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N52 to N54 6HP19X to 6HP21X
I've read lots of conflicting information on this topic. Still unclear. I have 06 330xi with a 6hp19x, requires replacement. Fwd driveshaft aft universal broke cracked the transmission housing. I cannot find a 19x, if a did I would swap the valve body's and be done with it. I can get a 6hp21x out of a 08 335xi. Are these compatible? I've read sometimes it's a replace and drive off, no coding. then I've read you require coding of the car wont move?!?! Is this any easy swap out? Is the torque converter the same? Driveshafts the same? Cannot get a straight answer. Your well appreciated knowledge and assistance is well received!!!
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