Proform Parts Header Fasteners

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 11/3/2025

Header Bolts, Wedge Locking, Hex Head, Steel, Black Oxide, 3/8-16 in. Thread, 1 in. UHL, Chevy, Set of 12

Part Number: PRO-66753

4.57 out of 5 stars ( 23 )

Estimated Ship Date: Monday 11/3/2025

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 11/3/2025

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 11/3/2025

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

4.73 out of 5 stars ( 11 )

Estimated Ship Date: Monday 11/3/2025

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 11/3/2025

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 11/3/2025

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 11/3/2025

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

4.43 out of 5 stars ( 7 )

Estimated Ship Date: Monday 11/3/2025

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 11/3/2025

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: Monday 11/3/2025