BD Diesel Track Master Turbine Housing. A/R: 1.10 Foot Size: 3.25" x 2.75" (T4) Note: This is Only an Exhaust Housing for the Track Master Turbo. Matching a turbocharger to your competition diesel is easy with the Track Master series of turbochargers. The non-waste gated, low cost dual volute turbine housings can easily be changed out to match your engine rpm and find the sweet spot of low drive pressure and peak boost level. The compressor flow has been matched for the noted engine power levels. Please call us 717-861-7525 with any question and we will be happy to help you find the right setup for you truck.