Cosworth Heavy Duty Flywheel Bolt Set Ford Duratec / Mazda MZR 2.0L / 2.3L 01-11

Cosworth has been modifying Ford four cylinder engines since 1959 and the practice continues with the Ford Duratec/Mazda MZR. The Duratec/MZR was designed as a replacement for the Zetec engine and was developed as joint collaboration with Ford and Mazda. The lightweight engine features a cast aluminum reinforced block and main bearing girdle that help reduce vibration and improve overall rigidity.

The Duratec is an excellent, affordable building block for high performance use and perfect for Lotus Seven inspired sports cars, rally cars and racing.

Heavy Duty Fasteners are one of the most vital engine components for high performance and racing use. Replacing existing original fasteners improves clamp load and can prevent cylinder head and crankshaft movement. Additionally, many of the original fasteners used on the YD are torque to yield, single use type.

Installing previously torqued hardware can lead to catastrophic engine failure. As some racing classes dictate original hardware is used, Cosworth offers the items that typically need replacing during a routine engine build.