All our products are new and have not been used, they are sent in sealed boxes
When replacing a Clutch Fan with a Flex Fan, a spacer is often required. The Fan Spacer takes up the area where the clutch used to be. This properly locates the new fan in the shroud. Without the spacer, the fan could hit other engine parts.
The Flex-a-lite fan spacer is to be used when original equipment fan clutch is removed from the engine, to bring the new fan back into the "sweet spot" in the fan shroud opening. Belt driven fans perform best when they are 3/4" to 1" from the radiators surface. Multiple spacers may be used, up to a maximum of 3 inches.