Air Suspension Pumps

X5-D-Sport · Post by **X5-D-Sport** » Mon Mar 13, 2023 3:48 pm

Question for the Minions here...

is there an X5 E53 with full front & rear air suspension ?
AND
if Yes, is the Rear Air Suspension pump on my X5 the same pump & valve block set up to a front & rear
axle air suspension vehicle, if one exists as E53 ?

regards to all
Grant B

sapphireblack · Post by **sapphireblack** » Mon Mar 13, 2023 3:56 pm

I can only tell you, yes, the 4.8is E53 had all round air suspension.

X5-D-Sport · Post by **X5-D-Sport** » Mon Mar 13, 2023 3:59 pm

Hello friend, Many thanks for the info.
do you know if they had Twin pump valve sets or one for the whole vehicle...
AND if they were identical ?

Richard will probably know the answer to his one I hope.

sapphireblack · Post by **sapphireblack** » Mon Mar 13, 2023 4:30 pm

Richard is your man. I don't doubt he'll be here shortly.

X5-D-Sport · Post by **X5-D-Sport** » Mon Mar 13, 2023 4:33 pm

here's hoping lol

X5Sport · Post by **X5Sport** » Mon Mar 13, 2023 5:57 pm

I can only see that the parts list has different numbers. It doesn’t show the actual pump, just the ‘dome’ as a complete assembly.

The air supply control unit is also different. The 4.8is has a separate valve block assembly for 2-axle suspension that isn’t shown for the single-axle self levelling option.

I’m going to hazard a guess that the compressor itself may be more powerful? It has to fill a pressure reservoir/accumulator that feeds the front wheels via this added valveblock.

It just refers to replacing the entire assembly. We know BMW don’t fix, only replace!

Edit - images of the pumps….not sure it’s a huge help. There are some differences between them.

2-axle suspension

: 9A8F7C2F-C6F7-4BC5-9AF9-8EEED42CD47A.jpeg (124.81 KiB) Viewed 1533 times

Single axle (self-levelling)

: CAAF31F3-EF34-4C77-B65E-2B4D5B01D1A1.jpeg (139.47 KiB) Viewed 1533 times

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