Cosworth Big Valve Cylinder Head Ford Focus 2.0L 2.3L Duratec 03-07

The Cosworth Duratec CNC ported Big Valve cylinder head is the result of countless ours of development and testing. Starting with fresh large port castings, we precision machine both intake and exhaust ports to maximize flow. We then reshape the combustion chamber to un-shroud the the larger stainless steel valves. The head is then assembled using our hi-rev tapered springs along with new valve stem seals and retainers. This cylinder head is the key to making big power and will flow enough to support 300bhp.

Specifications:
* New OE Large port castings
* Machined port finish
* Knife edge port dividers
* Machined Cosworth Logo and serial number
* Oversize intake and exhaust valves
* Reshaped combustion chamber

About Manufacturer: Cosworth
Over the years we have developed in-depth knowledge of engines, engine components and engine management systems. This has been successfully used to supply engines to some of the most successful Formula One teams and vehicle manufacturers. Our unprecedented success in the performance market has fueled customer demand from diverse market sectors. In addition to the traditional markets, Cosworth is engaged in designing and developing, engines and components for marine, locomotive and aerospace applications.

A rigorous and comprehensive product quality assurance policy is implemented across our business. Quality engineering is embedded in processes, procedures and team ethic; we operate under recognised quality management systems.