Description
Overview
The Flowmaster Exhaust Flange is a header collector ball flange kit engineered to replace typical three-bolt flange-type connections on your exhaust system. Instead of relying on a traditional exhaust flange gasket to seal the joint, this ball-and-socket design creates a leak-free, gasket-free connection that flexes and seats precisely, giving you a durable exhaust system flange that holds up to the heat and vibration of high-performance driving.
Both ends feature inside diameter (I.D.) slip-fit connections, so your pipes nest cleanly for welding. Welding is required for installation, and the kit is sold in pairs so you have matching halves for a complete exhaust pipe flange connection. Bolts and studs are included, and the flange is reversible for flexible orientation during your build.
Key Benefits
Designed as a robust exhaust pipe connector, this ball flange eliminates the recurring headache of a worn exhaust donut gasket or a failing exhaust pipe gasket at the collector. The self-aligning ball surface takes the place of the gasket entirely, delivering a tight, repeatable seal every time you separate and reconnect the joint. For anyone chasing a clean, leak-free exhaust coupler solution, this is a straightforward upgrade over a standard bolt-and-gasket flange.
Built with aluminized 16-gauge material in a gray finish, the flange is rated High Performance and carries a 3/8 header flange thickness for strength where it matters. With a 3.00 inlet diameter and a 2.50 outlet diameter, both using straight pipe connection types, it slots into a wide range of custom and performance exhaust routings as a dependable exhaust pipe coupler.
Highlights
- Header collector ball flange that replaces typical three-bolt flange-type connections on the flange on your exhaust system
- Leak-free and gasket-free connection — no exhaust flange gasket or exhaust donut gasket required
- Inside diameter (I.D.) slip-fit connections on both ends for clean pipe fitment
- Aluminized, 16-gauge construction with a gray finish and 3/8 header flange thickness
- 3.00 inlet diameter, 2.50 outlet diameter, 3.00 height, straight pipe inlet and outlet connections
- Reversible design, bolts and studs included, and sold in pairs
Options & Fitment
This ball flange is available in various sizes to match different exhaust builds, so choose the configuration that fits your setup. As a flanged attachment with included hardware, it functions as both an exhaust pipe connector and a practical exhaust flange repair kit or exhaust pipe repair kit when you’re rebuilding a collector joint that used to depend on exhaust gaskets.
Whether you’re fabricating a new system or upgrading a leaky collector, the Flowmaster Exhaust Flange gives you a strong, serviceable exhaust pipe flange gasket alternative that welds in and stays sealed. Welding is required, and each order includes the matching pair needed to complete the connection.






