Quote:
Originally Posted by Riggodeaux
Given the issues many have with OEM waterpumps, isn't the Stewart the preferred wp? That's my general impression. My seller put an OEM in mine at 78k miles, I believe.
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OEM WP issues is more of an M52 thing and late 90s thing, the impeller is composite on the M54 and not plastic like 10 years prior to it. The plastic cooling parts yes they need to be replaced more often but there are M54 members on here with a couple hundred thousand and the OEM WP.
My buddy X5SND in Canada actually had issues with the aftermarket pump as it wasn't flowing as well as stock, so he put in an EMP Stewart replacement. If I was replacing mine (I still have original at 79k miles at 11.5 years old), I would do another OE pump or an EMP Stewart.