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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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Cometic Gasket Transmission Top Cover. .031" Fiber – L1979–1986 4-Speed Big Twin

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Cometic Gasket Transmission Top Cover. .031" Fiber – L1979–1986 4-Speed Big Twin .031" Fiber. Fits transmissions with rotary top cover. OEM replace...

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£11.28
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Cometic Gasket Transmission Top Cover. Fiber – 36-E79 Big Twin with Ratchet Top…

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Cometic Gasket Transmission Top Cover. Fiber – 36-E79 Big Twin with Ratchet Top… Fiber. Fits ratchet top type transmission. OEM replacement referen...

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Cometic Gasket Transmission Shifter Adapter Plate. Fiber – 52-E79 Big Twin with Foot Shift

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Cometic Gasket Transmission Shifter Adapter Plate. Fiber – 52-E79 Big Twin with Foot Shift .020" fiber. Fits with ratchet top type transmissions. O...

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£16.95
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£16.14
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£16.14

Cometic. Gasket Transmission Shifter Cover. Fiber – 52-E79 Big Twin with Foot Shift

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Cometic. Gasket Transmission Shifter Cover. Fiber – 52-E79 Big Twin with Foot Shift Fiber. OEM replacement reference 34552-52. Cometic''s fiber gas...

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£16.95
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£16.14
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£18.82
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£17.92
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£17.92

Cometic Gasket Transmission End Cover. Fiber – 1936–1986 4-Speed Big Twin

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Cometic Gasket Transmission End Cover. Fiber – 1936–1986 4-Speed Big Twin Fiber. OEM replacement reference 33295-36 / 2132-36. Cometic''s fiber gas...

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£17.92
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£17.92
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£9.69
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£8.92
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£8.92

Cometic Gasket Transmission Shifter Shaft Cover. Fiber – L1979–1986 4-Speed Big Twin

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Cometic Gasket Transmission Shifter Shaft Cover. Fiber – L1979–1986 4-Speed Big Twin .031" fiber. Fits with rotary top transmissions. OEM replaceme...

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£8.92
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£52.56
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£50.04
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£50.04

Cometic Gasket Transmission Oil Pan. .031" Fiber – 1993–1998 FLT/Touring

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Cometic Gasket Transmission Oil Pan. .031" Fiber – 1993–1998 FLT/Touring .031" fiber. OEM replacement reference 26077-93. Cometic''s fiber gaskets ...

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£50.04
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£48.29
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£45.97
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£45.97

Cometic Gasket Transmission Oil Pan. .031" Fiber – 1991–1998 Dyna

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Cometic Gasket Transmission Oil Pan. .031" Fiber – 1991–1998 Dyna .031" fiber. OEM replacement reference 26072-90A. Cometic''s fiber gaskets are ma...

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£45.97
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Cometic Seal Washer Transm. Drain Plug / Oil Screen Plug – 1941–1986 Big Twin; 1952–1976 K; XL…

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Cometic Seal Washer Transm. Drain Plug / Oil Screen Plug – 1941–1986 Big Twin; 1952–1976 K; XL… Flat seal washer. For 1/2" (12.7mm) transmission dr...

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£13.20
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£8.01
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Cometic Transm. Dipstick Cover. Lower – 1991–1998 Dyna

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Cometic Transm. Dipstick Cover. Lower – 1991–1998 Dyna OEM replacement reference 62672-90. Fitment 91-98 Dyna (NU) Product Details Brand: Cometic...

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£34.73
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£34.73
£33.06
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£33.06

Cometic Oil Seal Transmission Mainshaft – 1982–1986 4-Speed Big Twin

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Cometic Oil Seal Transmission Mainshaft – 1982–1986 4-Speed Big Twin Rubber OD. OEM replacement reference 37741-82. Fitment 82-86 4-speed Big Twin ...

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£33.06
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£30.80
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£30.80
£29.32
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£29.32

Cometic Oil Seal Mainshaft / Clutch Hub. Double Lip – Transmission Mainshaft: 1980–1981 FL…

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Cometic Oil Seal Mainshaft / Clutch Hub. Double Lip – Transmission Mainshaft: 1980–1981 FL… Metal OD. OEM replacement reference 37741-67. Fitment T...

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£29.32
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£3.27
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£2.91
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£2.91

Cometic Transm. Shifter Shaft / Clutch Release – Shifter: 2006–2013 Dyna; 2007–2013…

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Cometic Transm. Shifter Shaft / Clutch Release – Shifter: 2006–2013 Dyna; 2007–2013… 1 used behind shifter lever on transmission. OEM replacement r...

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£3.27
£2.91
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£2.91
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£20.39
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£20.39
£19.41
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£19.41

Cometic Seal Washer Transmission Fill Plug – 1980–1986 5-Speed Big Twin

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Cometic Seal Washer Transmission Fill Plug – 1980–1986 5-Speed Big Twin White nylon. Transmission oil dipstick / transmission filler plug. OEM repl...

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£20.39
£19.41
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£19.41
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£9.69
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£8.92
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Cometic Cork Washer Transmission Mainshaft – 41-E77 OHV Big Twin; 1936–1948 74"/80"…

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Cometic Cork Washer Transmission Mainshaft – 41-E77 OHV Big Twin; 1936–1948 74"/80"… Cork washer used in combination with the maindrive 35230-39 oi...

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£8.92
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£8.92
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£24.58
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£24.58
£23.40
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£23.40

Cometic Oil Seal Transmission Mainshaft. Single Lip – 1941–1979 FL.; 71-E79 FX

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Cometic Oil Seal Transmission Mainshaft. Single Lip – 1941–1979 FL.; 71-E79 FX Metal OD. OEM replacement reference 35230-39. Note: Does not include...

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£24.58
£23.40
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£23.40
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£7.37

Cometic Oil Seal Shifter Fork Shaft – L1980–1986 4-Speed Big Twin

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Cometic Oil Seal Shifter Fork Shaft – L1980–1986 4-Speed Big Twin Round o-ring style. OEM replacement reference 34036-80. Note: This late 80-86 sty...

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Cometic O-ring Shifter Fork Shaft. Flat – 37-E80 Big Twin; 1938–1973 45" Flathead

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Cometic O-ring Shifter Fork Shaft. Flat – 37-E80 Big Twin; 1938–1973 45" Flathead Flat O-ring style. OEM replacement reference 34036-36; 2245-36A. ...

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£13.86
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£13.20
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£13.20

Cometic Kickstart Shaft – 1952–1979 K; XL Sportster; L1937–1986…

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Cometic Kickstart Shaft – 1952–1979 K; XL Sportster; L1937–1986… Used between the bushings of the kickstart shaft. OEM replacement reference 33076-...

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£13.20
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£10.23
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£10.23
£9.42
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£9.42

Cometic Seal Washer Neutral Switch. Nylon – 1980–1997 5-Speed Big Twin; 1986–1999 XL…

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Cometic Seal Washer Neutral Switch. Nylon – 1980–1997 5-Speed Big Twin; 1986–1999 XL… White nylon washer for the neutral indicator switch on the tr...

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£9.42
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£9.42
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£8.01
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Cometic Transmission Mainshaft Oil Seal – L1994–2006 5-Speed Big Twin; 1995–2005…

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Cometic Transmission Mainshaft Oil Seal – L1994–2006 5-Speed Big Twin; 1995–2005… OEM replacement reference 12067A; 12067B. Fitment L94-06 5-speed ...

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£6.44
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£5.92
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£5.92

Cometic Oil Seal Transmission Mainshaft – L84-E94 5-Speed Big Twin; 1991–1994 XL…

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Cometic Oil Seal Transmission Mainshaft – L84-E94 5-Speed Big Twin; 1991–1994 XL… Includes 12050 mainshaft bearing oil seal. OEM replacement refere...

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£5.92
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£13.86
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£13.20
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£13.20

Cometic Shifter Shaft Oil Seal. Rubber OD – 1980–2006 5-Speed Big Twin

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Cometic Shifter Shaft Oil Seal. Rubber OD – 1980–2006 5-Speed Big Twin Rubber Outside Diameter. OEM replacement reference 12045. Note: See 962016 J...

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£9.69
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£8.92
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£8.92

Cometic Oil Seal Transmission Mainshaft. Single Lip – 80-E84 FLT/Touring; FXR

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Cometic Oil Seal Transmission Mainshaft. Single Lip – 80-E84 FLT/Touring; FXR Metal OD. OEM replacement reference 12044A.. For 5-speed models Fitme...

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