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Description
This is the common fan spacer used on all Pontiac Engines with a standard flex fan - number 535-253 - this is 2 1/2" long. It was used from mid 1966 to mid 1971. Mid 1971-1974 had changed to a 2" spacer. This can be used on all 1964-1981 pontiac V8 engines - it will fit and function just fine but factory correct for the 1966-1971.