Cometic EST Top End Gasket Kit – 3.875 in. Bore /.051 in. MLS Head Gasket
Cometic part number C9951-051. Designed for Harley-Davidson Twin Cam V-Twin engines, this EST (Extreme Sealing Technology) top end gasket kit contains every gasket, seal, washer, and O-ring needed for a complete top-end rebuild from the cylinder base upward.
Kit Contents
- MLS (Multi-Layer Steel) head gaskets – embossed stainless steel covered with a proprietary rubber material
- Steel Viton-coated base gaskets
- AFM material rocker gaskets
- All necessary O-rings and seals for a complete top-end overhaul
Features
- EST gasket design draws heat away from the combustion ring and dissipates it evenly across the gasket surface to help eliminate hot spots and gasket failure
- Materials and manufacturing processes engineered to match the performance demands of high-output V-Twin engines
- Gaskets and seals tested on the street, track, and in-house dynamometer
Fits the following:
- Harley-Davidson Blackline FXS: 2011-2013
- Harley-Davidson Breakout FXSB: 2013-2017
- Harley-Davidson Cross Bones FLSTSB: 2008-2011
- Harley-Davidson Dyna Convertible FXDS-Conv: 1999-2000
- Harley-Davidson Dyna Fat Bob FXDF: 2008-2017
- Harley-Davidson Dyna Low Rider FXDL: 1999-2002, 2007-2009
- Harley-Davidson Dyna Low Rider FXDLS: 2016-2017
- Harley-Davidson Dyna Super Glide Custom FXDC: 2007-2014
- Harley-Davidson Dyna Super Glide FXD: 1999-2002, 2007-2010
- Harley-Davidson Dyna Super Glide Sport FXDX: 1999-2002
- Harley-Davidson Dyna Super Glide T-Sport FXDX-T: 2001-2002
- Harley-Davidson Dyna Switchback FLD: 2012-2015
- Harley-Davidson Dyna Wide Glide FXDWG: 1999-2002
- Harley-Davidson Dyna Wide Glide Screamin Eagle FXDWG2: 2001
- Harley-Davidson Dyna Wide Glide Screamin Eagle FXDWG3: 2002
- Harley-Davidson Electra Glide Classic EFI FLHTCI: 1999-2002
- Harley-Davidson Electra Glide Classic FLHTC: 1999-2002, 2007-2013
- Harley-Davidson Electra Glide FLHT: 1999-2002, 2007-2009
- Harley-Davidson Electra Glide Low Ultra Classic FLHTCUL: 2015-2016
- Harley-Davidson Electra Glide Low Ultra Limited FLHTKL: 2015
- Harley-Davidson Electra Glide Ultra Classic EFI FLHTCUI: 1999-2002
- Harley-Davidson Electra Glide Ultra Classic FLHTCU: 1999-2002, 2007-2016
- Harley-Davidson Electra Glide Ultra Limited FLHTK: 2010-2014
- Harley-Davidson FLD Switchback: 2016
- Harley-Davidson FLSTCI Heritage Softail Classic: 2001
- Harley-Davidson FLTRSEI2 Screamin Eagle Road Glide 2: 2001
- Harley-Davidson Fat Boy EFI FLSTFI: 2001-2002
- Harley-Davidson Fat Boy FLSTF: 1999-2002, 2007-2017
- Harley-Davidson Fat Boy Lo FLSTFB: 2010-2016
- Harley-Davidson Fat Boy Lo S FLSTFBS: 2016-2017
- Harley-Davidson Freewheeler FLRT: 2015-2016
- Harley-Davidson Heritage Softail Classic EFI FLSTCI: 2002
- Harley-Davidson Heritage Softail Classic FLSTC: 1999-2002, 2007-2017
- Harley-Davidson Heritage Springer EFI FLSTSI: 2001-2002
- Harley-Davidson Heritage Springer FLSTS: 1999-2002
- Harley-Davidson Night Train EFI FXSTBI: 2001-2002
- Harley-Davidson Night Train FXSTB: 1999-2002, 2007-2009
- Harley-Davidson Road Glide Custom FLTRX: 2010-2013
- Harley-Davidson Road Glide EFI FLTRI: 1999-2002
- Harley-Davidson Road Glide FLTR: 1999-2002, 2007-2009