If you plan to replace your mechanical fan with an electric model, take a couple of notes here before getting started. First, puller fans are more effective than pusher fans. If you have enough space behind the radiator, use a puller fan. Next, note that the radiator’s backside is covered with a fan shroud which forces all the air to go through the radiator and through the fan. No shroud usually equals poor cooling. Finally, note that the radiator and fan are both sturdily mounted. There’s a thin strip of foam rubber above and below the radiator to protect the end tanks from metal-to-metal abrasion.