Steeda Focus ST Oil Separator (15-18 ST & RS)

Steeda Focus ST Oil Separator (15-18 ST & RS)
$30.00 (32%)

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Steeda Sales & Service, LLC
555 3717


The Steeda Focus ST Oil Separator for 2015-2018 2.0L/2.3L Ecoboost MK3 Ford Focus ST/RS reduces detonation, oil burning and deposits on the valves by removing oil drawn through the PCV system before it can contaminate the intake charge. This is also very helpful with these turbo applications, where it is essential to keep oil from entering the turbo.

Excess crankcase pressure (sometimes known as "blow-by") is vented from the crankcase through the PCV system, where it is drawn into the intake manifold and returned by the engine. This re-circulated air contains aerated oil from the crankcase which is burned by the engine.

Supercharged, nitrous-boosted and high mileage engines often draw excessive amounts of oil into the engine through the PCV system. The Steeda Focus ST Oil Separator for 2015,2016,2017,2018 Focus ST/RS plugs into the PCV hose between the PCV valve and the intake manifold and removes aerated oil from the re-circulated air and collects it in a tube that can be drained and recycled. It's designed to maintain the factory sensor too in the PCV system.

The Steeda Focus ST Oil Separator includes the oil separator and all required hardware. Designed for the Focus, this kit features a clear bowl and is designed for a 1/2" PCV system.

Product Benefits:
  • Reduces detonation, oil burning, and deposits on the valves.
  • Easy and quick installation.
  • Increased engine component life
  • Designed for a 1/2" PCV system

CA Residents: Cancer and Reproductive Harm WARNING

Fitment & Features


Manufacturer: Steeda Autosports
Made in USA: Yes

Installation Information:

Level of Difficulty: Difficult
Install Time: About 1 Hour
Tools Required: 1/4 Ratchet, 8 mm Socket, 14 mm Wrench, Screwdriver, Hose Cutter, 3/8 Ratchet, 3/8 Extension, 15 mm Socket, 10 mm Socket, T30 Torx Bit
Print Instructions:
Note: Removal of Cowl Recommended.

Vehicle Fitment:

Fits Model Year: 2015, 2016, 2017, 2018
Focus Model: RS, ST

Customer Reviews

Good Quality
So far so good! The separator is nicely built and installation took about 20 minutes only because I have a custom intake tube with no quick connector so I had to rig my own. I've already caught some blow-by in the canister, but not as much as I thought, so that's good. Overall I'm glad I bought this little piece of mind. 2015 Focus ST, full bolt-ons and custom tune.
Did you find this helpful?  4 of 4 Found Helpful
Reviewed by: (Verified Buyer) Paul from . on 2/25/2019
I'm a skinny guy so I didn't have to take engine cover nor intake. I did have to cut supplied hoses for a nice fit how instructions say. Highly recommend.
Did you find this helpful?  11 of 11 Found Helpful
Reviewed by: (Verified Buyer) Hector Hernandez from . on 7/3/2018
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