Twin Power Transmission Main Drive Gear Seal for Harley Big Twin 2007-2015 & Dyna 2006 — Replaces H-D 12074

SKU: TWP043286
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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.

Twin Power Transmission Main Drive Gear Seal for Harley-Davidson

Ensure the proper functioning and longevity of your Harley-Davidson transmission with this high-quality main drive gear seal from Twin Power. This seal is specifically designed for 2007-2015 Big Twin models and 2006 Dyna models, serving as a direct replacement for Harley-Davidson part number 12074. It plays a critical role in preventing lubricant leakage and protecting the transmission from contaminants.

Product Features:

  • OE Replacement: Directly replaces Harley-Davidson part # 12074, guaranteeing a precise fit and function.
  • Model Compatibility: Engineered for 2007-2015 Harley-Davidson Big Twin motorcycles (including FLHR, FLHRC, FLHT, FLHTC, FLHTCU, FLHX, FLSTC, etc.) and 2006 Dyna models.
  • Durable Construction: Made from robust materials designed to withstand the rigors of transmission operation, including heat and friction.
  • Leak Prevention: Effectively seals the main drive gear shaft, preventing transmission fluid from escaping and keeping debris out.
  • Essential Maintenance Part: A vital component for maintaining the health of your transmission during regular service or repairs.

The main drive gear seal is a small but critical part that ensures your transmission operates efficiently and without leaks. A failing seal can lead to low lubricant levels, increased wear on internal components, and potential transmission failure. This Twin Power seal provides the reliability needed to keep your Harley-Davidson running smoothly.

Invest in the quality and durability of Twin Power parts for your motorcycle maintenance. Keep your transmission protected and performing at its best. Find this essential seal and other quality parts at GGCRACING!

Vehicle Fitment

Years Make Model Trim
2006-2015 Harley-Davidson FLHR Road King Base
2007-2015 Harley-Davidson FLHRC Road King Classic Base
2006 Harley-Davidson FLHRCI Road King Classic Base
2006-2007 Harley-Davidson FLHRS Road King Custom Base
2006-2009 Harley-Davidson FLHT Electra Glide Standard Base
2007-2013 Harley-Davidson FLHTC Electra Glide Classic Base
2006 Harley-Davidson FLHTCI Electra Glide Classic Base
2007-2015 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2015 Harley-Davidson FLHTCUL Electra Glide Ultra Classic Low Base
2009-2013 Harley-Davidson FLHTCUTG Tri Glide Ultra Classic Base
2015 Harley-Davidson FLHTKL Ultra Limited Low Base
2014-2015 Harley-Davidson FLHTKSE CVO Limited Base
2006-2015 Harley-Davidson FLHX Street Glide Base
2014-2015 Harley-Davidson FLHXS Street Glide Special Base
2010-2012 Harley-Davidson FLHXSE CVO Street Glide Base
2015 Harley-Davidson FLHXSE CVO Street Glide Base
2010-2011 Harley-Davidson FLHXXX Street Glide Trike Base
2015 Harley-Davidson FLRT Freewheeler Base
2006 Harley-Davidson FLST Heritage Softail Base
2006-2015 Harley-Davidson FLSTC Heritage Softail Classic Base
2006-2015 Harley-Davidson FLSTF Fat Boy Base
2010-2015 Harley-Davidson FLSTFB Fat Boy Lo Base
2006-2015 Harley-Davidson FLSTN Softail Deluxe Base
2014-2015 Harley-Davidson FLSTNSE CVO Softail Deluxe Base
2008-2011 Harley-Davidson FLSTSB Cross Bones Base
2006-2007 Harley-Davidson FLSTSC Softail Springer Classic Base
2010-2012 Harley-Davidson FLSTSE CVO Softail Convertible Base
2006-2013 Harley-Davidson FLTR Road Glide Base
2015 Harley-Davidson FLTR Road Glide Base
2006 Harley-Davidson FLTRI Road Glide Base
2009-2015 Harley-Davidson FLTRSE3 CVO Road Glide Base
2011-2015 Harley-Davidson FLTRU Road Glide Ultra Base
2011 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015 Harley-Davidson FLTRX Road Glide Base
2010-2013 Harley-Davidson FLTRX Road Glide Custom Base
2015 Harley-Davidson FLTRXS Road Glide Special Base
2012 Harley-Davidson FLTRXSE CVO Road Glide Custom Base
2006-2013 Harley-Davidson FXD Dyna Super Glide Base
2007-2015 Harley-Davidson FXDB Street Bob Base
2006 Harley-Davidson FXDBI Street Bob Base
2006 Harley-Davidson FXDCI Super Glide Custom Base
2008-2015 Harley-Davidson FXDF Fat Bob Base
2009-2010 Harley-Davidson FXDFSE CVO Dyna Fat Bob Base
2006 Harley-Davidson FXDI Dyna Super Glide Base
2007-2015 Harley-Davidson FXDL Dyna Low Rider Base
2006 Harley-Davidson FXDLI Dyna Low Rider Base
2006-2015 Harley-Davidson FXDWG Dyna Wide Glide Base
2006 Harley-Davidson FXDWGI Dyna Wide Glide Base
2006-2009 Harley-Davidson FXSTB Night Train Base
2007-2010 Harley-Davidson FXSTC Softail Custom Base
2006-2007 Harley-Davidson FXSTD Softail Deuce Base
2006 Harley-Davidson FXSTS Springer Softail Base

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.

Twin Power Transmission Main Drive Gear Seal for Harley-Davidson

Ensure the proper functioning and longevity of your Harley-Davidson transmission with this high-quality main drive gear seal from Twin Power. This seal is specifically designed for 2007-2015 Big Twin models and 2006 Dyna models, serving as a direct replacement for Harley-Davidson part number 12074. It plays a critical role in preventing lubricant leakage and protecting the transmission from contaminants.

Product Features:

  • OE Replacement: Directly replaces Harley-Davidson part # 12074, guaranteeing a precise fit and function.
  • Model Compatibility: Engineered for 2007-2015 Harley-Davidson Big Twin motorcycles (including FLHR, FLHRC, FLHT, FLHTC, FLHTCU, FLHX, FLSTC, etc.) and 2006 Dyna models.
  • Durable Construction: Made from robust materials designed to withstand the rigors of transmission operation, including heat and friction.
  • Leak Prevention: Effectively seals the main drive gear shaft, preventing transmission fluid from escaping and keeping debris out.
  • Essential Maintenance Part: A vital component for maintaining the health of your transmission during regular service or repairs.

The main drive gear seal is a small but critical part that ensures your transmission operates efficiently and without leaks. A failing seal can lead to low lubricant levels, increased wear on internal components, and potential transmission failure. This Twin Power seal provides the reliability needed to keep your Harley-Davidson running smoothly.

Invest in the quality and durability of Twin Power parts for your motorcycle maintenance. Keep your transmission protected and performing at its best. Find this essential seal and other quality parts at GGCRACING!

Vehicle Fitment

Years Make Model Trim
2006-2015 Harley-Davidson FLHR Road King Base
2007-2015 Harley-Davidson FLHRC Road King Classic Base
2006 Harley-Davidson FLHRCI Road King Classic Base
2006-2007 Harley-Davidson FLHRS Road King Custom Base
2006-2009 Harley-Davidson FLHT Electra Glide Standard Base
2007-2013 Harley-Davidson FLHTC Electra Glide Classic Base
2006 Harley-Davidson FLHTCI Electra Glide Classic Base
2007-2015 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2015 Harley-Davidson FLHTCUL Electra Glide Ultra Classic Low Base
2009-2013 Harley-Davidson FLHTCUTG Tri Glide Ultra Classic Base
2015 Harley-Davidson FLHTKL Ultra Limited Low Base
2014-2015 Harley-Davidson FLHTKSE CVO Limited Base
2006-2015 Harley-Davidson FLHX Street Glide Base
2014-2015 Harley-Davidson FLHXS Street Glide Special Base
2010-2012 Harley-Davidson FLHXSE CVO Street Glide Base
2015 Harley-Davidson FLHXSE CVO Street Glide Base
2010-2011 Harley-Davidson FLHXXX Street Glide Trike Base
2015 Harley-Davidson FLRT Freewheeler Base
2006 Harley-Davidson FLST Heritage Softail Base
2006-2015 Harley-Davidson FLSTC Heritage Softail Classic Base
2006-2015 Harley-Davidson FLSTF Fat Boy Base
2010-2015 Harley-Davidson FLSTFB Fat Boy Lo Base
2006-2015 Harley-Davidson FLSTN Softail Deluxe Base
2014-2015 Harley-Davidson FLSTNSE CVO Softail Deluxe Base
2008-2011 Harley-Davidson FLSTSB Cross Bones Base
2006-2007 Harley-Davidson FLSTSC Softail Springer Classic Base
2010-2012 Harley-Davidson FLSTSE CVO Softail Convertible Base
2006-2013 Harley-Davidson FLTR Road Glide Base
2015 Harley-Davidson FLTR Road Glide Base
2006 Harley-Davidson FLTRI Road Glide Base
2009-2015 Harley-Davidson FLTRSE3 CVO Road Glide Base
2011-2015 Harley-Davidson FLTRU Road Glide Ultra Base
2011 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015 Harley-Davidson FLTRX Road Glide Base
2010-2013 Harley-Davidson FLTRX Road Glide Custom Base
2015 Harley-Davidson FLTRXS Road Glide Special Base
2012 Harley-Davidson FLTRXSE CVO Road Glide Custom Base
2006-2013 Harley-Davidson FXD Dyna Super Glide Base
2007-2015 Harley-Davidson FXDB Street Bob Base
2006 Harley-Davidson FXDBI Street Bob Base
2006 Harley-Davidson FXDCI Super Glide Custom Base
2008-2015 Harley-Davidson FXDF Fat Bob Base
2009-2010 Harley-Davidson FXDFSE CVO Dyna Fat Bob Base
2006 Harley-Davidson FXDI Dyna Super Glide Base
2007-2015 Harley-Davidson FXDL Dyna Low Rider Base
2006 Harley-Davidson FXDLI Dyna Low Rider Base
2006-2015 Harley-Davidson FXDWG Dyna Wide Glide Base
2006 Harley-Davidson FXDWGI Dyna Wide Glide Base
2006-2009 Harley-Davidson FXSTB Night Train Base
2007-2010 Harley-Davidson FXSTC Softail Custom Base
2006-2007 Harley-Davidson FXSTD Softail Deuce Base
2006 Harley-Davidson FXSTS Springer Softail Base

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.

Twin Power Transmission Main Drive Gear Seal for Harley-Davidson

Ensure the proper functioning and longevity of your Harley-Davidson transmission with this high-quality main drive gear seal from Twin Power. This seal is specifically designed for 2007-2015 Big Twin models and 2006 Dyna models, serving as a direct replacement for Harley-Davidson part number 12074. It plays a critical role in preventing lubricant leakage and protecting the transmission from contaminants.

Product Features:

  • OE Replacement: Directly replaces Harley-Davidson part # 12074, guaranteeing a precise fit and function.
  • Model Compatibility: Engineered for 2007-2015 Harley-Davidson Big Twin motorcycles (including FLHR, FLHRC, FLHT, FLHTC, FLHTCU, FLHX, FLSTC, etc.) and 2006 Dyna models.
  • Durable Construction: Made from robust materials designed to withstand the rigors of transmission operation, including heat and friction.
  • Leak Prevention: Effectively seals the main drive gear shaft, preventing transmission fluid from escaping and keeping debris out.
  • Essential Maintenance Part: A vital component for maintaining the health of your transmission during regular service or repairs.

The main drive gear seal is a small but critical part that ensures your transmission operates efficiently and without leaks. A failing seal can lead to low lubricant levels, increased wear on internal components, and potential transmission failure. This Twin Power seal provides the reliability needed to keep your Harley-Davidson running smoothly.

Invest in the quality and durability of Twin Power parts for your motorcycle maintenance. Keep your transmission protected and performing at its best. Find this essential seal and other quality parts at GGCRACING!

Vehicle Fitment

Years Make Model Trim
2006-2015 Harley-Davidson FLHR Road King Base
2007-2015 Harley-Davidson FLHRC Road King Classic Base
2006 Harley-Davidson FLHRCI Road King Classic Base
2006-2007 Harley-Davidson FLHRS Road King Custom Base
2006-2009 Harley-Davidson FLHT Electra Glide Standard Base
2007-2013 Harley-Davidson FLHTC Electra Glide Classic Base
2006 Harley-Davidson FLHTCI Electra Glide Classic Base
2007-2015 Harley-Davidson FLHTCU Electra Glide Ultra Classic Base
2006 Harley-Davidson FLHTCUI Electra Glide Ultra Classic Base
2015 Harley-Davidson FLHTCUL Electra Glide Ultra Classic Low Base
2009-2013 Harley-Davidson FLHTCUTG Tri Glide Ultra Classic Base
2015 Harley-Davidson FLHTKL Ultra Limited Low Base
2014-2015 Harley-Davidson FLHTKSE CVO Limited Base
2006-2015 Harley-Davidson FLHX Street Glide Base
2014-2015 Harley-Davidson FLHXS Street Glide Special Base
2010-2012 Harley-Davidson FLHXSE CVO Street Glide Base
2015 Harley-Davidson FLHXSE CVO Street Glide Base
2010-2011 Harley-Davidson FLHXXX Street Glide Trike Base
2015 Harley-Davidson FLRT Freewheeler Base
2006 Harley-Davidson FLST Heritage Softail Base
2006-2015 Harley-Davidson FLSTC Heritage Softail Classic Base
2006-2015 Harley-Davidson FLSTF Fat Boy Base
2010-2015 Harley-Davidson FLSTFB Fat Boy Lo Base
2006-2015 Harley-Davidson FLSTN Softail Deluxe Base
2014-2015 Harley-Davidson FLSTNSE CVO Softail Deluxe Base
2008-2011 Harley-Davidson FLSTSB Cross Bones Base
2006-2007 Harley-Davidson FLSTSC Softail Springer Classic Base
2010-2012 Harley-Davidson FLSTSE CVO Softail Convertible Base
2006-2013 Harley-Davidson FLTR Road Glide Base
2015 Harley-Davidson FLTR Road Glide Base
2006 Harley-Davidson FLTRI Road Glide Base
2009-2015 Harley-Davidson FLTRSE3 CVO Road Glide Base
2011-2015 Harley-Davidson FLTRU Road Glide Ultra Base
2011 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015 Harley-Davidson FLTRUSE CVO Road Glide Ultra Base
2015 Harley-Davidson FLTRX Road Glide Base
2010-2013 Harley-Davidson FLTRX Road Glide Custom Base
2015 Harley-Davidson FLTRXS Road Glide Special Base
2012 Harley-Davidson FLTRXSE CVO Road Glide Custom Base
2006-2013 Harley-Davidson FXD Dyna Super Glide Base
2007-2015 Harley-Davidson FXDB Street Bob Base
2006 Harley-Davidson FXDBI Street Bob Base
2006 Harley-Davidson FXDCI Super Glide Custom Base
2008-2015 Harley-Davidson FXDF Fat Bob Base
2009-2010 Harley-Davidson FXDFSE CVO Dyna Fat Bob Base
2006 Harley-Davidson FXDI Dyna Super Glide Base
2007-2015 Harley-Davidson FXDL Dyna Low Rider Base
2006 Harley-Davidson FXDLI Dyna Low Rider Base
2006-2015 Harley-Davidson FXDWG Dyna Wide Glide Base
2006 Harley-Davidson FXDWGI Dyna Wide Glide Base
2006-2009 Harley-Davidson FXSTB Night Train Base
2007-2010 Harley-Davidson FXSTC Softail Custom Base
2006-2007 Harley-Davidson FXSTD Softail Deuce Base
2006 Harley-Davidson FXSTS Springer Softail Base

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