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This ACL Race Series main bearing set is a 0.25 oversized kit for VW/Audi 1781cc/1984cc engines, intended for engine rebuilds requiring a quarter‑millimeter oversize. The package includes six bearings with oil grooves and four without; the #4 journal is grooved on both sides while the others are grooved on the block side only. These shells provide the specific oiling layout called out for proper clearance and lubrication after machining.
ACL VW/Audi 1781cc/1984cc 0.25 Oversized High Performance Main Bearing Set
