Header Flanges

Header Flanges, Steel, 3/8 in. Thick, 2.0 in. Diameter Round Port, Chevy, Big Block, Pair

Part Number: SUM-670201

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

Header Flanges, 304 Stainless Steel, 304, 3/8 in. Thick, 1.75 in. Diameter Round Port, Chevy, LS, Pair

Part Number: SUM-670203-SS

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Header Flanges, Steel, 3/8 in. Thick, 1.75 in. Diameter Round Port, Chevy, LS, Pair

Part Number: SUM-670203

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

Header Flanges, 304 Stainless Steel, 3/8 in. Thick, 2.0 in. Diameter Round Port, Chevy, Big Block, Pair

Part Number: SUM-670201-SS

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Estimated Ship Date: Tomorrow

Header Flange, 3/8 in. Thickness, 2.500 in. Round Port, Stainless Steel, Big Block Chevrolet Header Bolt Pattern, Chevrolet, Big Block, Each

Part Number: KOK-7041-250-S

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FLANGE, FLANGE SBC 2" STAHL, 5/16'' TH

Part Number: SCH-0145-5

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Header Flanges, Steel, 3/8 in. Thick, 2.00 in. Diameter Round Port, Chevy, LS, Pair

Part Number: SUM-670202

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

Header Flanges, No Stubs, Steel, 0.375 in. Thick, 2 in. Port, Gaskets, Bolts, Chevy, Small Block, Pair

Part Number: PTE-H7895

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Header Flange, Stahl Pattern, 304 Stainless Steel, 0.375 in. Thick, 1.875 in. Primaries, Chevy Small Block, Each

Part Number: KOK-7034-S

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Header Flanges, Inner Flange, Aluminum, 0.250 in. Thick, 1.250 in. Port, Each

Part Number: SCH-0101

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Header Flanges, No Stubs, Steel, 0.375 in. Thick, 2.000 in. Port, Gaskets, Bolts, Pair

Part Number: PTE-H7899

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

Header Flanges, Header Flange Kits, Chevy Big Block Bolt Pattern, Steel, 0.375 in. Thick, 2.250 in. Port Size, Chevy, Big Block, Pair

Part Number: PTE-H7887

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Estimated Ship Date: Nov 27, 2026 if ordered today

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• Special Order

Header Flanges, No Stubs, Stainless, 0.375 in. Thick, 1.750 in. Port, Each

Part Number: KOK-7028-SA

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Estimated Ship Date: Dec 31, 2026 if ordered today

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Header Flanges, No Stubs, Steel, 0.313 in. Thick, 1.625 in. Round Port, Gaskets, Bolts, Pair

Part Number: PTE-H7864

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Header Flanges, Header Flange Kits, Chevy Big Block Bolt Pattern, Steel, 0.375 in. Thick, 2.125 in. Port Size, Chevy, Big Block, Pair

Part Number: PTE-H7886

Not Yet Reviewed

Estimated Ship Date: Nov 27, 2026 if ordered today

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Header Flanges, No Stubs, Steel, 0.375 in. Thick, 1.50 in. Port, Gaskets, Bolts, Chevy, 4.3L, Pair

Part Number: PTE-H7883

3.0 out of 5 stars ( 3 )

Estimated Ship Date: Nov 27, 2026 if ordered today

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Header Flanges, No Stubs, Stainless, 0.375 in. Thick, 2.125 in. Port, Each

Part Number: KOK-7040S

Not Yet Reviewed

Estimated Ship Date: Dec 31, 2026 if ordered today

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Header Flange, 304 Stainless Steel, 3/8 in. Thick, Subaru, EJ20, Pair

Part Number: VPE-14220S

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Estimated Ship Date: Tomorrow

Header Flanges, Outer Flange, No Stubs, Stainless, 0.375 in. Thick, 2.000 in. Port, Gaskets, Bolts, Each

Part Number: KOK-7011S

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Estimated Ship Date: Dec 31, 2026 if ordered today

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Header Flanges, Outer Flange, No Stubs, Stainless, 0.375 in. Thick, 1.750 in. Port, Gaskets, Bolts, Each

Part Number: KOK-7011CS

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Estimated Ship Date: Dec 31, 2026 if ordered today

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Header Flanges, No Stubs, Stainless, 0.375 in. Thick, 2.000 in. Port, Each

Part Number: KOK-7046-S2

Not Yet Reviewed

Estimated Ship Date: Dec 31, 2026 if ordered today

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Header Flange, Mild Steel, 1/2 in. Thick, Audi, 2.7T, 3.0L, Pair

Part Number: VPE-14627

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Header Flange, Mild Steel, 1/2 in. Thick, for Hyundai, Theta, Each

Part Number: VPE-14634

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Header Flange, Mild Steel, 1/2 in. Thick, Audi, Volkswagen, 1.8T, Each

Part Number: VPE-14618

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