What is the part number for a W123 fuel filter banjo bolt?
 

Long story but to sum it up I'm going to need a new fuel filter banjo bolt, the one that holds the fuel filter in place. I've been looking around on line and can't come up with one. Thanks.

If you are speaking of the Central largest bolt remember there are 2 types. The older one that has 1 O-ring near the threaded end and uses a Crush Washer under that head at the top and the Later Version that has the same O-ring at the bottom and also has a larger O-ring up by the hear of the Bolt. The upper portion of the Later version Filter Housing is machined cylindrical for about 1/2-3/4 of an inch while the Later Version is as cast and slightly tapered.
Anyway here is a Russian Parts site; in English. Pick your chassie and model.
http://www.detali.ru/cat/oem_mb0.asp?TP=1

The filter stuff is listed with "Injection Pump"

http://www.detali.ru/cat/oem_mb2.asp?TP=1&F=123132&M=617%2E912&GA=722%2E118405&GM=716%2E005++++++++++++++717%2E400&CT=M&cat=1 43&SID=07&SGR=120&SGN=04

It is listed as item #38, Hollow Screw. The note number over to the Right side goes to the bottom notes which will try try to identify your Engine number as to which Filter Housing you have and Which Bolt you would use.

I have a few in my junk bin. I can either send you the bolt but there are 2 types or I can send you the whole filter assembly. Send me a PM.

Since your running Veg and you need a new Banjo bolt anyways, I suggest you make a custom M16x1.5 Banjo bolt and upgrade to a 2 micron Baldwin BF7591-D filter with a water separator drain.

See thread for more details...
http://www.peachparts.com/shopforum/diesel-discussion/225004-lower-micron-fuel-filter-mod.html

Nah, he's not running enough diesel fuel to need a better diesel filter.:D