Holley Metering Block Gasket - For Model 4500 w/ Intermediate System 356603 has 13/16"-16 threads for spin-on

has 13/16"-16 threads for spin-on style oil filters and includes mounting hardware

Fast 1 BarFAST is the leading developer of electronic fuel injection systems

The dual spring design creates a stronger valve spring that can easily handle the increased lift found in extreme stress applications

Used by top race teams in rear ends

Designed to push a car's suspension to its performance peak

Holley Metering Block Gasket - For Model 4500 w/ Intermediate System 356603 has 13/16"-16 threads for spin-onHolley Metering Block Gasket 108 36 2 For Model 4500 w Intermediate System 2 Per Package 2 Per Package 100 Bulk Available Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every NASCAR Cup team and nearly every NHRA Pro Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS