3925522 AQ pulley

[Sal C.]

Is there a Corvette application for a 3925522 AQ smog pump pulley? It is a painted pulley not phosphate plated.

[Joe L.]

Re: 3925522 AQ pulley

Is there a Corvette application for a 3925522 AQ smog pump pulley? It is a painted pulley not phosphate plated.

Sal------


Certainly, there is Corvette application for the GM #3925522 pulley. These pulleys usually do not have a broadcast code suffix. However, if I found a 3925522 pulley with the AQ broadcast code, I'd have to conclude that AQ was the broadcast code for this pulley even if most 3925522 pulleys do not have the suffixing broadcast code.

As far as it being painted, as you know most of these pulleys are seen with phosphate finish. However, that does not mean that all were. I suspect that the GM specs for this pulley provided for alternate finishes. However, the thing that I have noted in regard to pulleys is that those manufactured back in the 60's or 70's often have the phosphate finish. Later manufactured pulleys for SERVICE are almost always painted. In addition, the manufacturer often changes over time. Many of the original pulleys were manufactured by some company identified by an "S"; later often have other ID marks or no visible ID mark.