2009 Performance Diesel Inc. (PDI) Big Boss Stage 2 Turbocharger / Supercharger for a Kenworth W900L

The PDI Big Boss CAT/Cummins Turbo is made with a very robust design to withstand the toughest heat cycle conditions adding reliability with performance and efficiency. The industry-exclusive stainless steel turbine housing design is built to enhance airflow with consistency. A 1.45 A/R ratio keeps the drive pressure within standards to keep the turbo in its efficiency range to improve performance efficiency. This advanced design of the turbo utilizes a V-band style which eliminates the need for the traditional o-ring design of some engines. Like all PDI products, they are designed to make more horsepower and create more efficiency so you save money while making the drive more enjoyable. Made to support 600-750hp.
Billet compressor wheel
Stainless steel exhaust housing
360 degree thrust bearing
Improved throttle response
Cooler exhaust temperatures