I noticed blue stains on my garage floor. An inspection revealed the pump for the rear window washer was leaking. I thought I was going to need a new pump. Closer examination showed that the seal where the pump is inserted into the washer fluid reservoir was the problem. A new strainer, part #61667006063 for $1.13 solved the problem. If you work fast, you can remove the pump and replace the strainer without draining the reservoir.

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2013 X5 3.5i M Sport
2004 M3 cabriolet SMG