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Dry sump oil cooling system — Harley-Davidson patent US5937817A (1999)

PatentUS5937817A
TypeUtility patent
Filed1998-06-23
Granted1999-08-17
InventorJohn W. Schanz
SystemOil system

“A dry sump oil cooling system for an internal combustion engine includes an oil pan reservoir, an oil return port, an oil pickup port, and a baffle. The oil pan reservoir has a first end, a second end, a length therebetween, a top and a bottom. Both the oil return port and the oil pickup port are…”

Full patent textDownload PDFShop oil system parts

Drawings (5 sheets)

Dry sump oil cooling system — sheet 1Dry sump oil cooling system — sheet 2Dry sump oil cooling system — sheet 3Dry sump oil cooling system — sheet 4Dry sump oil cooling system — sheet 5

Parts for this system

28-0402
ISO Mounting Stud Oil Tank to Battery Tray
$6.80
15-1520
Oil Filter Adapter Seal
$8.48
40-9956
Stock Spin On Oil Filter
$8.48
40-0221
Oil Filter Adapter Screw Kit Allen Type
$8.48

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.