Fuel Pump recommendations for my 1983 633CSI.

[Sean2005]

I’m doing a refresh and would like for someone to point me into the right direction when it comes to fuel pumps. Thanks!

[jclausen]

Since the car has two, factory or pier burg, Bosch would make the main pump but I don’t know if they make the pre pump

[Sean2005]

Thanks! Should I be searching for an In-Tank or In-Line? From what I’ve found, I believe I need an In-Tank for my car.

[1986series6]

#8 shows pre-pump.

https://www.realoem.com/bmw/enUS/sho...diagId=16_0014

[bmw6fan]

I bought my in tank pump unit from Auto zone about 3 yrs ago and no problem so far. About $175.

[Sean2005]

I bought my in tank pump unit from Auto zone about 3 yrs ago and no problem so far. About $175.

Did it come with the Pre-Pump?

[1986series6]

Sean2005,

The in-tank is the pre-pump or some call it the primer pump.

[jclausen]

Do both pumps

- - - Updated - - -

Do both pumps

[1986series6]

Do both pumps prime, no just the in-tank.

In-tank about 4psi, the main upwards of 43psi.

[Bert Poliakoff]

Just to through in a few cents worth: My 81 Euro, with Motronic 1.o only runs a main pump. Real oem shows it with an in tank pump, but I know mine never had been apart and is totally original. Go figger

[Sean2005]

Sean2005,

The in-tank is the pre-pump or some call it the primer pump.

Ok cool. So I’ll need the in-line pump as well? I just want to make sure I order the right parts. Thanks!

[bmw6fan]

Ok cool. So I’ll need the in-line pump as well? I just want to make sure I order the right parts. Thanks!

Yes, you have two pumps. In-tank and in-line.

[Sean2005]

Yes, you have two pumps. In-tank and in-line.

That’ll work. Thanks to everyone for their help!