Correct pressure cap for main radiator

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Aug 1, 2019 | 05:10 PM

radium

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From: upstate New York

Correct pressure cap for main radiator

Totally confused went and picked up a new radiator cap at a hundred fifty thousand miles for a 2017 6.7 the truck originally had on there 145 kPa with 21 PSI the new one that they gave me says 110 kPa 16 PSI which one should I use I'm going to leave the original 145k PA on the truck why would they change it? All opinions welcome take care

on the truck 145 kpa part number
HC34-8101-CA

Aug 2, 2019 | 05:26 AM

senix

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From: Frederick, MD

they gave you a cap for the previous generation caps. Take your old one in and have them match it up.

Aug 3, 2019 | 01:50 PM

radium

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Okay thanks but that doesn't answer my question that number I gave you is what's on the truck now the one they're giving me is a lot less pressure can somebody with a 2017 tell me what part number they have on their vehicle that part number I gave above is what's on my truck now for the last hundred and fifty thousand miles thanks again

Aug 4, 2019 | 08:08 AM

senix

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From: Frederick, MD

Interesting enough, I pull my cap off this morning and 16psi is what I have. mine is a 2013 Model.

Aug 4, 2019 | 11:10 AM

radium

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Wow thanks for taking the time and looking that's very interesting this maybe explains why some trucks are eating radiators I wonder why mine has the higher pressure doesn't make any sense thanks again take care

Aug 4, 2019 | 05:30 PM

radium

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Well I guess I'll put the new one on I hope I don't blow anything up with my luck I'll lose the radiator tomorrow after 157000 miles lol

Aug 4, 2019 | 07:32 PM

bobcat67

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Might be best to hold off, I'm no Ford parts guy, but if it had a 21 psi cap on it, I'd put a 21 psi cap back on it. It's quite possible that the newer ones have higher rated caps on them for a reason.

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Aug 4, 2019 | 08:06 PM

bobcat67

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Quote:

Originally Posted by radium

My 2014 has a 16 psi, as does my 2016 however after looking up on rockauto they offer both caps under different names, but I found this part number under the second place I decided to look.
https://www.rockauto.com/en/catalog/...iator+cap,2068

Aug 4, 2019 | 08:23 PM

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radium

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From: upstate New York

Thank you for looking that up I'll try calling ford tomorrow or getting a hold of another dealership mine sort of useless LOL I'll put the same back on there must be some reason for it . My friend 2019 6.7 has the smaller pressure radiator cap this is too funny thanks again take care