Quote:
Originally Posted by toomany MBZ
I learn something new nearly every day.
Fortunately, the five black button ones I replaced have not leaked, using the appropriate seal ring.
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I'm sure that most pump bodies can accept the new primer pump with no issue but Bosch seems to acknowledge that it might not so they give you a precaution. No reason not to properly use a little high-quality sealant.
Glad that yours are working out well.
Dan