Thanks for all of the advice thus far, this is a very useful thread.

Does anyone know if the W124 and W123 tank fuel screen o rings are the same? Does anyone know the specs for them so i can get a viton one? Or is someone just selling the viton o ring somewhere without having to buy the whole kit etc....?

(JADavis, you just sell kits for the later engines, how bout us 616/617 guys :-) ?)

I really like the comprehensive Greaseworks kit, but man it's expensive.

I just need one of those and I am set. I can use the 5/16" SAE30R9 for everything else - except injector return lines which I can get from multiple sources. I just put on new return lines from the dealer, so I will wait for those to show signs of trouble.

dd

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'85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit)
'82 300D, 'Tex', 228k body / 170k engine ... summer car
'83 300TD Cali Wagon 210k, wife's car