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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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Jims 29-85 Tappet Roller Repair Kit – 1929–1985 All H-D

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Jims 29-85 Tappet Roller Repair Kit – 1929–1985 All H-D Complete reproduction tappet rollers with needle bearings and axles. Repl. 18534-29A. Tech ...

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£171.81
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Jims 36-52 Crankpin. STD – 1936–1947 61" (1000cc) Knuckle…

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Jims 36-52 Crankpin. STD – 1936–1947 61" (1000cc) Knuckle… Standard O.D. 1.249". 1-hole design for stock flywheels. Use JIMS 978250 crankpin nuts a...

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£142.23
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MCS 84-99 Tappet Block Set Front/Rear. Black – 1984–1999 Evo Big Twin

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MCS 84-99 Tappet Block Set Front/Rear. Black – 1984–1999 Evo Big Twin Black painted cast aluminum lifter block set. OEM style. Repl. 18622-85B rear...

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£142.23
£123.78
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£197.92
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MCS 84-99 Tappet Block Set Front/Rear. Chrome – 1984–1999 Evo Big Twin

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MCS 84-99 Tappet Block Set Front/Rear. Chrome – 1984–1999 Evo Big Twin Chrome plated cast aluminum lifter block set. OEM style. Repl. 18622-85B rea...

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£197.92
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£173.31
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Colony Rocker Shaft Plug Set. Knuckle Style. Chrome – 66-E71 Shovelhead; 57-E71 XL Sportster

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Colony Rocker Shaft Plug Set. Knuckle Style. Chrome – 66-E71 Shovelhead; 57-E71 XL Sportster Chrome plated. Styled after the Knucklehead rocker nut...

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Colony Rocker Shaft End Plug Set. Knuckle Style. Chrome – 1971–1984 Shovelhead; 1971–1985 XL…

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Colony Rocker Shaft End Plug Set. Knuckle Style. Chrome – 1971–1984 Shovelhead; 1971–1985 XL… Chrome plated. Knucklehead styled plugs. Complete set...

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£49.22
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Colony Shovel Rocker Box Top Nut Kit. Chrome, Acorn – 1966–1984 Shovelhead

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Colony Shovel Rocker Box Top Nut Kit. Chrome, Acorn – 1966–1984 Shovelhead Chrome plated. Includes 18 custom acorn nuts; washers and 4 rocker shaft...

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Colony B.T. Ribbed Lower Pushrod Cover Set. Chrome – 1948–1965 Panhead; 66-E79 Shovelhead

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Colony B.T. Ribbed Lower Pushrod Cover Set. Chrome – 1948–1965 Panhead; 66-E79 Shovelhead Chrome plated steel; custom ribbed; lower pushrod covers....

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Colony Manifold Intake Seals. Plumber Style – 1940–1954 74"/61" OHV Big Twin…

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Colony Manifold Intake Seals. Plumber Style – 1940–1954 74"/61" OHV Big Twin… Brass seals. Used between manifold and cylinder head. OEM replacement...

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MCS 57-85 Sportster Billet Tappet Block Set. Polished – 1957–1985 XL Sportster

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MCS 57-85 Sportster Billet Tappet Block Set. Polished – 1957–1985 XL Sportster Billet aluminum. USA made. Replaces 18607-57B. Fitment 57-85 XL Spor...

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£120.19
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Jims 57-85 Sportster Billet Tappet Block. Polished – 1957–1985 XL Sportster

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Jims 57-85 Sportster Billet Tappet Block. Polished – 1957–1985 XL Sportster Polished. Precision machined from a 7075-T651 billet aluminum bar; whic...

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MCS Twin Cam Rocker Cover Kit, Custom Style – 1999–2017 Twin Cam

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MCS Twin Cam Rocker Cover Kit, Custom Style – 1999–2017 Twin Cam Chrome plated. Custom style 2-piece die-cast aluminum imported rocker box kit; inc...

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Manley Valve Key Set (8) – 1936–1947 Knucklehead; 1948–1965…

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Manley Valve Key Set (8) – 1936–1947 Knucklehead; 1948–1965… Stock style replacement. Heat treated; black oxided and 100% machined from a special c...

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£136.77
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Manley Valve Spring Kit. Steel. Std to .550" Lift – 1984–1999 Evo Big Twin; 1999–2004 Twin…

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Manley Valve Spring Kit. Steel. Std to .550" Lift – 1984–1999 Evo Big Twin; 1999–2004 Twin… Steel top collars and a spring set. Can be used as a di...

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£136.77
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Manley High Lift Valve Spring Kit. .500" to .650" Lift – 1966–1984 Shovelhead

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Manley High Lift Valve Spring Kit. .500" to .650" Lift – 1966–1984 Shovelhead Includes titanium top collars; steel lower collars; valve springs and...

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£245.83
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£242.41
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£39.18
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Manley Valve Key Set (8) – 1957–1985 XL Sportster; 1937–1948…

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Manley Valve Key Set (8) – 1957–1985 XL Sportster; 1937–1948… Stock replacement. Heat treated; black oxided and 100% machined from a special chromo...

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£39.18
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£36.06
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Manley Valve Spring Kit. Titanium. Std to .650" Lift – 1984–1999 Evo Big Twin; 1999–2004 Twin…

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Manley Valve Spring Kit. Titanium. Std to .650" Lift – 1984–1999 Evo Big Twin; 1999–2004 Twin… Titanium top collars and a spring set. Can be used a...

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Manley Valve Spring Kit. Stock to .495" Lift – 1966–1979 Shovelhead

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Manley Valve Spring Kit. Stock to .495" Lift – 1966–1979 Shovelhead Includes steel top collars; steel lower collars and valve springs. No machining...

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£149.48
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Manley Valve Spring. Stock to .495" Lift – 1966–1979 Shovelhead

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Manley Valve Spring. Stock to .495" Lift – 1966–1979 Shovelhead Includes titanium top collars; steel lower collars and valve springs. No machining ...

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£221.82
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£218.73
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£132.01
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Manley Valve Spring Kit. Std to .490" Lift – 1957–1985 XL Sportster

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Manley Valve Spring Kit. Std to .490" Lift – 1957–1985 XL Sportster Incl. steel top collars and dual spring style valve springs. No machining requi...

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Manley Severe Duty Stainless Valves, Intake. Conversion – 1986–2003 XL883. For Full 883-1200…

Out of stock

Manley Severe Duty Stainless Valves, Intake. Conversion – 1986–2003 XL883. For Full 883-1200… Used for 883-1200 conversion. Valve length is same as...

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Manley Race Master Exhaust Valve Set. STD – 1984–1999 Evo Big Twin

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Manley Race Master Exhaust Valve Set. STD – 1984–1999 Evo Big Twin Quality replacement valves; lower priced than the Manley ''Severe Duty'' valves....

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£70.26
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£64.66
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Manley Severe Duty Stainless Valves, Intake. STD – 1957–1969 XL Sportster

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Manley Severe Duty Stainless Valves, Intake. STD – 1957–1969 XL Sportster Standard size replacement. Dimensions: 1.813" head dia. x .309" stem dia....

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Colony Primary Cover Mount Kit. Acorn – 1980–1984 FLT/Touring; 1982–1984 FXR

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Colony Primary Cover Mount Kit. Acorn – 1980–1984 FLT/Touring; 1982–1984 FXR Colony primary cover mount kit. Acorn Fitment 80-84 FLT/Touring; 82-84...

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