budget and installation complexity are significant concerns, other header options, such as stainless steel or cast iron, may be more suitable.

part # 300155 price

• $368.99

specifications maniheader:

• for years: 1973-1991
• brand: Jegs
• part type: Tube Header Block
• manufacturer part number: 300155
• country of origin: Chn
• upc: 889944037903

returns maniheader:

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

offer maniheader:

• quantity: 10
• started: May 31, 2026
• availability: In Stock
• options: Ship-to-home
• sold: 0

payments maniheader:

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

seller maniheader:

• rating: 99.5%
• # reviews: 633017

general maniheader:

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

shipping maniheader:

• service: Standard
• type: Fixed
• cost: $0.00
• transit: 3-5 Days
• class: Standard

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