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NOS Flare to Flare Union Fitting

Flare to Flare Union Fitting, 4AN - 4AN, Blue

PART# 17910NOS

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Flare to Flare Union Fitting, 4AN - 4AN, Blue


  • Flare to Flare Union Fitting


A Side4AN
Adapter AN Size ( A )4 AN MALE
Adapter AN Size ( B )4 AN MALE
Adapter TypeAN Male Union
B Side4AN
Emission Code4
FinishAnodized Blue
Material6061 Aluminum
Product TypeAN Union
Part Number17910NOS



This part is legal for sale or use on Racing Use Only Vehicles

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

Tech Resources

Not all nitrous companies use 37° "AN" Fittings in their nitrous kits. To avoid potential leaks, never mix 37° "AN" and 45° SAE fittings.
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