APR Big Block Chevy 12pt Header Bolt Kit

ARP Big Block Chevy 12-Point Header Bolt Kit

Upgrade the exhaust header hardware on your Big Block Chevrolet engine with the ARP 12-Point Header Bolt Kit. Designed for securing exhaust headers to the cylinder heads, this kit provides high-strength ARP fasteners for performance, racing, restoration and street engine applications.

ARP part number 100-1212 is manufactured from 8740 chrome moly and includes 16 header bolts. Each fastener features a 3/8″ thread size, 1.000″ under-head length, and a 12-point head design. ARP categorizes this kit under Cylinder Head Header and lists it for generic Big Block Chevrolet applications.

Product Features:

• ARP Header Bolt Kit
• Designed for Big Block Chevrolet Engines
• 12-Point Fastener Head Design
• 8740 Chrome Moly Construction
• 3/8″ Thread Size
• 1.000″ Under-Head Length
• Includes 16 Header Bolts
• Designed for the Cylinder Head Header Location
• High-Quality ARP Fastener Construction
• Ideal for Performance, Racing and Street Engine Builds

Specifications:

ARP Engine Applications:

• Chevrolet – Generic – Big Block
• Chevrolet – Big Block – Generic

Fitment Notes:

• Designed for Big Block Chevrolet header applications.
• Designed for securing exhaust headers to the cylinder heads.
• ARP lists this kit for generic Chevrolet Big Block applications rather than specific engine displacements.
• Features 12-point fastener heads.
• Includes 16 bolts with a 1.000″ under-head length.
• Uses a 3/8″ thread size.
• Verify cylinder head thread size and header flange thickness before installation.