From the service manual illustrations, it appears that for a coupe you gain access by removing the back seat: 47-7000D Removing and installing fuel gauge sending unit. I found this in the on-line Model 124 Maintenance Manual. While there, I also found a user's write-up on Fuel Tank Gauge Sender Removal & Installation. The factory manual says to replace the O-ring with new.
Looking at the 1245420004 sender, I wonder if it will be a direct fit. The geometry seems to indicate it's for a sedan, not a coupe--see 47-7000 Removing and installing fuel gauge sending unit. A phone call to a dealer's parts counter or good on-line parts supplier should clear this up.
Looking at the 1245420004 sender, I wonder if it will be a direct fit. The geometry seems to indicate it's for a sedan, not a coupe--see 47-7000 Removing and installing fuel gauge sending unit. A phone call to a dealer's parts counter or good on-line parts supplier should clear this up.
