Application 1991~ 4.3L GMC Syclone / Typhoon Bearing Type Journal Bearing / Performance Thrust Bearing Kit with larger thrust ring and flinger. Cooling System Water cooled Compressor Wheel 52.5 mm / 68 mm (20G) Turbine Wheel 54.1 mm / 61 mm ( TD06SL2) Actuator Pressure 1 Bar / 14.7 PSI Turbo Boost Limit 2.8 Bar (Based on Performance bearing kit with larger thrust bearing ) Condition Warranty Brand New 1 year