40-2025253 Oil Pump complete, used on the Hercules G1600 gas engine. 250.00 dollars core charge is included in this cost and will be refunded as soon as the used core is returned.40 2025253 Complete oil pump, this pump is used on the 1600 series gas engines. This was a commonly used engine in the Tow Motor Caterpillar forklifts, DMT generators and Daewoo forklifts This will be item number 1 in the Hercules drawing, listed as part number 40 2025251 This is a original Hercules OEM part, NOS. Other part numbers associated with this part is as follows G10032, 402025253, 401025451,36016200 and P691169. Notice shape of gasket,