10 Best Ford Focus ST Oil Catch Cans for Cleaner Intake Performance in 2026

If you’re shopping for a ford focus st oil catch can, the goal is simple: keep oil vapor out of the intake system and help reduce carbon buildup over time.

Below, we’ve narrowed the field to ten strong options, including direct-fit choices and universal kits, so you can match the right setup to your Focus ST and driving goals.

Best 10 Ford Focus St Oil Catch Can Picks for 2026

PCV-Side Baffled Pick – Mishimoto Baffled Oil Catch Can

If you want a Ford Focus ST oil catch can that installs cleanly on the PCV side, this Mishimoto unit is built for a vehicle-specific fit. It uses a single can inline with the PCV system and a 50 micron bronze filter to help separate oil particles before they enter the intake tract.

Best For: Focus ST owners who want a direct-fit PCV-side setup with included mounting hardware and pre-molded hoses.

Pros:

• Application-specific bracket for the 2013-2018 Focus ST
• 50 micron bronze filter helps separate oil particles
• Black hoses come pre-molded for a more reliable install
• Catch can mounts conveniently next to the transmission

Cons:

• Designed for the PCV side only
• Vehicle-specific fit limits use outside the listed application
• Larger than a universal can kit

This is a strong choice if you value a tidy, factory-style installation over a universal setup. The included bracket, hoses, clamps, and lifetime warranty make it a practical buy for Focus ST owners who want a purpose-built solution.

Quick-Install OEM-Style Option – K&N 81-0813 Oil Catch Can

The K&N 81-0813 is a Ford Focus ST oil catch can option aimed at simple installation and intake protection. It is designed to help reduce oil contamination from blowby, while premium OEM-style connectors and robust hoses keep the setup straightforward.

Best For: Drivers who want a quick-install catch can with OEM-style connectors and minimal fuss.

Pros:

• Designed to help protect the engine from oil contamination due to blowby
• Engineered to reduce oil and contaminant build-up in the intake tract
• Premium OEM-style connectors and robust hoses
• Claims a 30-minute quick and easy installation

Cons:

• Warranty coverage is only 3 months
• Less detailed included-component info than some competitor kits
• Not as explicitly Focus-ST-specific in the supplied notes

If you want something simple and compact, this K&N can fits the practical end of the market. It emphasizes easy installation and intake cleanliness, making it a sensible pick for owners who prioritize convenience.

Front PCV Separator – J&L Oil Separator Co. 3.0

For a Ford Focus ST oil catch can on the front PCV side, the J&L Oil Separator Co. 3.0 focuses on easy draining and compact oil control. Its knurled tank base makes removal simple, and the O-ring seal is designed to help prevent leaks.

Best For: Focus ST owners who want a front PCV-side separator with easy draining and a compact reservoir.

Pros:

• Compatible with 2013-18 Focus ST front PCV side
• Knurled tank base makes draining easier
• O-ring seal is designed to help prevent leaks
• Fine mesh stainless steel filter traps oil vapors

Cons:

• Tank holds only 3 oz of fluid
• Requires checking and draining based on mileage intervals
• Primarily suited to the front PCV side application

This separator is a good match if you want a focused, low-maintenance-style solution with simple drain access. The compact tank and filtering approach make it appealing for drivers who prefer a straightforward PCV-side setup.

Universal Baffled Budget Pick – EVIL ENERGY 300ML Oil Catch Can

The EVIL ENERGY oil catch can is a universal Ford Focus ST oil catch can alternative if you want a baffled aluminum setup and included hose kit. It features a removable baffle and can be run in-line between PCV hoses or with a breather filter, depending on your application.

Best For: Drivers looking for a universal baffled catch can with included hose kit and flexible PCV-system compatibility.

Pros:

• 300ml aluminum can with a removable baffle
• Includes 5ft NBR fuel hose and installation hardware
• Can be installed in-line between PCV hoses or as a vent system
• Universal fit works with many vehicle types

Cons:

• Universal fit requires making sure there is enough installation space
• Cold-weather moisture can increase freezing risk
• May require weekly cleaning in freezing temperatures

This is the most flexible option in the group, but it also asks for more attention during installation and cold-weather use. If you want a broad-fit can with a hose kit and baffled design, it delivers solid utility for the price class.

PCV-Side Direct-Fit – Mishimoto Baffled Oil Catch Can for Focus RS

If you’re shopping for a ford focus st oil catch can setup and want something with a more vehicle-specific install, this Mishimoto baffled can is built for the PCV side and comes with application-specific hardware. It uses a 50 micron bronze filter to separate oil particles, and the included pre-molded hoses and quick-disconnect fittings are aimed at making the install cleaner and more repeatable.

Best For: Ford Focus RS owners who want a compact, PCV-side catch can with a tailored fit and included hardware.

Pros:

• Application-specific bracket and direct-fit hoses are included
• 50 micron bronze filter is designed to separate oil particles
• Compact layout keeps the can conveniently next to the transmission
• Mishimoto Lifetime Warranty adds long-term support

Cons:

• Fitment is specific to the Ford Focus RS 2016-2018, not a universal kit
• Only one can is included for inline PCV-side use

This is the most plug-in-friendly option in the group, but it is also the most vehicle-specific. If you want a purpose-built ford focus st oil catch can style solution with included brackets and hoses, this is the one that prioritizes fit and simplicity over universal flexibility.

Universal Budget Pick – EVIL ENERGY 300ml Baffled Oil Catch Can

For a ford focus st oil catch can approach that keeps costs and compatibility broad, this EVIL ENERGY kit is a universal baffled option with a 300ml aluminum tank. It includes NBR fuel hose, bracket hardware, and threaded ports, so it suits buyers who want a flexible PCV-system setup and have room for a universal install.

Best For: Drivers who want a universal baffled catch can kit with included hose and hardware.

Pros:

• 300ml aluminum tank with a removable baffle
• Includes NBR hose, clamps, bracket, and adapter hardware
• Can be used in-line between PCV hoses or as a vent system
• High wear and heat resistance hose material

Cons:

• Universal fit means installation depends on available space
• Cold-weather moisture and freezing risk may require frequent cleaning
• Not a model-specific kit for the Focus ST

This kit makes the most sense if you want a straightforward universal option rather than a vehicle-specific setup. It covers the basic hardware well, but the install and maintenance demands are more on you, especially in colder weather.

Model-Specific Fit – Moroso 85665 Black Air Oil Separator

If you want a ford focus st oil catch can that is made for the platform, this Moroso air-oil separator is listed as fitting 2013-2018 Ford Focus ST models. The small-body black aluminum design is aimed at buyers who want a dedicated separator rather than a universal can, with the fitment already matched to the car.

Best For: Ford Focus ST owners looking for a model-specific air-oil separator.

Pros:

• Explicitly fits 2013-2018 Ford Focus ST
• Small-body design may help with tighter engine bays
• Black finish gives it a clean, understated look
• Simple air-oil separator/catch can format

Cons:

• Supplied details are limited compared with more fully kitted options
• No hose, bracket, or capacity specs are listed in the provided notes

This is the clearest platform match in the lineup for Focus ST shoppers. If fitment matters more than accessory count, the Moroso unit is the most direct choice here.

Best with Extra Features – EVIL ENERGY 300ml Blue Catch Can

If you need a ford focus st oil catch can that can also work on other cars, this EVIL ENERGY kit is a flexible universal option. It uses a baffled 300ml aluminum tank with 3/8-inch hose and M16x1.5 fittings, so it suits builds where you have room to mount a compact separator and want either a sealed PCV setup or a vented breather-filter setup.

Best For: Universal installs where you want a simple, budget-friendly catch can with multiple plumbing options.

Pros:

• Universal fit for most cars with enough installation room
• 300ml aluminum tank with baffled design
• Can be used with or without the breather filter
• Includes 2.6 ft hose and M16x1.5 inlet/outlet threads

Cons:

• Not vehicle-specific to the Focus ST
• Requires checking fitment and available space before buying
• Needs weekly cleaning in freezing conditions per the notes

This is the most adaptable choice in the group, but it makes the most sense if you’re comfortable confirming routing and mounting details yourself. For drivers who want a straightforward universal separator rather than a dedicated Focus ST kit, it’s a practical starting point.

Vehicle-Specific Fit – Moroso Small Body Focus ST Catch Can

For a ford focus st oil catch can that’s made specifically for the platform, this Moroso air-oil separator is the most direct fit in the list. The notes call out compatibility with 2013-2018 Ford Focus ST models, which makes it appealing if you want to avoid the guesswork that comes with universal kits.

Best For: 2013-2018 Focus ST owners who want a dedicated, vehicle-specific catch can.

Pros:

• Explicitly fits 2013-2018 Ford Focus ST
• Small-body design for a compact installation
• Aluminum exterior
• Purpose-built as an air-oil separator kit

Cons:

• Fitment is limited to the listed Focus ST years
• No hose or plumbing details are provided in the notes
• Raw finish may not match every engine bay style

If your priority is a cleaner, more vehicle-specific solution, this Moroso unit stands out. It’s the easiest match here for Focus ST owners who want a product called out for their car rather than adapting a universal can.

Universal Red Option – EVIL ENERGY 300ml Red Catch Can

This red EVIL ENERGY kit is another universal ford focus st oil catch can option for drivers who want a simple aluminum separator with flexible plumbing. It uses the same 300ml baffled tank format, 3/8-inch hose, and M16x1.5 threads, and it can be set up either as a vent system with the breather filter or as a sealed can in line with the PCV hoses.

Best For: Buyers who want the same universal setup as the blue model, but in red.

Pros:

• Universal fit for most cars with enough room
• 300ml aluminum tank with baffled design
• Breather filter gives you vented or sealed installation choices
• Includes 2.6 ft hose and M16x1.5 inlet/outlet threads

Cons:

• Still requires fitment confirmation for the Focus ST
• Weekly cleaning is recommended in freezing temperatures
• No vehicle-specific mounting details are provided

Functionally, this is very similar to the blue EVIL ENERGY can, so the choice comes down to preference and installation needs. If color is part of your engine-bay plan and you’re comfortable with a universal setup, it’s an easy alternative to consider.

How We Picked the Best Ford Focus St Oil Catch Can Options

We focused on fitment, baffling design, build quality, hose and fitting quality, ease of installation, and how well each option suits the Focus ST’s PCV setup. For a Ford Focus St Oil Catch Can, a proper application-specific design is usually the safest choice because it simplifies install and reduces guesswork.

We also weighed whether the can is truly direct-fit for the 2013-2018 Focus ST or a universal kit that may need more customization. That matters if you want a weekend install versus a more tailored project.

Quick Comparison: Direct-Fit Vs Universal

Direct-fit units are the easiest path for most owners. They typically connect cleanly to the PCV side and are designed around the factory layout, which helps minimize installation time and fitment issues.

Universal catch cans can still work well, but they’re better for buyers who are comfortable routing hoses, choosing mounting locations, and verifying compatibility. They often offer more flexibility, but that flexibility comes with more planning.

Key Buying Factors for Ford Focus St Oil Catch Can

PCV-Side Compatibility

Most Focus ST buyers want a PCV-side solution because that’s the common place to intercept oil vapor before it reaches the intake tract. Make sure the kit is explicitly compatible with the 2013-2018 Focus ST unless you’re choosing a universal setup.

Baffling and Separation Efficiency

A well-baffled can helps improve oil separation, especially on cars that see spirited driving, boost, or frequent short trips. If you want the best chance of reducing residue in the intake, baffling is worth prioritizing.

Can Size and Serviceability

A larger can may hold more collected oil, but it also needs to fit cleanly in the engine bay. Look for a design that’s easy to drain and inspect, since regular maintenance is what makes a catch can useful long term.

Hose Quality and Fittings

Good hoses, secure clamps, and properly sized fittings reduce leaks and simplify the install. Universal kits can be great values, but only if the included hardware is robust enough for engine-bay heat and vacuum use.

Who Should Buy Which Ford Focus St Oil Catch Can?

If you want the simplest upgrade, choose a direct-fit Focus ST-specific can from Mishimoto, J&L, or Moroso. These are the best fit for owners who want dependable installation and less trial-and-error.

If you prefer a more budget-friendly or customizable route, a universal EVIL ENERGY kit may make sense, especially if you’re comfortable with hose routing and mounting. For most daily drivers, the best Ford Focus St Oil Catch Can is the one that fits cleanly, seals well, and is easy to maintain consistently.