What material are these Edelbrock exhaust gaskets made from?

These gaskets are made from EnCore HTX-900, a composite material featuring graphite-coated fiber sheets bonded to an expanded steel core. This construction is designed for high heat resistance and durability.

Will these gaskets help if my header bolts loosen?

Yes, the gaskets have a 50% recovery rate. This means they can expand to maintain a seal even if the torque on your header bolts is reduced.

What is the port size on these gaskets?

The port size on these Edelbrock exhaust gaskets is 1.880 inches. This size is intended to match common exhaust manifold and header port dimensions for optimal flow.

Edelbrock Exhaust Gasket Set (2) Pontiac 389-455

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Specifications

Brand: Edelbrock
Part #: 7281
UPC: 85347072811

Edelbrock Exhaust Gasket Set (2) Pontiac 389-455

Name: Edelbrock Exhaust Gasket Set (2) Pontiac 389-455
Brand: Edelbrock
SKU: edelbrock-edelbrock-exhaust-gasket-set-2-pontiac-389-455-t14-126816
Price: 32.95 USD
Availability: BackOrder

$32.95

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Edelbrock exhaust gaskets for 1961-79 Pontiac V8 engines. Made with EnCore HTX-900 composite for high heat resistance and excellent sealing.

Key Features

Fits 1961-1979 Pontiac 326, 389, 400, 421, 428, and 455 V8 engines.
Constructed from EnCore HTX-900, a high-density non-asbestos fiber/metal core composite material.
Features graphite-coated, heat-resistant fiber blended sheets mechanically and chemically fused to an expanded steel core.
Provides high heat resistance and excellent load retention for a strong seal.
Offers a 50% recovery rate, allowing for gasket expansion if header bolt torque is lost.
Port size measures 1.880 inches, suitable for many exhaust manifold and header applications.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

When you're replacing exhaust manifolds or headers on your classic Pontiac V8, a good seal is crucial for performance and to keep exhaust fumes out of the cabin. These Edelbrock exhaust gaskets are built for that job, designed specifically for Pontiac engines from 1961 through 1979, covering displacements from 326 to 455 cubic inches.

These aren't your average paper gaskets. They're constructed from EnCore HTX-900, a well-built composite material that combines graphite-coated fiber sheets with an expanded steel core. This construction gives them high heat resistance and the ability to maintain a strong seal even if your header bolts loosen up a bit, thanks to a 50% recovery rate. The 1.880" port size is designed to match up with many popular exhaust manifold and header port openings, helping to ensure a free-flowing exhaust system.