Peterbilt now offers a single exhaust stack for trucks with Caterpillar diesels that require an exhaust catalytic converter. The new configuration features a converter mounted on the vehicle's frame and a single vertical muffler and stack mounted to the side of the cab. This converter/single-exhaust is available on Peterbilt models 357, 378, 379 and 385 powered by C-10 and C-12 engines, and soon for ACERT C11, C13 and C15 engines.
