Additional core charge of 2800.00 not included. Caterpillar 3126 Long Block Engine W/Injectors 64F8M072SB. Serial Number 8YL, 7AS, CKM, 9SZ, HEP. 3126, 3-Valve, With injectors, All Applications. Ordering Instructions: Provide Arrangement and Serial Number. Call us toll-free 1-800-282-9319 for ordering assistance and complete warranty information.