C10121 EST motor only gasket kit. 4.125" bore
Fits: 99-17 Twin Cam (Excl. Twin Cooled).…
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Specifications
- Brand
- Cometic
- Part Number
- C10121
- OEM Reference
- —
- Pack Quantity
- Sold as kit
- Category
- Gasket Sets Motor
- VAT Rate
- 20%
About This Product
This Cometic EST motor-only gasket kit is designed for 1999 to 2017 Twin Cam engines, excluding Twin Cooled models, running a 4.125" bore. It is a comprehensive solution for a complete engine overhaul, providing all necessary gaskets and seals except for the primary gaskets. The kit features .040" Multi-Layer Steel head gaskets which eliminate the need for dowel pin o-rings. You also get .020" Single-Layer Steel base gaskets and rocker cover gaskets, both coated with Viton rubber to prevent weeping and tearing. This kit includes 1999 to 2010 style breather gaskets and 1999 to 2004 early style valve stem seals, ensuring a professional-grade sealing solution for your high-displacement engine project.
Manufacturer part number: C10121.
Fitment
75 models99-17 Twin Cam (Excl. Twin Cooled). Incl. 99-04 early valve stem seals and 99-10 style breather gaskets
CVO/Custom 17 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2009 | CVO Fat Bob (HDI) FXDFSE |
| Harley-Davidson | 2009 | CVO Fat Bob FXDFSE |
| Harley-Davidson | 2005 | CVO Fat Boy FLSTFSE |
| Harley-Davidson | 2014–2017 | CVO Limited FLHTKSE |
| Harley-Davidson | 2016–2017 | CVO Pro Street Breakout FXSE |
| Harley-Davidson | 2011–2015 | CVO Road Glide FLTRUSE |
| Harley-Davidson | 2012 | CVO Road Glide FLTRXSE |
| Harley-Davidson | 2016 | CVO Road Glide Ultra FLTRUSE |
| Harley-Davidson | 2014 | CVO Road King FLHR 103 |
| Harley-Davidson | 2014 | CVO Road King FLHRSE |
| Harley-Davidson | 2013–2014 | CVO Softail Breakout FXSBSE |
| Harley-Davidson | 2010 | CVO Softail Convertible FLSTSE |
| Harley-Davidson | 2014–2015 | CVO Softail Deluxe FLSTNSE |
| Harley-Davidson | 2007 | CVO Softail Springer FXSTSSE |
| Harley-Davidson | 2010–2017 | CVO Street Glide FLHXSE |
| Harley-Davidson | 2006 | CVO Ultra Classic FLHTCUSE |
| Harley-Davidson | 2014 | Road King FLHR |
Dyna 15 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2008–2017 | Dyna Fat Bob FXDF |
| Harley-Davidson | 2012–2017 | Dyna Fat Bob FXDF 103 |
| Harley-Davidson | 1999–2017 | Dyna Low Rider FXDL |
| Harley-Davidson | 2014–2017 | Dyna Low Rider FXDL 103 |
| Harley-Davidson | 2007–2017 | Dyna Street Bob FXDB |
| Harley-Davidson | 2014–2017 | Dyna Street Bob FXDB 103 |
| Harley-Davidson | 2013 | Dyna Super Glide Custom Anv FXDC |
| Harley-Davidson | 2005–2014 | Dyna Super Glide Custom FXDC |
| Harley-Davidson | 2014 | Dyna Super Glide Custom FXDC 103 |
| Harley-Davidson | 1999–2010 | Dyna Super Glide FXD |
| Harley-Davidson | 1999–2005 | Dyna Super Glide Sport FXDX |
| Harley-Davidson | 2008 | Dyna Wide Glide 105th Anv FXDWG |
| Harley-Davidson | 1999–2016 | Dyna Wide Glide FXDWG |
| Harley-Davidson | 2012–2017 | Dyna Wide Glide FXDWG 103 |
| Harley-Davidson | 2017 | Low Rider FXDL 103 |
Police 1 model
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2007–2017 | Electra Glide Standard Police FLHTP |
Softail 14 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2017 | Deluxe FLSTN |
| Harley-Davidson | 1999–2017 | Fat Boy FLSTF |
| Harley-Davidson | 2012–2015 | Fat Boy FLSTF 103 |
| Harley-Davidson | 2013 | Heritage Softail Classic Anv FLSTC |
| Harley-Davidson | 2013 | Heritage Softail Classic Anv FLSTC 103 |
| Harley-Davidson | 1999–2017 | Heritage Softail Classic FLSTC |
| Harley-Davidson | 2012–2015 | Heritage Softail Classic FLSTC 103 |
| Harley-Davidson | 1999–2009 | Night Train FXSTB |
| Harley-Davidson | 1999–2010 | Softail Custom FXSTC |
| Harley-Davidson | 2005–2016 | Softail Deluxe FLSTN |
| Harley-Davidson | 2012–2015 | Softail Deluxe FLSTN 103 |
| Harley-Davidson | 2005–2006 | Softail Deluxe FLSTNI |
| Harley-Davidson | 1999–2015 | Softail Standard FXST |
| Harley-Davidson | 1999–2006 | Springer Softail FXSTS |
Touring 24 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2014 | CVO Limited FLHTK 103 |
| Harley-Davidson | 1999–2013 | Electra Glide Classic FLHTC |
| Harley-Davidson | 2011 | Electra Glide Classic FLHTC 103 |
| Harley-Davidson | 2017 | Electra Glide Ultra Classic FLHTCU |
| Harley-Davidson | 2013 | Electra Glide Ultra Limited Anv FLHTK |
| Harley-Davidson | 2010–2013 | Electra Glide Ultra Limited FLHTK |
| Harley-Davidson | 2011 | FB4 Road King FLHR |
| Harley-Davidson | 2010–2013 | Road Glide Custom FLTRX |
| Harley-Davidson | 2011 | Road Glide Custom FLTRX 103 |
| Harley-Davidson | 1999–2009 | Road Glide FLTR |
| Harley-Davidson | 2015–2017 | Road Glide FLTRX |
| Harley-Davidson | 2015–2017 | Road Glide Special FLTRXS |
| Harley-Davidson | 2013 | Road King Anv FLHR |
| Harley-Davidson | 2007–2017 | Road King Classic FLHRC |
| Harley-Davidson | 2011 | Road King Classic FLHRC 103 |
| Harley-Davidson | 1999–2017 | Road King FLHR |
| Harley-Davidson | 2011 | Road King FLHR 103 |
| Harley-Davidson | 2006–2017 | Street Glide FLHX |
| Harley-Davidson | 2011 | Street Glide FLHX 103 |
| Harley-Davidson | 2014–2017 | Street Glide Special FLHXS |
| Harley-Davidson | 2007–2016 | Ultra Classic FLHTCU |
| Harley-Davidson | 2014–2016 | Ultra Classic Twin-Cooled FLHTCU |
| Harley-Davidson | 2014–2017 | Ultra Limited FLHTK |
| Harley-Davidson | 2017 | Ultra Limited Shrine FLHTK |
Trike 4 models
| Brand | Year | Model |
|---|---|---|
| Harley-Davidson | 2015–2017 | Freewheeler FLRT |
| Harley-Davidson | 2013 | Tri Glide Ultra Classic Anv FLHTCUTG |
| Harley-Davidson | 2009–2016 | Tri Glide Ultra Classic FLHTCUTG |
| Harley-Davidson | 2017 | Tri Glide Ultra FLHTCUTG |
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