Features:

• Tuned-length primary tubes for better performance
• Mandrel-bent tubing for smooth exhaust flow
• Light weight & sturdy 16 gauge tubing
• Mandrel-formed Power Plenum collector for low back pressure
• Sturdy, leak-tested O-Ring port seals
• Engineered for a precision fit
• Designed for easy, trouble-free installation
• Includes all mounting hardware and premium gaskets
• Certain applications contain O2 harness

About Flowtech

Flowtech provides high-quality performance exhaust systems at a great value. Explore our lineup of headers, mufflers, and exhaust systems at our official retailer, Holley.com!​

• Mr. Gasket Header Bolts - 3/8-16 x 3/4 Inch Hex Head - Set of 16

  Fits 1965-1990 Chevrolet 396-454 Big Block and 1962-2001 Ford 221-351W

  Part# 919G

  $20.10

  Qty: 

  Add To Cart

The following vehicles are considered Racing Use Only Vehicles:

• Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle