The component was originally designed in thermoplastic for lost-core molding. However, the potential cost savings offered by vibration welding drove the change. With vibration welding, two thermoplastic parts are rubbed together under pressure and at a suitable frequency and amplitude until enough heat is generated to melt and mix the polymer. After vibration stops, the parts are aligned, and the molten polymer solidifies, creating the weld.

To meet the shortened launch time, production tooling was designed directly. The availability of Zytel welding-enhanced PA 6,6 nylon resin, in part, allowed the team to take advantage of the benefits of vibration welding. The material was developed in anticipation of a demand for nylon that combined high-temperature performance, enhanced burst strength and weldability. It also offers a 35 percent improvement in static burst pressure at the weld joint and a burst strength of 11 bars, heat-aging properties, chemical resistance and dimensional stability. It's also suited for welded manifolds offering high-performance requirements, such as glycol resistance for cooling crossover applications and high-temperature resistance for exhaust gas recirculation applications.