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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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£9.72 - £9.72
£9.72
£9.72 - £9.72
£9.72

MCS Feed Gear, Driven. Oil Pump – 1968–1999 Big Twin

Low stock

Description Feed gear, driven. oil pump Fitment 68-99 Big Twin (NU) (Excl. TC) Product Details Brand: MCS Category: MOTOR PARTS > OIL PUMPS G...

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£9.72 - £9.72
£9.72
£9.72 - £9.72
£9.72
£5.16 - £5.16
£5.16
£5.16 - £5.16
£5.16

MCS Sprocket Shaft Bearing Spacer Shim .104" – 1969–2002 Big Twin; Twin Cam B

Low stock

Description Used to set correct pre-load onto sprocket shaft bearings. Approx. dimensions: 1.265" ID; 1.530" OD Fitment 69-02 Big Twin; Twin Cam B ...

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£5.16 - £5.16
£5.16
£5.16 - £5.16
£5.16
£19.94 - £19.94
£19.94
£19.94 - £19.94
£19.94

MCS Inner Pushrod Cover Tube – 1999–2017 Twin Cam; 2017–2026 M8

Low stock

Description Zinc plated steel. 4 used. OEM style reproduction. Inner (upper) pushrod cover tube that fit behind the clip type pushrod retainer. OEM...

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£19.94 - £19.94
£19.94
£19.94 - £19.94
£19.94
£83.04 - £83.04
£83.04
£83.04 - £83.04
£83.04

MCS Bushing/Bearing Kit, Cam & Gear Shaft 93-99 Evo B.t – 1993–1999 Evo Big Twin

Low stock

Description Complete kit to set your cam up right; without missing anything. Kit includes following OEM part numbers: 2x 275 gear cover bushing pin...

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£83.04 - £83.04
£83.04
£83.04 - £83.04
£83.04
£17.38 - £17.38
£17.38
£17.38 - £17.38
£17.38

MCS Plastic Breather Valve Spacers .135" – L1977–1999 Big Twin

Low stock

Description Use with plastic breather valves only. Large hole. Note: Steel breathers require steel breather valve spacers. Plastic breathers requir...

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£17.38 - £17.38
£17.38
£17.38 - £17.38
£17.38
£8.65 - £8.65
£8.65
£8.65 - £8.65
£8.65

MCS Dowel Pin Transmission – 1989–2005 Softail; Dyna; 1989–2006…

Low stock

Description 1 used. Transmission to primary housing. .3075" thick x 1.001" long. OEM replacement reference 337 Fitment 89-05 Softail; Dyna; 89-06 F...

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£8.65 - £8.65
£8.65
£8.65 - £8.65
£8.65
£17.38 - £17.38
£17.38
£17.38 - £17.38
£17.38

MCS Breather Valve Shim, .120" – L1977–1999 Big Twin

Low stock

Description Use with steel breather valves only. Large hole. Used to set correct end play. Note: Steel breathers require steel breather valve space...

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£17.38 - £17.38
£17.38
£17.38 - £17.38
£17.38
£14.04 - £14.04
£14.04
£14.04 - £14.04
£14.04

MCS Inner Pushrod Cover Tube Set. Zinc – 48-E79 Big Twin; 54-E79 XL Sportster

Low stock

Description Zinc plated steel. For use with cork style seals. OEM style reproduction. Inner (upper) pushrod cover tubes that fit behind the clip ty...

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£14.04 - £14.04
£14.04
£14.04 - £14.04
£14.04
£8.65 - £8.65
£8.65
£8.65 - £8.65
£8.65

MCS Spacer Cam Drive Gear .365" – 1999 Twin Cam

Low stock

Description Use as required Fitment 1999 Twin Cam (NU) Product Details Brand: MCS Category: MOTOR PARTS > CAM DRIVE GEAR SPACERS Unit: 5 Pr...

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£8.65 - £8.65
£8.65
£8.65 - £8.65
£8.65
£5.16 - £5.16
£5.16
£5.16 - £5.16
£5.16

MCS Sprocket Shaft Bearing Spacer Shim .092" – 1969–2002 Big Twin; Twin Cam B

Low stock

Description Used to set correct pre-load onto sprocket shaft bearings. Approx. dimensions: 1.265" ID; 1.530" OD Fitment 69-02 Big Twin; Twin Cam B ...

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£5.16 - £5.16
£5.16
£5.16 - £5.16
£5.16
Sold out
£12.59 - £12.59
£12.59
£12.59 - £12.59
£12.59

MCS Sprocket Shaft Spacer Shim. .090" – 1970–2002 Big Twin

Out of stock

Description Used to shim-out primary belt pulley or the OEM shaft extension to line-out motor sprocket with clutch hub. Compatible with Timken styl...

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£12.59 - £12.59
£12.59
£12.59 - £12.59
£12.59
Sold out
£10.02 - £10.02
£10.02
£10.02 - £10.02
£10.02

MCS Return Gear, Driven. Oil Pump – 1968–1999 Big Twin

Low stock

Description Return gear, driven. oil pump Fitment 68-99 Big Twin (Excl. TC) Product Details Brand: MCS Category: MOTOR PARTS > OIL PUMPS GEAR...

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£10.02 - £10.02
£10.02
£10.02 - £10.02
£10.02
£27.71 - £27.71
£27.71
£27.71 - £27.71
£27.71

MCS Plastic Breather Valve Spacer Set, .130" to .165" – L1977–1999 Big Twin

Low stock

Description Plastic spacer set; 8-pk. Incl. .130"; .135"; .140"; .145"; .150"; .155"; .160" and .165" sized spacers. Use with plastic breather valv...

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£27.71 - £27.71
£27.71
£27.71 - £27.71
£27.71
£5.16 - £5.16
£5.16
£5.16 - £5.16
£5.16

MCS Sprocket Shaft Bearing Spacer Shim .096" – 1969–2002 Big Twin; Twin Cam B

Low stock

Description Used to set correct pre-load onto sprocket shaft bearings. Approx. dimensions: 1.265" ID; 1.530" OD Fitment 69-02 Big Twin; Twin Cam B ...

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£5.16 - £5.16
£5.16
£5.16 - £5.16
£5.16
£54.03 - £54.03
£54.03
£54.03 - £54.03
£54.03

MCS Head Bolt Bridge Cover Set. Finned, Silver – 1999–2017 Fuel Injected Twin Cam

Low stock

Description Aluminum construction. Slip-fit installation around the spark plug. These head bolt covers are designed to bridge the large and empty g...

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£54.03 - £54.03
£54.03
£54.03 - £54.03
£54.03
£12.16 - £12.16
£12.16
£12.16 - £12.16
£12.16

MCS Breather Valve Shim, .125" – L1977–1999 Big Twin

Low stock

Description Use with steel breather valves only. Large hole. Used to set correct end play. Note: Steel breathers require steel breather valve space...

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£12.16 - £12.16
£12.16
£12.16 - £12.16
£12.16
£17.38 - £17.38
£17.38
£17.38 - £17.38
£17.38

MCS Sprocket Shaft Spacer Shim. .060" – 1970–2002 Big Twin

Low stock

Description Used to shim-out primary belt pulley or the OEM shaft extension to line-out motor sprocket with clutch hub. Compatible with Timken styl...

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£17.38 - £17.38
£17.38
£17.38 - £17.38
£17.38
£27.38 - £27.38
£27.38
£27.38 - £27.38
£27.38

MCS Spring Cover Set, Pushrod. Skull – 1936–2025 Big Twin; 1957–1990 XL…

Low stock

Description Chrome plated steel. Direct replacement for the OEM spring cover in an unmistakeable Skull styling. Repl. 17945-36B. Fitment 36-25 Big ...

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£27.38 - £27.38
£27.38
£27.38 - £27.38
£27.38
£596.74 - £596.74
£596.74
£596.74 - £596.74
£596.74

MCS Evo Rocker Covers Set, Custom Style. Chrome – 1984–1999 Evo Big Twin

Low stock

Description Die-cast custom aluminum rocker box set with a chrome plated finish. The chrome plated center rocker arm carrier is precision machined ...

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£596.74 - £596.74
£596.74
£596.74 - £596.74
£596.74
£23.24 - £23.24
£23.24
£23.24 - £23.24
£23.24

MCS Oil Pump Cover, Chrome – 1992–1999 Evo Big Twin with OEM Bottom…

Low stock

Description Chrome plated stamped steel oil pump cover for a cleaner; smoother look in the oil pump area. Fitment 92-99 Evo Big Twin with OEM botto...

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£23.24 - £23.24
£23.24
£23.24 - £23.24
£23.24
£7.83 - £7.83
£7.83
£7.83 - £7.83
£7.83

MCS Breather Tube – 1993–1999 Softail; 1993–1998 Dyna…

Low stock

Description Rubber; stock replacement for stock air cleaners Fitment 93-99 Softail; 93-98 Dyna; 93-98 FLT/Touring; 95-03 XL Sportster (NU) Product ...

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£7.83 - £7.83
£7.83
£7.83 - £7.83
£7.83
£36.78 - £36.78
£36.78
£36.78 - £36.78
£36.78

MCS Replacement Evo B.t. Cast Piston. Std – 1984–1999 1340cc Evo Big Twin

Low stock

Description Standard 8.5:1CR. Perfect for a stock rebuild. These cast type pistons are well known for their low expansion rate. They have a substan...

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£36.78 - £36.78
£36.78
£36.78 - £36.78
£36.78
£52.96 - £52.96
£52.96
£52.96 - £52.96
£52.96

MCS Oil Pump Cover, Custom. Chrome – 1968–1991 Big Twin with OEM Oil Pump

Low stock

Description Chrome plated aluminum. No chain lubrication. Smooth clean looks in open belt drive or other applications where the chain oiler is no l...

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£52.96 - £52.96
£52.96
£52.96 - £52.96
£52.96
£8.90 - £8.90
£8.90
£8.90 - £8.90
£8.90

S&S Cylinder Head / Cylinder Base – 1999–2017 Twin Cam; 2017 M8

Low stock

Description Fits S&S & OEM cylinders & heads. OEM replacement reference 16595-99A. Fitment 99-17 Twin Cam; 2017 M8 Product Details Br...

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£8.90 - £8.90
£8.90
£8.90 - £8.90
£8.90

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