I am looking to replace my EGR on my '75 Delta. The old one has - UY 7043522 04351 stamped on the top. Does anyone know were to get a replacement and what part number am I looking for? Also how can you tell the difference between federal emission or California emission EGR? Thanks for any help.

 

You should be able to get a replacement from the parts store.

 

From the parts book.

17052688 is Federal emissions (which is production number 7043522)
17052691 is Calif emissions (production number 7043521)

Parts stores can cross reference that to the brands they sell. In fact, if you type 7043522 egr into Google, many vendors come up.

 

I found an egr on ebay, but I would still like to know what the difference between the two valves is. Just curious.