NOTE: Price listed is for reference only and is subject to change. Please call toll-free 1-800-282-9319 for current price and availability. Additional core charge of 2000.00 not included. Remanufactured Cummins 6B/5.9L Complete Drop-In Engine 55E6D180A 1986-90 Bluebird Bus, 180 HP @ 2,500 RPM, HMRO Turbo, JWAC, Rear Sump, Rotary Pump, Remote Mount KSB, CPL 600, 856 Ordering Instructions: Provide Engine Serial and CPL Number Call us toll-free 1-800-282-9319 for ordering assistance and complete warranty information.