AN To Fittings

• Connects AN8 or AN10 male threads with side-mounted AN female swivel port.
• Machined from 6061-T6 aluminum with black anodized finish for corrosion resistance.
• Supports high-pressure fuel and oil systems up to 1500 PSI.
• 37° AN flare sealing ensures leak-free performance under high-temp conditions.
• Ideal for carburetors, EFI conversions, LS swaps, and performance fuel line routing.

The problem it solves: You want a fuel pressure gauge on a finished build, but there's no spare port. The usual fix is cutting a line and splicing in a tee — three new fittings, two new leak paths.

What it does instead: Threads into an ORB port you already have (fuel rail, fuel pressure regulator, filter head, fuel cell bung). Your AN hose reconnects exactly as before. The 1/8" NPT gauge port appears in between. Nothing cut, nothing re-routed.

Why the location matters: A test port at the rail reads what your injectors actually see. Read at the pump instead and you're measuring a number that hides the exact problem you're hunting.

What that gets you: The difference between "it goes lean under boost" and knowing whether it's the pump, the filter or the regulator.

• Connects AN male to female ports at a 45° or 90° angle with full swivel capability
• Built from corrosion-resistant 304 stainless steel for durability in harsh environments
• 37° flare design ensures leak-free performance up to 1,500 PSI under high vibration
• Operating range from -40°F to 250°F – safe for fuel, oil, brake fluid, and more
• Ideal for brake lines, clutch systems, fuel routing, power steering, and compact engine bays

Converts GM TBI/Vortec fuel system ports to 6AN. This adapter set features M16x1.5 feed and M14x1.5 return threads, 6061-T6 aluminum construction, and a 1500 PSI rating for reliable fuel line upgrades on 87-98 GM trucks.

• Size: AN6 (9/16"-18 UNF) Male Flare to 1/4"-18 NPSM. Package Included: 2PCS.
• Material: Built with sturdy 6061-T6 aluminum alloy, the 6AN transmission cooler fitting is anodized to be oil, rust, and corrosion-resistant
• Features: The CNC-machined adapter features a hexagonal design, making it easy to install. Its male AN side is well-sealed by a 37-degree angle
• Compatibility: It can be well-compatible with fuel, oil, water, and other media
• Application: The transmission fitting is designed for front and rear transmission line ports prior to 2007. Fits TH350, TH400 , 4L60E, 700R4

Verify Fitment Before Ordering:

This adapter is designed for 1/4-18 NPSM transmission cooler ports and is not compatible with inverted flare or different thread designs. Confirm your transmission port style to prevent incorrect installation.

Manually isolate an AN fuel or fluid line for service, storage, or system changes. This inline fuel shutoff valve is offered in 6AN, 8AN, and 10AN male-to-male versions with 37° flare connections, a cable-ready lever, and a black-anodized 6061-T6 aluminum body. Match the selected valve size to both female AN hose ends. Hose ends, adapters, and an actuation cable are not included.

• Connects two AN female fittings with a straight or 90° configuration
• Made from 304 stainless steel for superior strength and corrosion resistance
• Designed with a 37° flare seal for a leak-free connection at up to 1,500 PSI
• Works across temperatures from -40°F to 250°F for road, race, or off-road use
• Ideal for brake lines, clutch lines, fuel delivery, power steering, and oil systems

• Precise Sealing Angles: Designed with standard AN 37° flare, this fitting ensures tight and consistent sealing. Proper sealing angles help prevent leaks and maintain stable system performance under pressure.
• High-Strength Aluminum: Machined from high-strength 6061-T6 aluminum alloy, this 10AN to 10AN fitting supports working pressures up to 1500 PSI and operates reliably from -65°F to 252°F (-53°C to 122°C). It offers excellent corrosion resistance with a durable black anodized finish.
• Easy Installation: Installing this fitting is quick and straightforward. It's recommended to use EVIL ENERGY, an adjustable wrench.
• Wide Applications: This male-to-male flare coupler is widely used in fuel systems, such as extending fuel hoses, connecting lines to fuel pumps, and cooler systems.

Your car is metric. Everything you want to bolt to it is not.

Hydraulic handbrake cylinders, adjustable proportioning valves, braided AN lines — the performance brake market in the US runs on AN threads, while your factory ports are M10x1.0 or M10x1.25. This adapter is the joint between the two.

37-degree AN cone on one end, metric inverted flare seat on the other. Stainless steel. Confirm your flare type before ordering, because M10 threads come in more than one seat.

Why it is needed: Aftermarket performance brake hardware in the US uses AN threads, while Japanese and European vehicles use metric brake ports. The two cannot be joined directly.

Critical check before ordering: M10 threads exist with bubble flare, SAE-style 45-degree double flare, and JIS 37-degree double flare seats. The thread matching does not confirm the flare matches.

Sealing: Metal to metal on both ends. No thread sealant or PTFE tape on either side.

Quantity: Available in 1 and 2 piece packs.