InMotion WS3393 Engine Crankshaft Seal - Rear
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InMotion

InMotion WS3393 Engine Crankshaft Seal - Rear

Brand InMotion WS3393
Position Rear
Material Fluoro-elastomer
External Markings Tto f879 1
Inside Diameter 2.38
Inside Diameter 60.4
Thickness 0.4
Thickness 9.9
Outside Diameter 3
Outside Diameter 76.3
Shaft Diameter 2.375
Shaft Diameter 60.4
Weight 32.4
Housing Bore 3.000
Housing Bore 76.2
Fits DeTomaso, Elva, Ford, Land Rover, Lotus, Mazda, Mercury, Merkur, Morgan, Saab, Turner, and TVR · 267 vehicles

Fluoro-elastomer construction. Built for dependable sealing performance in differential service.

Tight sealing barrier. Helps keep contaminants out and fluid in.

Precision fitment. Matches listed Viton-type rear differential applications.

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Overview

InMotion WS3393 is a rear differential pinion seal built with fluoro-elastomer material for dependable sealing performance. It helps keep contaminants out and fluid in, supporting the internal components of the differential on a wide range of Ford, Mazda, Mercury, and other applications.

Compatible With Ford Ranger, Ford Explorer, Ford Mustang, Mazda B4000, and Mercury Mountaineer rear differential applications, this seal is a direct-fit service part for vehicles that require the specified Viton-type design. The WS3393 part number is also useful when matching the correct seal for service work on Ford Ranger and Ford Explorer driveline repairs.

Key Features

  • Fluoro-elastomer construction for sealing durability
  • Designed to maintain a tight barrier against moisture and debris
  • Rear differential pinion seal application
  • Matches Viton-type fitment notes across listed vehicles
  • External marking: TTO F879 1

Detailed Description

The InMotion WS3393 is engineered as a differential pinion seal for rear axle service. Its fluoro-elastomer material is selected for resistance to sealing wear in demanding driveline environments, helping preserve differential fluid and protect internal components from contamination. The listed dimensions include a 2.38-inch inside diameter, 3.00-inch outside diameter, and 0.4-inch thickness, which are important when verifying fitment during replacement work.

This seal fits 1983-2011 Ford Ranger, rear; 1991-2010 Ford Explorer, rear; 2005-2010 Ford Mustang, rear; 1994-2010 Mazda B4000, rear; and 1998-2010 Mercury Mountaineer, rear. It also covers additional rear applications including Ford Explorer Sport Trac, Ford Explorer Sport, Ford Aerostar, Ford Bronco II, Ford Fiesta, Ford Pinto, Mercury Bobcat, Mercury Capri, Mazda Navajo, Land Rover LR3, and several classic Ford, Lotus, Saab, Morgan, TVR, Elva, Turner, and DeTomaso models. The WS3393 part number should be matched to the vehicle’s rear differential seal specification before installation.

What It Helps Fix

  • Differential fluid seepage at the pinion seal
  • Contamination entering the differential housing
  • Wear-related sealing loss at the pinion area
  • Service issues caused by an incorrect seal size
  • Leak concerns during rear differential maintenance

Installation Notes

Verify shaft diameter, housing bore, and seal dimensions before installation. Clean the sealing surface thoroughly and inspect the pinion area for wear or damage that could affect sealing performance. Confirm the vehicle uses the listed rear Viton-type application before replacing the seal.

Quality Assurance

InMotion specifies precision engineering and high-quality materials for this seal, with fluoro-elastomer construction selected for reliable differential sealing performance. The WS3393 is built to support consistent service results in rear differential applications.

This part fits 267 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2011FordRanger4.0LV6RearViton Type
2010FordExplorer4.0LV6RearViton Type
2010FordExplorer Sport Trac4.0LV6RearViton Type
2010FordMustang4.0LV6RearViton Type
2010FordRanger4.0LV6RearViton Type
2010MazdaB40004.0LV6RearViton Type
2010MercuryMountaineer4.0LV6RearViton Type
2009FordExplorer4.0LV6RearViton Type
2009FordMustang4.0LV6RearViton Type
2009FordRanger4.0LV6RearViton Type
2009Land RoverLR34.0LV6RearViton Type
2009MazdaB40004.0LV6RearViton Type
2009MercuryMountaineer4.0LV6RearViton Type
2008FordExplorer4.0LV6RearViton Type
2008FordExplorer Sport Trac4.0LV6RearViton Type
2008FordMustang4.0LV6RearViton Type
2008FordRanger4.0LV6RearViton Type
2008Land RoverLR34.0LV6RearViton Type
2008MazdaB40004.0LV6RearViton Type
2008MercuryMountaineer4.0LV6RearViton Type
2007FordExplorer4.0LV6RearViton Type
2007FordExplorer Sport Trac4.0LV6RearViton Type
2007FordMustang4.0LV6RearViton Type
2007FordRanger4.0LV6RearViton Type
2007Land RoverLR34.0LV6RearViton Type
2007MazdaB40004.0LV6RearViton Type
2007MercuryMountaineer4.0LV6RearViton Type
2006FordExplorer4.0LV6RearViton Type
2006FordMustang4.0LV6RearViton Type
2006FordRanger4.0LV6RearViton Type
2006Land RoverLR34.0LV6RearViton Type
2006MazdaB40004.0LV6RearViton Type
2006MercuryMountaineer4.0LV6RearViton Type
2005FordExplorer4.0LV6RearViton Type
2005FordExplorer Sport Trac4.0LV6RearViton Type
2005FordMustang4.0LV6RearViton Type
2005FordRanger4.0LV6RearViton Type
2005Land RoverLR34.0LV6RearViton Type
2005MazdaB40004.0LV6RearViton Type
2005MercuryMountaineer4.0LV6RearViton Type
2004FordExplorer4.0LV6RearViton Type
2004FordExplorer Sport Trac4.0LV6RearViton Type
2004FordRanger4.0LV6RearViton Type
2004MazdaB40004.0LV6RearViton Type
2004MercuryMountaineer4.0LV6RearViton Type
2003FordExplorer4.0LV6RearViton Type
2003FordExplorer Sport4.0LV6RearViton Type
2003FordExplorer Sport Trac4.0LV6RearViton Type
2003FordRanger4.0LV6RearViton Type
2003MazdaB40004.0LV6RearViton Type
2003MercuryMountaineer4.0LV6RearViton Type
2002FordExplorer4.0LV6RearViton Type
2002FordExplorer Sport4.0LV6RearViton Type
2002FordExplorer Sport Trac4.0LV6RearViton Type
2002FordRanger4.0LV6RearViton Type
2002MazdaB40004.0LV6RearViton Type
2002MercuryMountaineer4.0LV6RearViton Type
2001FordExplorer4.0LV6RearViton Type
2001FordExplorer Sport4.0LV6RearViton Type
2001FordExplorer Sport Trac4.0LV6RearViton Type
2001FordRanger4.0LV6RearViton Type
2001MazdaB40004.0LV6RearViton Type
2001MercuryMountaineer4.0LV6RearViton Type
2000FordExplorer4.0LV6RearViton Type
2000FordRanger4.0LV6RearViton Type
2000MazdaB40004.0LV6RearViton Type
2000MercuryMountaineer4.0LV6RearViton Type
1999FordExplorer4.0LV6RearViton Type
1999FordRanger4.0LV6RearViton Type
1999MazdaB40004.0LV6RearViton Type
1999MercuryMountaineer4.0LV6RearViton Type
1998FordExplorer4.0LV6RearViton Type
1998FordRanger4.0LV6RearViton Type
1998MazdaB40004.0LV6RearViton Type
1998MercuryMountaineer4.0LV6RearViton Type
1997FordAerostar4.0LV6RearViton Type
1997FordExplorer4.0LV6RearViton Type
1997FordRanger4.0LV6RearViton Type
1997MazdaB40004.0LV6RearViton Type
1996FordAerostar4.0LV6RearViton Type
1996FordExplorer4.0LV6RearViton Type
1996FordRanger4.0LV6RearViton Type
1996MazdaB40004.0LV6RearViton Type
1995FordAerostar4.0LV6RearViton Type
1995FordExplorer4.0LV6RearViton Type
1995FordRanger4.0LV6RearViton Type
1995MazdaB40004.0LV6RearViton Type
1994FordAerostar4.0LV6RearViton Type
1994FordExplorer4.0LV6RearViton Type
1994FordRanger4.0LV6RearViton Type
1994MazdaB40004.0LV6RearViton Type
1994MazdaNavajo4.0LV6RearViton Type
1993FordAerostar4.0LV6RearViton Type
1993FordExplorer4.0LV6RearViton Type
1993FordRanger4.0LV6RearViton Type
1993MazdaNavajo4.0LV6RearViton Type
1992FordAerostar4.0LV6RearViton Type
1992FordExplorer4.0LV6RearViton Type
1992FordRanger4.0LV6RearViton Type
1992MazdaNavajo4.0LV6RearViton Type
1991FordAerostar4.0LV6RearViton Type
1991FordExplorer4.0LV6RearViton Type
1991FordRanger2.9LV6RearViton Type
1991MazdaNavajo4.0LV6RearViton Type
1990FordAerostar4.0LV6RearViton Type
1990FordBronco II2.9LV6RearViton Type
1990FordRanger4.0LV6RearViton Type
1989FordBronco II2.9LV6RearViton Type
1989FordRanger2.9LV6RearViton Type
1989MerkurScorpio2.9LV6RearViton Type
1988FordBronco II2.9LV6RearViton Type
1988FordRanger2.9LV6RearViton Type
1988MerkurScorpio2.9LV6RearViton Type
1987FordBronco II2.9LV6RearViton Type
1987FordRanger2.9LV6RearViton Type
1986FordAerostar2.8LV6RearViton Type
1986FordBronco II2.9LV6RearViton Type
1986FordRanger2.9LV6RearViton Type
1985FordBronco II2.8LV6RearViton Type
1985FordRanger2.8LV6RearViton Type
1984FordBronco II2.8LV6RearViton Type
1984FordRanger2.8LV6RearViton Type
1983FordRanger2.8LV6RearViton Type
1981Morgan4/41.6LL4RearViton Type
1980FordFiesta1.6LL4RearViton Type
1980Morgan4/41.6LL4RearViton Type
1979FordFiesta1.6LL4RearViton Type
1979FordMustang2.8LV6RearViton Type
1979FordPinto2.8LV6RearViton Type
1979MercuryBobcat2.8LV6RearViton Type
1979MercuryCapri2.8LV6RearViton Type
1978FordFiesta1.6LL4RearViton Type
1978FordMustang II2.8LV6RearViton Type
1978FordPinto2.8LV6RearViton Type
1978MercuryBobcat2.8LV6RearViton Type
1977FordMustang II2.8LV6RearViton Type
1977FordPinto2.8LV6RearViton Type
1977MercuryBobcat2.8LV6RearViton Type
1977MercuryCapri2.8LV6RearViton Type
1976FordMustang II2.8LV6RearViton Type
1976FordPinto2.8LV6RearViton Type
1976MercuryBobcat2.8LV6RearViton Type
1976MercuryCapri2.8LV6RearViton Type
1975FordMustang II2.8LV6RearViton Type
1975FordPinto2.8LV6RearViton Type
1975LotusElan1.6LL4RearViton Type
1975LotusEuropa1.6LL4RearViton Type
1975LotusSeven1.6LL4RearViton Type
1975MercuryBobcat2.8LV6RearViton Type
1975MercuryCapri2.8LV6RearViton Type
1974FordMustang II2.8LV6RearViton Type
1974FordPinto2.0LL4RearViton Type
1974LotusElan1.6LL4RearViton Type
1974LotusEuropa1.6LL4RearViton Type
1974LotusSeven1.6LL4RearViton Type
1974MercuryCapri2.8LV6RearViton Type
1974Morgan4/41.6LL4RearViton Type
1974MorganPlus Four1.6LL4RearViton Type
1974SaabSonett1.7LV4RearViton Type
1973FordPinto2.0LL4RearViton Type
1973LotusElan1.6LL4RearViton Type
1973LotusEuropa1.6LL4RearViton Type
1973LotusSeven1.6LL4RearViton Type
1973MercuryCapri2.0LL4RearViton Type
1973Morgan4/41.6LL4RearViton Type
1973MorganPlus Four1.6LL4RearViton Type
1973Saab951.7LV4RearViton Type
1973Saab961.7LV4RearViton Type
1973SaabSonett1.7LV4RearViton Type
1972FordPinto2.0LL4RearViton Type
1972LotusElan1.6LL4RearViton Type
1972LotusEuropa1.6LL4RearViton Type
1972LotusSeven1.3LL4RearViton Type
1972MercuryCapri1.6LL4RearViton Type
1972Morgan4/41.6LL4RearViton Type
1972MorganPlus Four1.6LL4RearViton Type
1972Saab951.7LV4RearViton Type
1972Saab961.7LV4RearViton Type
1972SaabSonett1.7LV4RearViton Type
1971FordPinto1.6LL4RearViton Type
1971LotusElan1.6LL4RearViton Type
1971LotusEuropa1.6LL4RearViton Type
1971LotusSeven1.6LL4RearViton Type
1971MercuryCapri1.6LL4RearViton Type
1971Morgan4/41.6LL4RearViton Type
1971MorganPlus Four1.6LL4RearViton Type
1971Saab951.7LV4RearViton Type
1971Saab961.7LV4RearViton Type
1971SaabSonett1.7LV4RearViton Type
1971TVRVixen1.6LL4RearViton Type
1970FordCortina1.6LL4RearViton Type
1970LotusElan1.6LL4RearViton Type
1970LotusSeven1.3LL4RearViton Type
1970MercuryCapri1.6LL4RearViton Type
1970Morgan4/41.6LL4RearViton Type
1970MorganPlus Four1.6LL4RearViton Type
1970Saab951.5LV4RearViton Type
1970Saab961.7LV4RearViton Type
1970SaabSonett1.7LV4RearViton Type
1970TVRVixen1.6LL4RearViton Type
1969FordCortina1.6LL4RearViton Type
1969LotusElan1.6LL4RearViton Type
1969LotusSeven1.6LL4RearViton Type
1969Morgan4/41.6LL4RearViton Type
1969MorganPlus Four1.6LL4RearViton Type
1969Saab951.5LV4RearViton Type
1969Saab961.5LV4RearViton Type
1969SaabSonett1.5LV4RearViton Type
1969TVRVixen1.6LL4RearViton Type
1968FordCortina1.6LL4RearViton Type
1968LotusElan1.6LL4RearViton Type
1968LotusSeven1.3LL4RearViton Type
1968LotusSuper Seven1.3LL4RearViton Type
1968Saab951.5LV4RearViton Type
1968Saab961.5LV4RearViton Type
1968SaabSonett1.5LV4RearViton Type
1968TVRVixen1.6LL4RearViton Type
1967FordAnglia1.2LL4RearViton Type
1967FordCortina1.5LL4RearViton Type
1967LotusElan1.6LL4RearViton Type
1967LotusSeven1.5LL4RearViton Type
1967LotusSuper Seven1.3LL4RearViton Type
1967TVRVixen1.6LL4RearViton Type
1966ElvaCourier1.5LL4RearViton Type
1966FordAnglia1.2LL4RearViton Type
1966FordCortina1.6LL4RearViton Type
1966LotusElan1.6LL4RearViton Type
1966LotusSeven1.3LL4RearViton Type
1966LotusSuper Seven1.5LL4RearViton Type
1966TurnerSprint1.5LL4RearViton Type
1965DeTomasoVallelunga1.5LL4RearViton Type
1965ElvaCourier1.5LL4RearViton Type
1965FordAnglia1.2LL4RearViton Type
1965FordCortina1.5LL4RearViton Type
1965LotusElan1.6LL4RearViton Type
1965LotusSeven1.5LL4RearViton Type
1965LotusSuper Seven1.3LL4RearViton Type
1965TurnerSprint1.5LL4RearViton Type
1964DeTomasoVallelunga1.5LL4RearViton Type
1964ElvaCourier1.5LL4RearViton Type
1964FordAnglia1.2LL4RearViton Type
1964FordCapri1.5LL4RearViton Type
1964FordConsul1.3LL4RearViton Type
1964FordCortina1.5LL4RearViton Type
1964LotusElan1.6LL4RearViton Type
1964LotusSeven1.5LL4RearViton Type
1964LotusSuper Seven1.3LL4RearViton Type
1964TurnerSprint1.5LL4RearViton Type
1963DeTomasoVallelunga1.5LL4RearViton Type
1963ElvaCourier1.5LL4RearViton Type
1963FordAnglia1.2LL4RearViton Type
1963FordCapri1.3LL4RearViton Type
1963FordConsul1.3LL4RearViton Type
1963FordCortina1.5LL4RearViton Type
1963LotusElan1.6LL4RearViton Type
1963LotusSeven1.3LL4RearViton Type
1963LotusSuper Seven1.3LL4RearViton Type
1962ElvaCourier1.5LL4RearViton Type
1962FordAnglia1.2LL4RearViton Type
1962FordCapri1.3LL4RearViton Type
1962FordConsul1.3LL4RearViton Type
1962LotusElan1.5LL4RearViton Type
1962LotusSeven1.3LL4RearViton Type
1962LotusSuper Seven1.3LL4RearViton Type
1961LotusSeven1.3LL4RearViton Type
1961LotusSuper Seven1.3LL4RearViton Type
1960FordTaunus1.5LL4RearViton Type