Dorman - HD Solutions Engine Crankcase Breather Element P/N:904-7950
Dorman 904-7903 crankcase breather element for the 2011 Peterbilt 365 6-cylinder 10.8L, 12.5L or 14.9L, the 2011-2021 365 6-cylinder 8.9L, 11.9L or 12.9L, the 2013 365 6-cylinder 10.8L, the 2016-2021 365 6-cylinder 10.8L and other vehicles replaces a breather filter that is missing, cracked or clogged. It filters the vapors that the engine's crankcase ventilation vents out.
Replace the element when it is missing, cracked or clogged. Oil seepage near the breather can be a sign, but a blocked vent line or worn piston rings can be behind it too, so find the cause before buying.
This breather element also fits the 2018-2021 Peterbilt 389 and the 2014-2021 Peterbilt 579, and each takes one. Owners of other Peterbilt, Kenworth or Freightliner trucks, or of the other makes and models, can search for their own truck in the "Vehicles it fits" section.
Fit and size
Build and materials
One filter element.
Interchange: 840.CF9874 · CV 50625
2869874 · 2895324 · CV50626
This part cross-references / interchanges with the following part numbers:
Does the Dorman 904-7903 crankcase breather element fit the 2014-2021 Peterbilt 579?
Yes. Dorman 904-7903 fits the 2014-2021 Peterbilt 579, and each takes one element. Owners of other trucks can look theirs up in the "Vehicles it fits" section.
What is the Dorman 904-7903 breather element made of?
Dorman 904-7903 has a plastic housing and polypropylene filter media, with a black finish. It mounts as a cartridge.
Does this crankcase breather element come as a single piece?
Yes. The package holds one filter element, and the filter is replaceable. The listing is a single part, and each truck it fits takes one.
How can I tell if the crankcase breather element is damaged or clogged?
With the engine off and cool, look for an element that is missing, cracked or visibly clogged. A shop can test the rest of the crankcase ventilation.
Can an engine crankcase breather element be cleaned and reused?
No. The Dorman 904-7903 element is not reusable, so a clogged one is replaced rather than cleaned.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.