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Mr. Gasket Ultra-Seal Exhaust Gaskets 5966 Gaskets, Header, Ultra-Seal, Round Port, Chevy, 6.0, 6.2, 7.0L, Pair

Mr. Gasket Ultra-Seal Exhaust Gaskets 5966 Gaskets, Header, Ultra-Seal, Round Port, Chevy, 6.0, 6.2, 7.0L, Pair

A$129.51
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

Mr. Gasket Ultra-Seal exhaust gaskets are designed and constructed to improve the sealing of exhaust header flanges. Unlike standard exhaust gasket material, Ultra-Seal gaskets incorporate a graphite-impregnated facing and a steel-expanded metal core that reinforces and increases their tensile strength. This allows the gaskets to conform to warped flanges, giving them better sealing capabilities without deteriorating or cracking under the excessive heat and pressure that's common in exhaust systems. Ultra-Seal gaskets are available for a wide range of port styles and sizes.

Additional features and benefits:

* Expanded steel core provides stability and maximum torque retention to eliminate gasket failure
* Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head
* High-recovery material allows header or manifold flange to stay sealed if flange loses clamp-load
* Can be trimmed for modified port applications
* Designed for OE replacement, high performance street, drag race, road racing, and oval track use

Part Type

Exhaust Gasket GM LS 2/LS3

Data: v4.2 - Upd: 2026-10-14 09:40:37

Specifications

Product Attributes - Brand
Mr. Gasket
Product Attributes - Manufacturer's Part Number
5966
Product Attributes - Part Type
Header and Exhaust Manifold Gaskets
Product Attributes - Product Line
Mr. Gasket Ultra-Seal Exhaust Gaskets
Product Attributes - UPC
084041025895
Product Attributes - Port Style
Round
Product Attributes - Gasket Material
Steel core laminate
Product Attributes - Port Height (in.)
1.920
Product Attributes - Port Width (in.)
1.920
Product Attributes - Quantity
Sold as a pair.

Reference Information

Brand Name/s Mr. Gasket
StreetFX SKU mrg5966
SFX Item ID 4982461
Supplier Item Code 4982461
Manufacturer SKU 5966
Manufacturer UPC 84041025895
Alternative References 7.0L

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year2005
    Ending Year2019
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.0L/364
  • MakeCHEVROLET
    Beginning Year2006
    Ending Year2015
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size7.0L/427
  • MakeCHEVROLET
    Beginning Year2010
    Ending Year2017
    Engine TypeV8
    Engine FamilyChevy small block Gen III/IV (LS-based engines)
    Engine Size6.2L/376

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