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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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£203.13
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£200.30
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£200.30

MCS 3-5/8" Big Bore Shovel Cylinder Front, Black – 1966–1984 Shovel

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MCS 3-5/8" Big Bore Shovel Cylinder Front, Black – 1966–1984 Shovel Stock 5.330" length. Crankcases must be bored to accept the larger diameter cyl...

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£200.30
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£221.86
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£194.28
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£194.28

MCS Replacement Cylinder 80" Shovelhead, Rear – 1979–1984 80" (1340cc) Shovel

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MCS Replacement Cylinder 80" Shovelhead, Rear – 1979–1984 80" (1340cc) Shovel Black painted stock replacement cast iron cylinder. Stock 3-1/2" bore...

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£194.28
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£194.28
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£34.38
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£34.38
£27.44
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£27.44

K&N Crankcase Breather Filter. Male 1/2" Connector – 1/2" Hose

Out of stock

K&N Crankcase Breather Filter. Male 1/2" Connector – 1/2" Hose Chrome. Fits a 1/2" oil hose. Designed for use on the crankcase ventilation syst...

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£34.38
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£34.38
£27.44
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£27.44

K&N Crankcase Breather Filter. Female 3/8" Connector – 3/8" Nipple

Only 1 left!

K&N Crankcase Breather Filter. Female 3/8" Connector – 3/8" Nipple Female rubber connector to fit a 3/8" nipple. Can be installed directly to t...

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£27.44
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£27.44
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£34.38
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£34.38
£27.44
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£27.44

K&N Crankcase Breather Filter. Male 3/8" Connector – 3/8" Hoses

Only 4 left!

K&N Crankcase Breather Filter. Male 3/8" Connector – 3/8" Hoses Chrome. Fits a 3/8" oil hose (standard H-D oil hose). Designed for use on the c...

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£27.44
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£27.44
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£121.44
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£120.62
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£120.62

MCS Pinion Shaft, L83-86 B.T – L1983–1986 Big Twin

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MCS Pinion Shaft, L83-86 B.T – L1983–1986 Big Twin Repl. 24006-83. Fitment L83-86 Big Twin (NU) Product Details Brand: MCS Category: MOTOR PARTS...

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£120.62
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£120.62
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£58.79
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£50.22
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£50.22

MCS 53-84 Tappet Block, Front. Black – 1953–1965 Panhead; 1966–1984 Shovelhead

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MCS 53-84 Tappet Block, Front. Black – 1953–1965 Panhead; 1966–1984 Shovelhead Replacement for L76-84 Shovel (excl. L1982 models with special route...

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£58.79
£50.22
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£115.10
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£109.59
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£109.59

Gardner-Westcott Cam Cover Mount Kit. Acorn – 1936–1969 FL; 1932–1973 45" Flathead

Out of stock

Gardner-Westcott Cam Cover Mount Kit. Acorn – 1936–1969 FL; 1932–1973 45" Flathead Gardner-Westcott, cam cover mount kit. Acorn Fitment 36-69 FL; 3...

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£115.10
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£109.59
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£5.93
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MCS Thrust Washer Camshaft. .005" – 1954–1985 XL Sportster; 1937–1973 45"…

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MCS Thrust Washer Camshaft. .005" – 1954–1985 XL Sportster; 1937–1973 45"… Camshaft shim; used to achieve correct cam end-play. Fitment 54-85 XL Sp...

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£5.65
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£8.87
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Belt Drives Ltd. Oil Seal for BDL TC Cam Cover – 1999–2017 Twin Cam with Gear Driven Cams…

Only 2 left!

Belt Drives Ltd. Oil Seal for BDL TC Cam Cover – 1999–2017 Twin Cam with Gear Driven Cams… Replacement part for 515186 BDL cam cover for Twin Cam m...

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£8.87
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£8.15
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£13.52
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Belt Drives Ltd. Cam End Bolt for BDL TC Cam Cover – 1999–2017 Twin Cam with Gear Driven Cams…

Only 2 left!

Belt Drives Ltd. Cam End Bolt for BDL TC Cam Cover – 1999–2017 Twin Cam with Gear Driven Cams… Replacement part for 515186 BDL cam cover for Twin C...

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£13.52
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£50.11
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£47.70
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Belt Drives Ltd. Cam End Adapter for BDL TC Cam Cover – 1999–2017 Twin Cam with Gear Driven Cams…

Only 2 left!

Belt Drives Ltd. Cam End Adapter for BDL TC Cam Cover – 1999–2017 Twin Cam with Gear Driven Cams… Replacement part for 515186 BDL cam cover for Twi...

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£50.11
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£50.11
£47.70
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£998.51 - £998.51
£998.51
£1,006.18
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Belt Drives Ltd. Billet Cam Cover for Twin Cam – 2001–2017 Twin Cam; S&S T-series…

Out of stock

Belt Drives Ltd. Billet Cam Cover for Twin Cam – 2001–2017 Twin Cam; S&S T-series… Billet polished aluminum. This kit converts Twin Cam engines...

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£998.51
£1,006.18
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£1,006.18
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£97.11
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£92.45
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£92.45

Gardner-Westcott Head Bolt Kit, 12-Point. Chrome – 1948–1984 Big Twin

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Gardner-Westcott Head Bolt Kit, 12-Point. Chrome – 1948–1984 Big Twin Chrome plated. Traditionally used with big bore cylinders where space is limi...

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£97.11
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£92.45
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£11.92
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MCS Rocker Arm Shaft. Import – 1957–1985 XL Sportster

Only 3 left!

MCS Rocker Arm Shaft. Import – 1957–1985 XL Sportster OEM style replacement. Repl. 17435-57B. Note: On 57-70 XL models the 71-85 end plug must be u...

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£11.92
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£10.62
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£15.74
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£14.48
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£14.48

Manley Valve Guide Seal Set. Viton 4-Pk – 2005–2017 Twin Cam; 2004–2022 XL…

Only 3 left!

Manley Valve Guide Seal Set. Viton 4-Pk – 2005–2017 Twin Cam; 2004–2022 XL… With 4 seals. Comes with with built-in spring-loaded Viton wipers. Valv...

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£15.74
£14.48
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£82.14
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£78.21
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£78.21

Manley Valve Guide Seal Set. Viton (24) – 1984–1999 Evo Big Twin; 1999–2004 Twin…

Only 2 left!

Manley Valve Guide Seal Set. Viton (24) – 1984–1999 Evo Big Twin; 1999–2004 Twin… With 24 seals. Comes with with built-in spring-loaded Viton wiper...

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£82.14
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£82.14
£78.21
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£78.21
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£15.74
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£14.48
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Manley Valve Guide Seal Set. Viton 4-Pk – 1984–1999 Evo Big Twin; 1999–2004 Twin…

Only 2 left!

Manley Valve Guide Seal Set. Viton 4-Pk – 1984–1999 Evo Big Twin; 1999–2004 Twin… With 4 seals. Comes with with built-in spring-loaded Viton wipers...

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£14.48
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£15.74
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£14.48
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£14.48

Manley Valve Guide Seal Set. Viton 4-Pk – L1981–1984 1340cc Shovelhead

Out of stock

Manley Valve Guide Seal Set. Viton 4-Pk – L1981–1984 1340cc Shovelhead With 4 seals. Comes with with built-in spring-loaded Viton wipers. Valve ste...

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£15.74
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£14.48
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£14.48

Manley Valve Guide Seal Set. Viton 4-Pk – 48-E79 Big Twin

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Manley Valve Guide Seal Set. Viton 4-Pk – 48-E79 Big Twin With 4 seals. Comes with with built-in spring-loaded Viton wipers. Valve stem seals can b...

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£14.48
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£14.48
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£15.74
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£14.48
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Manley Valve Guide Seal Set. Viton 4-Pk – 1957–1985 XL Sportster

Only 2 left!

Manley Valve Guide Seal Set. Viton 4-Pk – 1957–1985 XL Sportster With 4 seals. Comes with with built-in spring-loaded Viton wipers. Valve stem seal...

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£15.74
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£14.48
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£110.71
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£109.17
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£109.17

Manley Valve Spring Top Collar Set. Titanium – 1984–1999 Evo Big Twin; 1999–2004 Twin…

Only 2 left!

Manley Valve Spring Top Collar Set. Titanium – 1984–1999 Evo Big Twin; 1999–2004 Twin… OEM style replacement precision machined titanium valve spri...

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£110.71
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£110.71
£109.17
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£44.63
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£41.07
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£41.07

Manley Valve Spring Top Collar Set. Steel – 1984–1999 Evo Big Twin; 1999–2004 Twin…

Out of stock

Manley Valve Spring Top Collar Set. Steel – 1984–1999 Evo Big Twin; 1999–2004 Twin… OEM style replacement precision machined steel valve spring top...

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£44.63
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£44.63
£41.07
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£110.71
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£110.71
£109.17
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£109.17

Manley Valve Spring Top Collar Set. Titanium – 1936–1984 Big Twin

Only 2 left!

Manley Valve Spring Top Collar Set. Titanium – 1936–1984 Big Twin OEM style replacement precision machined titanium valve spring top collars. Manle...

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£109.17
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£109.17
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