How do you identify the transmission in a Dodge truck?

Identify the transmission in a Dodge truck by finding its identification number on the driver-side of the case flange above the oil pan gasket. It's made up of a nine-digit part number, followed by a space and a four-digit build date, followed by another space and a four-digit serial number.

Dodge transmissions are also identifiable using a transmission look-up table, which matches certain attributes of the specific make and model to the corresponding transmission. For instance, using the table on AutoRepairManuals.biz, the transmission in a 2003 Durango, both rear-and all-wheel drive and an 8-valve, 4.7-liter engine is transmission model 5-45RFE.