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The Getrag 420G transmission in the e46 M3 and others was designed to handle the torque load placed on it by the S54 and similar motors. The ZF Type H in our cars apparently was not. Fact is it was added to Z4M cars because the Getrag would not fit. I have never seen the torque spec on BMW part # GS6-37BZ (ZF Type H), however, many have speculated its not up to the job or Getrag e46 M3 unit.
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2006 Z4MC - #LL93158
SS Race Cans, RE X Pipe, DKF Sec 1, Fabspeed Headers, OE STB, AS Shifter, Dave Z CDV, GC Coil Overs, Stoptech lines, Hawk DTC Pads, RE Clutch Stop, RE Transmission Mounts, Vibra-Technics Engine Mounts, Poly FCAB & RTAB, LeatherZ M Shift Boot, Tekarbon Rear Spoiler, CF Grills, Advan RS DGM
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