I can't rememeber the torx size but, for sure, You need a very good set of torx not chinese stuff. They are very tight and the risk of breaking the bolts are very high: i damaged one on the three heads of the pump by trying with two sets of semi professional tools and was unable to unscrew the bolt anymore.
Go for one of those
https://www.amazon.co.uk/USAG-TORX%C...ateway&sr=8-31
and You will not be disappointed and waisting Your time
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Rover 75 Connoisseur Tourer (Two), Contemporary SE Saloon and (
**** most of all ****
) Wolseley 6/99 and SD1 2000 owner
Regular Member