Intake Manifold assembly GM 12638038 off of 2011 Chevrolet Express van 2500. includes GM GENUINE 12660709 fuel rail, injectors, and GM 2173151 throttle body. no cracks, or damage.  This is the factory cathedral port intake manifold setup known as the TBSS or NNBS intake.  It has superior airflow and design, making it the highest-performing factory cathedral-port intake manifold available.  The throttle body is the larger 90mm version GM offered.  New FEL-PRO 98016 manifold gaskets are included