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Sportster – Engine & Gaskets

Engine components, gaskets, seals and related parts for Harley-Davidson Sportster models.

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MCS Rocker Arm Shaft. Import – 1957–1985 XL Sportster

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

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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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£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…

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

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

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

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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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£110.71
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£109.17
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Manley Valve Spring Top Collar Set. Titanium – 1984–1999 Evo Big Twin; 1999–2004 Twin…

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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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£109.17
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£41.07
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Manley Valve Spring Top Collar Set. Steel – 1984–1999 Evo Big Twin; 1999–2004 Twin…

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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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£110.71
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£109.17
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Manley Valve Spring Top Collar Set. Titanium – 1936–1984 Big Twin

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

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Manley Valve Spring Top Collar Set. Steel – 1936–1984 Big Twin OEM style replacement precision machined steel valve spring top collars. Note: Manle...

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£41.07
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£35.63
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£32.79
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£32.79

Manley Lower Valve Spring Collar Set. +.030" – 1980–1984 Shovelhead

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Manley Lower Valve Spring Collar Set. +.030" – 1980–1984 Shovelhead Low profile for +.030" spring travel. Chromoly; black oxided. Precision re-engi...

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£32.79
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£43.32
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£39.87
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Manley Lower Valve Spring Collar Set – 1984–1999 Evo Big Twin; 1999–2004 Twin…

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Manley Lower Valve Spring Collar Set – 1984–1999 Evo Big Twin; 1999–2004 Twin… Chromoly; black oxided. Precision re-engineered to offer installatio...

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£35.63
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£32.79
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Manley Lower Valve Spring Collar Set. +.030" – 1948–1979 Big Twin +.030" Spring Travel

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Manley Lower Valve Spring Collar Set. +.030" – 1948–1979 Big Twin +.030" Spring Travel Low profile for +.030" spring travel. Chromoly; black oxided...

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£32.79
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£36.69
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£33.77
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Manley Lower Valve Spring Collar Set – 1948–1965 Panhead; 1966–1979 Shovelhead

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Manley Lower Valve Spring Collar Set – 1948–1965 Panhead; 1966–1979 Shovelhead Chromoly; black oxided finished. Precision re-engineered to offer in...

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£33.77
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£56.70
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£52.18
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£52.18

Gardner-Westcott Tappet Block Mount Kit. Acorn, Chrome – 36-E76 Big Twin. With L1976–1984 Style…

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Gardner-Westcott Tappet Block Mount Kit. Acorn, Chrome – 36-E76 Big Twin. With L1976–1984 Style… Conversion kit. 1/4-24 threaded bolts. Used to fit...

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£52.18
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£12.18
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£11.20
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Colony Hex Head Plug Oil Screen Crankcase – 1970–1980 Big Twin

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Colony Hex Head Plug Oil Screen Crankcase – 1970–1980 Big Twin Chrome. Hex head plug. Fits oil screen. Fitment 70-80 Big Twin (NU) Product Details ...

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£11.20
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£32.08
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£27.68
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Gardner-Westcott Cylinder Base Stud Set – 1930–1977 Big Twin

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Gardner-Westcott Cylinder Base Stud Set – 1930–1977 Big Twin Includes 5x 7/16-14 to 7/16-20 x 2 1/2 stud; 8 needed Fitment 30-77 Big Twin (NU) Prod...

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£27.68
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£74.88
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£71.29
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£71.29

Gardner-Westcott Crankcase Bolt Kit, Allen – 2000–2017 Softail

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Gardner-Westcott Crankcase Bolt Kit, Allen – 2000–2017 Softail Mounts crankcase halves together. Kits come complete with washers; studs and nuts wh...

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£74.88
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£74.88
£71.29
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£71.29
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£83.68
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£79.67
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£79.67

Gardner-Westcott Crankcase Bolt Kit, Hex – 2000–2017 Softail

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Gardner-Westcott Crankcase Bolt Kit, Hex – 2000–2017 Softail Mounts crankcase halves together. Kits come complete with washers; studs and nuts wher...

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£79.67
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£62.55
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£59.56
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£59.56

Gardner-Westcott Crankcase Bolt Kit, Hex – 1970–1978 Big Twin

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Gardner-Westcott Crankcase Bolt Kit, Hex – 1970–1978 Big Twin Mounts crankcase halves together. Kits come complete with washers; studs and nuts whe...

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£59.56
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£90.36
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£86.03
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£86.03

Gardner-Westcott Crankcase Bolt Kit, Acorn – 1970–1978 Big Twin

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Gardner-Westcott Crankcase Bolt Kit, Acorn – 1970–1978 Big Twin Mounts crankcase halves together. Kits come complete with washers; studs and nuts w...

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£90.36
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£90.36
£86.03
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£86.03
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Colony Early Style – 1936–1967 Big Twin OHV

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Colony Early Style – 1936–1967 Big Twin OHV Parkerized; long shoulder nut; 1/4-24 thread Fitment 36-67 Big Twin OHV (NU) Product Details Brand: C...

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£8.37
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Colony Early Style – 1936–1967 Big Twin OHV

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Colony Early Style – 1936–1967 Big Twin OHV Chrome; 1/4"-24 thread; long shoulder nut Fitment 36-67 Big Twin OHV (NU) Product Details Brand: Colo...

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£8.37
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