Additional core charge of 1200.00 not included. Caterpillar 3208 Complete Drop-In Engine 58D4D121B. . 3208 Series, 121HP, 2270 RPM, Industrial, Naturally Aspirated, Rear Sump. Ordering Instructions: Provide Arrangement and Serial Number. Call us toll-free 1-800-282-9319 for ordering assistance and complete warranty information.