Mercury/Mariner Tohatsu ECU 20HP EFI Four Stroke.


This is a genuine Mercury Mariner part.


Part number: Mercury: 8M0135817 & Tohatsu:  3RS-06401



20HP ECU to fit EFI models:



Mercury Mariner serial number: 0R833820 and up.



Tohatsu serial number: MFS20E.



If you are in any doubt whether this part will be suitable, please contact us first BEFORE purchasing.


eBays estimated delivery dates

Please note delivery dates reflect the following, destination postcode and time of order receipt, delivery service selected and receipt of cleared payment will effect delivery dates, especially during peak times.

eBays estimated delivery times are only estimates, and we have no control over those dates advertised and cannot override them.

We advise buyers to refer to the couriers direct website for accurate tracking information.


Thank you for looking. 

(workshop  + WEB)