I am having fuel sending unit isues. I can get the unit out of a 240D in the yard. There is a 300CD in there as well. That may be a better candidate. Are they all the same with recalibrated guages or different resistance or length units? Thanks, paul

__________________
http://img212.imageshack.us/img212/5...andbenzqj3.jpg1979 W123 300D Silver with Blue interior

I would say they are all the same, same tank, all diesel and same gauge. However, if you can choose between a 240D and a 300D, and you want to put it in a 300D, I would get it out of the 300D. But I think they are all the same if diesel.

__________________
Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!

I would think they would work, but you may want to check part #'s at the above button "Buy Parts".

__________________
83 SD

84 CD

compare the actually length of the senders.

__________________
1981 300SD 512k OM603

It depend on what size tank each car has. I think the 240D has a 17gallon, and I think the 300's have a 21 gallon tank. Correct me if I'm wrong.

__________________
1985 300TD Turbo Euro-wagon
1979 280CE 225,200 miles
1985 300D Turbo 264,000 miles
1976 240D 190,000 miles
1979 300TD 220,000

GONE but not forgotten
1976 300D 195,300 miles
1983 300D Turbo 175,000 miles

http://i42.photobucket.com/albums/e3...e485-1-2-1.jpg

Yes & no. Many 240's had a smaller tank than the 300D's. so the tank unit was different.

Back in 1982 when the 240D's had a plastic tank even the replacement sending unit was different.

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

I figured it probably would be different. I will try to get to the tank in the 300CD when I go and pull the one out of it. Paul

__________________
http://img212.imageshack.us/img212/5...andbenzqj3.jpg1979 W123 300D Silver with Blue interior