69 &up smog pumps

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**hiperf69** · #1 02-28-2018, 06:45 AM

Hi,what are the casting dates on the back
Of the housings ?
The one pictured looks to be maybe a
"047" or something "47".
The rear cast date will always be before
The stamp date within a small month or 2 window.
Thanks,Joe .

**ALLZS** · #2 02-28-2018, 02:24 PM

Here is a better picture of the back of 1 of the pumps on this pne the casting date is 39 the others look like 206 - 322 - 68

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