AN Male Tee Fittings

Q: What's the difference between an AN male tee and an AN male-to-female tee fitting?

An AN male tee fitting has male threads on all three ports — often three male AN flare ends, or male AN flare on the run with a male NPT branch — so every port still needs a female hose end or adapter to connect. An AN male-to-female tee keeps the run male AN flare but makes the branch female, letting you thread straight onto a fuel rail, pressure regulator, or gauge stud without an extra adapter. Splitting a hose into two more hose lines → stay with an all-male tee. Tapping a component that already has a male stud → use a male-to-female tee.

Most fuel and oil lines carry one path in, one path out — until you need to feed a second carburetor, tap a return line, or add a sensor without cutting into your existing hose. An AN male tee fitting solves this by splitting one line into two without adding a separate fuel line splitter block or reworking your whole routing. This collection covers tees where every threaded port is male — either three male AN flare ends, or male AN flare on the run with a male NPT branch — so you always know which end needs a female hose end and which doesn't.

All Ports Are Male: How This Differs From a Male-to-Female Tee

Because every port on these AN hose fittings is male, each one still needs a female-threaded hose end, adapter, or component to connect to it. That's the trade-off for a fully symmetrical, reusable tee that works the same no matter which port becomes the branch.

Configuration	Run Ports	Branch Port	Best For
All-male AN tee (3-port)	Male AN flare	Male AN flare	Splitting one hose into two female-ended lines — dual carburetor feeds, return-line merges, twin-turbo oil supply
AN male + NPT branch	Male AN flare	Male NPT thread	Adding a pressure sensor, primer tap, or accessory bung off a female NPT port without touching the main hose

If your goal is the opposite — threading a tee directly onto a fuel rail, pressure regulator, or gauge stud without buying a separate adapter — the port you need is female, not male. Check our AN Male to Female Tee Fittings instead.

Where an All-Male Tee Actually Gets Used

Feeding two carburetors or injectors from a single fuel pump outlet
Merging return lines from a fuel pressure regulator before they head back to the tank
Splitting oil supply or return between twin turbos
Adding a branch for a catch can vent line without cutting the main hose
Brake, clutch, and power-steering line splits where a mounting tab keeps the tee anchored to the chassis

Flow, Sealing & Fit Notes Before You Buy

Every branch you add pulls flow away from the others — don't run one tee to feed two high-demand components, like twin high-pressure pumps, off the same line. Working pressure on most of these fittings tops out around 1500 PSI, so match the tee's rating to your system before it goes in.

On any tee built with AN to NPT threads, only the NPT side needs sealant — a couple of wraps of PTFE tape or pipe dope on the tapered threads. The 37° AN flare ports seal metal-to-metal and don't need tape; adding it there just makes future disassembly harder. For full torque and installation steps, see our AN fitting installation guide.

+ Read more

Sidebar

Featured Products

FAQs about AN Male Tee Fittings

What's the difference between an AN male tee and an AN male-to-female tee fitting?

An AN male tee fitting has male threads on all three ports — often three male AN flare ends, or male AN flare on the run with a male NPT branch — so every port still needs a female hose end or adapter to connect.

An AN male-to-female tee keeps the run male AN flare but makes the branch female, letting you thread straight onto a fuel rail, pressure regulator, or gauge stud without an extra adapter.

Splitting a hose into two more hose lines → stay with an all-male tee. Tapping a component that already has a male stud → use a male-to-female tee.

Can I use one AN tee to feed two high-demand components, like dual fuel pumps?

Not recommended.

Every branch on a tee splits the available flow, so running two high-pressure pumps or injectors off the same size tee usually starves both sides under load. Size the run for total system flow, and if two components each need full flow, run them off separate lines instead of a single splitter.

Do I need PTFE tape or thread sealant on an AN male tee fitting?

Only on the NPT side, if your tee has one. The 37° AN flare ports seal metal-to-metal under compression and don't need tape or sealant — adding it there can actually cause leaks by keeping the flare faces from seating fully. On any male NPT thread, two to three wraps of PTFE tape or a thin coat of pipe dope on the tapered threads is enough.

Why is my AN tee fitting leaking, and how do I fix it?

Most leaks trace back to a damaged or scratched flare face, a cross-threaded connection, or a fitting that was only hand-tightened. AN flare seals rely on a clean, undamaged 37° surface pressed together with the right torque — hand-tight alone usually isn't enough on aluminum or steel fittings, so use a wrench and snug it down properly. Inspect both flare faces for nicks before reassembly, and replace a fitting rather than trying to re-seal a gouged flare.

What size AN tee fitting do I need for my fuel or oil line?

Match the tee's AN size to the hose already on your car — a -6AN tee for -6AN fuel line, -8AN for -8AN oil line, and so on.

If you're branching to a smaller-flow accessory like a pressure sensor, the branch port can step down in size, but the run should stay matched to your main hose to avoid a flow bottleneck. When in doubt, check your existing fitting's dash size before ordering.

.

AN Male Tee Fittings

All Ports Are Male: How This Differs From a Male-to-Female Tee

Where an All-Male Tee Actually Gets Used

Flow, Sealing & Fit Notes Before You Buy

Categories

Refined By Clear all

Featured Products

FAQs about AN Male Tee Fittings

RECENTLY VIEWED PRODUCTS

AN Male Tee Fittings

All Ports Are Male: How This Differs From a Male-to-Female Tee

Where an All-Male Tee Actually Gets Used

Flow, Sealing & Fit Notes Before You Buy

Categories

Refined By Clear all

Featured Products

Sort by:

FAQs about AN Male Tee Fittings

RECENTLY VIEWED PRODUCTS

Get an Exclusive 8% Off Your First Purchase

Shop the look

Choose Options

Edit Option

Choose Options