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The Cometic C9631 Support Plate Plug O-Ring Set is designed for Harley-Davidson Twin Cam engines requiring a reliable seal at the support plate plug. This 10-piece set helps replace worn, damaged, or hardened original-equipment O-rings during engine service, supporting proper sealing and dependable performance. The manufacturer part number is C9631, and the vendor part number is also C9631.
Cometic develops gasket and sealing components using updated materials, manufacturing processes, and designs intended to meet the demands of today’s high-performance V-Twin engines. Each O-ring is produced to provide a precise fit for the specified application, helping reduce the risk of leaks and supporting consistent engine operation when installed according to the manufacturer’s service procedures.
Fitment includes 1999–2006 Harley-Davidson FLHR Road King models and 1999–2000 Harley-Davidson FLHTC Electra Glide Classic models. Verify the motorcycle model, engine configuration, and original-equipment reference before installation to confirm compatibility. The set includes 10 support plate plug O-rings and is suitable for repair, rebuild, and routine maintenance applications.
Features:
- Brand: Cometic
- Manufacturer Part Number: C9631
- Vendor Part Number: C9631
- Application: Twin Cam support plate plug O-ring
- Quantity: 10 O-rings per package
- Fitment: 1999–2006 Harley-Davidson FLHR Road King
- Fitment: 1999–2000 Harley-Davidson FLHTC Electra Glide Classic
- Sealing Solution: Designed to help provide a reliable seal for specified Harley-Davidson V-Twin applications
- Engineering: Produced using updated gasket materials, manufacturing processes, and designs
Fitment:
1999 Harley Davidson FLHR Road King
1999 Harley Davidson FLHRC Road King Classic
1999 Harley Davidson FLHT Electra Glide
1999 Harley Davidson FLHTC Electra Glide Classic
1999 Harley Davidson FLHTCU Electra Glide Ultra Classic
1999 Harley Davidson FXD Dyna Super Glide
1999 Harley Davidson FXDL Dyna Low Rider
1999 Harley Davidson FXDS-Conv Dyna Convertible
1999 Harley Davidson FXDWG Dyna Wide Glide
1999 Harley Davidson FXDX Dyna Super Glide Sport
2000 Harley Davidson FLHR Road King
2000 Harley Davidson FLHRC Road King Classic
2000 Harley Davidson FLHT Electra Glide
2000 Harley Davidson FLHTC Electra Glide Classic
2000 Harley Davidson FLHTCU Electra Glide Ultra Classic
2000 Harley Davidson FLSTC Softail Heritage Classic
2000 Harley Davidson FLSTF Softail Fat Boy
2000 Harley Davidson FLSTS Softail Heritage Springer
2000 Harley Davidson FLTR Road Glide
2000 Harley Davidson FXD Dyna Super Glide
2000 Harley Davidson FXDL Dyna Low Rider
2000 Harley Davidson FXDS-Conv Dyna Convertible
2000 Harley Davidson FXDWG Dyna Wide Glide
2000 Harley Davidson FXDX Dyna Super Glide Sport
2000 Harley Davidson FXST Softail
2000 Harley Davidson FXSTB Softail Night Train
2000 Harley Davidson FXSTD Softail Deuce
2000 Harley Davidson FXSTS Softail Springer
2001 Harley Davidson FLHR Road King
2001 Harley Davidson FLHRC Road King Classic
2001 Harley Davidson FLHT Electra Glide
2001 Harley Davidson FLHTC Electra Glide Classic
2001 Harley Davidson FLHTCU Electra Glide Ultra Classic
2001 Harley Davidson FLSTC Softail Heritage Classic
2001 Harley Davidson FLSTF Softail Fat Boy
2001 Harley Davidson FLSTS Softail Heritage Springer
2001 Harley Davidson FLTR Road Glide
2001 Harley Davidson FXD Dyna Super Glide
2001 Harley Davidson FXDL Dyna Low Rider
2001 Harley Davidson FXDWG Dyna Wide Glide
2001 Harley Davidson FXDX Dyna Super Glide Sport
2001 Harley Davidson FXDXT Dyna Super Glide T-Sport
2001 Harley Davidson FXST Softail
2001 Harley Davidson FXSTB Softail Night Train
2001 Harley Davidson FXSTD Softail Deuce
2001 Harley Davidson FXSTS Softail Springer
2002 Harley Davidson FLHR Road King
2002 Harley Davidson FLHRC Road King Classic
2002 Harley Davidson FLHT Electra Glide
2002 Harley Davidson FLHTC Electra Glide Classic
2002 Harley Davidson FLHTCU Electra Glide Ultra Classic
2002 Harley Davidson FLSTC Softail Heritage Classic
2002 Harley Davidson FLSTF Softail Fat Boy
2002 Harley Davidson FLSTS Softail Heritage Springer
2002 Harley Davidson FLTR Road Glide
2002 Harley Davidson FXD Dyna Super Glide
2002 Harley Davidson FXDL Dyna Low Rider
2002 Harley Davidson FXDWG Dyna Wide Glide
2002 Harley Davidson FXDX Dyna Super Glide Sport
2002 Harley Davidson FXDXT Dyna Super Glide T-Sport
2002 Harley Davidson FXST Softail
2002 Harley Davidson FXSTB Softail Night Train
2002 Harley Davidson FXSTD Softail Deuce
2002 Harley Davidson FXSTS Softail Springer
2003 Harley Davidson FLHR Road King
2003 Harley Davidson FLHRC Road King Classic
2003 Harley Davidson FLHT Electra Glide
2003 Harley Davidson FLHTC Electra Glide Classic
2003 Harley Davidson FLHTCU Electra Glide Ultra Classic
2003 Harley Davidson FLSTC Softail Heritage Classic
2003 Harley Davidson FLSTF Softail Fat Boy
2003 Harley Davidson FLSTS Softail Heritage Springer
2003 Harley Davidson FLTR Road Glide
2003 Harley Davidson FXD Dyna Super Glide
2003 Harley Davidson FXDL Dyna Low Rider
2003 Harley Davidson FXDWG Dyna Wide Glide
2003 Harley Davidson FXDX Dyna Super Glide Sport
2003 Harley Davidson FXDXT Dyna Super Glide T-Sport
2003 Harley Davidson FXST Softail
2003 Harley Davidson FXSTB Softail Night Train
2003 Harley Davidson FXSTD Softail Deuce
2003 Harley Davidson FXSTS Softail Springer
2004 Harley Davidson FLHR Road King
2004 Harley Davidson FLHRC Road King Classic
2004 Harley Davidson FLHRS Road King Custom
2004 Harley Davidson FLHT Electra Glide
2004 Harley Davidson FLHTC Electra Glide Classic
2004 Harley Davidson FLHTCU Electra Glide Ultra Classic
2004 Harley Davidson FLSTC Softail Heritage Classic
2004 Harley Davidson FLSTF Softail Fat Boy
2004 Harley Davidson FLTR Road Glide
2004 Harley Davidson FXD Dyna Super Glide
2004 Harley Davidson FXDL Dyna Low Rider
2004 Harley Davidson FXDWG Dyna Wide Glide
2004 Harley Davidson FXDX Dyna Super Glide Sport
2004 Harley Davidson FXST Softail
2004 Harley Davidson FXSTB Softail Night Train
2004 Harley Davidson FXSTD Softail Deuce
2004 Harley Davidson FXSTS Softail Springer
2005 Harley Davidson FLHR Road King
2005 Harley Davidson FLHRC Road King Classic
2005 Harley Davidson FLHRS Road King Custom
2005 Harley Davidson FLHT Electra Glide
2005 Harley Davidson FLHTC Electra Glide Classic
2005 Harley Davidson FLHTCU Electra Glide Ultra Classic
2005 Harley Davidson FLSTC Softail Heritage Classic
2005 Harley Davidson FLSTF Softail Fat Boy
2005 Harley Davidson FLSTN Softail Deluxe
2005 Harley Davidson FLSTSC Softail Springer Classic
2005 Harley Davidson FLTR Road Glide
2005 Harley Davidson FXD Dyna Super Glide
2005 Harley Davidson FXDC Dyna Super Glide Custom
2005 Harley Davidson FXDL Dyna Low Rider
2005 Harley Davidson FXDWG Dyna Wide Glide
2005 Harley Davidson FXDX Dyna Super Glide Sport
2005 Harley Davidson FXST Softail
2005 Harley Davidson FXSTB Softail Night Train
2005 Harley Davidson FXSTD Softail Deuce
2005 Harley Davidson FXSTS Softail Springer
2006 Harley Davidson FLHR Road King
2006 Harley Davidson FLHRC Road King Classic
2006 Harley Davidson FLHRS Road King Custom
2006 Harley Davidson FLHT Electra Glide
2006 Harley Davidson FLHTC Electra Glide Classic
2006 Harley Davidson FLHTCU Electra Glide Ultra Classic
2006 Harley Davidson FLHX Street Glide
2006 Harley Davidson FLST Softail Heritage
2006 Harley Davidson FLSTC Softail Heritage Classic
2006 Harley Davidson FLSTF Softail Fat Boy
2006 Harley Davidson FLSTN Softail Deluxe
2006 Harley Davidson FLSTSC Softail Springer Classic
2006 Harley Davidson FLTR Road Glide
2006 Harley Davidson FXD Dyna Super Glide
2006 Harley Davidson FXST Softail
2006 Harley Davidson FXSTB Softail Night Train
2006 Harley Davidson FXSTD Softail Deuce
2006 Harley Davidson FXSTS Softail Springer