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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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£23.62
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£22.49
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£22.49

Cometic O-ring Pushrod Cover / Oil Pump – Pushrod Cover Upper: 1984–1999 Evo Big…

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Cometic O-ring Pushrod Cover / Oil Pump – Pushrod Cover Upper: 1984–1999 Evo Big… OEM replacement reference 11157. Fitment Pushrod cover upper: 84-...

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£11.28
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£10.38
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£10.38

Cometic Quad Seal Pushrod Cover. Large Lower – L1979–1984 Shovel

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Cometic Quad Seal Pushrod Cover. Large Lower – L1979–1984 Shovel Quad rubber seal. OEM reference 11133A. Fitment L79-84 Shovel (NU) Product Details...

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£23.17
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£22.06
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£22.06

Cometic Quad Seal Pushrod Cover. Upper – L1979–1984 Shovelhead

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Cometic Quad Seal Pushrod Cover. Upper – L1979–1984 Shovelhead 4 used. Small upper. OEM replacement reference 11118. Fitment L79-84 Shovelhead (NU)...

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£22.06
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£4.79
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£4.40
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£4.40

Cometic O-ring 5Th. Gear Mainshaft Transmission – 2006–2022 XL Sportster; 2008–2012 XR1200

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Cometic O-ring 5Th. Gear Mainshaft Transmission – 2006–2022 XL Sportster; 2008–2012 XR1200 OEM replacement reference 11113. Fitment 06-22 XL Sports...

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£4.40
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£9.69
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£8.92
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£8.92

Cometic Pushrod Cover Large Lower Seal. Cork – 1948–1965 Panhead; 66-E79 Shovelhead

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Cometic Pushrod Cover Large Lower Seal. Cork – 1948–1965 Panhead; 66-E79 Shovelhead 4 used. OEM style cork material. Large lower seal. OEM replacem...

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£8.92
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£8.92
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£10.65
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£9.80

Cometic Pushrod Cover Seals. Cork – 48-E79 Big Twin: Upper & Middle.…

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Cometic Pushrod Cover Seals. Cork – 48-E79 Big Twin: Upper & Middle.… Cork. On 36-47 Knuckle and 57-E79 XL Sportsters the small seal is used as...

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£9.80
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£5.45
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£5.01

Cometic O-ring Rocker/Pushrod/Kickstart Shaft/Oil Defl. Pl – 1966–1984 Big Twin; 1957–1985 XL…

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Cometic O-ring Rocker/Pushrod/Kickstart Shaft/Oil Defl. Pl – 1966–1984 Big Twin; 1957–1985 XL… O-ring. Multiple applications. OEM replacement refer...

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£14.12
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£14.12
£13.45
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£13.45

Cometic Cylinder Base Gasket. .020" Copper 3-1/2" Bore – 1986–2022 883/1200 XL Sportster XR1200)…

Out of stock

Cometic Cylinder Base Gasket. .020" Copper 3-1/2" Bore – 1986–2022 883/1200 XL Sportster XR1200)… Copper. Standard 3-1/2" bore. Type ''B'' gaskets ...

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£13.45
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£28.23
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£26.88
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£26.88

Cometic Cylinder Base Gasket. .020" Copper 3-13/16" Bore – 1984–1999 Evo Big Twin with 3-13/16" Big…

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Cometic Cylinder Base Gasket. .020" Copper 3-13/16" Bore – 1984–1999 Evo Big Twin with 3-13/16" Big… ''Type A'' gasket. 3-13/16" big bore copper ga...

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£26.88
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£26.88
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£14.14
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£14.14
£13.46
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£13.46

Cometic Cylinder Base Gasket. .020" Copper 3-5/8" Bore – 1984–1999 Evo Big Twin with 3-5/8 Big…

Out of stock

Cometic Cylinder Base Gasket. .020" Copper 3-5/8" Bore – 1984–1999 Evo Big Twin with 3-5/8 Big… ''Type A'' gasket. 3-5/8" big bore copper gasket. T...

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£13.46
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£13.46
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£23.66
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£23.66
£22.53
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£22.53

Cometic Cylinder Base Gasket. .015" Copper 3-1/2" Bore – 1984–1999 Evo Big Twin

Out of stock

Cometic Cylinder Base Gasket. .015" Copper 3-1/2" Bore – 1984–1999 Evo Big Twin ''Type A'' gasket. 3-1/2" standard bore copper gasket. Type A gaske...

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£22.53
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£22.53
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£24.27
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£23.11
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Cometic Cylinder Base Gaskets FR/RR. .031" Fiber – 1972–1985 XL1000

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Cometic Cylinder Base Gaskets FR/RR. .031" Fiber – 1972–1985 XL1000 Fits front & rear. .031" thick fiber; a premium hi-temperature; hi-density ...

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£49.11
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£49.11
£46.76
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£46.76

Cometic Cylinder Base Gaskets FR/RR. .012" Fiber – 1957–1971 XL900

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Cometic Cylinder Base Gaskets FR/RR. .012" Fiber – 1957–1971 XL900 Fits front & rear. .012" thick fiber; a premium hi-temperature; hi-density c...

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£46.76
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£27.71
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£26.38
£26.38 - £26.38
£26.38

Cometic Cylinder Base Gasket Set FR/RR. .010" RCS – 1984–1999 Evo Big Twin; 1988–2022 XL…

Only 1 left!

Cometic Cylinder Base Gasket Set FR/RR. .010" RCS – 1984–1999 Evo Big Twin; 1988–2022 XL… Type ''B''. .010" thick RCS (Rubber Coated Steel); an emb...

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£26.38
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£26.38
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£27.71
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£27.71
£26.38
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£26.38

Cometic Cylinder Base Gasket Set FR/RR. .020" RCS – 1984–1999 Evo Big Twin; 1988–2022 XL…

Only 2 left!

Cometic Cylinder Base Gasket Set FR/RR. .020" RCS – 1984–1999 Evo Big Twin; 1988–2022 XL… Type ''B''. .020" thick RCS (Rubber Coated Steel); an emb...

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£26.38
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£5.45
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£5.45
£5.01
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£5.01

Cometic Cylinder Base Gasket Set FR/RR. .020" Fiber – 1984–1999 Evo Big Twin; 1988–2022 XL…

Only 1 left!

Cometic Cylinder Base Gasket Set FR/RR. .020" Fiber – 1984–1999 Evo Big Twin; 1988–2022 XL… Type ''B''. .020" thick fiber; a premium hi-temperature...

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£27.71
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£27.71
£26.38
£26.38 - £26.38
£26.38

Cometic Cylinder Base Gasket Set. SLS 3-5/8" Big Bore – 1986–2022 XL Sportster with 3-5/8" Big…

Out of stock

Cometic Cylinder Base Gasket Set. SLS 3-5/8" Big Bore – 1986–2022 XL Sportster with 3-5/8" Big… Front & rear gasket for one engine. .020" thick...

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£26.38
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£26.38
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£27.71
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£27.71
£26.38
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£26.38

Cometic Cylinder Base Gasket Set. SLS 3-5/8" Big Bore – 1986–2022 XL Sportster with 3-5/8" Big…

Only 2 left!

Cometic Cylinder Base Gasket Set. SLS 3-5/8" Big Bore – 1986–2022 XL Sportster with 3-5/8" Big… Front & rear gasket for one engine. .010" thick...

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£26.38
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£26.38
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£9.77
£9.77 - £9.77
£9.77
£8.99
£8.99 - £8.99
£8.99

Cometic Cylinder Base Gasket. Fiber 3-5/8" Big Bore (Pr) – 1963–1965 Panhead; 1966–1984 Shovelhead.…

Out of stock

Cometic Cylinder Base Gasket. Fiber 3-5/8" Big Bore (Pr) – 1963–1965 Panhead; 1966–1984 Shovelhead.… Front & rear gasket for one engine. .031" ...

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£8.99
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£24.27
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£23.11
£23.11 - £23.11
£23.11

Cometic Cylinder Base Gasket. Rear. .031" Fiber – 1948–1962 Panhead

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Cometic Cylinder Base Gasket. Rear. .031" Fiber – 1948–1962 Panhead Raer gasket. .031" thick fiber; a premium hi-temperature; hi-density creep resi...

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£23.11
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£23.11
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£24.27
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£23.11
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£23.11

Cometic Cylinder Base Gasket. Front. .031" Fiber – 1948–1962 Panhead

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Cometic Cylinder Base Gasket. Front. .031" Fiber – 1948–1962 Panhead Front gasket. .031" thick fiber; a premium hi-temperature; hi-density creep re...

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£23.11
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£27.71
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£26.38
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£26.38

Cometic Cylinder Base Gasket Set. SLS 3-5/8-3-3/4" Big Bore – 1984–1999 Evo Big Twin with 3-5/8" or…

Only 1 left!

Cometic Cylinder Base Gasket Set. SLS 3-5/8-3-3/4" Big Bore – 1984–1999 Evo Big Twin with 3-5/8" or… Front & rear gasket for one engine. .010" ...

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£27.71
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£26.38
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£26.38
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£27.71
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£27.71
£26.38
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£26.38

Cometic Cylinder Base Gasket Set FR/RR. .010" RCS – 1984–1999 Evo Big Twin

Only 2 left!

Cometic Cylinder Base Gasket Set FR/RR. .010" RCS – 1984–1999 Evo Big Twin Type ''A''. .010" thick RCS (Rubber Coated Steel); an embossed steel cor...

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£9.77
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£8.99

Cometic Cylinder Base Gasket Set. Fiber 4" Big Bore – 1984–1999 Evo Big Twin with 4" Big Bore…

Only 2 left!

Cometic Cylinder Base Gasket Set. Fiber 4" Big Bore – 1984–1999 Evo Big Twin with 4" Big Bore… Front & rear gasket for one engine. .020" fiber;...

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