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NOS Siphon Tube for 15 lb and 20 lb Bottle with Super Hi-Flo Valve

NOS Siphon Tube for 15 lb and 20 lb Bottle with Super Hi-Flo Valve

PART# 16285NOS

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NOS is making available replacement siphon tubes for its most popular nitrous bottles. We offer the siphon tubes for 5 lb all the way up to 20 lb bottles. These 3/8" I.D. tubes are made from 6061 aluminum and can be used on any NOS Hi-Flo or Super Hi-Flo bottle valve. This screw-on siphon tube can be used as an upgrade for an older style compression fitting tube.


  • Made From 6061 Aluminum
  • Tube is 3/8” I.D. for Maximum Flow
  • Can be used on NOS 15 & 20lb. Bottles with Super Hi-Flo Valve
  • Designed to Replace Old Style Compression Fitting Siphon Tube
  • Service Part for NOS Bottle Valves


Bottle Size15 lb & 20 lb
Bottle ValveSuper Hi-Flo
Diameter3/8 inch
Emission Code4
Length22-7/8 inch
Product TypeSiphon Tube
Part Number16285NOS



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

NEEDED FOR INSTALLATION: 1. 1" Socket 2. In-lb torque wrench 3. Ft-lb torque wrench 4. Vice with aluminum jaws such as 1004ERL, found on the Holley website, or another method capable of holding the siphon tube without deformation. 5. Medium strength thread locker such as Loctite 242® or equivalent. 6. Tube/pipe/conduit bending tool with minimum 3" radius
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