Motorcraft Drive Belt TensionerDesigned to provide less operating range variation under tension helping to minimize premature failure and poor performance. Always application specific - no one-size-fits-all solution. Feature a cast-aluminum spring case and arm to resist cracking and fatigue. Sealed-for-life bearing helps provide long service life.Features: Direct OEM replacement Meets strict Ford Motor Company standards Recommended by Ford Motor Company Made of premium materials The finest quality at a great price Provides OEM fit Installs with no modifications