Holley EFI - Adapter Kit for Fuel Rail Kit Holley P/N's 534-209 and 534-210 or pumper helmets because they

or pumper helmets because they have a provision on the helmet to attach a fresh air hose

Made from space age elastomer

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Holley EFI - Adapter Kit for Fuel Rail Kit Holley P/N's 534-209 and 534-210 or pumper helmets because theyRequired when directly connecting Holley fuel rails to GM factory fuel line quick connect. Includes (1) 3 4 16 O ring port plug and (1) 6 to GM quick connect adapter.