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ACL Race Series main bearings for Nissan inline-four diesel engines provide a high-performance oversized option, specified here as .25mm oversize for ZD30 and QD32 applications. Sold as a complete main bearing set, these bearings are intended for rebuilt or modified diesel engines that require precise undersizing or oversizing for restored crank journal fit and reliable bearing clearance.
ACL Nissan ZD30, QD32, Inline 4 Diesel .25mm Oversized High Performance Main Bearing Set
