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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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Sold out
£8.65 - £8.65
£8.65
£8.65 - £8.65
£8.65

MCS Sprocket Shaft Spacer Shim. .030" – 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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£8.65 - £8.65
£8.65
£8.65 - £8.65
£8.65
Sold out
£60.13 - £60.13
£60.13
£60.13 - £60.13
£60.13

MCS Head Bolt Bridge Cover Set. Finned, Black – 1999–2006 Carbureted Twin Cam

In 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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£60.13 - £60.13
£60.13
£60.13 - £60.13
£60.13
£15.65 - £15.65
£15.65
£15.65 - £15.65
£15.65

MCS Valve Key Set – 1957–1985 XL Sportster; 1937–1948…

Low stock

Description OEM style replacement valve keepers. Sold in set of 8 to service one engine. Repl. 18228-30. Fitment 57-85 XL Sportster; 37-48 74"/80" ...

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£15.65 - £15.65
£15.65
£15.65 - £15.65
£15.65
Sold out
£29.43 - £29.43
£29.43
£29.43 - £29.43
£29.43

MCS Nut, Pinion Shaft Gear – 1993–1999 Big Twin; 1991–2022 XL…

Out of stock

Description 5/8-18 left hand threaded. Repl. 7916A. Fitment 93-99 Big Twin (Excl. Twin Cam); 91-22 XL Sportster; 08-12 XR1200 (NU) Product Details ...

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£29.43 - £29.43
£29.43
£29.43 - £29.43
£29.43
Sold out
£8.65 - £8.65
£8.65
£8.65 - £8.65
£8.65

MCS Spring, Oil Pump Relieve Valve – 1973–1999 Big Twin

Low stock

Description Spring, oil pump relieve valve Fitment 73-99 Big Twin (Excl. TC) Product Details Brand: MCS Category: MOTOR PARTS > OIL PUMP PART...

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£8.65 - £8.65
£8.65
£8.65 - £8.65
£8.65
£98.62 - £98.62
£98.62
£98.62 - £98.62
£98.62

MCS 29-85 Tappet Roller Repair Kit – 1929–1985 All H-D

Low stock

Description Complete reproduction tappet rollers with needle bearings and axles. Repl. 18534-29A. Tech tip: Tappet rollers / Cam follower rollers c...

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£98.62 - £98.62
£98.62
£98.62 - £98.62
£98.62
£53.75 - £53.75
£53.75
£53.75 - £53.75
£53.75

Sonnax Pinion Shaft Bearing. Red – 1987–1999 Big Twin

Low stock

Description Sold with the OEM color code. Replacement late style right side crankcase bearing. Note: Will fit 58-86 Big Twins when pinion shaft spa...

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£53.75 - £53.75
£53.75
£53.75 - £53.75
£53.75
£9.12 - £9.12
£9.12
£9.12 - £9.12
£9.12

MCS Flanged Bolt – 1999–2010 Twin Cam a/B

Low stock

Description 4 used. Bolt; breather assembly to lower rocker cover. Fitment 99-10 Twin Cam A/B (NU) Product Details Brand: MCS Category: MOTOR PA...

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£9.12 - £9.12
£9.12
£9.12 - £9.12
£9.12
Sold out
£54.48 - £54.48
£54.48
£54.48 - £54.48
£54.48

MCS Rocker Arm, Rear Exhaust/Front Intake – 1966–1984 Shovelhead

Out of stock

Description OEM style replacement rocker arm. Repl. 17360-83. Fitment 66-84 Shovelhead (NU) Product Details Brand: MCS Category: MOTOR PARTS >...

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£54.48 - £54.48
£54.48
£54.48 - £54.48
£54.48
Sold out
£13.27 - £13.27
£13.27
£13.27 - £13.27
£13.27

MCS Camshaft Bushing. Std. 70-99 B.t – 1970–1999 Big Twin

Low stock

Description OEM replacement reference 25581-70 Fitment 70-99 Big Twin (Excl. Twin Cam) (NU) Product Details Brand: MCS Category: MOTOR PARTS >...

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£13.27 - £13.27
£13.27
£13.27 - £13.27
£13.27
£53.75 - £53.75
£53.75
£53.75 - £53.75
£53.75

MCS 53-84 Tappet Block, Rear. Black – 1953–1965 Panhead; 1966–1984 Shovelhead

Low stock

Description Replacement for L76-84 Shovel (excl. L1982 models with special routed oil lines). Repl. 18610-66B and 18602-80A. Note: On 53-E76 engine...

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£53.75 - £53.75
£53.75
£53.75 - £53.75
£53.75
£18.97 - £18.97
£18.97
£18.97 - £18.97
£18.97

MCS Rocker Arm Bushings. 2pk – 1984–2017 Big Twin; 1986–2022 XL…

Low stock

Description 8 used in one engine. OEM style reproduction. Repl. 17429-91. Fitment 84-17 Big Twin (excl. M8); 86-22 XL Sportster; 08-12 XR1200; 91-1...

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£18.97 - £18.97
£18.97
£18.97 - £18.97
£18.97
£12.16 - £12.16
£12.16
£12.16 - £12.16
£12.16

MCS Nut, Sprocket Shaft Extension – 1991–2006 Softail; 1985–1994 FXR…

Low stock

Description Standard 1/4 inch Fitment 91-06 Softail; 85-94 FXR; 91-05 Dyna; 85-06 FLT/Touring (NU) Product Details Brand: MCS Category: MOTOR PA...

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£12.16 - £12.16
£12.16
£12.16 - £12.16
£12.16
£39.01 - £39.01
£39.01
£39.01 - £39.01
£39.01

MCS Sprocket Shaft Extension, Std – 1991–2006 Softail; 1985–1994 FXR…

In stock

Description Sprocket shaft extension, std Fitment 91-06 Softail; 85-94 FXR; 91-05 Dyna; 85-06 FLT/Touring (NU) Product Details Brand: MCS Catego...

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£39.01 - £39.01
£39.01
£39.01 - £39.01
£39.01
£17.38 - £17.38
£17.38
£17.38 - £17.38
£17.38

MCS Plastic Breather Valve Spacers .160" – 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
£39.87 - £39.87
£39.87
£39.87 - £39.87
£39.87

MCS Spacer, Sprocket Shaft – 2000–2002 Dyna; 2000 Softail

Low stock

Description Spacer, sprocket shaft Fitment 00-02 Dyna; 2000 Softail (NU) (Excl. FLT) Product Details Brand: MCS Category: MOTOR PARTS > SPROC...

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£39.87 - £39.87
£39.87
£39.87 - £39.87
£39.87
£6.82 - £6.82
£6.82
£6.82 - £6.82
£6.82

Alto Nut. Pinion Shaft Gear – 1990–1992 Big Twin

Low stock

Description 5/8-24. left hand threaded. Repl. 24022-90. Fitment 90-92 Big Twin (NU) Product Details Brand: Alto Category: MOTOR PARTS > PINIO...

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£6.82 - £6.82
£6.82
£6.82 - £6.82
£6.82
Sold out
£54.03 - £54.03
£54.03
£54.03 - £54.03
£54.03

Ert Pro-Just Spring Kit, Oil Pump – 1981–1999 Big Twin

Out of stock

Description Aluminum; with spring; Allows stepless adjustment of oil pressure Fitment 81-99 Big Twin (NU) (Excl. TC) Product Details Brand: ERT ...

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£54.03 - £54.03
£54.03
£54.03 - £54.03
£54.03
Sold out
£49.74 - £49.74
£49.74
£49.74 - £49.74
£49.74

MCS Crankpin 41-E84 B.t. Std – 41-E81 Big Twin

Low stock

Description Standard diameter. Replacement for OEM 23961-41 (348-41). Fitment 41-E81 Big Twin (Excl. 61" Knuckle; 61" Panhead & all Flatheads) ...

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£49.74 - £49.74
£49.74
£49.74 - £49.74
£49.74
£36.41 - £36.41
£36.41
£36.41 - £36.41
£36.41

MCS Camshaft Spacers, .100" – 2007–2026 Softail; 2006–2017 Dyna…

Low stock

Description Use as required. OEM replacement reference 25729-06 Fitment 07-26 Softail; 06-17 (NU) Dyna; 07-26 FLT/Touring (excl. 23-25 121" VVT); 0...

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£36.41 - £36.41
£36.41
£36.41 - £36.41
£36.41
£19.15 - £19.15
£19.15
£19.15 - £19.15
£19.15

MCS Rocker Shaft End Nut Set, Black Plastic Inserts – 1966–1984 Shovelhead; 1957–1985 XL…

Low stock

Description Chrome plated. With black plastic inserts; OEM has red plastic inserts. Otherwise OEM reproduction; apart from the color. Used on the l...

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£19.15 - £19.15
£19.15
£19.15 - £19.15
£19.15
£37.35 - £37.35
£37.35
£37.35 - £37.35
£37.35

MCS Replacement 1200cc B.t. Cast Piston. +.010" – 41-E78 1200cc/74" Knuckle; Pan; Shovel

Low stock

Description Standard 8:1 compression ratio. Perfect for a stock rebuild. Piston includes the wristpin and wristpin clips. Note: Piston rings must b...

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£37.35 - £37.35
£37.35
£37.35 - £37.35
£37.35
£6.68 - £6.68
£6.68
£6.68 - £6.68
£6.68

MCS Sprocket Shaft Nut – 1972–1986 Big Twin

Low stock

Description 1-1/8-16 threaded. OEM replacement reference 24017-72; 24017-80. Fitment 72-86 Big Twin (NU) Product Details Brand: MCS Category: MO...

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£6.68 - £6.68
£6.68
£6.68 - £6.68
£6.68
£12.16 - £12.16
£12.16
£12.16 - £12.16
£12.16

MCS Breather Valve Shim, .110" – 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

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