Harley FXR Shovelhead/Evo Master Cylinder 1982-E87 (OEM #42446-82A)
OEM unit assembly that we have disassembled and inspected. It has a clean bore, excellent threads on all connector ports, and seals are in good, pliable condition. The unit produced excellent pressure in our bench tests.
Factory references show part number #42446-82A, correct for FXR, FXRS, and FXRT models 1982-early 1987. Specific to this master cylinder type is the machining for a side-mounted stop light switch. In contrast, FXST and FXWG models mounted the brake light switch remotely at the brake T location, and FLT versions featured one hydraulic fitting on the top, not two.
For a comparative reference (based on our research):
FXR: two top ports, one side port
FXST: two top ports, no side port
FLT: one top port, one side port
Please review your own Factory references to verify proper fitment and port configuration requirements.
- Condition: Used
- Type: FXR
- Vintage: 1982-Early 1987
062022 B-10 (21 07 25, 6-83)