Where to buy new NM/NC sensors

Can anyone recommend a place to buy new NM/NC speed sensors for my autobox, or is anyone breaking an auto with good sensors?



I am trying to solve the harsh shifting on my 620 GSI. I have taken both of the above sensors out and cleaned them with carb cleaner. The NM sensor did have some metal filings stuck to it. Unfortunately cleaning them hasn't made the slightest bit of difference.



The gearbox fluid is a lovely ruby red colour, which leads me to believe it has been changed recently, so I haven't bothered changing it again.



I can only assume that the sensors need replacing or there is a fault with the autobox, as the shifts are very harsh.

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