Thermally insulating element for an engine valve assembly — Harley-Davidson patent US7559302B2 (2009)
PatentUS7559302B2
TypeUtility patent
Filed2007-11-15
Granted2009-07-14
InventorJohn Cullen
SystemEngine
“A cylinder head assembly for an internal combustion engine including a cylinder head at least partially defining a flow path through the engine, including an intake port, an exhaust port, and a combustion chamber disposed between the intake port and the exhaust port. A valve is coupled to the…”
Drawings (6 sheets)






Parts for this system
32-0064
Magneto to Crankcase Oil Seal Ring and Gasket Kit
$6.3514-0555
Rear Caliper Piston O-Ring
$10.6415-1380
Rear Master Cylinder Gasket Kit
$10.6423-0825
Handlebar Master Cylinder Piston Cup
$10.64Check 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.