Is it possible to upgrade the w123 fuel tank to bigger one? I think I have a 65L and I want a 80L

The w116 tanks probably won't fit. Car's a bit wider so I guess they took advantage of that.



You don't really have to worry about that though because Mercedes fitted a 80 litre tank to the turbo diesel 300D (US specification for example).


The MB part number is 1234703901

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

Note there's a difference between diesel and petrol tanks - probably best to stick with diesel stuff in your case

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!

I have strainer and fuel level guage I can transfer to the new tank. I hope its the same shape on the W116.

80L tanks were definitely an option for probably any W123. But have to agree, a W116 tank probably won't fit in a 123...well not in the same place anyway....

__________________
1978 300D, 373,000km 617.912, 711.113 5 speed, 7.5mm superpump, HX30W turbo...many, many years in the making....
1977 280> 300D - 500,000km+ (to be sold...)
1984 240TD>300TD 121,000 miles, *gone*
1977 250 parts car
1988 Toyota Corona 2.0D *gone*
1975 FJ45>HJ45
1981 200>240D (to be sold...)
1999 Hyundai Lantra 1.6 *gone*
1980s Lansing Bagnall FOER 5.2 Forklift (the Mk2 engine hoist)
2001 Holden Rodeo 4JB1T 2WD

ok found a W123 turbodiesel tank. W116 definitely wont fit