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Review on πŸ”§ ACDelco GM Original Equipment 12569301 Drive Belt Tensioner - Reliable and Long-lasting Automotive Component by Todd Look

Revainrating 5 out of 5

Every LS1/6 owner should buy this tensioner.

Works! This is a mandatory upgrade for LS1/6 engines. The tensioner on them tends to squeak (like mine) and the outer lugs aren't high enough, causing the belt to sometimes fly off on hard downshifts (happened to me and many of my friends). This LS2 tensioner fixes both problems, the big one being the higher outer lip.

Pros
  • Offers GM quality, reliability and durability OE
Cons
  • There are cons