03-07 Cummins 5.9 Smeding Diesel S300SXE Custom Sizes Direct Drop-in Turbo

Smeding Diesel S300 Custom drop in replacement options for the 03 to 07 Cummins. Please choose your Exhaust housing, Turbine wheel and Compressor wheel.  If you have chosen a option that will not work it will show with no price, this means that turbo is not available.  12cm Vs 14cm The 12cm housing will be faster spooling but will get hot after long wide open throttle pulls due to the size, The 14cm housing will be a little slower spooling but will handle wide open throttle situations better. The 12cm housing is only available on the 65mm and 68mm turbine wheels. 65mm Vs 68mm Vs 73mm These numbers reference the size of the S300 turbine wheel (exhaust wheel) , we offer 3 different sizes as you can see: 65mm 68mm and 73mm. Bigger is not always better, its best to choose the proper size wheel for your application! Bigger the turbine wheel, the more energy needed to move it. The 65mm turbine wheel will be the fastest spooling but will not support much over 500 hp. The 68mm turbine wheel wi