I have changed two oil senders so far, and it isn't easy finding something that fits. I could not find a 23mm socket anywhere -- NAPA, Snap-On, Pep Boys, Discount Auto, Sears, etc. I ended up using a slightly larger size American socket. The fit wasn't perfect, but it was good enough. It's been a while, so I don't remember if I used a swivel extension or a straight one. On one of the cars I did, some thick nasty looking oil gushed out when I removed the sender, so watch out. I was ready for it on the second car, and barely anything dripped out. I had the oil drained on both motors, too. Walt Tampa, FL ----- Original Message ----- From: <Soma576@xxxx> <snip> > today i tried to put a new oil pressure sender in because my original one is > leaking a little oil. but i can't get a socket (23 mm), wrench, pliers, > anything on it enough to turn it. the catalytic converter and muffler bracket > are in the way!! <snip>