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Looking for ECM for 7.4L mercruiser...

Jamie1
Guest Contributor

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

Thanks everyone 

6 REPLIES 6

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

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

Stressbreaker
Guest Contributor
How soon do you need the ECM for your 7.4

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

Jamie1
Guest Contributor
If the one arriving tomorrow doesn't work I will need ot asap.