Engines | Mounts, , (USED) 1988 Caterpilllar 3406B Diesel Engine with Jake Brakes, Serial # 4MG31446, AR# 9Y2310, 425HP @ 1800RPM, Test Run 7-17-15, Fully Inspected!!! Runs Perfect!!! Visit JJREBUILDERS.COM for more information on this engine or any other diesel engine you may be looking for. Call 1-800-971-3019. INV # 002555