Shop for Aftermarket Charge Air Coolers for the Mack CV713 Truck. Keep your Mack CV713 Granite, RD, or Western Contractor running strong with high-performance charge air coolers. Designed to maximize engine power and efficiency, these 30" x 24.75" coolers ensure optimal heat dissipation for reliable performance. Whether you re replacing or repairing, Bestfit charge air coolers deliver durability and a perfect fit for a variety of Mack CV and GU models.