TurboWorks GT3037R BB 4-bolt turbocharger. Assembled and balanced in Poland, on the highest quality CAB machine. Individual approach to each turbine ensures high efficiency and reliability. Top-quality Japanese bearings provide excellent spool and high boost. Technical data: Bearings: Ball Bearings Flansza downpipe: 4-Bolt A / R: 0.63Turbocharger TurboWorks GT3037R BB 4-bolt.Mounted and balanced in Poland, on a highest quality CAB machine The individual approach to each turbine ensures high performance and reliability The top quality Japanese bearings provide excellent spool and high boost.Specification: Bearings: Ball Bearings Downpipe flange: 4-Bolt Compressor inlet diameter: Compressor outlet diameter: A / R: 0.63 TurboWorks GT3037R BB 4-bolt turbo. Assembled and balanced in Poland, on the highest quality CAB machine. Individual approach to each turbine ensures high efficiency and reliability. Top-quality Japanese bearings ensure perfect spool and high performance. Supercharging Technical data: Bearings: Ball Bearings Downpipe flange: 4-Bolt A / R: 0.63