Engine oil not only serves as a lubricant for moving parts, but as a coolant for the crankshaft, rods and pistons. The bottom end of the engine relies solely on engine oil for cooling. For this reason, maintaining the correct oil temperature is critical to theengine’s performance and longevity. Because your engine may be running a higher RPMs or pulling taller tires. it will produce more heat, maintaining the correct oiltemperature is imperative.This full flow Engine Oil Cooler Kits fits perfectly to either your Land Cruiser or Pickup. We use them. Coil measures 3/4″ x 7-1/2″ x 12-1/2″ and easily attaches to your radiator.