The Peterbilt Replacement Elbow is a practical solution for replacing the Peterbilt Part # 14-15501. With a 5-inch diameter, this replacement elbow is designed to fit Peterbilt 357 Dual Exhaust with Above Frame Exhaust. Sold individually, it offers a cost-effective option for maintaining your vehicle's exhaust system. Designed to fit the OEM Part Number: Peterbilt 14-15501, this replacement elbow ensures a proper fit and functionality. Upgrade your exhaust system with this reliable and durable replacement elbow.