I had my vent fan blades destroy themselves during our last trip and bought a replacement fan at a local dealership. It too had the larger diameter hole for the motor shaft.
I made it fit by taking a 1/8 inch roll pin cut to length and modifying it. I forced the roll pin open (to fit the smaller diameter motor shaft), and then ground down the open split of the pin with my bench grinder.
With some fiddling I got the roll pin onto the motor shaft and forced the new fan blade onto it.
Its worked perfectly ever since.
Gene
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2004 Cougar 285
2003 GMC 2500HD CCSB stock,
except for Bully Dog Power Pup Level 2
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