Moto Iron Screw-in Fuel Cap for Harley-Davidson and Custom

Two Moto Iron® Screw-in Fuel Caps for Harley-Davidson and Custom, one matte and one chrome, each with ribbed silicone inserts, are displayed against a white background.

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Moto Iron Screw-in Fuel Cap for Harley-Davidson and Custom

Finding a fuel cap doesn't have to be difficult. This one is nearly universal! If you have an OEM-style thread-in cap that's exposed (not recessed, flush-mounted, or located under a factory filler door), odds are good this one will work for you.

Choice of finish
Includes seal
Vented for right-side or center-fill use
Vent relocated for expanded fitment
Compatible with many OEM and aftermarket fuel tanks

This gas cap features a unique redesign so it's compatible with nearly any right-side or center-fill exposed Harley-Davidson screw-in tank from 1983 to present as well as nearly all aftermarket tanks that have a thread-in style cap. Note that the chrome cap is smooth (no fluted edge) to match the left-side faux filler cap/gauge found on many OE motorcycles. The black cap features flutes to give better purchase when removing and installing the cap at fill-ups.

If your fuel tank cap has seen better days, this is an affordable replacement.

Fits many stock Harley-Davidson applications 1982-up with exposed screw-in fuel caps
Not for use with bayonet-style tanks
Will not fit left-hand thread tanks (left-hand threads usually indicate the need for a non-vented cap)
Thread pattern 1.5"-6 UNS
Vented for right-side use on dual-cap tanks and tanks with left-side gauge
Vented for solo use on single-cap tanks
Low pressure relief vent in cap is recessed for filler neck vent tube on 1985-and-later applications; permits greater fitment range than most OEM caps
Will not fit dresser with center-mount cap (FLHT/FLTR/FLHX/FLTRX/FLHTCUTG/FLTRT) or liquid-cooled Sportster (RH)