ARP Header Bolt Kit 3/8x1.000" Hex

ARP Header Bolt Kit 3/8x1.000" Hex is a genuine ARP high performance fastener supplied for professional engine and drivetrain builds.

This part is listed under ARP code 100-1109 and is supplied here individually by Billy’s Speed Shop for the UK and European market. It is intended for customers who require consistent clamp load, repeatable torque values and improved reliability compared with generic hardware.

Typical use for this component falls within the Header Bolt Kit family, covering performance engines that see regular high load, elevated RPM or competition use. It is suitable for serious street builds, track cars and drag racing projects where hardware is expected to cope with repeated strip and assembly cycles.

• Thread size 3/8 with an under-head length of approximately 1.000 inches.
• Conventional hex head fastener for straightforward installation with standard tooling.

As an authorised ARP reseller, Billy’s Speed Shop sources parts through recognised distribution, so you receive authentic hardware with correct markings, packaging and specification. If you are planning a complete engine or transmission package and want a matched fastener set, contact us with your build details and we can help specify the correct combination of ARP components for your application.