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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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Alto Nut. Pinion Shaft Gear – 1954–1989 Big Twin

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Alto Nut. Pinion Shaft Gear – 1954–1989 Big Twin 5/8-24 left hand threaded. Repl. 24023-54. Fitment 54-89 Big Twin (NU) Product Details Brand: Al...

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£35.88
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MCS Sprocket Shaft Bearing Assembly – 1977–2003 XL Sportster

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MCS Sprocket Shaft Bearing Assembly – 1977–2003 XL Sportster Sprocket shaft bearing assembly Fitment 77-03 XL Sportster (NU) Product Details Bran...

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£87.97
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MCS Sprocket Shaft – 77-E81 XL Sportster

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MCS Sprocket Shaft – 77-E81 XL Sportster Sprocket shaft Fitment 77-E81 XL Sportster (NU) Product Details Brand: MCS Category: MOTOR PARTS > S...

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£135.39
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£133.51

Gardner-Westcott 12-Point Head Bolt Kit. Chrome – 1992–2017 Big Twin; 1992–2022 XL…

Out of stock

Gardner-Westcott 12-Point Head Bolt Kit. Chrome – 1992–2017 Big Twin; 1992–2022 XL… Used without washers; like OEM. Fitment 92-17 Big Twin (Excl. M...

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£133.51
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£255.26
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£251.71
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£251.71

Gardner-Westcott Head Bolt Kit, 12-Point – L1985–1991 Big Twin; 1986–1991 XL…

Out of stock

Gardner-Westcott Head Bolt Kit, 12-Point – L1985–1991 Big Twin; 1986–1991 XL… Head bolt kit, 12-point Fitment L85-91 Big Twin; 86-91 XL Sportster (...

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£135.98
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£134.09
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Gardner-Westcott Head Bolt Kit, 12-Point – L1985–1991 Big Twin; 1986–1991 XL…

Out of stock

Gardner-Westcott Head Bolt Kit, 12-Point – L1985–1991 Big Twin; 1986–1991 XL… Excl. washers Fitment L85-91 Big Twin; 86-91 XL Sportster (NU) Produc...

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£134.09
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£51.81
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Gardner-Westcott Rocker Shaft Plug Set. Custom Allen Style. Chrome – 66-E71 Shovelhead; 57-E71 XL Sportster

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Gardner-Westcott Rocker Shaft Plug Set. Custom Allen Style. Chrome – 66-E71 Shovelhead; 57-E71 XL Sportster Chrome plated. Custom allen head (socke...

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£47.68
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Gardner-Westcott Rocker Shaft End Plug Set. Allen Style. Chrome – 1971–1984 Shovelhead; 1971–1985 XL…

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Gardner-Westcott Rocker Shaft End Plug Set. Allen Style. Chrome – 1971–1984 Shovelhead; 1971–1985 XL… Chrome plated. Custom allenhead (socket head)...

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Gardner-Westcott Oil Pump & Crankcase Plug Set, Allen – 1970–1980 Big Twin

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Gardner-Westcott Oil Pump & Crankcase Plug Set, Allen – 1970–1980 Big Twin 3 plug set Fitment 70-80 Big Twin (NU) Product Details Brand: Gard...

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£48.18
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Gardner-Westcott Oil Pump and Crankcase Plug Set – 1981–1999 Big Twin

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Gardner-Westcott Oil Pump and Crankcase Plug Set – 1981–1999 Big Twin Allenheads; 3-plug set Fitment 81-99 Big Twin (Excl. TC) Product Details Br...

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£81.47
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£25.39
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£25.39

MCS Buna-n, Pushrod Cover Seal. Large Lower. Rubber – 1948–1965 Panhead; 66-E79 Shovelhead:…

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MCS Buna-n, Pushrod Cover Seal. Large Lower. Rubber – 1948–1965 Panhead; 66-E79 Shovelhead:… Rubber. Upgrade replacement for large cork OEM 17955-4...

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MCS Replacement XL1200 Cast Piston Kit. Std – 1988–2003 XL1200

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MCS Replacement XL1200 Cast Piston Kit. Std – 1988–2003 XL1200 Standard 9:1CR. Perfect for a stock rebuild. These cast type pistons are well known ...

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£37.81
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Andrews EV-SC Cam .495" Lift – 1984–1999 Evo Big Twin with Supercharger

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Andrews EV-SC Cam .495" Lift – 1984–1999 Evo Big Twin with Supercharger .495" valve lift. For supercharged engines. Basically an EV27 cam with timi...

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£252.98
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£251.24
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£33.66
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MCS Drive Gear, Oil Pump. 6 Tooth – 1973–1989 Big Twin

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MCS Drive Gear, Oil Pump. 6 Tooth – 1973–1989 Big Twin On pinion shaft Fitment 73-89 Big Twin (NU) Product Details Brand: MCS Category: MOTOR PA...

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£30.64
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Andrews EV27 Cam .495" Lift – 1984–1999 Evo Big Twin

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Andrews EV27 Cam .495" Lift – 1984–1999 Evo Big Twin .495" valve lift. Bolt-in. For stock engines. Very strong; broad torque band. Will pull hard f...

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£251.24
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£71.27
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Andrews Big Twin Cam Gear. Oversize (Black) – L1977–1984 Shovel Head; 1984–1999 Evo…

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Andrews Big Twin Cam Gear. Oversize (Black) – L1977–1984 Shovel Head; 1984–1999 Evo… Black. Oversize. Crimp-on installation on the camshaft. Used t...

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£68.79
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£129.77
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S&S Pinion Gear. Undersized – 2000–2017 Softail; 1999–2017 Dyna…

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S&S Pinion Gear. Undersized – 2000–2017 Softail; 1999–2017 Dyna… For S&S gear driven cams to overcome machining variations in the stock H-D...

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£114.63
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£103.44
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Andrews Cam Driven Gear. 34T – 1999–2001 Twin Cam with Andrews…

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Andrews Cam Driven Gear. 34T – 1999–2001 Twin Cam with Andrews… With ignition trigger ring. Used with Andrews 07-17 style conversion cams only. Fit...

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£101.26
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£290.65
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Andrews Twin Cam Adj. EZ-install Aluminum Pushrod Set – 1999–2017 Twin Cam A/B

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Andrews Twin Cam Adj. EZ-install Aluminum Pushrod Set – 1999–2017 Twin Cam A/B EZ-install pushrods can be installed without removing the rocker cov...

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£290.65
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£252.98
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£251.24
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£251.24

Andrews EV72 Cam .560" Lift – 1984–1999 Evo Big Twin

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Andrews EV72 Cam .560" Lift – 1984–1999 Evo Big Twin .560" valve lift. Upgraded version of the EV7. For 92"+ street engines with a higher; 9:1 up; ...

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£252.98
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£251.24
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Andrews N Grind / .348" Lift Camshaft – 1936–1947 61"/74" Knucklehead

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Andrews N Grind / .348" Lift Camshaft – 1936–1947 61"/74" Knucklehead .348" cam lift. Bolt-in stock style replacement cam. Ground to OEM Knucklehea...

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£256.36
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£39.59
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Gardner-Westcott XL Side Cover Mount Kit, Chrome Allen – 1986–1990 XL Sportster

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Gardner-Westcott XL Side Cover Mount Kit, Chrome Allen – 1986–1990 XL Sportster XL side cover mount kit, chrome allen Fitment 86-90 XL Sportster (N...

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£39.59
£36.43
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£63.92
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Gardner-Westcott Complete Rocker Box Mount Kit. Zinc – 1984–1999 Evo Big Twin; 1986–2003 XL…

Out of stock

Gardner-Westcott Complete Rocker Box Mount Kit. Zinc – 1984–1999 Evo Big Twin; 1986–2003 XL… Zinc plated steel. This kit includes all bolts & w...

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£60.85
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Gardner-Westcott Rocker Box Top Bolt Kit. Allen, Stainless – 1999–2017 Twin Cam

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Gardner-Westcott Rocker Box Top Bolt Kit. Allen, Stainless – 1999–2017 Twin Cam Stainless steel allenhead (socket head) bolts. Includes washers. Fi...

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£29.27
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