ACL Race Series Main Bearing Set (5M8174H-STD) is specifically tailored for 2003 and later Ford/Mazda 4-cylinder 2.0L/2.3L DOHC Duratec motors. These are not standard replacements; they are high-performance tri-metal bearings meticulously designed for the unforgiving environment of motorsports. ACL's cutting-edge metallurgy ensures these components deliver outstanding load capacity and endurance, resisting wear and fatigue even when pushed to their maximum RPM limits. Through strict manufacturing processes and micro-level tolerance control, the bearings guarantee the proper oil film thickness and seating on the crankshaft, which is crucial for consistent oil flow and balanced load management. This crankshaft bearing kit is the benchmark for competition use. As a favorite among engine builders globally, it offers the ideal balance of longevity and cost-efficiency for highly stressed race applications. Rely on ACL for the dependable performance your custom main bearings, crank bearings, and rod bearing systems demand.
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