1986 3.2 Carrera engine....

I have two bosch fuel pumps here, they look identical...

Bosch part #

0 580 464 021

or

0 580 463 010

they look the same other than the part number

Why two pumps?

Do they both have check valves? Is there a Porsche number on them? Can you take a pic?

I found this as a BOSCH reference:

0 580 464 021 (84-89 911 Carrera)

If this thread is still on page 1 by Monday ..... I can cross the Bosch numbers to Porsche for ya.

What's the other one for...? I need one BAD.

it must have come off my car when it was a four cylinder... they look almost identical except for the out end, the 911 one has more brass hardware... must be the check valve john talked about...

The other pump BOSCH # 0 580 463 010

It cross references to 043 906 091

is a 914 pump (1975/1976) and has no check valve. I have one just like it on the shelf (if anyone wants one PM me)

Need a -6 pump bad...

Assdragger pump took a crap (it waited until I filled the damn tank of course!)

hmmm. My original '76 pump has a check valve. Pressure stays up for probly 15 minutes after the engine is shut off. Isn't that a checkvalve? Jim

Have you a picture?

My late style pump has no check valve. It does maintain pressure until it bleeds back through the pump. (well it did until I put a 3.2 in there)

No. No picture. It looks like yours- one nipple at each end, no return nipple. It's original to the car.

Jim