What thread size does the gauge port use?

The side port is 1/8-inch FPT (female pipe thread), which is the standard thread size for most mechanical gauge senders and many electronic pressure sensors.

Can I use this for fuel pressure monitoring?

Yes. The adapter works in any -6AN plumbed system, including fuel lines. Install it inline and connect your fuel pressure gauge or sensor to the 1/8 FPT side port.

Does this come with any sealing hardware?

Thread sealant tape or paste is typically needed for the NPT and FPT connections, as pipe threads rely on sealant for a leak-free joint. AN connections seal via the flare, so no sealant is needed on that end.

Fragola Inline Gauge Adapter -6AN x 1/4 NPT

Name: Fragola Inline Gauge Adapter -6AN x 1/4 NPT
Brand: Fragola
SKU: fragola-fragola-inline-gauge-adapter-6an-x-1-4-npt-t14-434862
Price: 8.38 USD
Availability: BackOrder

$8.38

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Inline gauge adapter with -6AN male inlet, 1/4 NPT outlet, and 1/8 FPT side port for gauge or sensor connection.

Key Features

Inline design combines -6AN male and 1/4 NPT connections with a 1/8 FPT side gauge port.
Eliminates the need for a separate tee fitting when adding a pressure gauge or sensor.
Works in fuel, oil, coolant, or any -6AN plumbed pressure monitoring application.
Manufactured by Fragola in the USA.
Compact form factor fits in tight engine bay spaces.

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Product Details

Plumbing a pressure gauge or sensor into an AN fuel, oil, or coolant line typically means adding a tee fitting and extra connections — more potential leak points and more clutter in the engine bay. Fragola's 495009 inline gauge adapter simplifies the job by combining the line connection and gauge port into a single fitting.

One end accepts a -6AN male connection and the other side provides a 1/4-inch NPT thread, while a 1/8-inch FPT port on the side gives you a direct tap for a mechanical gauge line or electronic pressure sensor. That side port is the key feature — it lets you install a gauge without interrupting the main line routing or adding a separate tee fitting. The adapter drops into any -6AN plumbed system, so it works for fuel pressure, oil pressure, or any other application where you need to monitor line pressure.

Fragola manufactures these adapters in the USA, and the compact design keeps things tidy in tight engine compartments. At this price point, it is an inexpensive way to add gauge capability to an existing AN-plumbed setup.