2018 Peterbilt 337, PACCAR, PX-9, 350HP, Allison 6 speed Auto Transmission, Day Cab, , , Stock # 826664 2018 Peterbilt 337. PX-9 350HP 68,066 miles. Allison 3000-RDS-P, 6-speed automatic transmission. 162" WB. Unit has been serviced, DOT inspected and DPF has been cleaned. Call us today to speak with one of our sales team members. Price does not include state and local taxes; tags; registration or title fees; dealer-imposed fees, including document preparation, processing or servicing fees, or any optional equipment or upfitting work selected by buyer. Valid while supplies last. Images shown may not reflect actual vehicle.