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Piston — Harley-Davidson patent US2180521A (1939)

PatentUS2180521A
TypeUtility patent
Filed1937-12-08
Granted1939-11-21
InventorWilliam S Harley
SystemEngine

“Nov. 21, 1939. w. s. HARLEY PISTON Filed Dec. 8, 1937 INVENTOR WILLIAM b- HARLEY MQLM MUL A1ToRNEYs Patented Nov. 21 1939 2,180,521 I UNITED STATES PATENT OFFICE PISTON William S. Harley, Milwaukee, Wis., assignor to Harley-Davidson Motor Company, Milwaukee, Wis., a corporation of Wisconsin…”

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Drawings (1 sheet)

Piston — sheet 1

Parts for this system

32-0064
Magneto to Crankcase Oil Seal Ring and Gasket Kit
$6.35
14-0555
Rear Caliper Piston O-Ring
$10.64
15-1380
Rear Master Cylinder Gasket Kit
$10.64
23-0825
Handlebar Master Cylinder Piston Cup
$10.64

Check fitment first — add your bike and we flag what fits.

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Drawing from the US patent record (via Google Patents). A patent shows the invention as filed, not necessarily the production part on your motorcycle — confirm fitment for your model and year. Independent aftermarket retailer, not affiliated with Harley-Davidson, Inc.