SKU: FRG496321-BL
UPC: 822320023657
MPN: 496321-BL
The FRAGOLA 496321-BL is a -4 AN female-to-female 90-degree coupler in black anodized aluminum, built for fabricators routing fuel, oil, coolant, or brake lines through tight engine bays. The swivel tube-style design lets you change a line's direction by a full 90 degrees without kinking the hose or fighting a hard bend. It mates to standard -4 AN hardware on both ends, so it drops into existing builds without adapters. If you're plumbing a custom system and need to turn a corner cleanly, this is the part that does it. Browse the full fittings, hoses, and valves catalog for matching hardware.
Machined from 6061 aluminum alloy and finished in black anodize, the Model 963 coupler uses a radius inlet on the tube-style body to keep flow up through the bend. The female ends accept -4 AN flare connections on both sides, making it a true female-to-female union that joins two male hose ends or fittings at a right angle. The black anodized surface resists corrosion and shrugs off the heat and fluid exposure common to engine-bay plumbing. It ships sold individually. Pair it with -4 AN swivel hose ends, straight unions, or sealing plugs to complete a run. For other angles and connections, the swivel fitting selection and -4 union options cover most layouts.
Reach for this coupler when a -4 line needs to turn 90 degrees in a confined space — around a frame rail, behind a fuel pump, or where a straight run would crowd other components. It's common on fuel return lines, brake plumbing, oil cooler circuits, and dry-sump setups in race and street builds. The female-to-female layout means you connect two existing male ends rather than re-terminating a hose. When you need to extend or cap the run, check the -4 cap and tee options in the same catalog. We stock the matching -4 AN hose ends and hardware to finish the job.
The -4 designation is the AN size standard for the fitting, which corresponds to roughly a 1/4-inch nominal line. Both ends of this FRAGOLA coupler are -4 AN female, so they connect to standard -4 AN male hose ends and fittings without adapters.
Both ends are female. It joins two -4 AN male hose ends or male fittings at a 90-degree angle, acting as a union between them. If you need a male-to-male connection instead, look at the straight union options in our fittings catalog.
FRAGOLA lists this coupler for fuel, oil, coolant, and brake system applications in performance and motorsports vehicles. The 6061 aluminum body with black anodized finish resists the corrosion and heat common to engine-bay plumbing.
The swivel tube-style design lets the line change direction a full 90 degrees while the radius inlet keeps flow up through the bend. It helps you route hose around tight obstacles without kinking and makes final alignment easier during install.
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