I think you need a 14mm and a 17mm or 19mm (not sure, sorry.) open wrench for the injector and the fuel line itself and a 5mm ( I think it was 5mm.) alan wrench or socket for the holder. That is, assuming you have a M103 engine in your car.
81 300 SD grey/palomino 168K miles
84 190E 2.3 black/grey 64K miles (wrecked)
85 190E 2.3 maroon/palomino 92K miles
88 300E desert red/palomino 204k miles
(made to look like a '94-95)
92 400E desert taupe/creme beige 120K miles
(converted to 94-95 E420 looks)