Motorcycle Oil Tank Hardware

MOTORCYCLE OIL TANK HARDWARE, DRAIN PLUGS AND MOUNTING KITS FOR HARLEY-DAVIDSON AND TRIUMPH

Every oil tank on a Harley-Davidson or Triumph needs a drain plug, a filler cap, mounting hardware, and in many cases line fittings and vent connections. This collection is Colony Machine top-to-bottom for Harley-Davidson hardware, running from 1936 Big Twins and Knuckleheads through 2000-up Twin Cam applications, with Lowbrow Customs horseshoe oil tank mounting kits for Sportster hardtails and Triumph rubber mount kits rounding out the range.

DRAIN PLUGS AND TANK PLUGS

Colony makes oversized drain plugs, standard drain plugs, and timing and oil tank plugs across the full Harley-Davidson production span:

• Drain plugs: Oversized and standard drain plugs for Big Twins from 1965-up and Sportsters from 1967-up in chrome and zinc. Transmission and oil tank drain plug combinations for 2000-up Big Twins cover builds where both the transmission and oil tank drain at the same plug.

• Timing and oil tank plugs: Colony makes timing plugs that double as oil tank plugs across multiple production eras: 1938 to 1951 in CAD and parkerized, 1952 to 1969 FL and XL in chrome and CAD, and oversize versions for worn threads in CAD and parkerized finishes. The Colony #9861 fill plug and dipstick combination in chrome covers 1987-up Big Twin applications.

FILLER CAPS AND GAUGES

Colony oil tank filler cap and gauge assemblies cover Harley-Davidson from 1936 forward in the era-correct finishes:

• Big Twin: Filler cap and gauge sets for 1936 to 1940 and 1941 to 1965 Big Twins in parkerized and CAD. The chrome dipstick and cap combination covers current threading on custom oil tanks.

• Sportster: Filler cap and gauge for 1958 to 1965 XLCH in CAD, and filler cap for 1966 to 1969 XLCH. Cycle Standard also makes a direct OEM replacement oil tank cap for 1984-up Harley-Davidson applications.

• Custom filler caps: Lowbrow Customs makes cast aluminum oil and gas filler caps in spinner and knurled profiles with integrated weld-in steel bungs for custom oil tanks. The spinner version is the most reviewed cap in the collection at 12 reviews.

MOUNTING KITS AND BRACKETS

Colony covers Harley-Davidson oil tank mounting across every production era:

• Knucklehead and Panhead Big Twins: Mounting kits for 1936 to 1957 Big Twins in parkerized and CAD.

• Sportsters: Mount plates and mount kits for 1958 to 1967 XL applications in multiple configurations. Ironhead XLCH mounting brackets and bracket-to-case mount kits covering 1966 to 1969 applications. Oil tank bracket for 1970 to 1978 XLCH.

• Horseshoe tank mounting: Lowbrow Customs horseshoe oil tank upper tab mounting kits for Sportster hardtail applications in 1952 to 1981 and 1982 to 2003 versions. Mooneyes cast aluminum MOON-branded oil tank mounting brackets for builders who want a show-quality detail piece at the mount.

LINE FITTINGS AND TRIUMPH HARDWARE

Colony oil feed elbows and return elbows cover Harley-Davidson Sportster applications from 1953 through 1965, and the Colony oil line vent fittings cover pre-1965 Big Twins where the original fittings are gone. The Lowbrow Customs rubber mount bracket kit for 500 and 650cc Unit Triumph motorcycles covers builders mounting a Lowbrow oil tank to a Triumph with the correct rubber isolation and brass washer hardware.

Browse motorcycle oil tanks, motorcycle oil tank caps and motorcycle oil pumps and components for the full oil system range.