Showa VS Denso
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94RedSiGal
Senior Member
So you are checking out Koyo radiators? I've only noticed two types, their OEM spec line and their much more expensive all aluminum racing ones. My Si has an OEM spec one and the sedan has a racing one. I don't recall the names denso and showa though.
94RedSiGal
Senior Member
Can you post some links to what you are talking about? Is this for a manual or an auto tranny car?
hcivic.com
Senior Member
i have ehard of both but thats all that i can add
Both started in Japan, Denso moved to America, Showa makes a lot of parts for companies including Honda, Harley, Toyota, Buell, Ducati, etc...Denso makes a lot of parts for everyone. The links you provided don't explain what you are talking about as far as differences in specific products.
94RedSiGal
Senior Member
I'm still confused. Your original question seemed to indicate that you were trying to find out the difference between Koyo Showa and Koyo Denso radiators made for your car. I still don't get the connection between Koyo and the other two companies from your links. How much difference in price between the two radiators in question?
Otherwise, Koyo specializes in making radiators. All that I have ever seen are basically what is found on eBay. There are the black colored ones that are OEM spec and they are much much cheaper than the silver colored all aluminum racing ones. The Koyo site just features the racing ones. 1-800-radiator sells the OEM spec ones.
And for prices:
Koyo racing radiator>>>>>>>>>>Honda OEM radiator>>>>Koyo OEM spec one
Ya man one stock radiator is made by Denso and another by Showa, one if for auto cars and has a tranny oil cooler in it, one is for manual cars and does not have the tranny oil cooler in it. I do not know which is which, look at your stock radiator and see which one you have and buy the appropriate one.
Yeahn to be honest i linked the rwo company names cause i couldint even go back and find what i was talking about 
. I was thinking maybe one was made from a different metal or something i wasint sure. The prices were the same but you have a choice between denso or showa, though with the same brand radiator, so i asumed it was something in the MFG of the cores them self and maybe koyo built with both the different mgf's cores leaving you with the choice. At least thats what i was THINKING.
. I was thinking maybe one was made from a different metal or something i wasint sure. The prices were the same but you have a choice between denso or showa, though with the same brand radiator, so i asumed it was something in the MFG of the cores them self and maybe koyo built with both the different mgf's cores leaving you with the choice. At least thats what i was THINKING.94RedSiGal
Senior Member
Koyo OEM spec radiators are just that, built to original OEM specs. They drop in perfectly too. In terms of them actually making them for Honda with Honda just putting their sticker on the top, I can go to the dealership and inspect a few, but I would think that Koyo would be one of Honda's main suppliers, just like they have different suppliers for their airbags and ECU boards and such. Almost any company will consider making custom spec orders off of their general product line if the orders are large enough to justify it financially.
94RedSiGal
Senior Member
Just to clarify my last post... Denso and Showa made the original radiators for that Honda, but over the years, Honda sometimes changes their suppliers. So a current inventory replacement radiator from Honda could be made by another company for them.
