MACK , (USED) 2000 Mack E7-427 Diesel Engine with Jake Brakes (ETEC), 427HP@1800, Serial # 0Y0531, Engine Family # YMKXH11.9H56, 11GBA# 1557YP1, Test Run 11-30-15, Perfect Runner, Fully Inspected, Low Miles, Visit Our Website for more information on this or any other diesel engine. Call . INV # 002756