Motortechnic Aluminum Cylinder Head Set for Harley UL 74ci and 80ci (1937–1946)

Aluminum front and rear head set designed for Harley-Davidson UL models 74ci and 80ci (1937–1946). Cast after the OE Cast Ironheads, this set mirrors the original layout while upgrading the material. Crafted in Taiwan, it accepts 18mm spark plugs and stock-type head bolts for straightforward installation.

• Machined for brass primer cups to ensure proper fit and function.
• Compatible with V-Twin copper head gaskets for enhanced sealing.
• Uses large hex 18mm spark plugs for reliable ignition system.

Note: Spark plugs, head bolts, washers, and primer cups are sold separately. For best results, pair this head set with accessories such as the Replica Headbolt Kit, Brass Head Primer Cups, Doering Spark Plug Set, and Copper Head Gasket for optimal performance and fitment.

Designed specifically for Harley-Davidson UL models 1937–1946, this aluminum head set provides a precise fit and durable performance for vintage restorations and engine rebuilds.

Aluminum front and rear head set is for 74 inch and 80 inch models. This set is casted after the OE Cast Ironheads which features the squish inchWR inch combustion chamber.

Enhance your vintage Harley Davidson UL engine with the Motortechnic Aluminum Cylinder Head Set, designed specifically for models from 1937 to 1946. Crafted in Taiwan, this set is engineered to accept 18mm spark plugs and standard head bolts, providing a reliable upgrade for classic motorcycle restorations and rebuilds. The heads are precisely machined to accommodate brass primer cups, ensuring optimal contact and performance. We recommend pairing this head set with V-Twin copper head gaskets for improved sealing and durability, contributing to longer engine life and better heat dissipation. The set uses large hex 18mm spark plugs, making installation straightforward for experienced mechanics and hobbyists alike. Please note that spark plugs, head bolts, washers, and primer cups are sold separately and must be ordered individually to complete the assembly. The compatibility with existing components and the high-quality manufacturing process make this head set a valuable addition to your Harley Davidson UL engine rebuild. Whether restoring a vintage bike or upgrading your current setup, this aluminum head set offers a combination of precision engineering and classic style, ensuring your motorcycle runs smoothly and reliably. It is recommended to use with the suggested accessory items, including the Replica Headbolt Kit, Brass Head Primer Cups, Doering Spark Plug Set, and Copper Head Gasket, for optimal performance and fitment.

Features:

• Accepts 18mm spark plugs and stock-type head bolts for easy installation

• Machined for brass primer cups to ensure proper fit and function

• Compatible with V-Twin copper head gaskets for enhanced sealing

• Uses large hex 18mm spark plugs for reliable ignition system

• Designed specifically for Harley Davidson UL models from 1937 to 1946

Fitment:
Harley Davidson UL 1937
Harley Davidson UL 1938
Harley Davidson UL 1939
Harley Davidson UL 1940
Harley Davidson UL 1941
Harley Davidson UL 1942
Harley Davidson UL 1943
Harley Davidson UL 1944
Harley Davidson UL 1945
Harley Davidson UL 1946
Harley Davidson UL 1947
Harley Davidson UL 1948