PRODUCT DESCRIPTION: - Race class designed GTX4502R - Special 49 Trim, 71.8 mm inducer and 102.3 mm exducer with NO TURBINE HOUSING - This turbo is built for class requirements that are limited to a 72mm compressor wheel - Turbine side of this turbo will mate to any GT45 series turbine housing - Same compressor housing style as GT42 - Externally interchangeable with an existing GT42 turbo setup ** Turbine Housing sold separately **