Hello,

All 72 220Ds all came with the mechanical gauge. It has a capilary tube and gas in it. When the gas escapes the gauge stops working. There are companies that repair them but it is expensive. The bulb type sending unit is in the side of the cylinder head.

I have a shelf full of these old clusters if you want a good used gauge for $25.00 tested. Email me ja17@att.net

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Joe Alexander
Blacklick, Ohio
1964 220SE Rally (La Carrera Panamericana someday)
1966 Unimog 404s (Swedish Army)
1969 300SEL 6.3 (sold)
1969 280SL Pagoda
1973 280SEL 4.5
1974 450SLC FIA Rally car (standard trans)
1982 300D turbo (winter driver)
1986 560SEC
1989 Unimog FLU419 (US Army)
1991 300TE (wife)
2002 SLK 32 AMG (350 hp)