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Aluminum Cylinder Heads

Aluminum Cylinder Heads

Select subgroup:
for Big Twin Flathead
for Big Twin Flathead
for 45
for 45"/750cc Flathead
Price and stock:
Artikel-№
62-400
net price
$652.87
Available
1
Ready for immediate delivery from our Würzburg, Germany warehouse
* Tax free shipping.
pair
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Aluminium cylinder heads for Flatheads. Harley-Davidson decided to use aluminium cyclinder heads in 1940, as these have much better heat dissipation abilities than comparable cast-iron cylinders heads. Set of front and rear cylinder head.

  • Cylinder head set
  • fits 74” and 80” Flathead Big Twin 1936-1948
  • aluminum
  • nominal bore: 3-5/16 ” / 3-7/16 ”
  • compression: 5.5 : 1 (1200cc), 5.85 : 1 (1300cc)
  • head bolt pattern: Flathead 9 bolt
  • plug threads: 1 x M18 x 1.5 x 12.7 mm
  • replaces Harley-Davidson part number HD 16661-40, 16666-40, and 16667-40
  • gross weight: 6 kg

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