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Dyna – Engine & Gaskets

Browse engine & gaskets selected for Harley-Davidson Dyna motorcycles. Available items span engine components and gaskets, seals and service parts, helping you compare parts intended for different jobs. Confirm model coverage, key measurements and any supporting parts required on the individual listing.

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£74.00
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£71.44
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£71.44

Cometic Cylinder Head Gaskets 3-3/4" Bore .060" MLS – 1999–2017 88"/96" Twin Cam A/B

Only 2 left!

Cometic Cylinder Head Gaskets 3-3/4" Bore .060" MLS – 1999–2017 88"/96" Twin Cam A/B MLS (Multi Layer Steel). Front & rear gasket for one engin...

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£74.00
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£74.00
£71.44
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£71.44
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£74.00
£74.00 - £74.00
£74.00
£71.44
£71.44 - £71.44
£71.44

Cometic Cylinder Head Gaskets 3-7/8" Bore .060" MLS – 1999–2017 Twin Cam. With 3-7/8" Bore…

Only 2 left!

Cometic Cylinder Head Gaskets 3-7/8" Bore .060" MLS – 1999–2017 Twin Cam. With 3-7/8" Bore… MLS (Multi Layer Steel). Front & rear gasket for on...

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£74.00
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£74.00
£71.44
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£71.44
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£51.20
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£51.20
£48.75
£48.75 - £48.75
£48.75

Cometic Cylinder Head Gaskets 4" Bore .040" MLS – 1999–2017 Twin Cam

Only 1 left!

Cometic Cylinder Head Gaskets 4" Bore .040" MLS – 1999–2017 Twin Cam MLS (Multi Layer Steel). Front & rear gasket for one engine. 4.00" bore fi...

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£51.20
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£51.20
£48.75
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£48.75
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£51.20
£51.20 - £51.20
£51.20
£48.75
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£48.75

Cometic Cylinder Head Gaskets 4" Bore .030" MLS – 1999–2017 Twin Cam

Only 2 left!

Cometic Cylinder Head Gaskets 4" Bore .030" MLS – 1999–2017 Twin Cam MLS (Multi Layer Steel). Front & rear gasket for one engine. 4.00" bore fi...

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£51.20
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£51.20
£48.75
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£48.75
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£51.20
£51.20 - £51.20
£51.20
£48.75
£48.75 - £48.75
£48.75

Cometic Cylinder Head Gaskets 3-7/8" Bore .040" MLS – 1999–2017 Twin Cam. With 3-7/8" Bore…

Only 2 left!

Cometic Cylinder Head Gaskets 3-7/8" Bore .040" MLS – 1999–2017 Twin Cam. With 3-7/8" Bore… MLS (Multi Layer Steel). Front & rear gasket for on...

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£51.20
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£51.20
£48.75
£48.75 - £48.75
£48.75
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£51.20
£51.20 - £51.20
£51.20
£48.75
£48.75 - £48.75
£48.75

Cometic Cylinder Head Gaskets 3-7/8" Bore .030" MLS – 1999–2017 Twin Cam. With 3-7/8" Bore…

Only 2 left!

Cometic Cylinder Head Gaskets 3-7/8" Bore .030" MLS – 1999–2017 Twin Cam. With 3-7/8" Bore… MLS (Multi Layer Steel). Front & rear gasket for on...

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£51.20
£51.20 - £51.20
£51.20
£48.75
£48.75 - £48.75
£48.75
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£51.20
£51.20 - £51.20
£51.20
£48.75
£48.75 - £48.75
£48.75

Cometic Cylinder Head Gaskets 3-3/4" Bore .040" MLS – 1999–2017 88"/96" Twin Cam A/B

Only 1 left!

Cometic Cylinder Head Gaskets 3-3/4" Bore .040" MLS – 1999–2017 88"/96" Twin Cam A/B MLS (Multi Layer Steel). Front & rear gasket for one engin...

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£51.20
£51.20 - £51.20
£51.20
£48.75
£48.75 - £48.75
£48.75
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£51.20
£51.20 - £51.20
£51.20
£48.75
£48.75 - £48.75
£48.75

Cometic Cylinder Head Gaskets 3-3/4" Bore .030" MLS – 1999–2017 88"/96" Twin Cam

Only 2 left!

Cometic Cylinder Head Gaskets 3-3/4" Bore .030" MLS – 1999–2017 88"/96" Twin Cam MLS (Multi Layer Steel). Front & rear gasket for one engine. O...

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£51.20
£51.20 - £51.20
£51.20
£48.75
£48.75 - £48.75
£48.75
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£4.91
£4.91 - £4.91
£4.91
£4.51
£4.51 - £4.51
£4.51

Cometic O-ring Breather Baffle – 1999–2010 Twin Cam

Only 2 left!

Cometic O-ring Breather Baffle – 1999–2010 Twin Cam 2 used. OEM replacement reference 11270. Fitment 99-10 Twin Cam (NU) Product Details Brand: C...

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£4.91
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£4.91
£4.51
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£4.51
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£11.95
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£11.95
£11.38
£11.38 - £11.38
£11.38

Cometic Gasket Breather Baffle – 1999–2010 Twin Cam

Only 2 left!

Cometic Gasket Breather Baffle – 1999–2010 Twin Cam .031" fiber. 2 used. OEM replacement reference 17592-99 Fitment 99-10 Twin Cam (NU) Product Det...

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£11.95
£11.95 - £11.95
£11.95
£11.38
£11.38 - £11.38
£11.38
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£17.53
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£17.53
£16.69
£16.69 - £16.69
£16.69

Cometic Filter Element, Breather Baffle – 1999–2010 Twin Cam

Only 2 left!

Cometic Filter Element, Breather Baffle – 1999–2010 Twin Cam Replaces OEM 63815-99. Fitment 99-10 Twin Cam (NU) Product Details Brand: Cometic C...

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£17.53
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£17.53
£16.69
£16.69 - £16.69
£16.69
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£44.59
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£44.59
£42.45
£42.45 - £42.45
£42.45

Cometic Umbrella Valve – 1999–2010 Twin Cam

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Cometic Umbrella Valve – 1999–2010 Twin Cam Rubber valve cover seal. For the head breathing system. Fitment 99-10 Twin Cam (NU) Product Details B...

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£44.59
£44.59 - £44.59
£44.59
£42.45
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£42.45
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£11.95
£11.95 - £11.95
£11.95
£11.38
£11.38 - £11.38
£11.38

Cometic Gaskets Breather Cover – 1999–2010 Twin Cam

Only 2 left!

Cometic Gaskets Breather Cover – 1999–2010 Twin Cam Fiber with a compressed thickness of .031". OEM replacement reference 17591-99 Fitment 99-10 Tw...

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£11.95
£11.95 - £11.95
£11.95
£11.38
£11.38 - £11.38
£11.38
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£87.46
£87.46 - £87.46
£87.46
£84.43
£84.43 - £84.43
£84.43

Cometic Gasket Lower Rocker Cover. RCS – 1999–2017 Twin Cam

Only 1 left!

Cometic Gasket Lower Rocker Cover. RCS – 1999–2017 Twin Cam .020" RCS (Rubber Coated Steel). 1-piece left/right gasket.; 2 used on one engine. OEM ...

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£87.46
£87.46 - £87.46
£87.46
£84.43
£84.43 - £84.43
£84.43
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£87.46
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£87.46
£84.43
£84.43 - £84.43
£84.43

Cometic Gasket Rocker Cover. Upper. RCS – 1999–2017 Twin Cam

Only 2 left!

Cometic Gasket Rocker Cover. Upper. RCS – 1999–2017 Twin Cam .020" RCS (Rubber Coated Steel). OEM replacement reference 17386-99; 17386-99A Fitment...

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£87.46
£87.46 - £87.46
£87.46
£84.43
£84.43 - £84.43
£84.43
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£21.56
£21.56 - £21.56
£21.56
£20.53
£20.53 - £20.53
£20.53

Cometic Cam Gear Change Gasket Kit – 1993–1999 Big Twin

Out of stock

Cometic Cam Gear Change Gasket Kit – 1993–1999 Big Twin Paper gaskets. Complete with all gaskets and seals you need when the camshaft is replaced. ...

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£21.56
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£21.56
£20.53
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£20.53
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£26.69
£26.69 - £26.69
£26.69
£25.42
£25.42 - £25.42
£25.42

Cometic Cam Gear Change Gasket Kit. 70-92 B.T – 1970–1992 Big Twin

Out of stock

Cometic Cam Gear Change Gasket Kit. 70-92 B.T – 1970–1992 Big Twin Paper. Complete with all gaskets and seals you need when the camshaft is replace...

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£26.69
£26.69 - £26.69
£26.69
£25.42
£25.42 - £25.42
£25.42
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Sold out
£61.64
£61.64 - £61.64
£61.64
£58.69
£58.69 - £58.69
£58.69

Cometic Cam Gear Change Gasket & Seal Kit – 1999–2017 Twin Cam

Out of stock

Cometic Cam Gear Change Gasket & Seal Kit – 1999–2017 Twin Cam Complete with all gear cover & rocker box cover gaskets and seals you need w...

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£61.64
£61.64 - £61.64
£61.64
£58.69
£58.69 - £58.69
£58.69
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Sold out
£39.24
£39.24 - £39.24
£39.24
£37.36
£37.36 - £37.36
£37.36

Cometic 5-Speed Transmission Gasket & Seal Kit – 1999–2005 Twin Cam Dyna

Out of stock

Cometic 5-Speed Transmission Gasket & Seal Kit – 1999–2005 Twin Cam Dyna Everything you need when assembling the transmission. Fitment 99-05 Tw...

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£39.24
£39.24 - £39.24
£39.24
£37.36
£37.36 - £37.36
£37.36
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Sold out
£39.24
£39.24 - £39.24
£39.24
£37.36
£37.36 - £37.36
£37.36

Cometic 5-Speed Transmission Gasket & Seal Kit – 2000–2006 Softail; 1999–2006 FLT/Touring

Out of stock

Cometic 5-Speed Transmission Gasket & Seal Kit – 2000–2006 Softail; 1999–2006 FLT/Touring Everything you need when assembling the transmission....

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£39.24
£39.24 - £39.24
£39.24
£37.36
£37.36 - £37.36
£37.36
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£67.66
£67.66 - £67.66
£67.66
£64.42
£64.42 - £64.42
£64.42

Cometic 5-Speed Transmission Gasket & Seal Kit – 1993–1998 FLT/Touring; 1993–1999 Softail

Only 2 left!

Cometic 5-Speed Transmission Gasket & Seal Kit – 1993–1998 FLT/Touring; 1993–1999 Softail Everything you need when assembling the transmission....

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£67.66
£67.66 - £67.66
£67.66
£64.42
£64.42 - £64.42
£64.42
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£46.66
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£46.66
£44.43
£44.43 - £44.43
£44.43

Cometic Transmission Gasket & Seal Kit – 1991–1998 Dyna

Only 2 left!

Cometic Transmission Gasket & Seal Kit – 1991–1998 Dyna Everything you need when assembling the transmission. OEM replacement reference 33031-9...

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£46.66
£46.66 - £46.66
£46.66
£44.43
£44.43 - £44.43
£44.43
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£83.31
£83.31 - £83.31
£83.31
£80.43
£80.43 - £80.43
£80.43

Cometic 5-Speed Transmission Gasket & Seal Kit – L1982–1992 Big Twin 5-Speed Big Twin

Out of stock

Cometic 5-Speed Transmission Gasket & Seal Kit – L1982–1992 Big Twin 5-Speed Big Twin Everything you need when assembling the transmission. OEM...

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£83.31
£83.31 - £83.31
£83.31
£80.43
£80.43 - £80.43
£80.43
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£72.17
£72.17 - £72.17
£72.17
£68.71
£68.71 - £68.71
£68.71

Cometic 5-Speed Transmission Gasket & Seal Kit – 80-E84 5-Speed Big Twin

Only 1 left!

Cometic 5-Speed Transmission Gasket & Seal Kit – 80-E84 5-Speed Big Twin Everything you need when assembling the transmission. OEM replacement ...

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£72.17
£72.17 - £72.17
£72.17
£68.71
£68.71 - £68.71
£68.71
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