InMotion WS9150S Wheel Seal - Front Inner
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InMotion

InMotion WS9150S Wheel Seal - Front Inner

Brand InMotion WS9150S
Position Front Inner
Material Nitrile
External Markings 1.938 x 2.578 x 0.292
Inside Diameter 1.91
Inside Diameter 48.6
Spring Material Sae 1008
Width 0.29199999999999998
Width 7.4
Outside Diameter 2.58
Outside Diameter 65.599999999999994
Shaft Diameter 1.9370000000000001
Shaft Diameter 49.2
Weight 23.5
Housing Bore 2.5779999999999998
Housing Bore 65.5
Fits Ford, Lincoln, Mazda, and Mercury · 145 vehicles

Precision-engineered seal. Creates a secure barrier against contaminants and helps prevent leaks.

Nitrile construction. Offers durable sealing performance for demanding driveline use.

Reliable differential seal. Protects sensitive internal components from debris and moisture.

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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.

This part fits 145 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelDrive TypeLitersCylindersPositionNotes
2011FordRanger—RWD——Front Inner—
2010FordRanger—RWD——Front Inner—
2010MazdaB2300————Front Inner—
2009FordRanger—RWD——Front Inner—
2009MazdaB2300————Front Inner—
2009MazdaB4000—RWD——Front Inner—
2008FordRanger—RWD——Front Inner—
2008MazdaB2300————Front Inner—
2008MazdaB4000—RWD——Front Inner—
2007FordRanger—RWD——Front Inner—
2007MazdaB2300————Front Inner—
2007MazdaB3000—RWD——Front Inner—
2007MazdaB4000—RWD——Front Inner—
2006FordRanger—RWD——Front Inner—
2006MazdaB2300————Front Inner—
2006MazdaB3000—RWD——Front Inner—
2006MazdaB4000—RWD——Front Inner—
2005FordExplorer Sport Trac—RWD——Front Inner—
2005FordRanger—RWD——Front Inner—
2005MazdaB2300————Front Inner—
2005MazdaB3000—RWD——Front Inner—
2005MazdaB4000—RWD——Front Inner—
2004FordExplorer Sport Trac—RWD——Front Inner—
2004FordRanger—RWD——Front Inner—
2004MazdaB2300————Front Inner—
2004MazdaB3000—RWD——Front Inner—
2004MazdaB4000—RWD——Front Inner—
2003FordExplorer—RWD——Front Inner—
2003FordExplorer Sport—RWD——Front Inner—
2003FordExplorer Sport Trac—RWD——Front Inner—
2003FordRanger—RWD——Front Inner—
2003MazdaB2300————Front Inner—
2003MazdaB3000—RWD——Front Inner—
2003MazdaB4000—RWD——Front Inner—
2002FordExplorer—RWD——Front Inner—
2002FordExplorer Sport—RWD——Front Inner—
2002FordExplorer Sport Trac—RWD——Front Inner—
2002FordRanger—RWD——Front Inner—
2002MazdaB2300————Front Inner—
2002MazdaB3000—RWD——Front Inner—
2002MazdaB4000—RWD——Front Inner—
2001FordExplorer—RWD——Front Inner—
2001FordExplorer Sport—RWD——Front Inner—
2001FordExplorer Sport Trac—RWD——Front Inner—
2001FordRanger—RWD——Front Inner—
2001MazdaB2300————Front Inner—
2001MazdaB2500————Front Inner—
2001MazdaB3000—RWD——Front Inner—
2001MazdaB4000—RWD——Front Inner—
2001MercuryMountaineer—RWD——Front Inner—
2000FordExplorer—RWD——Front Inner—
2000FordRanger—RWD——Front Inner—
2000MazdaB2500————Front Inner—
2000MazdaB3000—RWD——Front Inner—
2000MazdaB4000—RWD——Front Inner—
2000MercuryMountaineer—RWD——Front Inner—
1999FordExplorer—RWD——Front Inner—
1999FordRanger—RWD——Front Inner—
1999MazdaB2500————Front Inner—
1999MazdaB3000—RWD——Front Inner—
1999MazdaB4000—RWD——Front Inner—
1999MercuryMountaineer—RWD——Front Inner—
1998FordExplorer—RWD——Front Inner—
1998FordRanger—RWD——Front Inner—
1998MazdaB2500————Front Inner—
1998MazdaB3000—RWD——Front Inner—
1998MazdaB4000—RWD——Front Inner—
1998MercuryMountaineer—RWD——Front Inner—
1997FordExplorer—RWD——Front Inner—
1997FordRanger—RWD——Front Inner—
1997MazdaB2300—RWD——Front Inner—
1997MazdaB3000—RWD——Front Inner—
1997MazdaB4000—RWD——Front Inner—
1997MercuryMountaineer—RWD——Front Inner—
1996FordExplorer—RWD——Front Inner—
1996FordRanger—RWD——Front Inner—
1996MazdaB2300—RWD——Front Inner—
1996MazdaB3000—RWD——Front Inner—
1996MazdaB4000—RWD——Front Inner—
1995FordExplorer—RWD——Front Inner—
1995FordRanger—RWD——Front Inner—
1995MazdaB2300—RWD——Front Inner—
1995MazdaB3000—RWD——Front Inner—
1995MazdaB4000—RWD——Front Inner—
1993FordMustang——5.0LV8Front Inner—
1992FordMustang——5.0LV8Front Inner—
1991FordMustang——5.0LV8Front Inner—
1991LincolnMark VII————Front Inner—
1990FordMustang——5.0LV8Front Inner—
1990LincolnMark VII————Front Inner—
1989FordMustang——5.0LV8Front Inner—
1989LincolnMark VII————Front Inner—
1988FordMustang——5.0LV8Front Inner—
1988FordThunderbird————Front Inner—
1988LincolnMark VII————Front Inner—
1987FordMustang——5.0LV8Front Inner—
1987FordThunderbird————Front Inner—
1987LincolnContinental————Front Inner—
1987LincolnMark VII————Front Inner—
1986FordMustang——2.3LL4Front Inner—
1986FordThunderbird————Front Inner—
1986LincolnContinental————Front Inner—
1986LincolnMark VII————Front Inner—
1986MercuryCapri——5.0LV8Front Inner—
1986MercuryCougar————Front Inner—
1985FordMustang——2.3LL4Front Inner—
1985FordThunderbird————Front Inner—
1985LincolnContinental————Front Inner—
1985LincolnMark VII————Front Inner—
1985MercuryCapri——5.0LV8Front Inner—
1985MercuryCougar————Front Inner—
1984FordMustang——2.3LL4Front Inner—
1984FordThunderbird————Front Inner—
1984LincolnContinental————Front Inner—
1984LincolnMark VII————Front Inner—
1984MercuryCapri——5.0LV8Front Inner—
1984MercuryCougar————Front Inner—
1983LincolnContinental————Front Inner—
1982LincolnContinental————Front Inner—
1969FordMustangBoss 302———Front Inner—
1969LincolnContinental————Front Inner—
1968LincolnContinental————Front Inner—
1967FordLTD————Front Innerwith Disc Brakes
1967FordThunderbird————Front Inner—
1967LincolnContinental————Front Inner—
1967MercuryColony Park————Front Innerwith Disc Brakes
1967MercuryMarquis————Front Innerwith Disc Brakes
1967MercuryVillager————Front Inner6.4L V8 Engine(s)
1966FordLTD————Front Innerwith Disc Brakes
1966FordThunderbird————Front Inner—
1966LincolnContinental————Front Inner—
1966MercuryColony Park————Front Innerwith Disc Brakes
1966MercuryMarauder————Front Innerwith Disc Brakes
1966MercuryVillager————Front Inner6.4L V8 Engine(s)
1965FordThunderbird————Front Inner—
1965LincolnContinental————Front Inner—
1964FordThunderbird————Front Inner—
1964LincolnContinental————Front Inner—
1963FordThunderbird————Front Inner—
1963LincolnContinental————Front Inner—
1962FordThunderbird————Front InnerFrom 05/21/1962
1962LincolnContinental————Front Inner—
1961LincolnContinental————Front Inner—
1960MercuryColony Park————Front InnerConvertible Style
1959MercuryColony Park————Front InnerConvertible Body