Engines | Mounts, , (USED) 1990 Caterpillar 3406B Diesel Engine with Jake Brakes (WATERCOOLED), Serial # 7FB35731, 400HP @ 1800RPM, Test Run 1-6-15, 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 # 002773