Availability
Header Fasteners
Header Bolts, Flanged Hex Head, 3/8-16 in., 0.750 in. Underhead Length, Set of 12
Part Number: SCH-3006-12
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Header Fasteners, Bolts, Allen Head, Steel, Black Oxide, Chevy, Chrysler, Pontiac, Set of 12
Part Number: MRG-916
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 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
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Header Bolts, Hex, 3/8-16 in. Thread, Steel, Zinc Plated, 1.00 in. Underhead Length, Set of 12
Part Number: PTE-H7973
Not Yet Reviewed
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
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: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Header Bolts, 12-Point, 5/16 in. Wrench, Stainless Steel, Polished, 3/8 in.-16, 0.750 in. U.H.L., Set of 12
Part Number: ARP-400-1207
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Header Bolts, Hex Head, Custom 450, Black Oxide, Oldsmobile, Big, Small Block, V8, Set of 14
Part Number: ARP-180-1101
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Header Bolt, Hex Head, Steel, Black Oxide, 3/8 in.-16, 0.750 in. U.H.L., Set of 12
Part Number: MIL-84540
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Header Bolts, Locking, Steel, 3/8-16 in. Thread, 1.25 in. Underhead Length, Dodge, Big Block, Set of 12
Part Number: STG-8916B
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
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 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Header Fasteners, Bolts, Locking, Double Hex Head, Steel, Nickel Plated, AMC, V8, Set of 12
Part Number: STG-8918S
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Header Studs, 12-Point Nuts, Custom 450, Black Oxide, Buick 3.8L, Set of 12
Part Number: ARP-120-1402
Not Yet Reviewed
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Header Bolts, Hex Head, 3/8 in. Wrench, Drilled, Stainless Steel, Polished, Chevy, Small Block, Set of 12
Part Number: ARP-400-1103
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Header Fasteners, Bolts, Hex Head, Steel, Black Oxide, Chevy, Chrysler, Pontiac, Set of 12
Part Number: MRG-3409
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Header Fasteners, Bolts, Locking, Internal Allen/Hex, Steel, Nickel Plated, 3/8-16 in., 0.750 in. UHL, Pair
Part Number: STG-8910
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Header Fasteners, Bolts, Locking, 12-point, Seal, Nickel Plated, AMC, Buick, Chrysler, Pontiac, Set of 12
Part Number: STG-8936
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered 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: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
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: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Header Fasteners, Bolts, Locking, Double Hex Head, Steel, Nickel Plated, 3/8-16 in., 1.250 in. UHL, Pair
Part Number: STG-8910B
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 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: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Header Bolts, Flanged Hex Head, 8mm x 1.25, 22mm Underhead Length, Chevy LS, Set of 12
Part Number: SCH-3004-12
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Header Studs, Locking, 12-Point Nuts, Steel, Natural, 3/8-16 in., Set of 16
Part Number: KRC-6602
Not Yet Reviewed
Estimated Ship Date: Apr 16, 2026 if ordered today
Estimated Ship Date: Apr 16, 2026 if ordered today
Header Bolts, Locking, External 12-point, Stainless Steel, Natural, Chrysler, Small Block V8, Set of 12
Part Number: STG-8955
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 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: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
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: Monday 4/6/2026 if shipped by air
Estimated Ship Date: Monday 4/6/2026 if shipped by air
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster