Engines | Mounts, , (USED) 1986 Caterpilllar 3406B Diesel Engine with Jake Brakes (Air to Air), Serial # 7FB67985, 425HP @ 1800RPM, Low Miles, Test Run 7-29-15, 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 # 002570