Exhaust Header for 1999-2006 Chevy Avalanche/Suburban/Tahoe GMC Sierra/Yukon GMT800 4.8L 5.3L 6.0L V8 Engine （with EGR Valve）

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Upgrade your vehicle’s performance with the FLASHARK Exhaust Header, designed for the 1999-2005 Chevy Avalanche, Chevy Suburban, Chevy Tahoe, GMC Sierra, and GMC Yukon GMT800 models. This exhaust header is specifically built for 4.8L, 5.3L, and 6.0L V8 engines, helping to improve airflow and reduce back pressure. By giving each cylinder its own exhaust pipe, it prevents exhaust interference, boosting horsepower and engine efficiency. The durable 201 stainless steel construction with a mirror-polish finish ensures both performance and style. Ideal for anyone looking to unlock the full potential of their V8 engine, whether on the street or the track.

Fitment:

• 2002-2006 Chevy Avalanche 1500 5.3L, 6.0L V8 
  
• 2000-2004 Chevy Suburban 1500 4.8L, 5.3L, 6.0L V8 
  
• 2000-2004 Chevy Tahoe 4.8L, 5.3L, 6.0L V8 
  
• 2000-2004 GMC Yukon XL 1500 4.8L, 5.3L, 6.0L V8 
  
• 1999-2006 GMC Sierra 4.8L, 5.3L, 6.0L V8 
  
• 2001-2004 GMC Yukon 4.8L, 5.3L, 6.0L V8 (except 2003 GMC Yukon SLT Sport Utility 4-Door 5.3L) 

Specifications:

Brand Name: FLASHARK
Certificate: ISO9001:2000
Application: Automobile Exhaust Header
Material: 201 Stainless Steel
Surface: Mirror Polish
Model: EH28136
Color: Same as the pictures show

Air Intake Details:

Outlet Size: 3.00"
Filter: Inner Diameter: 4.00", Overall Height: 10.50"
Aluminum Charge Pipe: 3.75" Inlet / Outlet
High Heat Tolerance Silicone Hoses: 3.75" Inlet / Outlet

Header Exhaust Details:

Inlet/ Outlet: 1.875" (8 * Manifold Ports)/ 2.5" (Outer Diameter)
Main Piping Diameter: 2.5"

Feature:

1. Getting more air into your engine and more exhaust out is the key to a performance motor. That's where exhaust headers are significant as the first revenue of an exhaust system. Exhaust performance headers manipulate the airflow with the performance-robbing exhaust manifold that comes with your car.
2. Headers provide each cylinder with its mini exhaust pipe, which means exhaust headers prevent interference among cylinders; thus, the back pressure that occurs in common exhaust manifolds. When cylinders don't have to fight with each other to expel their exhaust, they can put more power through the wheels, pushing the vehicle. Combining with a high-performance cold air intake, and a cat-back exhaust system, a header system removes all restrictions of your engine, then, it can perform at its full potential.

Delivery:  

Free Shipping  
Shipping Time: Estimated in 3-5 Working Days 

Exhaust header VS manifold, which is the better choice? 

When comparing exhaust header and manifolds, the key differences lie in material, size, and performance. Exhaust headers, made from lighter, thinner steel, are longer and more efficient than the thick iron exhaust manifolds typically found in stock engines. Manifolds tend to create back pressure, which can reduce engine performance. However, exhaust headers are designed to give each cylinder its own exhaust pipe, allowing gases to exit freely without causing back pressure. This results in improved horsepower and better engine efficiency.

For vehicles like the 1999-2005 Chevy Avalanche, Suburban, Tahoe, and GMC Sierra, Yukon, upgrading from stock manifolds to performance exhaust headers is a significant improvement. With the FLASHARK Exhaust Header, you’ll experience a boost in engine performance and a more aggressive exhaust note. Whether you’re cruising on the road or pushing your vehicle to the limit, this upgrade unlocks the full potential of your 4.8L, 5.3L, and 6.0L V8 engines. The direct bolt-on design makes installation hassle-free—no modifications needed. 

FAQ

Q: Will these fit a 4-wheel drive (4WD) vehicle?

A: Yes, these exhaust headers are compatible with both 2WD and 4WD vehicles from the 1999-2006 GMC/Chevy GMT800 series with a V8 engine.

Q: Are these catalytic converters included with the headers?

A: No, these exhaust headers are catless and do not include catalytic converters.

Q: What is the exhaust pipe diameter for this header set?

A: The inlet/outlet diameter is 1.875" for the manifold ports and 2.5" for the outer diameter. The main piping diameter is 2.5".

Q: Will these exhaust headers pass emissions in California?

A: These headers are designed for off-road use only and may not pass California emissions regulations due to the absence of catalytic converters.