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Old 12-05-2013, 05:59 PM   #1
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Cat C9 Designation

This may seem like a dumb newbie kind of question, but in reading these threads, I periodically see a four number designation used for Cat engines beyond the C7, C9 etc. I will see numbers like 3126. What do those numbers mean? I have a 2005 Country Coach Allure with a 400 HP C9, how do I find out those designation numbers for my engine?
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Old 12-05-2013, 06:11 PM   #2
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I sure I'll get corrected but I think the c-7 took over the 3126 the number 7,9,13 are engine sizes in liters. With your engine serial number you can call cat. and get any info you can think of including how it did on Dino test.
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Old 12-05-2013, 08:45 PM   #3
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My C-13 is actually 12.5 liters.
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Old 12-05-2013, 08:56 PM   #4
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Im a caterpillar mechanic and can help you guys with anything you need. You are correct c7 c9 took over 3176 3126 just like c15 3406e and so forth. They rounded up lol
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Old 12-07-2013, 03:10 PM   #5
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Quote:
Originally Posted by slemnah View Post
My C-13 is actually 12.5 liters.
C-9 is actually 8.9 to.
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Old 12-10-2013, 06:11 PM   #6
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Quote:
Originally Posted by Tha_Rooster View Post
C-9 is actually 8.9 to.
CAT says the C-9 is 9.3 liters (567 ci)
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Old 12-10-2013, 09:11 PM   #7
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CAT says the C-9 is 9.3 liters (567 ci)
Sorry, I didn't know they made different size C9s. Looks like 2007 and up is 9.3.
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