Standard Ignition Engine Oil Separator EOS4
Standard Ignition Engine Oil Separator EOS4 - view 2
Standard Ignition Engine Oil Separator EOS4 - view 3
Standard Ignition Engine Oil Separator EOS4 - view 4
Standard Ignition Engine Oil Separator EOS4
Standard Ignition Engine Oil Separator EOS4 - view 2
Standard Ignition Engine Oil Separator EOS4 - view 3
Standard Ignition Engine Oil Separator EOS4 - view 4

Standard Ignition Engine Oil Separator P/N:EOS4

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$173.99
MPN: EOS4
Item Package Quantity: 1
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Standard Ignition Engine Oil Separator P/N:EOS4
Standard Ignition Engine Oil Separator P/N:EOS4
$173.99

Manage crankcase ventilation and keep oil out of the intake path with the Standard Ignition Engine Oil Separator EOS4. This oil separator drops in as a direct-fit replacement for the 2016-2019 Ford F-250 Super Duty and the 2017-2019 Ford F-350, F-450 and F-550 Super Duty (see the Buyer's Guide tab for engine details). It separates oil mist from blow-by gases routed through the crankcase ventilation system, returning cleaner vapor toward the intake and helping the emissions system work as intended.

  • Restores emissions function: once installed, it addresses the loss of separator function that follows a cracked or leaking original unit.
  • Direct-fit design: installs out of the box for the listed applications, no modification needed.
  • Tested to OE specifications: validated against OE specifications for consistent performance and service life.
  • Global quality control: built with quality control maintained throughout the manufacturing process.

Signs the original separator may need replacing include oil pulled into the intake, oil residue in the ventilation hoses, and a cracked or leaking separator housing. Diagnose the underlying cause before replacing.

Interchange: 800-5997
8005997 · EOS103 · MSAD30002 · EOS203 · FC3Z6A785D · FC3Z6A785E · FC3Z6A785F

This part cross-references / interchanges with the following part numbers:

EOS103, MSAD30002, EOS203, FC3Z6A785D, FC3Z6A785E, FC3Z6A785F, 800-5997

Frequently Asked Questions

What does this oil separator do?

It separates oil mist from crankcase blow-by gases moving through the ventilation system, returning cleaner vapor toward the intake and limiting oil carryover.

Which vehicles does the EOS4 fit?

It is a direct-fit replacement for the 2016-2019 Ford F-250 Super Duty and the 2017-2019 Ford F-350, F-450 and F-550 Super Duty. See the Buyer's Guide tab for engine details.

Why would I need to replace the oil separator?

A cracked or leaking original unit loses separating function. Replacing it addresses that condition. Diagnose the cause of any oil or ventilation issue before ordering.

Is this a direct-fit part?

Yes. It is designed to install out of the box for the listed applications with no modification required.

What numbers does this part interchange with?

It cross-references 800-5997, 8005997, EOS103, MSAD30002, EOS203, FC3Z6A785D, FC3Z6A785E and FC3Z6A785F.

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