fuel pump wanted.

[six shooter]

Looking for a NIB or gently used in tank fuel transfer lift pump.
I have plenty or worn out, yellowed, 25 year old pumps.
Needing something fresh.
1986 635CSi

[Chris Wright]

I've not tried these but they look interesting:

TRE-340 and TRE-507 pumps Fuel Pumps
Below is a replacement for the OEM main pump for $70 and an in-tank pump that replaces both the external and lift pumps with a single high pressure in-tank pump ($70):

viewtopic.php?p=110510#110510

[M6smitten]

viewtopic.php?t=15642

I have the exact pump you're looking for.