Sierra Marine engine parts are designed to meet or exceed the OEM part they are intended to replace and they are backed by the SeaStar Solutions Two-Year Warranty—one of the best in the business.

Our selection includes replacement parts for most engine applications on the water today—including MerCruiser, OMC, Johnson/Evinrude, Chrysler/Force, Volvo and more.

How to find the oil seal you need

Many of the oil seals we offer fit multiple applications. Notice in the list below that in addition to Chrysler/Force applications, there are a variety of other engine applications for the oil seals offered here. Oil seals can also be selected by outside diameter, shaft size and width, which appear for some, but not all seals in the table.

The Sierra Engine Parts Selector

If you do not see the oil seal (or other engine part) you need, please visit the Sierra Engine Parts Selector, where you can search by engine make, model, serial number or year of manufacture.

Sierra #	Application	Replaces OEM Part #	O.D.	Shaft Size	Width	Model
18-0500	Chrysler/Force/US Marine	26-817472	—	—	—	10525442
18-0500	Mallory	9-76131	—	—	—	10525442
18-0502	Chrysler/Force/US Marine	26-819396	—	—	—	10525467
18-0503	Chrysler/Force/US Marine	26-F40307-2	—	—	—	10525475
18-0579	Chrysler/Force/US Marine	26-41131	1.313″ or 33.4mm	1.141″ or 29mm	0.344″ or 8.5mm	10525699
18-0579	Mallory	9-76127	1.313″ or 33.4mm	1.141″ or 29mm	0.344″ or 8.5mm	10525699
18-0579	Mercury Marine	26-41131	1.313″ or 33.4mm	1.141″ or 29mm	0.344″ or 8.5mm	10525699
18-0579	Sears	26-41131	1.313″ or 33.4mm	1.141″ or 29mm	0.344″ or 8.5mm	10525699
18-0580	Chrysler/Force/US Marine	26-41132	1.250″ or 31.8mm	0.750″ or 19.05mm	0.312″ or 7.9mm	10525707
18-0580	Mallory	9-76128	1.250″ or 31.8mm	0.750″ or 19.05mm	0.312″ or 7.9mm	10525707
18-0580	Mercury Marine	26-41132	1.250″ or 31.8mm	0.750″ or 19.05mm	0.312″ or 7.9mm	10525707
18-0580	Sears	26-41132	1.250″ or 31.8mm	0.750″ or 19.05mm	0.312″ or 7.9mm	10525707
18-0583	Chrysler/Force/US Marine	26-43035	1.496″ or 38mm	1.063″ or 27mm	0.197″ or 5mm	10525723
18-0583	GLM	85160	1.496″ or 38mm	1.063″ or 27mm	0.197″ or 5mm	10525723
18-0583	Honda Outboard	91251-ZW1-003	1.496″ or 38mm	1.063″ or 27mm	0.197″ or 5mm	10525723
18-0583	Mallory	9-76129	1.496″ or 38mm	1.063″ or 27mm	0.197″ or 5mm	10525723
18-0583	Mercury Marine	26-43035	1.496″ or 38mm	1.063″ or 27mm	0.197″ or 5mm	10525723
18-0584	Chrysler/Force/US Marine	26-F346118, 26-66022, F346116, F901118-2, F901118-1, F901118	1.000″ or 25.4mm	0.056″ or 1.4mm	0.312″ or 7.9mm	10525731
18-0584	GLM	86840	1.000″ or 25.4mm	0.056″ or 1.4mm	0.312″ or 7.9mm	10525731
18-0584	Mercury Marine	26-66022	1.000″ or 25.4mm	0.056″ or 1.4mm	0.312″ or 7.9mm	10525731
18-0586	Chrysler/Force/US Marine	26-99325	1.125″ or 28.6mm	0.675″ or 17.1mm	0.250″ or 6.4mm	10525756
18-0586	Mercury Marine	26-99325	1.125″ or 28.6mm	0.675″ or 17.1mm	0.250″ or 6.4mm	10525756
18-0586	Sears	26-99325	1.125″ or 28.6mm	0.675″ or 17.1mm	0.250″ or 6.4mm	10525756
18-0593	Chrysler/Force/US Marine	26-F901307-2	—	—	—	10525780

Select a Product

18-0500 Oil Seal for Chrysler Force Outboard Motors, 18-0502 Oil Seal for Chrysler Force Outboard Motors, 18-0503 Oil Seal for Chrysler Force Outboard Motors, 18-0579 Oil Seal for Chrysler Force Outboard Motors, 18-0580 Oil Seal for Chrysler Force Outboard Motors, 18-0584 Oil Seal for Chrysler Force Outboard Motors, 18-0583 Oil Seal for Chrysler Force Outboard Motors, 18-0586 Oil Seal for Chrysler Force Outboard Motors, 18-0593 Oil Seal for Chrysler Force Outboard Motors