Steve,
Are you talking about 140 993 58 01...or another?

I had them install the one on the right side of the valve body, second from the rear.

__________________
Jeff

97 E320, ours 217,000miles
91 190E 2.6 daily driver 242,000miles
74 MGB,mine 120,000?
2006 BE350/Proline 21, 50 hours