SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: Leak at the pump is NOT the pump.

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Old 01-13-2020, 02:10 PM
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2003 SL500
Leak at the pump is NOT the pump.

I thought my ABC pump was cracked or something as fluid comes spewing out of it on the side, but as it turns out it's this gadget. It shoots fluid out at the seam where the red arrow is. What is this part called? eBay has used ones called a pulsation dampener, but I think that's incorrect. The pulsation dampeners are black and round. I would rather get a new one than used on this seeing how they can apparently fail. It would be awesome of anyone has a part number for this. Thanks in advance.





Old 01-13-2020, 04:04 PM
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That is an inline dampener but it's not "the" pulsation dampener, and it's part of the hose. The diagram you are looking at is a for an S430, which will use different parts. Assuming your car is LHD, the part you need for that hose is A2303207453.
Old 01-13-2020, 06:39 PM
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The hose is attached to this leaking part with a banjo fitting. The fluid comes shooting out of at the seam where the arrow is. The line is fine. I need the damper or whatever it is. Like I said, I found a bunch of them on eBay for an R230 SL500 but they're all used.


Old 01-13-2020, 06:43 PM
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Oh wait, what you're saying is that this part comes with the hose...Got it.

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