3-Bolt Stainless Steel Exhaust Flange 2.5in

The 3-Bolt Stainless Steel Exhaust Flange 2.5in by Vibrant Performance is a precision collector flange engineered for custom exhaust system fabrication and high-performance engine builds. Designed for professionals and serious enthusiasts who demand quality in every component, this exhaust flange serves as the critical junction point between primary pipes and collector systems. Whether building a street performance engine, race-oriented power plant, or restoration project, a properly specified collector flange ensures leak-free sealing and structural integrity under thermal cycling and exhaust gas pressure.

Constructed from premium stainless steel and finished in natural mill state, this flange features a 2.5-inch ID (internal diameter) opening with 0.375-inch thickness for robust load handling and heat resistance. The 3-bolt mounting pattern provides secure fastening with standard automotive hardware, allowing repeatable alignment and controlled torque sequencing during installation. Stainless steel construction resists corrosion from exhaust heat cycling, moisture, and chemical exposure far longer than mild steel alternatives, extending component lifespan and maintaining appearance across seasons. The natural finish requires minimal maintenance when properly installed with quality gaskets and hardware.

Professional fabricators, engine builders, and custom exhaust technicians rely on Vibrant Performance flanges for bolt-on reliability and dimensional consistency. This collector flange integrates seamlessly into modular exhaust systems where primary tubes converge before entering a single collector pipe, making it ideal for multi-cylinder engines ranging from V6 to V8 configurations. Verify your existing primary pipe OD and collector inlet sizing before ordering to ensure proper fit; working with experienced fabrication shops or consulting vehicle-specific build guides will optimize installation success and system performance.