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Part #: 18878

SKF 18878 Transfer Case Output Shaft Seal - Front

Front
⚙️ 228 vehicles fit this part
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🚗Fitment: Saturn, Chevrolet, GMC, Cadillac, and Oldsmobile, Vue, Avalanche, Silverado 1500, Silverado 1500 Classic, Silverado 1500 HD Classic, Silverado 2500, Silverado 2500 HD, Silverado 3500 Classic, Silverado 3500 HD, Suburban 1500, Tahoe, Sierra 1500, Sierra 1500 Classic, Sierra 1500 HD Classic, Sierra 2500 HD, Sierra 3500 Classic, Sierra 3500 HD, Yukon, Yukon XL 1500, Escalade, Escalade ESV, Escalade EXT, Avalanche 1500, Silverado 1500 HD, Silverado 3500, Sonora, Sierra 1500 HD, Sierra 3500, Astro, Avalanche 2500, Suburban 2500, Safari, Yukon XL 2500, Sierra 2500, Blazer, S10, Jimmy, Sonoma, Bravada, K1500, and K1500 Suburban
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Not what you need? Click here for all Transfer Case Output Shaft Seal options

Reliable Transfer Case Output Shaft Seal for GM Vehicles

The SKF 18878 Transfer Case Output Shaft Seal is engineered to provide durable sealing performance for a range of General Motors vehicles. Designed with precision dimensions and a polyacrylate sealing surface, this seal helps maintain transfer case integrity and prevent fluid leaks.

  • Width: 0.512 inches for optimal fit and sealing
  • Outside Diameter: 2.677 inches ensuring proper housing compatibility
  • Shaft Diameter: 1.889 inches matching OEM specifications
  • Sealing Surface Type: Polyacrylate for enhanced wear resistance and sealing reliability
  • Compatible with multiple GM makes and models including Chevrolet, GMC, Cadillac, and more

Technical Details and Compatibility

The SKF 18878 transfer case output shaft seal is designed to meet the exacting standards required for transfer case applications in vehicles such as the Chevrolet Silverado 1500, GMC Sierra 2500 HD, Cadillac Escalade, and Saturn Vue. The polyacrylate sealing surface provides a durable barrier against contaminants and fluid leakage, while the precise dimensions ensure a secure fit on shafts with a diameter of 1.889 inches. This seal is suitable for transfer cases in models including the Chevrolet Avalanche 2500, GMC Yukon XL 1500, and Oldsmobile Bravada, among others.

Common Applications and Problem Solving

  • Prevents transfer case fluid leaks that can lead to drivetrain damage
  • Reduces contamination ingress to maintain transfer case performance
  • Addresses wear and tear issues on output shaft seals in GM trucks and SUVs
  • Helps maintain proper lubrication and pressure within the transfer case
  • Replaces worn or damaged seals to restore transfer case reliability

Installation Notes and Tips

When installing the SKF 18878 transfer case output shaft seal, ensure the shaft and housing surfaces are clean and free of debris. Use appropriate tools to press the seal evenly into place without distortion. Verify the seal’s orientation matches OEM specifications, with the polyacrylate sealing surface facing the fluid side. Proper installation helps prevent premature seal failure and fluid leaks.

Quality Assurance and Warranty

SKF is a recognized manufacturer of automotive sealing solutions, and the 18878 transfer case output shaft seal is produced to meet industry standards for durability and performance. While specific warranty details may vary, SKF products typically come with manufacturer-backed quality assurance to support reliable operation in compatible GM vehicles.

This part fits 228 vehicles. Search below:

YearMakeModelPositionNotes
2010SaturnVueFront
2009SaturnVueFront
2008SaturnVueFront
2007ChevroletAvalancheN/ACompatible with various models with a New Process transfer case.
2007ChevroletSilverado 1500N/ACompatible with various models with a New Process transfer case.
2007ChevroletSilverado 1500 ClassicN/ACompatible with various models with a New Process transfer case.
2007ChevroletSilverado 1500 HD ClassicN/ACompatible with various models with a New Process transfer case.
2007ChevroletSilverado 2500N/A
2007ChevroletSilverado 2500 HDN/A
2007ChevroletSilverado 3500 ClassicN/A
2007ChevroletSilverado 3500 HDN/A
2007ChevroletSuburban 1500N/ACompatible with various models with a New Process transfer case.
2007ChevroletTahoeN/ACompatible with various models with a New Process transfer case.
2007GMCSierra 1500N/ACompatible with various models with a New Process transfer case.
2007GMCSierra 1500 ClassicN/ACompatible with various models with a New Process transfer case.
2007GMCSierra 1500 HD ClassicN/ACompatible with various models with a New Process transfer case.
2007GMCSierra 2500 HDN/A
2007GMCSierra 3500 ClassicN/A
2007GMCSierra 3500 HDN/A
2007GMCYukonN/ACompatible with various models with a New Process transfer case.
2007GMCYukon XL 1500N/ACompatible with various models with a New Process transfer case.
2007SaturnVueFront
2006CadillacEscaladeN/ANew Process 149:
2006CadillacEscalade ESVN/ANew Process 149:
2006CadillacEscalade EXTN/ANew Process 149:
2006ChevroletAvalanche 1500N/ACompatible with various models with a New Process transfer case.
2006ChevroletSilverado 1500N/ACompatible with various models with a New Process transfer case.
2006ChevroletSilverado 1500 HDN/ACompatible with various models with a New Process transfer case.
2006ChevroletSilverado 2500N/A
2006ChevroletSilverado 2500 HDN/A
2006ChevroletSilverado 3500N/A
2006ChevroletSuburban 1500N/ACompatible with various models with a New Process transfer case.
2006ChevroletTahoeN/ACompatible with various models with a New Process transfer case.
2006GMCSierra 1500N/ACompatible with various models with a New Process transfer case.
2006GMCSierra 1500 HDN/ACompatible with various models with a New Process transfer case.
2006GMCSierra 2500 HDN/A
2006GMCSierra 3500N/A
2006GMCYukonN/ACompatible with various models with a New Process transfer case.
2006GMCYukon XL 1500N/ACompatible with various models with a New Process transfer case.
2006SaturnVueFront
2005CadillacEscaladeN/ANew Process 149:
2005CadillacEscalade ESVN/ANew Process 149:
2005CadillacEscalade EXTN/ANew Process 149:
2005ChevroletAstroN/A
2005ChevroletAvalanche 1500N/ACompatible with various models with a New Process transfer case.
2005ChevroletAvalanche 2500N/A
2005ChevroletSilverado 1500N/ACompatible with various models with a New Process transfer case.
2005ChevroletSilverado 1500 HDN/ACompatible with various models with a New Process transfer case.
2005ChevroletSilverado 2500N/A
2005ChevroletSilverado 2500 HDN/A
2005ChevroletSilverado 3500N/A
2005ChevroletSuburban 1500N/ACompatible with various models with a New Process transfer case.
2005ChevroletSuburban 2500N/A
2005GMCSafariN/A
2005GMCSierra 1500N/ACompatible with various models with a New Process transfer case.
2005GMCSierra 1500 HDN/ACompatible with various models with a New Process transfer case.
2005GMCSierra 2500 HDN/A
2005GMCSierra 3500N/A
2005GMCYukon XL 1500N/ACompatible with various models with a New Process transfer case.
2005GMCYukon XL 2500N/A
2005SaturnVueFront
2004CadillacEscaladeN/ANew Process 149:
2004CadillacEscalade ESVN/ANew Process 149:
2004CadillacEscalade EXTN/ANew Process 149:
2004ChevroletAstroN/A
2004ChevroletAvalanche 1500N/ACompatible with various models with a New Process transfer case.
2004ChevroletAvalanche 2500N/A
2004ChevroletSilverado 1500N/ACompatible with various models with a New Process transfer case.
2004ChevroletSilverado 2500N/A
2004ChevroletSilverado 2500 HDN/A
2004ChevroletSilverado 3500N/A
2004ChevroletSuburban 1500N/ACompatible with various models with a New Process transfer case.
2004ChevroletSuburban 2500N/A
2004ChevroletTahoeN/ACompatible with various models with a New Process transfer case.
2004GMCSafariN/A
2004GMCSierra 1500N/ACompatible with various models with a New Process transfer case.
2004GMCSierra 2500N/A
2004GMCSierra 2500 HDN/A
2004GMCSierra 3500N/A
2004GMCYukonN/ACompatible with various models with a New Process transfer case.
2004GMCYukon XL 1500N/ACompatible with various models with a New Process transfer case.
2004GMCYukon XL 2500N/A
2004SaturnVueFront
2003CadillacEscaladeN/ANew Process 149:
2003CadillacEscaladeN/ANew Process 246:
2003CadillacEscaladeN/ANew Process 261 & 263
2003CadillacEscalade ESVN/ANew Process 149:
2003CadillacEscalade ESVN/ANew Process 246:
2003CadillacEscalade ESVN/ANew Process 261 & 263
2003CadillacEscalade EXTN/ANew Process 149:
2003CadillacEscalade EXTN/ANew Process 246:
2003CadillacEscalade EXTN/ANew Process 261 & 263
2003ChevroletAstroN/A
2003ChevroletAvalanche 1500N/ACompatible with various models with a New Process transfer case.
2003ChevroletAvalanche 2500N/A
2003ChevroletBlazerN/Aw/ Active 2 Spd. Transfer Case
2003ChevroletS10N/Aw/ Active 2 Spd. Transfer Case
2003ChevroletSilverado 1500N/ACompatible with various models with a New Process transfer case.
2003ChevroletSilverado 1500 HDN/ACompatible with various models with a New Process transfer case.
2003ChevroletSilverado 2500N/A
2003ChevroletSilverado 2500 HDN/A
2003ChevroletSilverado 3500N/A
2003ChevroletSuburban 1500N/ACompatible with various models with a New Process transfer case.
2003ChevroletSuburban 2500N/A
2003ChevroletTahoeN/ACompatible with various models with a New Process transfer case.
2003GMCJimmyN/Aw/ Active 2 Spd. Transfer Case
2003GMCSafariN/A
2003GMCSierra 1500N/ACompatible with various models with a New Process transfer case.
2003GMCSierra 1500 HDN/ACompatible with various models with a New Process transfer case.
2003GMCSierra 2500N/A
2003GMCSierra 2500 HDN/A
2003GMCSierra 3500N/A
2003GMCSonomaN/Aw/ Active 2 Spd. Transfer Case
2003GMCYukonN/ACompatible with various models with a New Process transfer case.
2003GMCYukon XL 1500N/ACompatible with various models with a New Process transfer case.
2003GMCYukon XL 2500N/A
2003SaturnVueFront
2002CadillacEscaladeN/ANew Process 149:
2002CadillacEscaladeN/ANew Process 246:
2002CadillacEscaladeN/ANew Process 261 & 263
2002CadillacEscalade EXTN/ANew Process 149:
2002CadillacEscalade EXTN/ANew Process 246:
2002CadillacEscalade EXTN/ANew Process 261 & 263
2002ChevroletAstroN/A
2002ChevroletAvalanche 1500N/ACompatible with various models with a New Process transfer case.
2002ChevroletAvalanche 2500N/A
2002ChevroletBlazerN/Aw/ Active 2 Spd. Transfer Case
2002ChevroletS10N/Aw/ Active 2 Spd. Transfer Case
2002ChevroletSilverado 1500N/ACompatible with various models with a New Process transfer case.
2002ChevroletSilverado 1500 HDN/ACompatible with various models with a New Process transfer case.
2002ChevroletSilverado 2500N/A
2002ChevroletSilverado 2500 HDN/A
2002ChevroletSilverado 3500N/A
2002ChevroletSuburban 1500N/ACompatible with various models with a New Process transfer case.
2002ChevroletSuburban 2500N/A
2002ChevroletTahoeN/ACompatible with various models with a New Process transfer case.
2002GMCJimmyN/Aw/ Active 2 Spd. Transfer Case
2002GMCSafariN/A
2002GMCSierra 1500N/ACompatible with various models with a New Process transfer case.
2002GMCSierra 1500 HDN/ACompatible with various models with a New Process transfer case.
2002GMCSierra 2500N/A
2002GMCSierra 2500 HDN/A
2002GMCSierra 3500N/A
2002GMCSonomaN/Aw/ Active 2 Spd. Transfer Case
2002GMCYukonN/ACompatible with various models with a New Process transfer case.
2002GMCYukon XL 1500N/ACompatible with various models with a New Process transfer case.
2002GMCYukon XL 2500N/A
2002SaturnVueFront
2001ChevroletAstroN/A
2001ChevroletBlazerN/Aw/ Active 2 Spd. Transfer Case
2001ChevroletS10N/Aw/ Active 2 Spd. Transfer Case
2001ChevroletSilverado 1500N/ACompatible with various models with a New Process transfer case.
2001ChevroletSilverado 1500 HDN/ACompatible with various models with a New Process transfer case.
2001ChevroletSilverado 2500N/A
2001ChevroletSilverado 2500 HDN/A
2001ChevroletSilverado 3500N/A
2001ChevroletSuburban 1500N/ACompatible with various models with a New Process transfer case.
2001ChevroletSuburban 2500N/A
2001ChevroletTahoeN/ACompatible with various models with a New Process transfer case.
2001GMCJimmyN/Aw/ Active 2 Spd. Transfer Case
2001GMCSafariN/A
2001GMCSierra 1500N/ACompatible with various models with a New Process transfer case.
2001GMCSierra 1500 HDN/ACompatible with various models with a New Process transfer case.
2001GMCSierra 2500N/A
2001GMCSierra 2500 HDN/A
2001GMCSierra 3500N/A
2001GMCSonomaN/Aw/ Active 2 Spd. Transfer Case
2001GMCYukonN/ACompatible with various models with a New Process transfer case.
2001GMCYukon XL 1500N/ACompatible with various models with a New Process transfer case.
2001GMCYukon XL 2500N/A
2001OldsmobileBravadaN/A
2000CadillacEscaladeN/ANew Process 246:
2000ChevroletAstroN/A
2000ChevroletBlazerN/Aw/ Active 2 Spd. Transfer Case
2000ChevroletS10N/Aw/ Active 2 Spd. Transfer Case
2000ChevroletSilverado 1500N/A
2000ChevroletSilverado 2500N/A
2000ChevroletSuburban 1500N/ANew Process 133 , 241 & 243; 244
2000ChevroletSuburban 2500N/A
2000ChevroletTahoeN/ANew Process 133 , 241 & 243; 244
2000GMCJimmyN/Aw/ Active 2 Spd. Transfer Case
2000GMCSafariN/A
2000GMCSierra 1500N/A
2000GMCSierra 2500N/A
2000GMCSonomaN/Aw/ Active 2 Spd. Transfer Case
2000GMCYukonN/ANew Process 133 , 241 & 243; 244
2000GMCYukon XL 1500N/ANew Process 133 , 241 & 243; 244
2000GMCYukon XL 2500N/A
2000OldsmobileBravadaN/A
1999CadillacEscaladeN/ANew Process 246:
1999ChevroletAstroN/A
1999ChevroletBlazerN/Aw/ Active 2 Spd. Transfer Case
1999ChevroletK1500N/ANew Process 133 , 241 & 243; 244
1999ChevroletK1500 SuburbanN/ANew Process 133 , 241 & 243; 244
1999ChevroletS10N/Aw/ Active 2 Spd. Transfer Case
1999ChevroletSilverado 1500N/A
1999ChevroletSilverado 2500N/A
1999ChevroletTahoeN/ANew Process 133 , 241 & 243; 244
1999GMCJimmyN/Aw/ Active 2 Spd. Transfer Case
1999GMCK1500N/ANew Process 133 , 241 & 243; 244
1999GMCK1500 SuburbanN/ANew Process 133 , 241 & 243; 244
1999GMCSafariN/A
1999GMCSierra 1500N/A
1999GMCSierra 2500N/A
1999GMCSonomaN/Aw/ Active 2 Spd. Transfer Case
1999GMCYukonN/ANew Process 133 , 241 & 243; 244
1999OldsmobileBravadaN/A
1998ChevroletBlazerN/Aw/ Active 2 Spd. Transfer Case
1998ChevroletK1500N/ANew Process 133 , 241 & 243; 244
1998ChevroletK1500 SuburbanN/ANew Process 133 , 241 & 243; 244
1998ChevroletS10N/Aw/ Active 2 Spd. Transfer Case
1998ChevroletTahoeN/ANew Process 133 , 241 & 243; 244
1998GMCJimmyN/Aw/ Active 2 Spd. Transfer Case
1998GMCK1500N/ANew Process 133 , 241 & 243; 244
1998GMCK1500 SuburbanN/ANew Process 133 , 241 & 243; 244
1998GMCSonomaN/Aw/ Active 2 Spd. Transfer Case
1998GMCYukonN/ANew Process 133 , 241 & 243; 244
1998OldsmobileBravadaN/A
1997ChevroletBlazerN/Aw/ Active 2 Spd. Transfer Case
1997ChevroletK1500N/ANew Process 133 , 241 & 243; 244
1997ChevroletK1500 SuburbanN/ANew Process 133 , 241 & 243; 244
1997ChevroletS10N/Aw/ Active 2 Spd. Transfer Case
1997ChevroletTahoeN/ANew Process 133 , 241 & 243; 244
1997GMCJimmyN/Aw/ Active 2 Spd. Transfer Case
1997GMCK1500N/ANew Process 133 , 241 & 243; 244
1997GMCK1500 SuburbanN/ANew Process 133 , 241 & 243; 244
1997GMCSonomaN/Aw/ Active 2 Spd. Transfer Case
1997GMCYukonN/ANew Process 133 , 241 & 243; 244

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

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.