3-Inch Copper Exhaust Header Collector Gaskets, 3-Bolt Flange

Improve exhaust sealing with this 3-inch Copper Exhaust Header Collector Gasket Set, designed for compatible 3-bolt exhaust collector flanges. Built for durability in demanding exhaust environments, these gaskets help create a dependable seal between the header collector and exhaust system.

Featuring heavy-duty copper construction and an O-ring-style sealing design, these collector gaskets are suited for performance builds, engine restorations, and everyday driving applications. Their heat-resistant construction helps maintain a reliable seal under high-temperature operating conditions.

Designed for compatible Small Block Chevy (SBC), Big Block Chevy (BBC), and select 302, 350, 383, and 454 engine applications, this gasket set is a practical choice for replacing worn collector gaskets and helping reduce exhaust leaks.

Key Features

• 3-Inch Collector Fitment: Designed for compatible exhaust systems with 3-inch collector openings.
• 3-Bolt Flange Design: Provides secure installation on matching three-bolt collector flanges.
• Copper Construction: Built to handle demanding exhaust temperatures and repeated heat cycles.
• O-Ring-Style Seal: Designed to help create a secure seal at the header collector connection.
• Reusable Design: May be reused when the gasket remains in good condition and the manufacturer’s installation guidelines permit.
• Versatile Applications: Suitable for compatible SBC, BBC, 302, 350, 383, and 454 engine builds.
• Multiple Uses: Ideal for performance applications, restorations, and replacement of worn collector gaskets.

Product Specifications

Fitment Notes

Before ordering, verify the collector opening diameter, bolt-hole spacing, flange shape, and gasket dimensions against your existing exhaust components. Engine size alone does not guarantee compatibility.

For best results, install on clean, undamaged mating surfaces and follow the header or gasket manufacturer's installation instructions.

Frequently Asked Questions

Q: What exhaust collector size are these gaskets designed for?

A: They are designed for compatible 3-inch exhaust collector openings with a matching 3-bolt flange.

Q: Are these gaskets suitable for SBC and BBC engines?

A: They may fit compatible Small Block Chevy and Big Block Chevy setups, as well as select 302, 350, 383, and 454 applications. Confirm the flange dimensions before purchasing.

Q: Can the gaskets be reused?

A: Reuse may be possible if the gaskets remain undamaged and the manufacturer's guidelines allow it. Inspect them carefully before reinstalling.

Q: Will these gaskets help reduce exhaust leaks?

A: They are designed to provide a reliable seal at the header collector junction when correctly matched to the flange and properly installed.

Q: Will they fit every 3-inch, 3-bolt collector?

A: Not necessarily. Collector shape, bolt spacing, and gasket dimensions can vary, so confirm compatibility before installation.