Upgrade your Mopar 361-440 engine with the Mopar 361-440 Flng Kit 2.25in Port by HEDMAN. This high-quality flange kit is designed for easy installation and maximum performance. Made from durable steel, this header flange is 3/8 inches thick and features...

Header Flange - 0.375 in Thick - 1.554 x 1.886 in Rectangle Port - Steel - Small Block Chevy - Pair

Upgrade your Small Block Chevy engine with the SB Chevy 1.875in Flanges Round Port Outer Flange from HEDMAN. These durable header flanges are precision-crafted with a 0.375-inch thickness for optimal performance. With a 1.875-inch round port design,...

Header Flange - 0.375 in Thick - 2 in Round Port - Steel - Small Block Chevy - Pair

Header Flange - Inner Sub-Flange - 0.375 in Thick - 1 in Square Port - Steel - Small Block Chevy - Pair

Header Flange Adapter - 0.313 in Thick - 1.25 in Round Port - Aluminum - Small Block Chevy to Stahl Pattern - Pair