Twin Power Inner Primary Seal (5 Pk) — Replaces H-D 12052 — Fits 1984-2016 Big Twin

SKU: TWP043260
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About TwinPower

TwinPower engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full TwinPower lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Twin Power Inner Primary Seal (5 Pack) for Harley-Davidson Big Twin (1984-2016)

Prevent critical oil leaks and contamination with this convenient 5-pack of Inner Primary Seals from Twin Power. Designed as a direct replacement for Harley-Davidson part number 12052, these seals are essential for maintaining the integrity of your Big Twin's primary drive system.

Product Highlights:

  • OEM Replacement: Directly replaces Harley-Davidson part number 12052, ensuring compatibility and proper fit.
  • Durable Material: Manufactured from high-quality, oil-resistant rubber compound to provide a long-lasting, reliable seal.
  • Leak Prevention: Effectively seals the inner primary housing, preventing oil from migrating into the clutch compartment or leaking externally.
  • Convenient 5-Pack: Includes five seals, providing spares for future maintenance or for use on multiple bikes.
  • Broad Fitment: Compatible with a wide range of Harley-Davidson Big Twin models from 1984 through 2016, covering numerous Softail, Touring, and Dyna platforms.

Vehicle Compatibility:

These inner primary seals fit the following Harley-Davidson Big Twin models:

  • Softail Models: Heritage Softail, Fat Boy, Deluxe, Night Train, Springer Softail, etc. (1984-2016)
  • Touring Models: Electra Glide, Road King, Street Glide, Road Glide, etc. (1984-2016)
  • Dyna Models: Wide Glide, Fat Bob, Low Rider, Street Bob, etc. (1984-2016)
  • FXR Models: (1984-1994)

Keep your Harley-Davidson running smoothly and prevent costly repairs. Choose reliable parts from Twin Power. Get your 5-pack of Inner Primary Seals today at GGCRACING!

Vehicle Fitment

Years Make Model Trim
2012-2016 Harley-Davidson FLD Switchback Base
1994-2016 Harley-Davidson FLHR Road King Base
2007-2013 Harley-Davidson FLHRC Road King Classic Base
1998-2006 Harley-Davidson FLHRCI Road King Classic Base
1996-1997 Harley-Davidson FLHRI Road King Base
2000-2006 Harley-Davidson FLHRI Road King Base
2004-2007 Harley-Davidson FLHRS Road King Custom Base
2004-2006 Harley-Davidson FLHRSI Road King Custom Base
1984 Harley-Davidson FLHS Electra Glide Sport Base
1987-1993 Harley-Davidson FLHS Electra Glide Sport Base
1986-2009 Harley-Davidson FLHT Electra Glide Standard Base
1984-2005 Harley-Davidson FLHTC Electra Glide Classic Base
2007-2013 Harley-Davidson FLHTC Electra Glide Classic Base
1996-2006 Harley-Davidson FLHTCI Electra Glide Classic Base
2000-2004 Harley-Davidson FLHTCSE Screamin Eagle Electra Glide Base
1989-1997 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
2007-2016 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1995-2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2009-2013 Harley-Davidson FLHTCUTG Tri Glide Ultra Classic Base
2010-2016 Harley-Davidson FLHTK Ultra Limited Base
2015-2016 Harley-Davidson FLHTKL Ultra Limited Low Base
2014-2016 Harley-Davidson FLHTKSE CVO Limited Base
2006-2016 Harley-Davidson FLHX Street Glide Base
2006 Harley-Davidson FLHXI Street Glide Base
2014-2016 Harley-Davidson FLHXS Street Glide Special Base
2010 Harley-Davidson FLHXSE CVO Street Glide Base
2015-2016 Harley-Davidson FLHXSE CVO Street Glide Base
2010-2011 Harley-Davidson FLHXXX Street Glide Trike Base
2015-2016 Harley-Davidson FLRT Freewheeler Base
2012-2017 Harley-Davidson FLS Softail Slim Base
2016-2017 Harley-Davidson FLSS Softail Slim S Base
1986-1990 Harley-Davidson FLST Heritage Softail Base
2006 Harley-Davidson FLST Heritage Softail Base
1988-2017 Harley-Davidson FLSTC Heritage Softail Classic Base
2001-2006 Harley-Davidson FLSTCI Heritage Softail Classic Base
1990-2017 Harley-Davidson FLSTF Fat Boy Base
2010-2017 Harley-Davidson FLSTFB Fat Boy Lo Base
2016-2017 Harley-Davidson FLSTFBS Fat Boy S Base
2001-2006 Harley-Davidson FLSTFI Fat Boy Base
1993 Harley-Davidson FLSTN Heritage Softail Nostalgia Base
1994-1996 Harley-Davidson FLSTN Heritage Softail Special Base
2008-2011 Harley-Davidson FLSTSB Cross Bones Base
2010 Harley-Davidson FLSTSE CVO Softail Convertible Base
1998-2010 Harley-Davidson FLTR Road Glide Base
2016 Harley-Davidson FLTR Road Glide Base
1998-2006 Harley-Davidson FLTRI Road Glide Base
2011-2013 Harley-Davidson FLTRU Road Glide Ultra Base
2016 Harley-Davidson FLTRU Road Glide Ultra Base
2011 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015-2016 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015-2016 Harley-Davidson FLTRX Road Glide Base
2010-2013 Harley-Davidson FLTRX Road Glide Custom Base
2015-2016 Harley-Davidson FLTRXS Road Glide Special Base
2012 Harley-Davidson FLTRXSE CVO Road Glide Base
2008-2009 Harley-Davidson FXCW Rocker Base
2008-2011 Harley-Davidson FXCWC Rocker C Base
1995-2010 Harley-Davidson FXD Dyna Super Glide Base
2004-2006 Harley-Davidson FXDI Dyna Super Glide Base
1993-2005 Harley-Davidson FXDL Dyna Low Rider Base
2007-2009 Harley-Davidson FXDL Dyna Low Rider Base

…and 30 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About TwinPower

TwinPower engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full TwinPower lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Twin Power Inner Primary Seal (5 Pack) for Harley-Davidson Big Twin (1984-2016)

Prevent critical oil leaks and contamination with this convenient 5-pack of Inner Primary Seals from Twin Power. Designed as a direct replacement for Harley-Davidson part number 12052, these seals are essential for maintaining the integrity of your Big Twin's primary drive system.

Product Highlights:

  • OEM Replacement: Directly replaces Harley-Davidson part number 12052, ensuring compatibility and proper fit.
  • Durable Material: Manufactured from high-quality, oil-resistant rubber compound to provide a long-lasting, reliable seal.
  • Leak Prevention: Effectively seals the inner primary housing, preventing oil from migrating into the clutch compartment or leaking externally.
  • Convenient 5-Pack: Includes five seals, providing spares for future maintenance or for use on multiple bikes.
  • Broad Fitment: Compatible with a wide range of Harley-Davidson Big Twin models from 1984 through 2016, covering numerous Softail, Touring, and Dyna platforms.

Vehicle Compatibility:

These inner primary seals fit the following Harley-Davidson Big Twin models:

  • Softail Models: Heritage Softail, Fat Boy, Deluxe, Night Train, Springer Softail, etc. (1984-2016)
  • Touring Models: Electra Glide, Road King, Street Glide, Road Glide, etc. (1984-2016)
  • Dyna Models: Wide Glide, Fat Bob, Low Rider, Street Bob, etc. (1984-2016)
  • FXR Models: (1984-1994)

Keep your Harley-Davidson running smoothly and prevent costly repairs. Choose reliable parts from Twin Power. Get your 5-pack of Inner Primary Seals today at GGCRACING!

Vehicle Fitment

Years Make Model Trim
2012-2016 Harley-Davidson FLD Switchback Base
1994-2016 Harley-Davidson FLHR Road King Base
2007-2013 Harley-Davidson FLHRC Road King Classic Base
1998-2006 Harley-Davidson FLHRCI Road King Classic Base
1996-1997 Harley-Davidson FLHRI Road King Base
2000-2006 Harley-Davidson FLHRI Road King Base
2004-2007 Harley-Davidson FLHRS Road King Custom Base
2004-2006 Harley-Davidson FLHRSI Road King Custom Base
1984 Harley-Davidson FLHS Electra Glide Sport Base
1987-1993 Harley-Davidson FLHS Electra Glide Sport Base
1986-2009 Harley-Davidson FLHT Electra Glide Standard Base
1984-2005 Harley-Davidson FLHTC Electra Glide Classic Base
2007-2013 Harley-Davidson FLHTC Electra Glide Classic Base
1996-2006 Harley-Davidson FLHTCI Electra Glide Classic Base
2000-2004 Harley-Davidson FLHTCSE Screamin Eagle Electra Glide Base
1989-1997 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
2007-2016 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1995-2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2009-2013 Harley-Davidson FLHTCUTG Tri Glide Ultra Classic Base
2010-2016 Harley-Davidson FLHTK Ultra Limited Base
2015-2016 Harley-Davidson FLHTKL Ultra Limited Low Base
2014-2016 Harley-Davidson FLHTKSE CVO Limited Base
2006-2016 Harley-Davidson FLHX Street Glide Base
2006 Harley-Davidson FLHXI Street Glide Base
2014-2016 Harley-Davidson FLHXS Street Glide Special Base
2010 Harley-Davidson FLHXSE CVO Street Glide Base
2015-2016 Harley-Davidson FLHXSE CVO Street Glide Base
2010-2011 Harley-Davidson FLHXXX Street Glide Trike Base
2015-2016 Harley-Davidson FLRT Freewheeler Base
2012-2017 Harley-Davidson FLS Softail Slim Base
2016-2017 Harley-Davidson FLSS Softail Slim S Base
1986-1990 Harley-Davidson FLST Heritage Softail Base
2006 Harley-Davidson FLST Heritage Softail Base
1988-2017 Harley-Davidson FLSTC Heritage Softail Classic Base
2001-2006 Harley-Davidson FLSTCI Heritage Softail Classic Base
1990-2017 Harley-Davidson FLSTF Fat Boy Base
2010-2017 Harley-Davidson FLSTFB Fat Boy Lo Base
2016-2017 Harley-Davidson FLSTFBS Fat Boy S Base
2001-2006 Harley-Davidson FLSTFI Fat Boy Base
1993 Harley-Davidson FLSTN Heritage Softail Nostalgia Base
1994-1996 Harley-Davidson FLSTN Heritage Softail Special Base
2008-2011 Harley-Davidson FLSTSB Cross Bones Base
2010 Harley-Davidson FLSTSE CVO Softail Convertible Base
1998-2010 Harley-Davidson FLTR Road Glide Base
2016 Harley-Davidson FLTR Road Glide Base
1998-2006 Harley-Davidson FLTRI Road Glide Base
2011-2013 Harley-Davidson FLTRU Road Glide Ultra Base
2016 Harley-Davidson FLTRU Road Glide Ultra Base
2011 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015-2016 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015-2016 Harley-Davidson FLTRX Road Glide Base
2010-2013 Harley-Davidson FLTRX Road Glide Custom Base
2015-2016 Harley-Davidson FLTRXS Road Glide Special Base
2012 Harley-Davidson FLTRXSE CVO Road Glide Base
2008-2009 Harley-Davidson FXCW Rocker Base
2008-2011 Harley-Davidson FXCWC Rocker C Base
1995-2010 Harley-Davidson FXD Dyna Super Glide Base
2004-2006 Harley-Davidson FXDI Dyna Super Glide Base
1993-2005 Harley-Davidson FXDL Dyna Low Rider Base
2007-2009 Harley-Davidson FXDL Dyna Low Rider Base

…and 30 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About TwinPower

TwinPower engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full TwinPower lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Twin Power Inner Primary Seal (5 Pack) for Harley-Davidson Big Twin (1984-2016)

Prevent critical oil leaks and contamination with this convenient 5-pack of Inner Primary Seals from Twin Power. Designed as a direct replacement for Harley-Davidson part number 12052, these seals are essential for maintaining the integrity of your Big Twin's primary drive system.

Product Highlights:

  • OEM Replacement: Directly replaces Harley-Davidson part number 12052, ensuring compatibility and proper fit.
  • Durable Material: Manufactured from high-quality, oil-resistant rubber compound to provide a long-lasting, reliable seal.
  • Leak Prevention: Effectively seals the inner primary housing, preventing oil from migrating into the clutch compartment or leaking externally.
  • Convenient 5-Pack: Includes five seals, providing spares for future maintenance or for use on multiple bikes.
  • Broad Fitment: Compatible with a wide range of Harley-Davidson Big Twin models from 1984 through 2016, covering numerous Softail, Touring, and Dyna platforms.

Vehicle Compatibility:

These inner primary seals fit the following Harley-Davidson Big Twin models:

  • Softail Models: Heritage Softail, Fat Boy, Deluxe, Night Train, Springer Softail, etc. (1984-2016)
  • Touring Models: Electra Glide, Road King, Street Glide, Road Glide, etc. (1984-2016)
  • Dyna Models: Wide Glide, Fat Bob, Low Rider, Street Bob, etc. (1984-2016)
  • FXR Models: (1984-1994)

Keep your Harley-Davidson running smoothly and prevent costly repairs. Choose reliable parts from Twin Power. Get your 5-pack of Inner Primary Seals today at GGCRACING!

Vehicle Fitment

Years Make Model Trim
2012-2016 Harley-Davidson FLD Switchback Base
1994-2016 Harley-Davidson FLHR Road King Base
2007-2013 Harley-Davidson FLHRC Road King Classic Base
1998-2006 Harley-Davidson FLHRCI Road King Classic Base
1996-1997 Harley-Davidson FLHRI Road King Base
2000-2006 Harley-Davidson FLHRI Road King Base
2004-2007 Harley-Davidson FLHRS Road King Custom Base
2004-2006 Harley-Davidson FLHRSI Road King Custom Base
1984 Harley-Davidson FLHS Electra Glide Sport Base
1987-1993 Harley-Davidson FLHS Electra Glide Sport Base
1986-2009 Harley-Davidson FLHT Electra Glide Standard Base
1984-2005 Harley-Davidson FLHTC Electra Glide Classic Base
2007-2013 Harley-Davidson FLHTC Electra Glide Classic Base
1996-2006 Harley-Davidson FLHTCI Electra Glide Classic Base
2000-2004 Harley-Davidson FLHTCSE Screamin Eagle Electra Glide Base
1989-1997 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
2007-2016 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
1995-2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2009-2013 Harley-Davidson FLHTCUTG Tri Glide Ultra Classic Base
2010-2016 Harley-Davidson FLHTK Ultra Limited Base
2015-2016 Harley-Davidson FLHTKL Ultra Limited Low Base
2014-2016 Harley-Davidson FLHTKSE CVO Limited Base
2006-2016 Harley-Davidson FLHX Street Glide Base
2006 Harley-Davidson FLHXI Street Glide Base
2014-2016 Harley-Davidson FLHXS Street Glide Special Base
2010 Harley-Davidson FLHXSE CVO Street Glide Base
2015-2016 Harley-Davidson FLHXSE CVO Street Glide Base
2010-2011 Harley-Davidson FLHXXX Street Glide Trike Base
2015-2016 Harley-Davidson FLRT Freewheeler Base
2012-2017 Harley-Davidson FLS Softail Slim Base
2016-2017 Harley-Davidson FLSS Softail Slim S Base
1986-1990 Harley-Davidson FLST Heritage Softail Base
2006 Harley-Davidson FLST Heritage Softail Base
1988-2017 Harley-Davidson FLSTC Heritage Softail Classic Base
2001-2006 Harley-Davidson FLSTCI Heritage Softail Classic Base
1990-2017 Harley-Davidson FLSTF Fat Boy Base
2010-2017 Harley-Davidson FLSTFB Fat Boy Lo Base
2016-2017 Harley-Davidson FLSTFBS Fat Boy S Base
2001-2006 Harley-Davidson FLSTFI Fat Boy Base
1993 Harley-Davidson FLSTN Heritage Softail Nostalgia Base
1994-1996 Harley-Davidson FLSTN Heritage Softail Special Base
2008-2011 Harley-Davidson FLSTSB Cross Bones Base
2010 Harley-Davidson FLSTSE CVO Softail Convertible Base
1998-2010 Harley-Davidson FLTR Road Glide Base
2016 Harley-Davidson FLTR Road Glide Base
1998-2006 Harley-Davidson FLTRI Road Glide Base
2011-2013 Harley-Davidson FLTRU Road Glide Ultra Base
2016 Harley-Davidson FLTRU Road Glide Ultra Base
2011 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015-2016 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015-2016 Harley-Davidson FLTRX Road Glide Base
2010-2013 Harley-Davidson FLTRX Road Glide Custom Base
2015-2016 Harley-Davidson FLTRXS Road Glide Special Base
2012 Harley-Davidson FLTRXSE CVO Road Glide Base
2008-2009 Harley-Davidson FXCW Rocker Base
2008-2011 Harley-Davidson FXCWC Rocker C Base
1995-2010 Harley-Davidson FXD Dyna Super Glide Base
2004-2006 Harley-Davidson FXDI Dyna Super Glide Base
1993-2005 Harley-Davidson FXDL Dyna Low Rider Base
2007-2009 Harley-Davidson FXDL Dyna Low Rider Base

…and 30 additional fitments. Contact us to confirm yours.

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