Rebuilt E-504 Turbocharger for Caterpillar 3306 Engine July 15, 2010 by robert Turbocharger for 3306 Caterpillar Engine Engine Manufacturer: Caterpillar Engine Model: 3306 OEM Part #: 4N9554 Borg Warner Part #: 180288-RX Sale Price = $850.00 (Call for availability)