Looking for ECM for 7.4L mercruiser...

[Jamie1]

Looking for ECM for 7.4L mercruiser horizon with closed cooling. Any leads to finding a replacement greatly appreciated. 

Thanks everyone 

[wingless]

Welcome to the forum.

There are many for sale on eBay.

Not clear to me how closed cooling impacts ECM. That appears to be an external mechanical function, outside of spark and timing.

[Jamie1]

Thank you, I agree the ECM probably doesn't care about cooling. I'll check ebay out today.

[Brite_Idea]

Try:
OBD Diagnostics
888-469-3274
They had one for me when no one else did.

[Stressbreaker]

How soon do you need the ECM for your 7.4

[RBJones]

If the cooling system has sensors in it, it will be connected to the ecm.

[Jamie1]

If the one arriving tomorrow doesn't work I will need ot asap.