Motorcycle Oil Tank Hardware

MOTORCYCLE OIL TANK HARDWARE FOR HARLEY-DAVIDSON AND CUSTOM BUILDS

Oil tank hardware covers a narrow but critical range of components: the mounting hardware that holds the tank to the frame, the filler caps and gauges that seal and monitor it, the drain plugs that keep it from leaking, and the line fittings that connect it to the oiling system. Most of this hardware is platform-specific to a year range and model. Getting the wrong part means either a non-fit or a leak you will be chasing for months. The collection here is built primarily around Colony Machine USA-made hardware, covering Knucklehead, Panhead, Shovelhead, Big Twin, and Ironhead Sportster applications from 1936 through current production.

MOUNTING HARDWARE

Frame-to-tank mounting kits by platform and year:

• Knucklehead and Panhead: Colony oil tank mounting kit for 1936 to 1957 Harley-Davidson Knucklehead and Panhead in parkerized finish. The parkerized coating matches the original hardware appearance on pre-chrome era Big Twins where a polished finish would be incorrect for a restoration.

• Ironhead Sportster (1958 to 1967): Colony oil tank bolt mount kit, oil tank mount kit, and oil tank mount plates in both parkerized and CAD plated finishes for 1958 to 1967 Sportster XL. The Lowbrow Customs horseshoe oil tank upper tab mounting kit for 1952 to 1981 Sportster hardtail applications covers custom and chopped Sportsters where the stock mounting provision is no longer present.

• XLCH (1966 to 1969): Colony upper and lower oil tank mount kits, the lower oil tank bracket to motor case mount kit, and the horseshoe oil tank mounting bracket for 1953 to 1965 K/KH/XLCH in parkerized. The XLCH used a different mounting configuration than the XLH across these years, so confirm the model before ordering.

• Sportster XLCH (1970 to 1978): Colony oil tank bracket for 1970 to 1978 XLCH.

• Aftermarket Tank Replacement Hardware: Gasbox replacement hardware kits cover their own bolt-on oil tanks for 1965-up four-speed swingarm frames and rigid Big Twin frames, as well as Lowbrow Customs dished clamp-on steel oil tanks. If you are running a Gasbox or Lowbrow tank and have lost the original mounting hardware, these kits restore the correct fastener set.

FILLER CAPS, GAUGES, AND DRAIN PLUGS

• Filler Caps with Dipstick/Gauge: Colony filler cap and gauge kits for Ironhead XLCH (1958 to 1965 and 1966 to 1969) and Big Twins (1941 to 1964) in parkerized and CAD plated. Colony chrome oil tank cap and dipstick for 1936 to 1954 stock tanks with 1-1/4-20 thread.

• Replacement Caps: The Lowbrow Customs brass gas and oil filler cap is an unvented option for custom oil tanks and fabricated applications where a period-correct brass fitting suits the build direction. The Cycle Standard replacement oil tank cap covers Harley-Davidson OEM 62644-84T for late-model applications. Prism Supply Co. blade-style push-in oil plugs in polished and tumbled finish for a cleaner custom look. Browse motorcycle oil tank caps for the full cap range.

• Drain Plugs: Colony chrome oversized drain plug for 1965-up Big Twins and 1967-up Sportsters. Parkerized and CAD-plated oversized timing and oil tank plugs for earlier applications dating back to 1938. Colony transmission and oil tank drain plug for 2000-up Big Twin in chrome.

OIL LINE FITTINGS AND RETURN ELBOWS

• Line Connector Fittings: Colony oil tank line connector fittings for 1950 to 1964 Big Twins and 1952 to early 1961 Sportster K/KH/XL/XLH. Oil tank adapter fitting for filter applications on 1950 to 1964 Big Twins.

• Return and Feed Elbows: Oil return elbows for 1953 to early 1962 and late 1962 to 1965 XLCH. Oil feed line elbow for late 1962 to 1965 XLCH. These are CAD plated to match original hardware appearance.

• Vent Line Fittings: Colony vent line fittings in parkerized for pre-1965 Harley-Davidson twins, covering the OEM part 63533-15.

• Banjo Bolts: Colony oil line banjo bolt and washer kit for 1936 to 1937 Flathead and Knucklehead applications.

Browse motorcycle oil tanks for the full tank range alongside this hardware collection to source tank and mounting hardware together.