CATERPILLAR , (USED) 1986 Caterpilllar 3406B Diesel Engine with Jake Brakes (Air to Air), Serial # 7FB75421, AR # 7C0177, 425HP @ 2100RPM, Low Miles, Test Run 11-11-15, Fully Inspected!!! Runs Perfect!!! Visit Our Website for more information on this engine or any other diesel engine you may be looking for. Call . INV # 002722