Header Fasteners

Header Bolt, Hex Head, Steel, Black Oxide, 3/8 in.-16, 1.000 in. U.H.L., Set of 16

Part Number: MIL-84543

4.85 out of 5 stars ( 27 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Bolts, Wedge Locking, Hex Head, Steel, Black Oxide, 3/8-16 in. Thread, 1.000 in. UHL, Set of 16

Part Number: PRO-66756

4.55 out of 5 stars ( 11 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Fasteners, Self-Locking Wedge Header Bolts, Hex Head, Steel, Nickel Plated, 3/8 in.-16 Thread Size, 1.000 in. Underhead Length, Set of 16

Part Number: PRO-66825

Not Yet Reviewed

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Fasteners, Bolts, Allen Head, Steel, Black Oxide, 3/8 in.-16, .750 in. UHL, Set of 12

Part Number: MRG-3420G

3.27 out of 5 stars ( 11 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Bolts, 3/8 in.-16, 12-Point, Steel, Black Oxide, Chevy, Ford, Set of 16

Part Number: BBK-1577

4.25 out of 5 stars ( 8 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Bolts, Hex, 8mm x 1.25 Thread, Steel, Zinc Plated, 30mm Underhead Length, Ford, 4.6L, 5.4L, Set of 16

Part Number: BBK-1624

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Bolts, Wedge Locking, Hex Head, Steel, Black Oxide, 3/8-16 in. Thread, 0.750 in. UHL, Chevy, Set of 16

Part Number: PRO-66752

4.75 out of 5 stars ( 12 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Bolts, Hex Head, Steel, Nickel Plated, 8mm x 1.25, Chevy, 5.7, 6.0L, LS1, LS6, Set of 12

Part Number: PRO-66754

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Bolts, Hex Head, Steel, Black Oxide, 5/16 in.-18, 0.750 in. U.H.L., Chrysler, Small Block, Set of 14

Part Number: MRG-976

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Fasteners, Bolts, Hex Head, Steel, Black Oxide, Chevy, GM, Set of 16

Part Number: MOR-38713

Not Yet Reviewed

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Fasteners, Self-Locking Wedge Header Bolts, Hex Head, Steel, Nickel Plated, 3/8 in.-16 Thread Size, 1.000 in. Underhead Length, Set of 12

Part Number: PRO-66824

Not Yet Reviewed

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Fasteners, Bolts, Allen Head, Steel, Black Oxide, Chevy, Chrysler, Pontiac, Set of 12

Part Number: MRG-916

4.4 out of 5 stars ( 5 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Fasteners, Self-Locking Wedge Header Bolts, Hex Head, Steel, Nickel Plated, 3/8 in.-16 Thread Size, 0.750 in. Underhead Length, Set of 16

Part Number: PRO-66823

Not Yet Reviewed

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Bolts, Hex Head, Steel, Nickel Plated, 8mm x 1.25, Chevy, 5.7, 6.0L, LS1, LS6, Set of 12

Part Number: PRO-66755

4.6 out of 5 stars ( 5 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Bolts, Wedge Locking, Hex Head, Steel, Black Oxide, 3/8-16 in. Thread, 0.750 in. UHL, Chevy, Set of 12

Part Number: PRO-66751

4.5 out of 5 stars ( 8 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Fasteners, Header Bolt Kits, Flanged, 3/8 in. - 16 Thread Size, Steel, Black Oxide, 0.750 in. Underhead Length, Set of 12

Part Number: EDL-8540

2.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Fasteners, Bolts, Allen Head, Black Oxide, Steel, 8mm x 1.25 Thread, 25mm Length, Set of 16

Part Number: MRG-978G

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Bolts, Split Lock, 8mm x 1.25, 12-Point, Steel, Black Oxide, Ford Modular, Chevy 8.1L, Set of 16

Part Number: SUM-910124

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Fasteners, Bolts, Hex Head, Steel, Black Oxide, Chevy, Chrysler, Pontiac, Set of 12

Part Number: MRG-3409

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Bolts 3/8 - 16 3/4", Grade 5 Black Oxide Finish With Hex and Socket Head

Part Number: CGT-CF1009

Not Yet Reviewed

Estimated Ship Date: Feb 3, 2027 if ordered today

• Drop Ship
• Special Order

Header Fasteners, Self-Locking Wedge Header Bolts, Hex Head, Steel, Nickel Plated, 3/8 in. NPT Thread Size, 0.750 in. Underhead Length, Set of 12

Part Number: PRO-66827

Not Yet Reviewed

Estimated Ship Date: Nov 30, 2026 if ordered today

• Drop Ship
• Special Order

Header Fasteners, Self-Locking Wedge Header Bolts, Hex Head, Steel, Nickel Plated, M8 x 1.0 Thread Size, 1.181 in. Underhead Length, Set of 16

Part Number: PRO-66826

Not Yet Reviewed

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Fasteners, Header Bolt Kits, Flanged, 3/8 in. - 16 Thread Size, Steel, Black Oxide, 1.000 in. Underhead Length, Set of 12

Part Number: EDL-8545

Not Yet Reviewed

Estimated Ship Date: Monday 11/9/2026 if shipped by air

Header Fasteners, Bolts, Locking, Double Hex Head, Steel, Nickel Plated, Dodge, 3.9L, V6, Set of 8

Part Number: STG-6916

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/9/2026 if shipped by air