The Nissan Xterra was equipped with the 5-speed RE5R05A and early models have the 4-speed RE4R01A transmission. The RE5R05A was known for early failure due to the factory radiator allowing engine coolant to enter the transmission through the cooling system, which sometimes can be fixed with a RE5R05A valve body replacement. But they aren’t without … Continue reading Nissan Xterra Transmission Problems & Cost | RE5R05A | RE4R01A