Where can I get 8mmx13mm fuel line? help asap!

[Kozworth]

OK guys I've been searching for replacement fuel line, and ive ran into an issue.

Half the guys say a generic automotive parts store line is ok, if it denotes FUEL LINE directly on it. Others say they only hold to 50 or so psi, and could burst easily. Then I had guys say just go to the dealer.

Anyways, I have a hose that looks like its about time to replace. I stopped at the dealer, and they said they wanted 50~ for one section of hose, and 37 for another, yet would have to order it.. No way in hell I can offord almost 100$ worth of fuel line for two places.

If it was ok to buy at an automotive store, my other issue was that most of their stuff isnt metric. I believe 5/16s is just shy of 8mm.. but wasnt sure if this would make a difference. I am also nervous that (no offense to those working in automotive parts stores) if i get the part, they might give me fuel lines that do not meet the specs of my car.

I also checked on getbmwparts.com, germanautoparts.com, and bavauto.com and none have fuel line that ive noticed.

Please let me know where I can get some reliabile line for a m20b25. I want to test the fuel pressure, but without a test port I would need to put a T joint and connect the Fuel Pressure Kit to that and since I do not have spare hose I cannot do this aswell...

Thanks

[deansbimmer]

You can use SAE injection hose in a pinch but you can order metric hose from any BMW supplier. PN 16-12-1-180-409 for the high pressure. I order from Pelicanparts.com every now and then, they're fairly priced.

[Kozworth]

Wow forgot about pelicanparts...

http://www.pelicanparts.com/bmw/catalog/shopcart/BE30/POR_BE30_FULful_pg6.htm#item31

I am wondering also what is the difference 8mm vs 7mm etc? I believe all my hoses for the most part are original, so I assume 8mm would be best. This should work reguardless of position in the fuel system? (back by the tank, before the rail, the returnline etc..)

[SpecM]

use fuel-injection 5/16th hose (NOT just any "Fuel Line"). It fits really really close. it will be labled "FUEL INJECTION" and a psi rating will be printed on it.

Gates makes it, and Gates makes very good stuff

available at O'Reillys or NAPA

[jlevie]

SpecM has it exactly right. Note that fuel injection hose is pricey (about $6/ft). But you only need to use that hose on the pressure side. You can use ordinary 5/16" fuel hose on the low pressure side of the fuel system and save some money.

[nando]

SpecM has it exactly right. Note that fuel injection hose is pricey (about $6/ft). But you only need to use that hose on the pressure side. You can use ordinary 5/16" fuel hose on the low pressure side of the fuel system and save some money.

wouldn't the low pressure side be equal to rail pressure? the high pressure side would be much much higher, but the cheap non-EFI fuel hose isn't really rated for 3 bar either (and that's assuming there are no pressure spikes).

[FredK]

The $1 a foot cheap stuff is usually SAE 30R7, which has a maximum working pressure of 50psi. It is unlined, though, so it will go bad (get crispy) a lot quicker than the fluoropolymer-lined 30R9 (fuel injection).

[jlevie]

wouldn't the low pressure side be equal to rail pressure? the high pressure side would be much much higher, but the cheap non-EFI fuel hose isn't really rated for 3 bar either (and that's assuming there are no pressure spikes).

The low pressure side of the fuel system is essentially at no pressure. From the FPR back (and the vent lines) the pressure is very close to zero.