SKU: 98999473542

COBB Air-Oil Separator for 2013-2018 Ford Focus

Sale price$193.50 Regular price$215.00
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Ships within 48 hours · Estimated delivery Jul 22 - Jul 27

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Description

COBB Air-Oil Separator for 2013-2018 Ford FocusDESCRIPTION The COBB Air Oil Separator is placed within your Ford Focus ST's crankcase ventilation system and helps to prevent oil vapors from being introduced into the intake system. The COBB Air Oil Separator is of our own design and has been in the works for years, making tweaks and updates to ensure that it is a seamless installation, clears any third party emissions, an is the perfect upgrade to your engine. Ford's EcoBoost engine doesn't have a

DESCRIPTION

The COBB Air/Oil Separator is placed within your Ford Focus ST's crankcase ventilation system and helps to prevent oil vapors from being introduced into the intake system. The COBB Air/Oil Separator is of our own design and has been in the works for years, making tweaks and updates to ensure that it is a seamless installation, clears any third-party emissions, an is the perfect upgrade to your engine.

Ford's EcoBoost engine doesn't have a great spot to tap in, so we went with the route of incorporating the factory breather plate with a spacer plate that we created from 33% glass-filled nylon and is injection molded for perfect fitment. The COBB oil drain plate is sandwiched between the OEM air oil separator and engine block. It uses an additional COBB provided OEM gasket to maintain a leak-free interface with the engine block.

The COBB Air/Oil Separator system installs in series with the original PCV circuit, forcing air from the crankcase through a swirl pot and series of baffles that promote heavier oil particles in the blowby vapor to condense and collect as a liquid at the base of the canister. A drain line returns this condensed liquid oil to the crankcase.

This AOS kit that utilizes a drain-back system keeps valves cleaner and reduces chances of detonation by removing oil particles from the PCV gasses going to the intake manifold. This equates to a cleaner and stronger engine that can push more power with less maintenance or risk.

A Sound Symposer Delete is required to install this AOS. If you don't have one, follow this link to our COBB Sound Symposer Delete Kit.

WHY?

The COBB Ford Air/Oil Separator helps to prevent crankcase oil vapors from recirculating back through your engine's intake system.

Oil vapors passing through your engine's intake system lower the effective octane rating of fuel and can contribute to both oil and carbon buildup over time.

FEATURES
Air/Oil Separator for Ford Focus ST 2013-2018
  • Billet Aluminum Tank Design
  • Bright Black Dip Anodizing
  • Additional Baffling At Both Plate and Canister
  • Laser Etched COBB Logo
  • Designed 100% in-house
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 98999473542

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4.7 ★★★★★
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C
Verified Purchase
Chris
Whiting, US
★★★★★ 5
That it fits
Just as good as the factory and over half cheaper
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
R
Verified Purchase
RUGRAD9093
Chelsea, US
★★★★★ 5
Very Good At Capturing Debris Of All Sizes
I have been using this for my 2015 Acura RDX for several years and each time I replace it, the old filter seems to do the job in capturing big and small debris.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 29, 2025
H
Verified Purchase
Hannah
Louisville, US
★★★★★ 5
Great oil
Size: 1 Quart, Style: 6-Pack, Configuration: Euro LX 0W-30
Great oil I always use for my vw atlas. I even got an oil analysis after 8k miles and was told it looks great and could be ran even longer.
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Reviewed in the United States on May 15, 2026
A
Verified Purchase
apex
Lake Worth, US
★★★★★ 5
This oil is hard to find locally and arrived on time.
Size: 1 Quart, Style: 6-Pack, Configuration: Euro LX 0W-30
This oil is hard to find locally. It arrived on time and every bottle was well sealed so not a drop leaked. It also was priced very fairly.
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Reviewed in the United States on April 8, 2026
J
Verified Purchase
jim
Omaha, US
★★★★★ 5
This product is saying that it was not yet delivered, but it was delivered.
Size: 1 Quart, Style: 6-Pack, Configuration: Euro LX 0W-30
The product is a very good product, just like all Pennzoil synthetic oil that I have used.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 6, 2026

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