I agree with Ron, that it would appear that at present the 029 sensor is not available on its own and only in a housing.
However I will let the forum know if I get a reply from Bosch as to the actual specification differences between the two.
Initially, there seems to be a very slight moulding difference where the connector goes in.
It would appear from my research that the only reason for the 032 sensor being singly available and much cheaper than the 029 is because of a VW lawsuit.
I wonder why bmw have not gone down the same route with the 029, which seems to suffer the same failure rate.
Matt
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