The demands placed on injection molded plastic parts within automotive applications are great. Designs are increasingly complex and sometimes require tolerances as tight as .001 inches. Harsh under-the-hood operating environments present extremes in temperatures, chemical exposure, and performance requirements. Designs and materials must stand up to the test.Reliance on injection molded plastic parts to improve safety, increase fuel efficiency, use alternative fuels, and reduce environmental impact continues to rise and evolve in dynamic new directions.