Traditionally, using any material other than metal in the engine compartment was unthinkable. But, that old rule of thumb is changing as many automakers and suppliers use plastic to reduce vehicle weight.
Plastic component helps Ford reduce vehicle weight.
March 1, 2001
North America's first multishell, vibration-welded intake manifold debuted on Ford's 5.4-liter, two-valve engines on the 1999 Ford F-series 150 and 250 light trucks, Expeditions and Lincoln Navigators. This manifold also marks the first use of Zytel welding-enhanced PA 6,6 nylon resin.