Features:

• Fuel Economy From The Engine
• 5/16" flanges for a perfect seal
• Consturcted of .050" cold roll tubing
• Mandrel bent tubing for low backpressure
• Bolt up collector flanges for ease of installation
• Turned length for a broad power curve
• Include All Mounting Hardware
• Leakproof O-Ringed Port Seals
• Mandrel-Formed Power Plenum
• Leak Tested For Max Performance
• Certain applications include O2 extension harnesses

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