Header Flanges

Header Flanges, 304 Stainless Steel, 3/8 in. Thick, Chevy Big Block, Fits 2.25 in. Primaries, Pair

Part Number: STW-HFBBC225

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Estimated Ship Date: Monday 12/29/2025

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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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Estimated Ship Date: Monday 12/29/2025

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: Monday 12/29/2025

Header Flanges, Steel, 3/8 in. Thick, 1.84 in. x 1.54 in. Oval Port, Chevy, Small Block, Pair

Part Number: SUM-670200

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Monday 12/29/2025

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: Monday 12/29/2025

Header Flanges, 304 Stainless Steel, 3/8 in. Thick, 1.84 in. x 1.54 in. Oval Port, Chevy, Small Block, Pair

Part Number: SUM-670200-SS

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 12/29/2025

Header Flanges, Carbon Steel, 3/8 in. Thick, Ford Small Block, Fits 1.875 in. Primaries, Pair

Part Number: STW-HFSBFBTADAPT

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/29/2025

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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: Monday 12/29/2025

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

Part Number: SUM-670201-SS

Not Yet Reviewed

Estimated Ship Date: Monday 12/29/2025

Header Flange, 304 Stainless Steel, 3/8 in. Thick, Chevy LS, Pair

Part Number: VPE-14332

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Estimated Ship Date: Monday 12/29/2025

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Header Flanges, 304 Stainless Steel, 3/8 in. Thick, Chevy Big Block, Fits 2 in. Primaries, Pair

Part Number: STW-HFBBC200

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Estimated Ship Date: Feb 26, 2026 if ordered today

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Header Flanges, 304 Stainless Steel, 3/8 in. Thick, Ford Big Block, Fits 2.25 in. Primaries, Pair

Part Number: STW-HFBBF1225

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Estimated Ship Date: Monday 12/29/2025

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Header Flanges, No Stubs, Steel, 0.375 in. Thick, 2.125 in. Port, Gaskets, Bolts, Ford, 390-428 FE, Pair

Part Number: PTE-H7829

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Estimated Ship Date: Jan 16, 2026 if ordered today

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Header Flanges, 304 Stainless Steel, 3/8 in. Thick, Chevy Small Block, Fits 1.75 in. Primaries, Pair

Part Number: STW-HFSBCSQ175

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/29/2025

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Header Flanges, 304 Stainless Steel, 3/8 in. Thick, Ford Small Block, Fits 1.625 in. Primaries, Pair

Part Number: STW-HFSBF1

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Estimated Ship Date: Mar 2, 2026 if ordered today

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Header Flanges, 304 Stainless Steel, 3/8 in. Thick, Chevy Big Block, Fits 2.125 in. Primaries, Pair

Part Number: STW-HFBBC212

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Estimated Ship Date: Monday 12/29/2025

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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: Monday 12/29/2025

Header Flanges, 304 Stainless Steel, 3/8 in. Thick, Chevy Small Block, Fits 1.875 in. Primaries, Pair

Part Number: STW-HFSBCSQ1875

Not Yet Reviewed

Estimated Ship Date: Monday 12/29/2025

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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: Monday 12/29/2025

Header Flange, 304 Stainless Steel, 3/8 in. Thick, for use on Honda® Civic Si, K24, Each

Part Number: VPE-14224

Not Yet Reviewed

Estimated Ship Date: Monday 12/29/2025

Header Flanges, Stock Bolt Pattern, Steel, Rectangular Port, 0.375 in. Thick, Chrysler, Big Block, Pair

Part Number: PTE-H7828

Not Yet Reviewed

Estimated Ship Date: Jan 16, 2026 if ordered today

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Flange Big Block Chevrolet

Part Number: KOK-7041-250-S

Not Yet Reviewed

Estimated Ship Date: Monday 12/29/2025

Header Flanges, No Stubs, Steel, 0.375 in. Thick, 1.625 in. Port, Gaskets, Bolts, Pair

Part Number: PTE-H7831

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Estimated Ship Date: Jan 19, 2026 if ordered today

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Header Flanges, 304 Stainless Steel, 3/8 in. Thick, Ford Small Block, Fits 1.75 in. Primaries, Pair

Part Number: STW-HFSBF2

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Estimated Ship Date: Monday 12/29/2025

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