Probably, but I can't say for sure.

My '86 300SDL seems like the pump is different from the 300SL, BUT it doesn't look all that different. I would guess the wire colors are different but the hookup is generally the same.

The guy I bought from had a list of cars it would fit/wouldn't fit (and it wasn't a generic list like "all 1960-1999 Mercedes" or anything like that). I will see if I can dig up his auction or webpage and post it here.

I thought he was selling a universal kit, but from the instructions that came with it, it looks like he has a few different models. For example, my kit only fits R129 SL's and a few other models. W126 and W201 weren't in the instructions at all, even though he sold kits that fit those models.

Neal

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'83 300SD 335,000km (207k) mi SOLD
'87 560SL 163,000km (101k mi) SOLD
'86 300SDL 356,000km (220k mi) SOLD
'92 500SEL 250,000km (155k mi) SOLD
'90 300SL 140,000km (87k mi) SOLD
'01 S430 260,000km (161k mi) SOLD
'03 SL500 167,000km (104k mi) SOLD
'07 S550 4MATIC 235,000km (146k mi) SOLD
'07 GL320 CDI 4MATIC 348,000km (215k mi)
'13 GL350 BlueTec 4MATIC 170,000km (105k mi)
'14 SL550 72,000km (43k mi)