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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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£27.23
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Colony Head Bolt Cover Kit. Cap Style, Chrome – 84-E85 Evo Big Twin

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Colony Head Bolt Cover Kit. Cap Style, Chrome – 84-E85 Evo Big Twin Fits over the OEM head bolts. Securely mounts to the head bolt with a set-screw...

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£39.03
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Colony Front Motor Mount Kits – 1991–2017 Dyna

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Colony Front Motor Mount Kits – 1991–2017 Dyna Chrome acorn Fitment 91-17 Dyna (NU) Product Details Brand: Colony Category: MOTOR PARTS > MOT...

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£18.75
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Colony Motor Mount Bolt Kit. Acorn. Upper – 1936–1984 Big Twin

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Colony Motor Mount Bolt Kit. Acorn. Upper – 1936–1984 Big Twin Used to mount top engine mount to engine and to the frame tab. With custom chrome pl...

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£18.75
£18.35
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£30.53
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£29.88
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Colony Motor Mount Bolt Kit. Acorn. Lower – 1936–1984 Big Twin

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Colony Motor Mount Bolt Kit. Acorn. Lower – 1936–1984 Big Twin Used to mount engine case to frame. With custom chrome plated Acorn nuts.Note: See 9...

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£29.88
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£26.37
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Colony Tappet Block Mount Kit. Acorn, Chrome – 36-E76 Big Twin. With L1976–1984 Style…

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Colony Tappet Block Mount Kit. Acorn, Chrome – 36-E76 Big Twin. With L1976–1984 Style… Conversion kit. 1/4-24 threaded bolts. Used to fit L76-84 ta...

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£24.62
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£24.09
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Colony Tappet Block Mount Kit. Acorn, Chrome – L1976–1999 Big Twin

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Colony Tappet Block Mount Kit. Acorn, Chrome – L1976–1999 Big Twin Colony, tappet block mount kit. Acorn, chrome Fitment L76-99 Big Twin (NU) (Excl...

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£63.36
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£58.00
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£58.00

Colony Head Bolt Kit – 1940–1947 KNUCKLEHEAD

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Colony Head Bolt Kit – 1940–1947 KNUCKLEHEAD Acorn style Fitment 40-47 KNUCKLEHEAD (NU) Product Details Brand: Colony Category: MOTOR PARTS >...

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£58.00
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£63.36
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Colony Head Bolt Kit – 1936–1939 KNUCKLEHEAD

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Colony Head Bolt Kit – 1936–1939 KNUCKLEHEAD Acorn style Fitment 36-39 KNUCKLEHEAD (NU) Product Details Brand: Colony Category: MOTOR PARTS >...

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Colony Head Bolt Kit – 1948–1983 Big Twin

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Colony Head Bolt Kit – 1948–1983 Big Twin Acorn style Fitment 48-83 (NU) Big Twin Product Details Brand: Colony Category: MOTOR PARTS > HEAD ...

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£164.78
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Gardner-Westcott Head Bolt Kit – 1940–1947 74" (1200CC) KNUCKLE

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Gardner-Westcott Head Bolt Kit – 1940–1947 74" (1200CC) KNUCKLE Chrome allenhead; incl. washers Fitment 40-47 74" (1200CC) KNUCKLE (NU) Product Det...

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£162.49
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£86.99
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Gardner-Westcott Crankcase Bolt Kit, Allen – 2004–2022 XL Sportster

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Gardner-Westcott Crankcase Bolt Kit, Allen – 2004–2022 XL Sportster Mounts crankcase halves together. Kits come complete with washers; studs and nu...

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£29.96
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Jims Relief Valve Oil Pump – L1982–2017 Twin Cam; L2017–2025 M8…

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Jims Relief Valve Oil Pump – L1982–2017 Twin Cam; L2017–2025 M8… Fits OEM oil pumps; S&S (HVHP) oil pumps & S&S Twin Cam oil pump. OEM ...

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£5.19
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Jims Spring, Oil Pump Check Valve – 1981–1999 Big Twin

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Jims Spring, Oil Pump Check Valve – 1981–1999 Big Twin OEM replacement reference 26262-80. Fitment 81-99 Big Twin (Excl. Twin Cam) (NU) Product Det...

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£4.77
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£7.68
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£7.68
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Jims Spring Oil Pump Relief Valve – 1973–1999 Big Twin

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Jims Spring Oil Pump Relief Valve – 1973–1999 Big Twin Jims, spring oil pump relief valve Fitment 73-99 Big Twin (NU) (Excl. TC) Product Details ...

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£7.06
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£15.00
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£13.78
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Jims Pinion Gear Spacer – 1954–1989 Big Twin

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Jims Pinion Gear Spacer – 1954–1989 Big Twin JIMS, pinion gear spacer Fitment 54-89 Big Twin (NU) Product Details Brand: Jims Category: MOTOR PA...

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£13.78
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£24.37
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£24.37
£24.04
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ERT ''Superpump'' Kit for Twin Cam – 1999–2017 Twin Cam

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ERT ''Superpump'' Kit for Twin Cam – 1999–2017 Twin Cam Designed to work on all 99-17 Twin Cam models. Kit comes with 3 color-coded springs to incr...

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£24.37
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£24.37
£24.04
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ERT Superpump Spring Kit – 1966–1999 Big Twin

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ERT Superpump Spring Kit – 1966–1999 Big Twin 3-spring color coded kit; fits OEM; OEM style & S&S oil pumps Fitment 66-99 Big Twin (NU) (Ex...

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£24.04
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£626.74
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£519.73
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Daytona Shovelhead Rocker Box Set. Polished – 1966–1984 Shovelhead

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Daytona Shovelhead Rocker Box Set. Polished – 1966–1984 Shovelhead Polished cast aluminum. OEM reproduction of front and rear rockerbox. Does not i...

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£626.74
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£519.73
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£35.48
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£33.78
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Hastings 3-1/2" Bore Piston Rings Chr/Moly. +.005" – L1978–1984 Big Twin Shovel 1340CC

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Hastings 3-1/2" Bore Piston Rings Chr/Moly. +.005" – L1978–1984 Big Twin Shovel 1340CC Std cyl. bore: 3.498" (88.85mm). 1st ring: 1.6mm. 2nd ring: ...

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£33.78
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£38.22
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£38.22
£36.39
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£36.39

Hastings 3-7/16" Bore Chr/Moly Piston Ring Set. STD – 41-E78 1200cc/74" Big Twin

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Hastings 3-7/16" Bore Chr/Moly Piston Ring Set. STD – 41-E78 1200cc/74" Big Twin Std cyl. bore: 3.4375" (87.312mm). 1st ring: 1.6mm. 2nd ring: 1.6m...

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£36.39
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£200.37
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£197.57
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Jims 87-99 B.T. Connecting Rod Roller & Retainer Kit – 1987–1999 Evo Big Twin

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Jims 87-99 B.T. Connecting Rod Roller & Retainer Kit – 1987–1999 Evo Big Twin With steel cages. No oversize rollers available; use oversize cra...

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£200.37
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£197.57
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£63.50
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MCS 87-99 B.T. Connecting Rod Roller & Retainer Kit – 1987–1999 Evo Big Twin

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MCS 87-99 B.T. Connecting Rod Roller & Retainer Kit – 1987–1999 Evo Big Twin Steel cages. No oversize rollers available; use oversize crankpins...

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£63.50
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£63.50
£60.45
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£34.42
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£34.42
£32.77
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MCS Pinion Shaft Bearing, XL Sportster. White/Gray – 1987–2022 XL Sportster; 2008–2012 XR1200

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MCS Pinion Shaft Bearing, XL Sportster. White/Gray – 1987–2022 XL Sportster; 2008–2012 XR1200 Sold with the OEM color code. Replacement late style ...

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£32.77
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£34.42
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MCS Pinion Shaft Bearing, XL Sportster. Red – 1987–2022 XL Sportster; 2008–2012 XR1200

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MCS Pinion Shaft Bearing, XL Sportster. Red – 1987–2022 XL Sportster; 2008–2012 XR1200 Sold with the OEM color code. Replacement late style right s...

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