Bull Boost Performance D-Series 1018 Steel Exhaust Header Flange
Build your next exhaust header or turbo manifold with confidence using the Bull Boost Performance D-Series 1018 Steel Exhaust Header Flange. Precision CNC-machined in the USA from premium 1018 mild steel, this flange is engineered for fabricators and performance enthusiasts who demand exceptional fitment, strength, and long-term reliability.
Featuring a fully machined 3D port design, this flange provides a smooth transition from the exhaust port to your manifold runners, helping reduce turbulence while simplifying fabrication. The heavy-duty 1/2-inch thick construction resists warping under extreme heat and high-boost applications, making it an ideal choice for naturally aspirated, turbocharged, street, race, and drag racing builds.
Unlike thin laser-cut alternatives, this flange is manufactured to professional fabrication standards and designed to work with both 1.5-inch Schedule 10 and 1.5-inch Schedule 40 tubing.
Engineering & Construction
Precision CNC Machined 1018 Steel
Manufactured from high-quality 1018 mild steel for superior weldability, strength, and durability.
3D Port Machining
Features precision-machined port entries designed to provide a smooth runner transition and professional fabrication finish.
Heavy-Duty 1/2" Thick Design
Built to withstand extreme exhaust temperatures while minimizing flange distortion and gasket sealing issues.
Fabricator Approved
Compatible with MIG and TIG welding processes and designed specifically for custom header and turbo manifold construction.
Specifications
- Material: 1018 Mild Steel
- Thickness: 0.500" (12.7mm)
- Overall Length: Approximately 12.0" (304.8mm)
- Port Opening Height: Approximately 1.85"–1.90" (47–48mm)
- Port Opening Width: Approximately 1.50"–1.55" (38–39mm)
- Tube Compatibility: 1.5" Schedule 10 & Schedule 40
- Manufacturing Process: CNC Machined
- Finish: Raw Machined Steel
- Country of Manufacture: USA
Features
- CNC-machined in-house
- Premium 1018 steel construction
- Precision 3D port design
- 1/2" thick heavy-duty flange
- Excellent weldability
- Ideal for turbo manifolds and custom headers
- High-temperature resistant design
- Improved sealing surface for gasket reliability
- Designed for professional fabrication applications
- Made in the USA
Applications
- Custom turbo manifold fabrication
- Performance exhaust header fabrication
- Drag racing builds
- Road racing applications
- High-performance street vehicles
- Naturally aspirated and forced induction projects
Package Includes
- (1) D-Series 1018 Steel Exhaust Header Flange
Installation Notes
Professional fabrication and welding are recommended. Verify measurements and intended application prior to purchase. Tubing, hardware, and gaskets are sold separately unless otherwise stated.
The Bull Boost Performance D-Series Exhaust Header Flange is engineered for builders who refuse to compromise on quality, delivering the precision, durability, and fabrication-friendly design required for serious performance projects.
