This is a brand new pair of cylinder heads for a VW Type 1, 2, or 3 dual port. Head comes with a stainless steel 35.5mm intake, stainless steel 32mm exhaust valves, harden keepers, chromoly retainers, and single high-rev springs. They are ready to install.

Made from an AA 500 series casting, these come STD with clean flowing cooling vanes for maximum cooling through the head and around-the-intake ports for increased HP and overall cooling.

These heads feature:

• A modernized combustion chamber for increased head flow & performance.
• A second full fin so you can fly cut your heads deeper to achieve almost any desired head CC volume needed.
• Blocked-off rocker stud bosses to eliminate the O-ring and stop possible oil leaks.
• Long-reach 3/4" spark plugs to reduce the chance of cracking between the valve seat and plug.

Engine: VW Type 1 2 and 3 1600 dual port

Springs: Single

Valves: 35.5mm intake by 32mm exhaust

Casting: AA Performance 500

Plug Size: 14mm (Replacement Bosch number is W8CC or NGK is B5ES.)

Bore: 85.5 - works with 85.5,87 and 88 slip-in kits

Bore: 92 - works with 88 thick wall, 90.5, and 92mm kits

Bore: 94 - works with 92 thick walls K and M and 94mm kits