go to my website below, lots of DIY>>private DIY links>>Johan & Sean, he has the info how to change it on a 735.
I still have some new Bosch 13231 oxy sensors here on stock on Japan. That are for M60 and M70 engines and maybe some more.
Oxygen Sensor; OE Version; Four Wire; Heated
The 13231 has long wires with plugs, so it might fit, provided the length of the wire loom is enough. 50 cm long with the plug/connector (round type connector. 4 wires, heated version.
535 E34 has original 13052
http://img204.imageshack.us/img204/3708/dscf0056fx8.jpg
http://cgi.ebay.com/ebaymotors/1992-...101015005r3413
89-89 BMW All Models ( 6-3430 3.4L SOHC)
91-93 BMW All Models ( 6-3430 3.4L SOHC)
88-88 BMW 535i/is ( 6-3430 3.4L SOHC)
90-90 BMW 535i/is ( 6-3430 3.4L SOHC)
88-88 BMW 635csi ( 6-3430 3.4L SOHC)
88-88 BMW 735i/iL ( 6-3430 3.4L SOHC)
90-90 BMW 735i/iL ( 6-3430 3.4L SOHC)
92-93 BMW All Models ( 6-3535 3.5L DOHC)
89-89 BMW All Models ( 6-3430 3.4L SOHC)
91-93 BMW All Models ( 6-3430 3.4L SOHC)
88-88 BMW 535i/is ( 6-3430 3.4L SOHC)
90-90 BMW 535i/is ( 6-3430 3.4L SOHC)
88-88 BMW 635csi ( 6-3430 3.4L SOHC)
88-88 BMW 735i/iL ( 6-3430 3.4L SOHC)
90-90 BMW 735i/iL ( 6-3430 3.4L SOHC)
92-93 BMW All Models ( 6-3535 3.5L DOHC)
check the length of your wires, if that fits, maybe I can offer that cheaper to you from Japan to AUS.
Even cheaper solution is a no brand one without plug, must be soldered on,
http://www.autopartswarehouse.com/mm...sor~parts.html
UNIVERSAL OXYGEN SENSOR, HEATED, 4-WIRE -- 15 cm long wiring; Includes butt type connectors and easy-to-follow instructions; Without plug; Quality tested to ensure efficient fuel combustion; A high quality oxygen sensor; Features stainless steel shell, hex nut, and shield, Teflon-covered insulated wires, high-temperature rubber internal and external seals, and threaded tube coated with anti-seize compound; Helps reduce harmful emissions;
EDIT!
the one for the M70 engine, Bosch 13231, does not fit, your 535/735 oxy sensor wire loom is much longer.
59.1in = 150 cm
see here and scroll down to Bosch
http://www.autopartswarehouse.com/mm...sor~parts.html