The OC-10 is a direct replacement for the Honeywell C554A. Honeywell replacement cad cell part numbers are 120320, 124607 and 130367. Comes in a bubble pack as pictured. Works on most residential oil burner applications.
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Multiple units are available and we will combine shipping.
We have many other parts in our Ebay Store. If you don't see your item, contact us with your request. We will let you know if it is available.