Features:

• High flow, mandrel-bent tubes provide consistent tubing diameters for smooth flow and increased exhaust velocity
• Heavy duty tubing and high quality welds for increased strength and durability
• Smooth transition, 1-3/4” diameter primary tubes are used for increased exhaust flow increasing performance, improving throttle response and broadening the torque curve
• 3” slip-on collectors connect to a 3” high flow Y-pipe that connects at the factory exhaust location
• TIG-welded, machined 3/8” header flange for a leak-free seal and maximum strength
• Premium aluminum header gaskets and installation hardware included
• Available in a high heat resistant black paint or a satin silver metallic ceramic thermal barrier coating
• Connections for O2 sensors are located on collectors. Catalytic converter must be relocated
• Headers are a must if you are using a cold air intake, cat-back exhaust system or tuner

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

  $15.32

  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