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Softail – Engine & Gaskets

Browse engine & gaskets selected for Harley-Davidson Softail motorcycles. Current products cover engine components and gaskets, seals and service parts, depending on the specification and application. Compatibility varies, so match the stated model, year and technical details before ordering.

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£15.65 - £15.65
£15.65
£15.65 - £15.65
£15.65

MCS Valve Key Set – 1936–1947 Knucklehead; 1948–1965…

Low stock

Description OEM style replacement valve keepers. Sold in set of 8 to service one engine. Repl. 18228-36. Fitment 36-47 Knucklehead; 48-65 Panhead; ...

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£15.65 - £15.65
£15.65
£15.65 - £15.65
£15.65
£103.80 - £103.80
£103.80
£103.80 - £103.80
£103.80

MCS Sprocket Shaft, L81-E85 Big Twin – L81-E85 OEM Big Twin Flywheels without…

Low stock

Description OEM style replacement. Fits L81-85 OEM (without keyway). Sprocket shaft does not have a keyway. Taper is 6°. Shaft is 4.262" long from ...

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£103.80 - £103.80
£103.80
£103.80 - £103.80
£103.80
£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
£101.94 - £101.94
£101.94
£101.94 - £101.94
£101.94

MCS Complete L79-84 Shovel Pushrod Cover Kit. Black – L1979–1984 Shovel

Low stock

Description Satin black finish. O-ring seals type. Complete OEM reproduction style replacement pushrod cover kit with everything included for a has...

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£101.94 - £101.94
£101.94
£101.94 - £101.94
£101.94
£671.03 - £671.03
£671.03
£671.03 - £671.03
£671.03

MCS Shovelhead Rocker Box Set. Chrome – 1966–1984 Shovelhead

Low stock

Description Chrome plated cast aluminum. OEM reproduction of front and rear rockerbox. Does not include internals. Repl. 17516-77B/17550-80 (rear) ...

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£671.03 - £671.03
£671.03
£671.03 - £671.03
£671.03
£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
£26.77 - £26.77
£26.77
£26.77 - £26.77
£26.77

Colony Head Bolt Cover Kit. Acorn, Chrome – 84-E85 Evo Big Twin

Low stock

Description Fits over the OEM head bolts. Securely mounts to the head bolt with a set-screw. Fitment 84-E85 Evo Big Twin (NU) Product Details Bra...

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£26.77 - £26.77
£26.77
£26.77 - £26.77
£26.77
£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
£22.64 - £22.64
£22.64
£22.64 - £22.64
£22.64

MCS Oil Screen, OEM Style – 2000–2017 Softail

Low stock

Description 1 used. In the right side crankcase. Fitment 00-17 Softail (NU) Product Details Brand: MCS Category: MOTOR PARTS > LOWER END MISC...

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£22.64 - £22.64
£22.64
£22.64 - £22.64
£22.64
£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
£19.15 - £19.15
£19.15
£19.15 - £19.15
£19.15

MCS Sprocket Shaft Bearing Spacer Shim .118" – 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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£19.15 - £19.15
£19.15
£19.15 - £19.15
£19.15
£42.96 - £42.96
£42.96
£42.96 - £42.96
£42.96

S&S Valve Seat. Exhaust. 1.750" Od – 1966–1984 Big Twin

Low stock

Description Standard 1.750" Size Fitment 66-84 Big Twin (NU) Product Details Brand: S&S Category: MOTOR PARTS > VALVE SEATS Unit: EA Pr...

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£42.96 - £42.96
£42.96
£42.96 - £42.96
£42.96
£33.83 - £33.83
£33.83
£33.83 - £33.83
£33.83

MCS Sprocket Shaft Extension, 1/2" – 1991–2006 Softail; 1985–1994 FXR…

Low stock

Description Use with 916212 nut Fitment 91-06 Softail; 85-94 FXR; 91-05 Dyna; 85-06 FLT/Touring (NU) Product Details Brand: MCS Category: MOTOR ...

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£33.83 - £33.83
£33.83
£33.83 - £33.83
£33.83
£20.88 - £20.88
£20.88
£20.88 - £20.88
£20.88

MCS Pinion Gear Spacer – 1954–1989 Big Twin

Low stock

Description Pinion gear spacer Fitment 54-89 Big Twin (NU) Product Details Brand: MCS Category: MOTOR PARTS > PINION GEARS Unit: 5 Product ...

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£20.88 - £20.88
£20.88
£20.88 - £20.88
£20.88
£17.38 - £17.38
£17.38
£17.38 - £17.38
£17.38

MCS Plastic Breather Valve Spacers .130" – 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
£9.41 - £9.41
£9.41
£9.41 - £9.41
£9.41

MCS Thrust Washer Camshaft. .055" – 1936–1999 Big Twin

Low stock

Description Shims used to achieve correct cam end-play. Approx. dimensions: 1.062" OD; .820" ID. Fitment 36-99 Big Twin (Excl. 91-99 Evo Big Twin w...

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£9.41 - £9.41
£9.41
£9.41 - £9.41
£9.41
£13.86 - £13.86
£13.86
£13.86 - £13.86
£13.86

MCS Dowel Pin, Transmission & Crankcase – Crankcase to Crankcase (2): 1999–2017…

Low stock

Description Used between transmission to crankcase & crankcase to crankcase. OEM replacement reference 16574-99A Fitment Crankcase to crankcase...

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£13.86 - £13.86
£13.86
£13.86 - £13.86
£13.86

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