Official Cummins 6cta 450C thread

Dealer said mine are 450 hp not really sure can anyone look up the serial number for me
SERIAL NUMBER: 46488081
 
Vetman001 said:
Dealer said mine are 450 hp not really sure can anyone look up the serial number for me
SERIAL NUMBER: 46488081
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https://apps.apple.com/us/app/quickservemobile/id917424121

Plate says you are 450hp... download the app...lots of info from Cummins site
8AF77EE4-314C-4517-A369-F051C8A051BE.jpeg
 
Vetman001 said:
Thank you so much! Good motors ?
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2005 was first year they changed to electronic... yes base mechanical was/is bullet proof. Only weakness is valve adjustment...if you’re sure in its recommended service life they have been adjusted you are good...if not get them adjusted
 
Blueone said:
2005 was first year they changed to electronic... yes base mechanical was/is bullet proof. Only weakness is valve adjustment...if you’re sure in its recommended service life they have been adjusted you are good...if not get them adjusted
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1000 hour service completed 20 hours ago along with valve adjustment
 
So what is the actual part number (or a link would be even better) for the radiator cap for the 6CTA engines? My prev owner left me 3 spare radiator caps. All three are obviously different. Two of them have been used. (If you knew my P.O. you'd understand - these aren't all necessary "spare" parts, LOL). But even the unused one is in an opened bag, so I don't know whether to trust the p/n on the bag.

What is the actual, proper, radiator cap for these engines?
 
scooper321 said:
So what is the actual part number (or a link would be even better) for the radiator cap for the 6CTA engines? My prev owner left me 3 spare radiator caps. All three are obviously different. Two of them have been used. (If you knew my P.O. you'd understand - these aren't all necessary "spare" parts, LOL). But even the unused one is in an opened bag, so I don't know whether to trust the p/n on the bag.

What is the actual, proper, radiator cap for these engines?
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It's a 15lb cap, you can find them at auto/truck parts store.

or this should be what you need https://www.sbmar.com/product/cummins-marine-coolant-fill-cap/
 
Blueone said:
Cummins QuickServe Online

@scooper321 You can use your engine serial number to find the part number you need
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Thanks. That’s a helpful site if you know the serial number of the part you’re looking for. But typing in something generic like “radiator cap”, or trying to search from a mobile device, doesnt really find me what I’m looking for. Hopefully someone can just give me the part number. It’s the standard 6cta-8.3m engines we all have. Diamond 450s.
 
scooper321 said:
thanks, I saw that one. But I’m trying not to spend $32 for a radiator cap. Tony sells good stuff, but some of what he sells it is overkill, and some of the other stuff is overpriced.
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FWIW, I just went to a couple auto parts stores until I found them. Don't remember where or the price but pretty sure one side or the other from 10 bucks.
 
Woody said:
FWIW, I just went to a couple auto parts stores until I found them. Don't remember where or the price but pretty sure one side or the other from 10 bucks.
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Thanks. I’m ok doing that. But I don’t know that the correct ones are on the engines right now, so I can’t take one with me. That’s why I need to confirm the p/n.
 
scooper321 said:
Thanks. That’s a helpful site if you know the serial number of the part you’re looking for. But typing in something generic like “radiator cap”, or trying to search from a mobile device, doesnt really find me what I’m looking for. Hopefully someone can just give me the part number. It’s the standard 6cta-8.3m engines we all have. Diamond 450s.
Click to expand...
cap.JPG
 
scooper321 said:
Thanks. That’s a helpful site if you know the serial number of the part you’re looking for. But typing in something generic like “radiator cap”, or trying to search from a mobile device, doesnt really find me what I’m looking for. Hopefully someone can just give me the part number. It’s the standard 6cta-8.3m engines we all have. Diamond 450s.
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No you put in your engines serial number and all its parts come up
 
Blueone said:
No you put in your engines serial number and all its parts come up
Click to expand...

I did that. I've used the site before. But as I said, finding a radiator cap isn't as easy on that site as finding a hose or a pump. I couldn't find it on there. If you've located it, please post the link.
 
I have different engines but it was right on parts website under the systems category "Heat Exchanger Upfit".
For me it was:
  • Part Number: 3393978
  • Description: Filler Cap
 
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