Additional core charge of 1500.00 not included. Caterpillar 3126 Long Block Engine 64G2L072A. Serial Number HEP. 3126 Series, 3 Valve, 190-210 HP, 1 Piece Piston, 2453259 Cast Iron Front Housing. Ordering Instructions: Provide Arrangement and Serial Number. Call us toll-free 1-800-282-9319 for ordering assistance and complete warranty information.