Aluminum Cylinder Heads
Select subgroup:
for Big Twin Flathead
for 45"/750cc Flathead
Price and stock:
Item №
62-400
Price incl. VAT
823.92 €
Available
6
Ready for immediate delivery from our Würzburg, Germany warehouse
The price includes 131.55 € German VAT.
- Cylinder heads
- 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
Aluminum cylinder heads for side-valve engines. In air-cooled engines, material with good heat dissipation is of great importance. When heat builds up, it results in power loss. Higher compression is meant to produce more power, but higher-compression engines run hotter. That’s why, starting in 1940, Harley-Davidson equipped the higher-compression side-valve engines (5:1 and above, with the standard being 3.6:1–4.5:1) with aluminum cylinder heads. Aluminum dissipates heat better than cast iron. The heads offered are supplied in pairs.
Accessories:
55-393
Gasket by James Gaskets; for Cylinder head; fits V-models 1936, U-models 1936-1948; copper; replaces OEM HD 16769-36; gross weight: 35 g
James Gasket Kits for Top End: Sidevalve Big Twin 1936-1948
Include all gaskets for top end overhaul.
Washers for Cylinder Head Bolts: SV Aluminum Heads
Cylinder Head Bolts Kits: Big Twin Flatheads with Aluminum Heads
Have any questions?
Our service team will be glad to help out: Mondays - Thursdays 08:00-17:00 CET, Fridays 08:00-16:00 CET, Phone: +49 / 931 250 61 16, eMail: service@wwag.com