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Softail – Gaskets & Kits

Browse gaskets & kits selected for Harley-Davidson Softail motorcycles. Available items span 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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£42.21 - £42.21
£42.21
£42.91
£42.91 - £42.91
£42.91

James Gaskets Cylinder Base. Rcm .022" – 1984–1999 Big Twin; 1986–2022 XL…

Low stock

Description .022" thick RCM (Rubber Covered Metal). Final crush .020". With silicone bead. Type ''B''. James'' RCM gaskets consists of a .020" thic...

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£42.21 - £42.21
£42.21
£42.91
£42.91 - £42.91
£42.91
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£66.02
£66.02 - £66.02
£66.02
£63.12
£63.12 - £63.12
£63.12

Cometic Rocker Cover Gasket Kit. M8. Standard – 2018–2025 Softail; 2017–2025…

Low stock

Description Complete with top and bottom rocker cover gaskets and a complete pushrod cover seal kit. OEM replacement reference 25700731 Fitment 18-...

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£66.02
£66.02 - £66.02
£66.02
£63.12
£63.12 - £63.12
£63.12
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£10.40
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£10.40
£9.61
£9.61 - £9.61
£9.61

Cometic O-Ring Oil Pump. Front – 2018–2025 Softail; 2017–2025…

Out of stock

Description Used between oil pump and camshaft support plate. OEM replacement reference 11900103. Fitment 18-25 Softail; 17-25 FLT/Touring; 17-25 T...

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£10.40
£10.40 - £10.40
£10.40
£9.61
£9.61 - £9.61
£9.61
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£42.21 - £42.21
£42.21
£42.91
£42.91 - £42.91
£42.91

James Gaskets Gasket Set, Cylinder Base. 3-5/8" Bore. .020" Rcm – 1963–1984 Big Twin with 3-5/8" Big Bore…

Low stock

Description 3-5/8" big bore. .022" RCM (Rubber Coated Metal). Final crush .020". RCM (Rubber Coated Metal) gaskets consists of a .020" thick stainl...

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£42.21 - £42.21
£42.21
£42.91
£42.91 - £42.91
£42.91
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£10.40
£10.40 - £10.40
£10.40
£9.61
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£9.61

Cometic Gasket Engine to Transmission – 2018–2026 Softail; 2017–2026…

Out of stock

Description Engine to transmission interface seal. OEM replacement reference 24400215; 24400215A Fitment 18-26 Softail; 17-26 FLT/Touring; 21-26 Tr...

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£10.40
£10.40 - £10.40
£10.40
£9.61
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£9.61
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£13.05
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£13.05
£12.48
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£12.48

Cometic O-Ring Oil Pump Check Valve/Plug – 2014–2025 FLT/Touring: Twin Cooled Plug.…

Out of stock

Description On right front outside of crankcase (Twin Cooled plug). Oil pump (check valve). OEM replacement reference 11900010 Fitment 14-25 FLT/To...

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£13.05
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£13.05
£12.48
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£12.48
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£192.43
£192.43 - £192.43
£192.43
£190.55
£190.55 - £190.55
£190.55

Cometic Est Top End Gasket Kit. M8 4.075" Bore – 2018–2024 Softail; 2017–2025…

Low stock

Description With MLS (Multi-Layer-Steel) .040" thick head gaskets. The SLS (Single-Layer-Steel) cylinder base gaskets and SLS rocker cover gaskets ...

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£192.43
£192.43 - £192.43
£192.43
£190.55
£190.55 - £190.55
£190.55
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£17.40
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£17.40
£16.64
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£16.64

Cometic O-Ring Coolant Manifold – 2018–2024 Softail; 2017–2025…

Out of stock

Description Fits cooling line assembly on both Twin Cooled & Air Cooled M8. 4 seals used on one engine. OEM replacement reference 11900090. Fit...

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£17.40
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£17.40
£16.64
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£16.64
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£25.00
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£25.00
£23.90
£23.90 - £23.90
£23.90

Cometic Throttle Body to Air Cleaner Housing Seal – 2018–2024 Softail; 2017–2024…

Low stock

Description 107 models with round or 114" models with wedge (scoop) style air cleaner. OEM replacement reference 29000108 Fitment 18-24 (NU) Softai...

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£25.00
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£25.00
£23.90
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£23.90
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£23.01
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£23.01
£22.00
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£22.00

Cometic Valve Stem Seal Set (8pk) – 2018–2025 Softail; 2017–2025…

Low stock

Description Viton rubber. OEM replacement reference 18100044. Fitment 18-25 Softail; 17-25 FLT/Touring; 17-25 Trikes Product Details Brand: Comet...

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£23.01
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£23.01
£22.00
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£22.00
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£23.23
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£23.23
£22.21
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£22.21

Cometic Gasket Rocker Cover Lower – 2018–2025 Softail; 2017–2025…

Low stock

Description Rubber. OEM replacement reference 25700425 Fitment 18-25 Softail; 17-25 FLT/Touring; 17-25 Trikes Product Details Brand: Cometic Cat...

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£23.23
£23.23 - £23.23
£23.23
£22.21
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£22.21
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£192.43
£192.43 - £192.43
£192.43
£190.55
£190.55 - £190.55
£190.55

Cometic Est Top End Gasket Kit. M8 3.937" Bore – 2018–2024 Softail; 2017–2023…

Out of stock

Description EST (Extreme Sealing Technology). With MLS (Multi-Layer-Steel) .040" thick head gaskets. The SLS (Single-Layer-Steel) cylinder base gas...

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£192.43
£192.43 - £192.43
£192.43
£190.55
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£190.55
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£27.88
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£27.88
£26.66
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£26.66

Cometic Inner Primary Housing to Crankcase. Plain – 2018–2025 Softail; 2017–2025…

Low stock

Description Plain color. Molded rubber seal on a metal base. OEM replacement reference 25700455 (chrome) and 25700679 (black) Fitment 18-25 Softail...

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£27.88
£27.88 - £27.88
£27.88
£26.66
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£26.66
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£19.73
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£19.73
£18.87
£18.87 - £18.87
£18.87

Cometic Manifold Intake Seal. Front/Rear. Viton – 2018–2024 Softail; 2017–2025…

Out of stock

Description Viton rubber. Used between manifold and cylinder head. OEM replacement reference 27300087 Fitment 18-24 Softail; 17-25 FLT/Touring (exc...

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£19.73
£19.73 - £19.73
£19.73
£18.87
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£18.87
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£11.05
£11.05 - £11.05
£11.05
£10.56
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£10.56

Cometic O-Ring M8 Breather Assembly – 2017–2025 Gen1 M8 Models: 2017–2025 M8…

Out of stock

Description Viton rubber. OEM replacement reference 11900116 Fitment 17-25 Gen1 M8 models: 17-25 M8 (excl. 2025 Softail; 23-25 FLTRXSE; 24-25 FLTRX...

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£11.05
£11.05 - £11.05
£11.05
£10.56
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£10.56
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£23.01
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£23.01
£22.00
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£22.00

Cometic Sprocket Shaft Oil Seals – 2018–2026 Softail; 2017–2026…

Out of stock

Description OEM replacement reference 11000134. Fitment 18-26 Softail; 17-26 FLT/Touring; 17-26 Trikes Product Details Brand: Cometic Category: ...

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£23.01
£23.01 - £23.01
£23.01
£22.00
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£22.00
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£27.71
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£27.71
£26.49
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£26.49

Cometic Cylinder Base Gasket Set. Rcs 4.320" Big Bore – 2018–2024 Softail; 2017–2025…

Out of stock

Description Front & rear gasket for one engine. .014" thick RCS (Rubber Coated Steel); an embossed steel core with a .001" thick coating of hea...

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£27.71
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£27.71
£26.49
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£26.49
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£13.05
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£13.05
£12.48
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£12.48

Cometic Fuel Injector O-Ring. Orange – 2018–2024 Softail; 2017–2025 Touring…

Low stock

Description Orange. Viton rubber. Replaces the orange OEM injector O-ring. This o-ring is not separately available from OEM. Note: See 568492 for t...

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£13.05
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£13.05
£12.48
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£12.48
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£58.94
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£58.94
£56.36
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£56.36

Cometic Throttle Body to Manifold Gasket – 2018–2024 Softail; 2017–2025…

Low stock

Description Induction module gasket. For earlier GEN1 M8 models with round intake ports. OEM replacement reference 27300082. Fitment 18-24 (NU) Sof...

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£58.94
£58.94 - £58.94
£58.94
£56.36
£56.36 - £56.36
£56.36
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£32.44
£32.44 - £32.44
£32.44
£31.01
£31.01 - £31.01
£31.01

Cometic Cam Gear Change Gasket Kit – 2018–2025 Softail; 2017–2025…

Out of stock

Description Camshaft service kit; complete with all gaskets and seals you need when the camshaft is replaced. Includes exhaust gaskets; a cam cover...

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£32.44
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£32.44
£31.01
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£31.01
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£22.05
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£22.05
£21.09
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£21.09

Cometic Gasket Upper Rocker Cover. .020" Rcs – 2018–2025 Softail; 2017–2025…

Low stock

Description .020" RCS (Rubber Coated Steel). OEM replacement reference 25700372; 25700372B; 25700372C. A gasket made from an embossed steel core wi...

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£22.05
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£22.05
£21.09
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£21.09
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£6.09
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£6.09
£5.63
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£5.63

Cometic Induction Module / Throttle Body O-Ring Kit – 2018–2024 Softail; 2017–2024…

Out of stock

Description OEM replacement reference 91800058 hardware kit Fitment 18-24 Softail; 17-24 FLT/Touring; 17-24 Trikes Product Details Brand: Cometic...

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£6.09
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£6.09
£5.63
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£5.63
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£3.81
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£3.81
£3.41
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£3.41

Cometic Piston Oiler Jet Gasket – 2018–2025 Softail; 2017–2025…

Low stock

Description .032" AFM. Used between piston cooling jet and crankcase. Fits front & rear. Replacement reference 25700433; 25700433A. Cometic''s ...

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£3.81
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£3.81
£3.41
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£3.41
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£3.07
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£3.07
£2.74
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£2.74

Cometic Throttle Body to Air Cleaner Housing Gasket. Fibre – 2018–2024 114"/117" Softail; 2017–2025…

Low stock

Description .031" thick Fiber. Fits 114"/117" models with oval air cleaner. OEM replacement reference 29000149. Fiber is a premium hi-temperature; ...

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£3.07
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£3.07
£2.74
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£2.74
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