The right male-to-male brake line adapter depends on the thread and flare types at both connection points. For connecting an AN3 hose to a 3/8-24 inverted-flare brake component, the Podavelle adapter is the closest match. For joining two AN3 connections, choose a straight AN3 coupler such as the Podavelle or EVIL ENERGY fitting. The options below also include a metric-thread adapter and an inverted-flare alternative for different setups.
| Product | Best For | Connection Type |
|---|---|---|
| Podavelle Inverted-Flare Adapter, Two-Pack | AN3 hose to inverted-flare component | 3/8-24 UNF AN3 to 3/8-24 inverted flare |
| Podavelle AN3 Coupler, Two-Pack | Joining AN3 connections | AN3 male to AN3 male |
| EVIL ENERGY AN3 Coupler | Straight AN3-to-AN3 connection | AN3 male to AN3 male |
| Podavelle Metric Adapter | Connecting an AN3 hose to M10x1.0 | AN3 male to M10x1.0 |
| Allstar Performance Adapter | AN3 connection to inverted-flare line | 3 AN male to 3/8-24 inverted-flare female |
Podavelle AN3 To Inverted-Flare Adapter
This two-piece set connects an AN3 (3/8-24 UNF) male fitting to a 3/8-24 male inverted-flare connection. Podavelle identifies it for adapting master cylinders, wheel cylinders, calipers, and other brake or clutch components to 3AN flex hoses. Its stated material is 304 stainless steel.
Best for: A buyer adapting an AN3 flex hose to a compatible inverted-flare brake component. The two-piece pack may suit a job that needs more than one adapter. Check the seat and thread type carefully before ordering: matching thread diameter alone does not confirm a compatible flare. Avoid this fitting if the component requires a different thread or seat design.
Podavelle Two-Pack AN3 Male Couplers
These straight couplers have AN3 (3/8-24 UNF) male threads at both ends and are made from 304 stainless steel. The listed applications include brake and clutch lines, as well as fuel, turbo oil feed, coolant, oil pressure, gauge, and power-steering systems.
Best for: Joining compatible AN3 connections when a two-piece set is useful. This is a better match than an inverted-flare adapter when both sides use AN3 fittings. The product information does not specify a separate inverted-flare end, so avoid choosing it to mate directly with an inverted-flare port.
EVIL ENERGY Straight AN3 Coupler
The EVIL ENERGY fitting is a straight AN3 male-to-male coupler with 3/8-24 UNF threads. Its listed sealing method is a 37-degree AN flare. The stated working-temperature range is -50°C to 800°C (-58°F to 1472°F).
Best for: A buyer who needs a direct AN3-to-AN3 connection and wants the specified 37-degree flare sealing detail. Confirm that both mating fittings use the matching AN flare; this is not described as an inverted-flare adapter. Temperature information does not replace checking the requirements of the specific brake system or fluid application.
Podavelle AN3 To M10x1.0 Adapter
This adapter connects an AN3 (3/8-24 UNF) male end to an M10x1.0 metric end. It is made from 304 stainless steel. The listed applications include brake and clutch lines, fuel systems, turbo oil feed hoses, coolant, oil pressure, gauge lines, and power steering.
Best for: A setup that specifically calls for an AN3-to-M10x1.0 transition. It is more suitable than an AN3-to-AN3 coupler when the receiving connection is metric. Verify the thread pitch and sealing surface on the vehicle or component; do not assume that another M10 fitting has the same specification.
Allstar Performance Inverted-Flare Adapter
Allstar Performance lists this fitting as a 3 AN male to 3/8-24 inverted-flare female adapter. It is a clip-in style part with a zinc-oxide finish. Unlike a male-to-male union, its inverted-flare side is specified as female.
Best for: Buyers whose brake-line layout requires an AN3 male connection and a compatible 3/8-24 inverted-flare female connection. It may be a better fit than the Podavelle male inverted-flare adapter when the receiving flare connection must be female. Avoid it if the system requires two male ends or a different mounting style.
Buying Guide: How To Choose A Brake Line Adapter
Which thread and flare types do you need?
Identify both ends of the connection before selecting an adapter. AN3 and 3/8-24 describe thread dimensions in these listings, but the sealing shape also matters. AN flare and inverted flare are different connection styles. A fitting can have a matching thread size and still be unsuitable if its seat or flare does not match the mating part.
Do you need a straight coupler or a conversion adapter?
Choose an AN3 male-to-male coupler when both connections are compatible AN3 fittings. Choose an adapter with an inverted-flare or M10x1.0 end when the other component uses that specified connection. Check whether each end is male or female; the Allstar option, for example, is listed with a female inverted-flare end.
What material and pack size matter?
The listed Podavelle adapters are made from 304 stainless steel. EVIL ENERGY specifies a 37-degree AN flare and a working-temperature range. The two-pack Podavelle options provide two fittings, while the other listed couplers are presented as single fittings. Match material, quantity, and connection details to the job rather than choosing by appearance alone.
Frequently Asked Questions
What does AN3 mean on a brake adapter?
In these listings, AN3 is associated with a 3/8-24 UNF thread and a 3AN fitting. Confirm the flare style as well as the thread before selecting a part.
Can an AN3 fitting connect directly to an inverted-flare fitting?
Only with an adapter designed for the specific AN3 and inverted-flare connection types. The Podavelle inverted-flare product is listed for that kind of transition, but the mating seat and end configuration must match.
Is AN3 the same as M10x1.0?
No. The listings identify AN3 as 3/8-24 UNF and specify M10x1.0 as a separate metric connection. Use an adapter only when its two ends match the parts being joined.
Can these fittings be used for every brake system?
No universal fit is established by the product details. Check the vehicle or component specifications, thread, flare, seat, and end gender, and have brake-system work inspected when appropriate.