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Old 07-01-2011, 11:49 PM
JHZR2's Avatar
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Join Date: Jan 2002
Location: New Jersey
Posts: 4,908
w123 lug bolt question


Can anyone help me to remember a few things:

What is the hex size of the OE lug bolts for alloy wheels? 17 or 19mm?

What kind of seat do they have?

What is the correct length? Does it change if I was to change from 14 to 15" bundts?


Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)
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Old 07-02-2011, 01:08 AM
Diesel911's Avatar
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Join Date: Sep 2007
Location: Long Beach,CA
Posts: 46,202
I do not know the info but there is only 2 stock sizes.
A sort one for Steel Wheels and a longer one for the Alloy Wheels.

Go to your favorit internet part seller and see what they sell. Sometimes the Parts sellers give the length.
84 300D, 82 Volvo 244Gl Diesel
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Old 07-02-2011, 01:41 AM
ROLLGUY's Avatar
Join Date: Oct 2007
Posts: 7,167
17mm hex (or 11/16 SAE), ball seat. As stated above, alloy wheels (Bundts) take the longer bolt, steel & aluminum hub cap wheels take the shorter.

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