If the shop was Dose BMW in El Cajon, their claims are accurate. Up until a dozen or so years ago they were the only ZF certified shop and the "official" ZF distributor in the US. That all has changed now, but, as mentioned, if the shop (the second not the one who did the work) was Dose in El Cajon, they know what they're doing when it comes to ZF transmissions and BMW's!

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'01 740i Sport MKIV, Quad Brake Lights, Bi-Xenon retrofit, HID Fogs Dinan 7 Struts, Springs, camber plates, Intake, MAF, CAI, Throttle Body, NBT Retrofit, Strong Strut


'99 318ti Titanium Silver; '97 318ti Boston Green; '13 X5 3.5i Saphire Black Metallic
'84 633csi Black (sold); '88 325iC Black (sold); '97 740iL Black(sold); '01 740iS Black (sold);'97 318ti White (sold); '08 X5 4.8i Titanium Silver (sold); '96 318ti Alaska Blue (sold)