Brand: Airflow Research (AFR) Manufacturer's Part Number: 6858 Part Type: Header and Exhaust Manifold Gaskets Product Line: AFR Exhaust Header Gaskets Automotive Fittings Part Number: AFR-6858 Port Style: Round large port Gasket Material: Steel core laminate Port Height (in.): 2.130 Port Width (in.): 2.130 Quantity: Sold as a set. Description: AFR exhaust header gaskets are made from high-temperature, high-density fiber material around a perforated steel core for durability and heat resistance. They feature a specially designed coating for easy removal—and no sticking to the cylinder head, header, or exhaust manifold. Order the gaskets tailored for fitment on your vehicle application.