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HIGH-SPEED ORDER DISPATCH
Fast same-day shipping on orders before 3 PM EST // FREE shipping on orders over $75
6061 Billet Aluminum
Precision CNC machined
SAME-DAY DISPATCH
Orders before 3 PM EST ship same day
TRACK TESTED & PROVEN
Rated for high PSI, high temps, and track performance
RACER TECH SUPPORT
Call (866) RACE-561 for service
TECHNICAL GUIDE
AN Thread & Hose Sizing Reference
AN (Army-Navy) thread sizes are the motorsport standard for high-pressure fuel, oil, and coolant plumbing. Use this quick reference to select matching fittings, hose sizes, and adapters for your build.
| AN Size | Hose ID / Tube O.D. | Thread Size (SAE) | Typical Track Applications |
|---|---|---|---|
| -4AN | 1/4 inch | 7/16-20 |
Fuel return, turbo oil feed, nitrous |
| -6AN | 3/8 inch | 9/16-18 |
Primary fuel EFI feed/return, trans coolers, power steering |
| -8AN | 1/2 inch | 3/4-16 |
High HP fuel, oil coolers, power steering |
| -10AN | 5/8 inch | 7/8-14 |
Remote oil filter, turbo drains, breather lines, very high HP fuel systems |
| -12AN | 3/4 inch | 1-1/16-12 |
Large dry sump oil lines, supercharger coolant systems, extreme HP fuel systems |
| -16AN | 1 inch | 1-5/16-12 |
Radiator coolant hoses, high volume dry sump, extreme alcohol-fueled engines |
| -20AN | 1-1/4 inch | 1-5/8-12 |
Large radiator coolant lines, high-capacity dry sump scavenge |
Need custom plumbing advice for your turbo, dry sump, or fuel cell? Call our track support team at (866) RACE-561.
WCAG 2.1 AA
