SKU: VIB16610
UPC: 690092183530
MPN: 16610
The Vibrant Performance -4AN Male to M16x1.5 Male Adapter Fitting (MPN 16610) bridges an AN-standard -4 flare connection to a metric M16x1.5 male thread, letting builders tie braided AN line into oil and fuel components that came from the factory with metric ports. It's a part most people reach for when adapting popular oil pumps, fuel pumps, and fuel filters to an AN plumbing setup. Machined from 6061 aluminum alloy and finished in anodized black, it carries the same look as the rest of a black AN system. Anyone running custom fuel or oil routing through our adapter fittings will recognize the configuration.
Construction is 6061 aluminum alloy, chosen for its strength-to-weight ratio and resistance to fuel and oil exposure, with an anodized black finish applied for corrosion protection and a consistent appearance across a build. The fitting uses a male AN flare on one end and a male M16x1.5 metric thread on the other, and it ships with a crush washer to seal the metric side. That washer compresses against the mating surface to form an anti-leak seal without thread sealant on the flare side, since the 37-degree AN flare seals on the cone itself. The lightweight aluminum body keeps mass off the component port, which matters when stacking adapters, swivels, or hose ends in a tight engine bay.
Reach for this adapter when an oil pump, fuel pump, fuel pressure regulator, or filter has an M16x1.5 metric port and the rest of the system runs -4AN line. It threads directly into the metric port, seals with the included crush washer, and accepts a -4 AN hose end or union on the flare side. Builders assembling a full custom fuel system will want it alongside matching -4 unions and the right length of braided line from our hose selection. Order the crush washer count you need so every metric connection seals on the first torque.
It connects a -4AN male flare line or hose end to a component with an M16x1.5 male metric thread. That makes it useful for adapting oil pumps, fuel pumps, fuel pressure regulators, and fuel filters with metric ports into an AN-standard plumbing system.
Yes. The Vibrant Performance 16610 includes a crush washer for the M16x1.5 metric side. The washer compresses against the mating surface during torque-down to form an anti-leak seal, so you do not need thread sealant on the AN flare end.
The body is machined from 6061 aluminum alloy and finished in anodized black. The aluminum keeps weight low while resisting fuel and oil exposure, and the anodized finish adds corrosion protection and matches other black AN components in a build.
The -4AN end uses a 37-degree flare that seals on the cone where the AN hose end or union mates against it. No sealant or tape is needed on that connection. The metric M16x1.5 side seals separately using the included crush washer.
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