Availability
Headers
Header Bolts, Hex Head, 3/8 in. Wrench, Drilled, Custom 450, Black Oxide, Chevy, Small Block, Set of 12
Part Number: ARP-100-1103
Estimated Ship Date: Today
Estimated Ship Date: Today
Header Studs, 12-Point Nuts, Steel, Black Oxide, Buick, 350-455, Set of 14
Part Number: ARP-120-1401
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Header Fasteners, Bolts, Locking, Double Hex Head, Steel, Nickel Plated, Dodge, 3.9L, V6, Set of 8
Part Number: STG-6916
Estimated Ship Date: Today
Estimated Ship Date: Today
Header Flanges, No Stubs, Steel, 0.250 in. Thick Flange, 1.625 in. Port, Each
Part Number: SCH-0177
Estimated Ship Date: Tomorrow if ordered today
Estimated Ship Date: Tomorrow if ordered today
Header Fasteners, Bolts, Allen Head, Black Oxide, Steel, 8mm x 1.25 Thread, 25mm Length, Set of 16
Part Number: MRG-978G
Estimated Ship Date: Today
Estimated Ship Date: Today
Header Bolts, 12-Point, 5/16 in. Wrench, Custom 450, Black Oxide, 3/8 in.-16, 0.750 in. U.H.L., Set of 12
Part Number: ARP-100-1207
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Header Fasteners, Bolts, Hex Head, Steel, Black Oxide, Chevy, Chrysler, Pontiac, Set of 12
Part Number: MRG-3409
Estimated Ship Date: Today
Estimated Ship Date: Today
Header Bolts, 12-Point, 3/8 in. Wrench, Custom 450, Black Oxide, Chevy, Small Block, Drilled, Set of 12
Part Number: ARP-100-1203
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Header Flanges, No Stubs, Steel, 0.250 in. Thick, 1.750 in. Port, Each
Part Number: SCH-0321
Not Yet Reviewed
Estimated Ship Date: Tomorrow if ordered today
Estimated Ship Date: Tomorrow if ordered today
Header Flanges, Steel, 0.250 in. Thick, 1.625 in. Port, No Stubs, Each
Part Number: SCH-01032
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
HEADER BOLT KIT, GM LS, 4.8, 5.3, 5.7, 30mm UHL, 3/8" Wrenching, Set of 12ea
Part Number: PQX-1011902
Not Yet Reviewed
Estimated Ship Date: Apr 1, 2026 if ordered today
Estimated Ship Date: Apr 1, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Header Collector, Formed, 2 Into 1, Weld-on, 1 5/8 in. Primary, 2.0 in. Collector Diameter, 6.5 in. Length
Part Number: PTE-H7659
Estimated Ship Date: Feb 19, 2026 if ordered today
Estimated Ship Date: Feb 19, 2026 if ordered today
Header Collector, 4 Into 1, Weld-on, 1.75 in. Primaries, 3 in. Collector, Steel, Natural, Each
Part Number: SCH-WO73040-71-2
Not Yet Reviewed
Estimated Ship Date: Tomorrow if ordered today
Estimated Ship Date: Tomorrow if ordered today
Header Studs, Hex Nuts, Custom 450, Black Oxide, Buick 3.8L, Set of 12
Part Number: ARP-120-1412
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Header Collector, 3 Into 1, Weld-on, 1.625 in. Primaries, 3 in. Collector, Steel, Natural, Each
Part Number: SCH-WO63030
Not Yet Reviewed
Estimated Ship Date: Tomorrow if ordered today
Estimated Ship Date: Tomorrow if ordered today
Header Bolts, 12-Point, Stainless Steel, Polished, 3/8 in.-16, Oldsmobile, 330-455, Set of 14
Part Number: ARP-480-1201
Not Yet Reviewed
Estimated Ship Date: Feb 2, 2026 if ordered today
Estimated Ship Date: Feb 2, 2026 if ordered today
Header Collector, 4 Into 1, Weld-on, 2.375 in. Primaries, 4.5 in. Collector, Steel, Natural, Each
Part Number: SCH-WO34540
Not Yet Reviewed
Estimated Ship Date: Tomorrow if ordered today
Estimated Ship Date: Tomorrow if ordered today
Exhaust Manifold Flange, Mild Steel, 0.500 in. Thickness, Honda K24, Each
Part Number: VPE-14724
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Header Collector, Weld-On, 2 into 1, Stainless Steel, Natural, Each
Part Number: STW-FC2200-300
Estimated Ship Date: Mar 11, 2026 if ordered today
Estimated Ship Date: Mar 11, 2026 if ordered today
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: Today
Estimated Ship Date: Today
Header Flanges, No Stubs, Steel, 0.250 in. Thick, 1.625 in. Port, Each
Part Number: SCH-0306
Not Yet Reviewed
Estimated Ship Date: Tomorrow if ordered today
Estimated Ship Date: Tomorrow if ordered today
Header Collector, Formed, 2 Into 1, Weld-on, 1 3/4 in. Primary, 2.25 in. Collector Diameter, 6.5 in. Length
Part Number: PTE-H7663
Not Yet Reviewed
Estimated Ship Date: Feb 19, 2026 if ordered today
Estimated Ship Date: Feb 19, 2026 if ordered today
Exhaust Block-Off Plates, Chevy, Small Block, Pair
Part Number: CTR-84-100
Estimated Ship Date: Tomorrow if ordered today
Estimated Ship Date: Tomorrow if ordered today
Header Collector, 4 Into 1, Weld-on, 2 in. Primaries, 4 in. Collector, Steel, Natural, Each
Part Number: SCH-WO04040
Not Yet Reviewed
Estimated Ship Date: Tomorrow if ordered today
Estimated Ship Date: Tomorrow if ordered today
Header Bolts, 12-Point, 3/8 in. Wrench, Drilled, Stainless, Polished, 3/8 in.-16, 0.750 in. U.H.L., Set of 12
Part Number: ARP-400-1203
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
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