2.5-Inch Copper Header Collector Gasket Set – Certified Automotive Experts

Reusable Copper Collector Gaskets for 3-Bolt Exhaust Flanges

Create a reliable exhaust seal with the Certified Automotive Experts 2.5-Inch Copper Header Collector Gasket Set. Made from solid copper and designed for compatible 3-bolt header collector flanges, these reusable gaskets feature an integrated O-ring ridge to help prevent exhaust leaks and maintain a secure seal under high-temperature conditions.

With a 2.5-inch collector opening and 3.3-inch center-to-center bolt spacing, these gaskets are suitable for compatible LS, Small Block Chevy (SBC), and Big Block Chevy (BBC) exhaust setups. Their reusable copper construction offers a durable alternative to conventional collector gaskets without requiring additional sealant.

Key Features

• Solid Copper Construction: Designed to withstand high exhaust temperatures and resist warping.

• Reusable Design: Built for repeated installation and removal when properly maintained.

• 2.5-Inch Collector Size: Designed for compatible 2.5-inch exhaust header collectors.

• 3-Bolt Flange Compatibility: Fits compatible 3-bolt collector flanges with 3.3-inch center-to-center spacing.

• O-Ring Ridge Design: Helps create a secure sealing surface and reduce exhaust leaks.

• No Sealant Required: Designed for installation without additional gasket sealant.

• Wide Application Range: Suitable for compatible LS, SBC, and BBC exhaust setups.

Product Features & Specifications

Compatible Applications

Designed for compatible 2.5-inch, 3-bolt exhaust header collector setups, including:

• LS engine builds

• Small Block Chevy (SBC) applications

• Big Block Chevy (BBC) applications

• Compatible 302, 350, 383, and 454 engine builds

Important: Engine displacement alone does not confirm gasket fitment. Verify the collector opening, 3-bolt flange pattern, and 3.3-inch center-to-center bolt spacing before ordering.

Copper Construction & Heat Resistance

Manufactured from solid copper, these collector gaskets are designed to handle high exhaust temperatures while providing a durable sealing surface. Their reusable construction makes them suitable for performance exhaust systems that may require future servicing or removal.

O-Ring Ridge Sealing Design

Each gasket features an integrated O-ring ridge designed to improve sealing contact between the header collector and exhaust connection. This helps reduce exhaust leakage and supports a secure fit without requiring additional sealant.

What's Included

• 2 x 2.5-Inch Copper Header Collector Gaskets

Frequently Asked Questions

What size header collectors do these gaskets fit?
They are designed for compatible 2.5-inch header collector openings with 3-bolt flanges.

What is the bolt spacing?
The gaskets are designed for 3-bolt flanges with 3.3-inch center-to-center spacing.

Are these gaskets reusable?
Yes. Their copper construction allows them to be reused when properly maintained and in suitable condition.

Do these collector gaskets require sealant?
No. They are designed to install without additional gasket sealant.

Are they compatible with LS, SBC, and BBC engines?
They are suitable for compatible LS, Small Block Chevy, and Big Block Chevy exhaust setups. Confirm the collector dimensions and bolt pattern before purchasing.

How many gaskets are included?
The set includes two 2.5-inch copper header collector gaskets.

Fitment & Installation Notes

• Designed for 2.5-inch exhaust collector openings.

• Requires a compatible 3-bolt flange with 3.3-inch center-to-center bolt spacing.

• Verify flange pattern and collector dimensions before ordering.

• Clean mating surfaces before installation.

• No additional sealant is required.

• Inspect gaskets before reuse to ensure they remain in suitable condition.