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With over 10 yrs, and 145k miles, I need to replace my evaporator core - definite leak. Given the extensive labor involved dismantling the dash, I'm reviewing all parts that would be advisable to replace?
Just with regard to the evaporator core, I'm also replacing the expansion valve, and of course any gaskets.
Is there any other parts of the A/C system I should replace at the same time - esp. under the dash?

With regard to the evaporator core - I'm using Denso parts, but wonder if there is a difference between those sold directly by Toyota, and Denso evaporator core purchased at other vendors, e.g. Rock Auto

Finally - given this system with blower is integrated with heating, should I also replace the heater core?

Thanks! Richard
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