Holley Holley Adjustable Inlet Needle & Seat - Viton HO6-504 Fuel Cell Accessories TheseECV is for use with

TheseECV is for use with turbocharged vehicles and willopen the exhaust valve when boost reaches roughly 6-7 psi

constant power and ground connections required)

3/4" NPT Inlet

These handy NPT to 45 degree hose barb fittings are designed to allow easy fuel line installation on electric fuel pumps and regulators whenusing rubber fuel line

Holley Holley Adjustable Inlet Needle & Seat - Viton HO6-504 Fuel Cell Accessories TheseECV is for use withHolley Adjustable Inlet Needle & Seat VitonSize 0. 110" Brand: HOLLEY Part Number: HO6 504 Description: Most Holley performance carburettors come equipped with a Viton tipped needle. The Viton needle design is resistant to dirt and conforms nicely to the shape of the seat for superior sealing. For this reason it is not recommended to use a steel or titanium needle, except for racing.