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Heater box housing differences questions

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While comparing the heater box removed from my 69 2002 and a 74 2002, I noticed the bottom footwell outlets have deflectors on the later box and the early ones do not. I don't think my 73tii has the add-on deflectors.



Is this the reason why the center consoles use deflectors - or do all center consoles have the deflectors?

Another question..

The later (larger diameter heater core) uses box seals # 64 111 353 352, but they don't seem to fit my 69 box top with smaller opening and smaller core. I found another seal # 64 111 351 461 on my Parts CD but Penske does not show it in the illustration (must have been replaced by the 352 part).

Here is a picture of a 74 heater box with new seal # 352 on the right and my old one from the 69 on the left. When I try installing the new seal in my 69 box, it does not seem to fit.



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my '73 does either, so maybe this is a little refinement added to the squarelights. Even without the deflectors the heater blows a nice stream of hot air on the driver's feet in winter--much better than any other car I've owned.


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