Big/Small block MerCruiser O2 sensors
03-09-2023 | 09:26 AM
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From: Bradenton, Fl.
Big/Small block MerCruiser O2 sensors
If you have a big block or small block mercruiser engine that has oxygen sensors pt# 8M2003959 and they go bad. You will be paying around $125 each.
On the other hand. You can buy the exact same oxygen sensor from GM pt# 12640453
on eBay all day for $48. I found a dealer that sold them to me for $35 each.
On the other hand. You can buy the exact same oxygen sensor from GM pt# 12640453
on eBay all day for $48. I found a dealer that sold them to me for $35 each.
Last edited by AmiableDave; 03-09-2023 at 09:28 AM.
