Anyone know what size these preheater lines are (rubber ones) that run from the head to the IP?

I'm going to be replacing most of those lines today and tomorrow (among other things)...

Thanks!

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

Are you referring to the ones from the fuel thermostat to the IP? They don't run to the head. I seem to recall they are 5/16 in or 7.6 (?) mm.
1/4 in was too tight but I could be wrong.
Fuel hose (made for gas applications) works fine for this.

If you mean fuel return lines they are 3.2 mm and you won't find that at the Pep Boys or Autozone! I have been using 1/8 in. Viton return hoses for that to see how long it lasts. High temp fuel softens the rubber and OE hose material starts weeping after about 10 K miles. The jury is still out on the Viton.

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'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!

The pair I speak of runs right in front of the IP around the oil filter.

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

5/16 rubber lines. I bought Goodyear from Autozone. I didn't forget, I'll try to get you a pic in the next few days.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

I started swapping some out, have to go pick up some more hose... there's a lot more than I thought!

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]