Just thought that I'd post this for comedy value!
These were the 4 bolts holding the oil filter housing to the block on my 3.8 engine;

One of them must be the right length!
I just love the way Jaguar itemise their bolts in the parts list. It identifies the correct bolt length to be 21 x 1/8". So it is the second shortest bolt which is correct ;-)
Cheers.




