BMW S54 Valve Spring Kit by Ferrea 840i A softer bearing is better MTV-CNT
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Description
BMW S54 Valve Spring Kit by Ferrea 840i A softer bearing is better MTV CNT A softer bearing is better for your engine and more tolerant of foreign particles suspended in your oil Engineered filter solutions are required to achieve protection with minimum restriction Ferrea’s precision CNC machined retainers Ferrea valve springs for BMW S54 engines are designed to address three critical issues that can compromise high performance engines: binding