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VAG (mostly Audi, some Porsche) early build failures of rocker arm roller follower needle bearings, EA839 3.0T and 2.9TTV6. Needle bearings were too small, wore and created wear on the roller center pin. Needles fell out, rocker arm got loose and went voyaging through the cam chest. No bueno. Mainly 2017-2018 build years for RS5, Q7/Q8, Macan, Panamera and Cayenne. Has since been fixed by VAG via larger needle bearings.
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