Description
Overview
The Flowmaster Header Collector Ball Flange Kit is a precision-engineered exhaust connection designed to replace typical three-bolt flange-type joints. Using a ball-and-socket style interface, this kit delivers a leak-free and gasket-free connection between your header collector and exhaust system, eliminating a common failure point where flat flanges and gaskets tend to leak over time. Built as a high-performance component from the exhaust experts at Flowmaster, it brings a cleaner, more durable seal to custom and performance exhaust builds.
Each kit is constructed from aluminized steel in a gray finish with a robust 16-gauge material body and a substantial 3/8-inch header flange thickness. This combination provides the strength and heat resistance you want at the collector, where exhaust temperatures and vibration are highest. The reversible design and included bolts/studs make installation straightforward for the fabricator, while the ball flange geometry allows a small degree of alignment flexibility that flat flanges simply can’t offer.
Key Benefits
Unlike traditional gasketed connections that can blow out or loosen, the ball flange design mates two machined surfaces for a tight, self-aligning seal. That means fewer exhaust leaks, a quieter connection, and a joint that holds up to the demands of a performance driveline. Both ends feature slip-fit, straight-pipe connections — one sized at a 3.50-inch inside diameter inlet and the other at a 3.00-inch outlet — so the kit integrates cleanly into a custom exhaust routing.
- Ball-and-socket flange replaces standard three-bolt connections for a leak-free, gasket-free seal
- 3.50-inch inside diameter inlet and 3.00-inch inside diameter outlet, both with slip-fit connections
- Heavy-duty 16-gauge aluminized steel construction with a 3/8-inch flange thickness
- Reversible design with bolts and studs included
- Straight-pipe inlet and outlet connection types for versatile routing
- 3.00-inch height, gray aluminized finish, Emission Code 5
Options & Fitment
This header collector ball flange kit is sold in pairs, making it ideal for dual-exhaust and header applications where both sides need a matched, reliable connection. It is available in various sizes to suit different collector and pipe diameters, so choose the configuration that matches your exhaust plumbing. Welding is required for installation, allowing you to permanently integrate the flange into your pipework for a factory-tight, custom-fit result.
As a member of Flowmaster’s brackets, flanges and hangers lineup, this kit is the right choice for builders who want to eliminate nagging collector leaks and upgrade to a stronger, more serviceable joint. Whether you’re finishing a fresh header install or rebuilding an aging exhaust connection, the ball flange design delivers durable, gasket-free performance where it matters most.
