Originally Posted by JSolo

How do you know it's the tensioner? Does the pulley spin freely without and binding, grinding or other peculiarity? Did you check other pulleys for issues?


^^Ordered 2 different flush valves on amz (goes into the bottom part of a typical family home toilet). One was a generic unit, other was advertised as oem.

Upon arrival, both looked identical, down to the same manufacturer's product number markings. The only difference was the cheaper one was shipped in a single layer box (think slightly thicker than a postcard), the oem was shipped in a double corrugated box. Of course one was 2x cost of the other.

tl;dr I'd think twice about buying auto parts on amazon.You don't really know what you're getting until in hand.