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InMotion WS9150S Wheel Seal - Front InnerOE Quality 60-Day Returns
InMotion WS9150S Wheel Seal - Front Inner - view 1
InMotion WS9150S Wheel Seal - Front Inner - view 2
Part #: WS9150S

InMotion WS9150S Wheel Seal - Front Inner

Front Inner
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🚗Fitment: Ford, Lincoln, Mazda, and Mercury, B2300, B2500, B3000, B4000, Capri, Colony Park, Continental, Cougar, Explorer, Explorer Sport, Explorer Sport Trac, LTD, Marauder, Mark VII, Marquis, Mountaineer, Mustang, Ranger, Thunderbird, and Villager
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Front Inner Differential Pinion Seal for Ford and Mazda

The InMotion WS9150S is a front inner differential pinion seal built with nitrile material and a steel spring to help maintain a secure seal at the pinion area. Its precise dimensions support a tight fit at the housing bore and shaft interface, helping keep contaminants out and gear oil in.

Compatible With 1959-2011 Ford, Mazda, Mercury, and Lincoln applications listed below, this seal is a direct-fit service part for a wide range of front inner positions. The WS9150S is sized at 1.91 in. inside diameter, 2.58 in. outside diameter, and 0.292 in. width for applications that match the specified dimensions.

Key Features

  • Nitrile sealing material for oil resistance and durability
  • SAE 1008 spring material for consistent sealing tension
  • Inside diameter: 1.91 in. / 48.6 mm
  • Outside diameter: 2.58 in. / 65.6 mm
  • Housing bore: 2.578 in. / 65.5 mm
  • Width: 0.292 in. / 7.4 mm
  • External markings: 1.938 x 2.578 x 0.292
  • Part number WS9150S for catalog and service matching

Detailed Description

InMotion WS9150S is engineered to create a reliable barrier at the differential pinion, helping protect internal driveline components from moisture, road debris, and lubricant loss. The seal’s dimensions and nitrile construction make it a practical service replacement for front inner applications on vehicles such as the Ford Ranger, Ford Explorer, Mazda B3000, Mazda B4000, and Mercury Mountaineer when the listed measurements and position match. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

  • Gear oil seepage at the differential pinion area
  • Contamination from dirt, water, and road debris
  • Wear caused by a weakened or hardened seal lip
  • Loss of sealing tension at the front inner position
  • Service needs on Ford Ranger, Ford Explorer, and Mazda B-series front inner driveline applications

Installation Notes and Tips

Verify the housing bore, shaft diameter, and seal width before installation. Clean the sealing surface thoroughly and inspect the pinion area for scoring or wear that could affect sealing performance. Confirm the front inner position and compare the dimensions to the original part before pressing the seal into place.

Quality Assurance

Built from nitrile with an SAE 1008 spring, the WS9150S is specified for dimensional accuracy and dependable sealing performance in driveline service. InMotion’s precision-focused construction supports consistent fitment across the listed Ford, Mazda, Mercury, and Lincoln applications.

BrandInMotion
Part NumberWS9150S
MaterialNitrile
External Markings1.938 x 2.578 x 0.292
Inside Diameter1.91
Inside Diameter48.6
Spring MaterialSae 1008
Width0.29199999999999998
Width7.4
Outside Diameter2.58
Outside Diameter65.599999999999994
Shaft Diameter1.9370000000000001
Shaft Diameter49.2
Weight23.5
Housing Bore2.5779999999999998
Housing Bore65.5

This part fits 145 vehicles. Search below:

YearMakeModelSubmodelDrive TypeLitersCylindersPositionNotes
2011FordRangerRWDFront Inner
2010FordRangerRWDFront Inner
2010MazdaB2300Front Inner
2009FordRangerRWDFront Inner
2009MazdaB2300Front Inner
2009MazdaB4000RWDFront Inner
2008FordRangerRWDFront Inner
2008MazdaB2300Front Inner
2008MazdaB4000RWDFront Inner
2007FordRangerRWDFront Inner
2007MazdaB2300Front Inner
2007MazdaB3000RWDFront Inner
2007MazdaB4000RWDFront Inner
2006FordRangerRWDFront Inner
2006MazdaB2300Front Inner
2006MazdaB3000RWDFront Inner
2006MazdaB4000RWDFront Inner
2005FordExplorer Sport TracRWDFront Inner
2005FordRangerRWDFront Inner
2005MazdaB2300Front Inner
2005MazdaB3000RWDFront Inner
2005MazdaB4000RWDFront Inner
2004FordExplorer Sport TracRWDFront Inner
2004FordRangerRWDFront Inner
2004MazdaB2300Front Inner
2004MazdaB3000RWDFront Inner
2004MazdaB4000RWDFront Inner
2003FordExplorerRWDFront Inner
2003FordExplorer SportRWDFront Inner
2003FordExplorer Sport TracRWDFront Inner
2003FordRangerRWDFront Inner
2003MazdaB2300Front Inner
2003MazdaB3000RWDFront Inner
2003MazdaB4000RWDFront Inner
2002FordExplorerRWDFront Inner
2002FordExplorer SportRWDFront Inner
2002FordExplorer Sport TracRWDFront Inner
2002FordRangerRWDFront Inner
2002MazdaB2300Front Inner
2002MazdaB3000RWDFront Inner
2002MazdaB4000RWDFront Inner
2001FordExplorerRWDFront Inner
2001FordExplorer SportRWDFront Inner
2001FordExplorer Sport TracRWDFront Inner
2001FordRangerRWDFront Inner
2001MazdaB2300Front Inner
2001MazdaB2500Front Inner
2001MazdaB3000RWDFront Inner
2001MazdaB4000RWDFront Inner
2001MercuryMountaineerRWDFront Inner
2000FordExplorerRWDFront Inner
2000FordRangerRWDFront Inner
2000MazdaB2500Front Inner
2000MazdaB3000RWDFront Inner
2000MazdaB4000RWDFront Inner
2000MercuryMountaineerRWDFront Inner
1999FordExplorerRWDFront Inner
1999FordRangerRWDFront Inner
1999MazdaB2500Front Inner
1999MazdaB3000RWDFront Inner
1999MazdaB4000RWDFront Inner
1999MercuryMountaineerRWDFront Inner
1998FordExplorerRWDFront Inner
1998FordRangerRWDFront Inner
1998MazdaB2500Front Inner
1998MazdaB3000RWDFront Inner
1998MazdaB4000RWDFront Inner
1998MercuryMountaineerRWDFront Inner
1997FordExplorerRWDFront Inner
1997FordRangerRWDFront Inner
1997MazdaB2300RWDFront Inner
1997MazdaB3000RWDFront Inner
1997MazdaB4000RWDFront Inner
1997MercuryMountaineerRWDFront Inner
1996FordExplorerRWDFront Inner
1996FordRangerRWDFront Inner
1996MazdaB2300RWDFront Inner
1996MazdaB3000RWDFront Inner
1996MazdaB4000RWDFront Inner
1995FordExplorerRWDFront Inner
1995FordRangerRWDFront Inner
1995MazdaB2300RWDFront Inner
1995MazdaB3000RWDFront Inner
1995MazdaB4000RWDFront Inner
1993FordMustang5.0LV8Front Inner
1992FordMustang5.0LV8Front Inner
1991FordMustang5.0LV8Front Inner
1991LincolnMark VIIFront Inner
1990FordMustang5.0LV8Front Inner
1990LincolnMark VIIFront Inner
1989FordMustang5.0LV8Front Inner
1989LincolnMark VIIFront Inner
1988FordMustang5.0LV8Front Inner
1988FordThunderbirdFront Inner
1988LincolnMark VIIFront Inner
1987FordMustang5.0LV8Front Inner
1987FordThunderbirdFront Inner
1987LincolnContinentalFront Inner
1987LincolnMark VIIFront Inner
1986FordMustang2.3LL4Front Inner
1986FordThunderbirdFront Inner
1986LincolnContinentalFront Inner
1986LincolnMark VIIFront Inner
1986MercuryCapri5.0LV8Front Inner
1986MercuryCougarFront Inner
1985FordMustang2.3LL4Front Inner
1985FordThunderbirdFront Inner
1985LincolnContinentalFront Inner
1985LincolnMark VIIFront Inner
1985MercuryCapri5.0LV8Front Inner
1985MercuryCougarFront Inner
1984FordMustang2.3LL4Front Inner
1984FordThunderbirdFront Inner
1984LincolnContinentalFront Inner
1984LincolnMark VIIFront Inner
1984MercuryCapri5.0LV8Front Inner
1984MercuryCougarFront Inner
1983LincolnContinentalFront Inner
1982LincolnContinentalFront Inner
1969FordMustangBoss 302Front Inner
1969LincolnContinentalFront Inner
1968LincolnContinentalFront Inner
1967FordLTDFront Innerwith Disc Brakes
1967FordThunderbirdFront Inner
1967LincolnContinentalFront Inner
1967MercuryColony ParkFront Innerwith Disc Brakes
1967MercuryMarquisFront Innerwith Disc Brakes
1967MercuryVillagerFront Inner6.4L V8 Engine(s)
1966FordLTDFront Innerwith Disc Brakes
1966FordThunderbirdFront Inner
1966LincolnContinentalFront Inner
1966MercuryColony ParkFront Innerwith Disc Brakes
1966MercuryMarauderFront Innerwith Disc Brakes
1966MercuryVillagerFront Inner6.4L V8 Engine(s)
1965FordThunderbirdFront Inner
1965LincolnContinentalFront Inner
1964FordThunderbirdFront Inner
1964LincolnContinentalFront Inner
1963FordThunderbirdFront Inner
1963LincolnContinentalFront Inner
1962FordThunderbirdFront InnerFrom 05/21/1962
1962LincolnContinentalFront Inner
1961LincolnContinentalFront Inner
1960MercuryColony ParkFront InnerConvertible Style
1959MercuryColony ParkFront InnerConvertible Body

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.