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 1500.00 not included. Remanufactured Cummins 6B/5.9L Long Block Engine 55F6L059G 1996-Up CNG, Shallow Front Sump Ordering Instructions: Provide Engine Serial and CPL Number Call us toll-free 1-800-282-9319 for ordering assistance and complete warranty information.