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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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£27.17
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Jims Camshaft Needle Bearing. Inner – L1958–1990 XL Sportster; 1987–1990 Buell

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Jims Camshaft Needle Bearing. Inner – L1958–1990 XL Sportster; 1987–1990 Buell Full needle. 4 used. OEM replacement reference 9057 Fitment L58-90 X...

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£167.85
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Jims Pinion Shaft Bushing. Std. Size – 1939–1973 45" Flathead

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Jims Pinion Shaft Bushing. Std. Size – 1939–1973 45" Flathead Steel. In crankcase. Fitment 39-73 45" Flathead (NU) Product Details Brand: Jims C...

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Jims Pinion Gear 54-77. Green – 54-E77 Big Twin (Average)

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Jims Pinion Gear 54-77. Green – 54-E77 Big Twin (Average) Gear size over .105" pins: 1.4470-1.4465". Cam gear over .105" pins: 2.7685-2.769". Made ...

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£214.77
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£166.08
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£163.76
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Jims Sprocket Shaft Crankcase Bushing. STD – 1939–1973 45" SV. OD 1.753"

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Jims Sprocket Shaft Crankcase Bushing. STD – 1939–1973 45" SV. OD 1.753" Left side crankcase bearing race. Standard size is 1.753" OD. Fitment 39-7...

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£163.76
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£18.18
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MCS Dowel Pin, Cylinder/Transm. Trap Door – Cylinder Head & Case: 1984–1999 EVO Big…

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MCS Dowel Pin, Cylinder/Transm. Trap Door – Cylinder Head & Case: 1984–1999 EVO Big… Dowel pin, cylinder/transm. trap door Fitment Cylinder hea...

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£142.56
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Gardner-Westcott Crankcase Bolt Kit, Hex – 1970–1999 S&S Big Twin Cases ONLY

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Gardner-Westcott Crankcase Bolt Kit, Hex – 1970–1999 S&S Big Twin Cases ONLY Mounts crankcase halves together. Kits come complete with washers;...

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£140.58
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£18.05
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£15.10

Gardner-Westcott Stud, Feed Pump – 1937–1973 45" SV (OIL PUMP; 3 USED)…

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Gardner-Westcott Stud, Feed Pump – 1937–1973 45" SV (OIL PUMP; 3 USED)… 1/4-24 x 1 3/8 Fitment 37-73 45" SV (NU) (OIL PUMP; 3 USED) (MOUNTS IN CRAN...

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£15.10
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KB Performance Piston Keith Black, Replacement Piston Pin .792" – All KB Pistons

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KB Performance Piston Keith Black, Replacement Piston Pin .792" – All KB Pistons Standard replacement wrist pin for KB pistons. Note: See 944731 fo...

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£7.22
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MCS Bushing, Oil Pump Cover – 1977–1990 XL Sportster

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MCS Bushing, Oil Pump Cover – 1977–1990 XL Sportster Bushing, oil pump cover Fitment 77-90 XL Sportster (NU) Product Details Brand: MCS Category...

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£9.05
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MCS Relief Valve, Oil Pump – L54-E82 Big Twin

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MCS Relief Valve, Oil Pump – L54-E82 Big Twin Relief valve, oil pump Fitment L54-E82 Big Twin (NU) Product Details Brand: MCS Category: MOTOR PA...

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£122.93
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£121.22
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Gardner-Westcott Crankcase Bolt Kit, Acorn – 2000–2017 Softail

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Gardner-Westcott Crankcase Bolt Kit, Acorn – 2000–2017 Softail Mounts crankcase halves together. Kits come complete with washers; studs and nuts wh...

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£121.22
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£100.41
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Gardner-Westcott Crankcase Bolt Kit, Acorn – 1979–1982 Big Twin

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Gardner-Westcott Crankcase Bolt Kit, Acorn – 1979–1982 Big Twin Mounts crankcase halves together. Kits come complete with washers; studs and nuts w...

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£95.60
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£21.84
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MCS Driven Gear, Feed. Oil Pump – 1954–1962 & 1972–1976 XL Sportster

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MCS Driven Gear, Feed. Oil Pump – 1954–1962 & 1972–1976 XL Sportster Driven gear, feed. oil pump Fitment 54-62 & 72-76 XL Sportster (NU) Pr...

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£20.79
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£37.48
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Colony Inner Pushrod Cover Tube Set. Zinc – 1999–2017 Twin Cam; 2017–2025 M8

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Colony Inner Pushrod Cover Tube Set. Zinc – 1999–2017 Twin Cam; 2017–2025 M8 OEM style reproduction zinc plated inner (upper) pushrod cover tubes. ...

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Colony Oil Pump & Crankcase – 1981–1999 Big Twin

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Colony Oil Pump & Crankcase – 1981–1999 Big Twin Zinc plated. Reproduction of the OEM round slotted style. Fits oil screen; check valve and rel...

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£7.02
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£10.70
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£9.83
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Colony Oil Pump Relief Valve – 1954–1967 Big Twin

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Colony Oil Pump Relief Valve – 1954–1967 Big Twin Zinc; OEM reproduction bypass valve; incl. washer Fitment 54-67 Big Twin (NU) Product Details B...

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£9.83
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Colony Oil Screen Crankcase – 1970–1980 Big Twin

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Colony Oil Screen Crankcase – 1970–1980 Big Twin Zinc; OEM reproduction Fitment 70-80 Big Twin (NU) Product Details Brand: Colony Category: MOTO...

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£10.70
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Colony OEM Style Slotted Plug Oil Screen Crankcase. Zinc – 1966–1969 Big Twin

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Colony OEM Style Slotted Plug Oil Screen Crankcase. Zinc – 1966–1969 Big Twin OEM 655 reproduction slotted style plug. With 62702-52 brass gasket. ...

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£10.70
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£9.83
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Colony OEM Style Slotted Plug Oil Screen Crankcase. Zinc – 1952–1965 Big Twin

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Colony OEM Style Slotted Plug Oil Screen Crankcase. Zinc – 1952–1965 Big Twin Zinc plated reproduction style. Repl. 24987-52 plug and 24994 copper ...

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£9.83
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£9.15
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Colony Oil Pump Check Valve – 1936–1980 Big Twin OHV & SV; 1937–1952…

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Colony Oil Pump Check Valve – 1936–1980 Big Twin OHV & SV; 1937–1952… Zinc; OEM style; reproduction Fitment 36-80 Big Twin OHV & SV; 37-52 ...

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£8.41
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Colony Oil Pump – 1936–1952 Big Twin OHV & Flathead…

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Colony Oil Pump – 1936–1952 Big Twin OHV & Flathead… Zinc plated. Bypass plug/bypass valve; OEM reproduction. OEM replacement reference 26367-3...

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£8.41
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£38.17
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Colony Cylinder Base Stud Set – 1930–1977 Big Twin

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Colony Cylinder Base Stud Set – 1930–1977 Big Twin 8-pack Fitment 30-77 Big Twin (NU) Product Details Brand: Colony Category: MOTOR PARTS > C...

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£37.71
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£23.92
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Gardner-Westcott Rocker Box Top Bolt Kit. Buttonhead, Stainless – 1984–1999 Big Twin; 1986–2022 XL…

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Gardner-Westcott Rocker Box Top Bolt Kit. Buttonhead, Stainless – 1984–1999 Big Twin; 1986–2022 XL… Stainless buttonhead bolts. Includes washers. F...

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Gardner-Westcott XL Side Cover Mount Kit – 1991–2003 XL Sportster

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Gardner-Westcott XL Side Cover Mount Kit – 1991–2003 XL Sportster Stainless steel allen Fitment 91-03 XL Sportster (NU) Product Details Brand: Ga...

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£45.67
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