Dorman 918-359 PCV valve diaphragm for the 2011-2019 Ford F-250 Super Duty V8 6.7L and other vehicles replaces the diaphragm in the air separator assembly. On the diesel engine, that assembly filters crankcase blowby gases before they return to the intake.
- Dorman OE FIX repair for the diaphragm that clogs with oil and carbon deposits
- Replaces only the diaphragm, not the whole air separator assembly
- Swaps the failure-prone part without disconnecting the oil separator
Quick facts
- Part: Dorman 918-359 PCV valve diaphragm
- Fits: 2011-2019 Ford F-250 Super Duty V8 6.7L and other vehicles
- Material: Plastic, steel and rubber
- Condition: New
Once the diaphragm clogs, the separator assembly can fail, and the excess crankcase pressure can show up as oil leaks, a high idle or lower engine performance. Before you replace the diaphragm, rule out other causes of the oil leak or high idle, since the separator is only one place those problems can start.
Fits
The 2011-2019 Ford F-350 Super Duty V8 6.7L and the 2011-2019 Ford F-450 Super Duty V8 6.7L take this diaphragm, and so do more trucks. The 2011-2019 Ford F-250 Super Duty V8 6.7L takes one. If your truck is not named here, look for it in the "Vehicles it fits" section.
Specifications
Fit and size
- Quantity per vehicle: 1
- Diameter: 3.25 in
- Thickness: 0.025 in
Build and materials
- Material: plastic, steel and rubber
- Condition: new
- Country of origin: Taiwan
In the box
One diaphragm, one spring and one cover.
Interchange: DC3Z6A785C · DC3Z6A785D · FC3Z6A785C · EOS5
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
DC3Z6A785C, DC3Z6A785D, FC3Z6A785C, EOS5
Frequently Asked Questions
Does the Dorman 918-359 diaphragm fit a 2011-2019 Ford F-350 Super Duty V8 6.7L?
Yes. Dorman 918-359 fits the 2011-2019 Ford F-350 Super Duty V8 6.7L. If your truck is not named here, look for it in the "Vehicles it fits" section.
Does the Dorman 918-359 diaphragm include the spring and cover?
Yes. Dorman 918-359 includes one diaphragm, one spring and one cover.
What are the diameter and thickness of this Dorman PCV valve diaphragm?
The diameter is 3.25 inches and the thickness is 0.025 inch.
Do I have to replace the whole air separator to use this PCV valve diaphragm?
No. It replaces just the diaphragm, so the oil separator does not have to be disconnected and replaced.
What materials are used in the Dorman 918-359 PCV valve diaphragm?
It is made of plastic, steel and rubber, and its country of origin is Taiwan.
