• Photo - Primary
  • User 1
  • User 1
  • User 1
  • Logo Image

Mishimoto 18+ Audi B9 S4/S5 Baffled Oil Catch Can- PCV Side

Low stock! Only 7 left
$429.95
$429.95 $473.00
Shipping calculated at checkout.
  • Fully secure checkout
  • Trusted by thousands
  • Rated and reviewed

Question about this product?

We're happy to help.

Up to 9% off

Give the 3.0T TFSI powering your 2018+ Audi S4 or S5 the extra layer of defense that it needs with the Mishimoto Direct Fit Baffled Oil Catch Can. Volkswagen and Audi were on the front lines of the direct injection revolution, which means they were also one of the first to implement a means to protect against blow-by gasses. While the factory AOS system does filter out some oil and fuel vapors, the harmful contaminants still make their way to the intake valves. The Mishimoto Direct-Fit Baffled Oil Catch Can Kit for your 2018+ Audi S4/S5 installs in line with the PCV system right after the factory separator for immediate protection of the intake components. Our catch can features a patent pending 2-port Compact Baffled Oil Catch Can with a 50-micron bronze filter and an internal baffle to better separate oil from the crankcase vapors. Our kit also includes a set of direct fit hoses for a simple installation, including two Mishimoto One-Way Performance Check Valves to prevent your catch can from becoming pressurized. In order to simplify servicing, our kit includes a petcock drain kit, so draining captured blow-by is a cinch. The Mishimoto 2018+ Audi B9 S4/S5 Direct Fit Catch Can Kit also includes the Mishimoto Lifetime Warranty for a worry-free installation. Our catch cans are different from most air-oil-separator (AOS) systems on a few levels. First, our catch cans are not heated. This means that all of the blow-by is able to condense in the can, including low-octane oil vapors and contaminated fuel vapors. Most AOS systems also drain the blow-by back into the oil pan, while our catch cans trap the blow-by and keep it out of the engine permanently. If you've seen what We've seen in the bottom of our catch cans, you won't want that draining back into your oil either.

Installation Instructions
  • Single can mounts in line with the PCV system to separate oil from air using a 50-micron bronze filter
  • Patent pending billet 6061 aluminum can sealed with Viton(TM) O-rings
  • Installs in under 30 minutes

This Part Fits:

Year Make Model Submodel
2019-2021 Audi S4 Premium
2018-2021 Audi S4 Premium Plus
2018-2021 Audi S4 Prestige
2019-2021 Audi S5 Premium
2018-2021 Audi S5 Premium Plus
2018-2021 Audi S5 Prestige
Mishimoto 18+ Audi B9 S4/S5 Baffled Oil Catch Can- PCV Side

$429.95

  • Fast shipping

    Ordered a product and it arrived the next day. Super impressed with the speed and the careful packaging.

    Jordan Smith
    Seattle, Washington

  • Excellent service

    Customer support was helpful; they resolved my issue in minutes. Really appreciated the follow-up email to ensure satisfaction.

    Taylor Christos
    Austin, Texas

  • Great selection

    Wide variety of products across the range. Found everything I needed in one place, very convenient.

    Alex Williams
    London, England

  • Top quality

    The product I bought exceeded my expectations. Top-notch quality, thoughtful design, and it came beautifully packaged.

    Sam Davis
    San Francisco, California

  • Reliable store

    Have ordered multiple times, always received exactly what was described. Products are genuine and fully functional.

    Casey Brown
    Denver, Colorado

  • User-friendly website

    Easy to navigate and make purchases. A hassle-free shopping experience with clear descriptions and transparent pricing.

    Riley Wilson
    Boston, Massachusetts

  • Smooth checkout

    Checkout was quick and straightforward. My order confirmation came through instantly, and everything arrived exactly as expected.

    Morgan Lee
    Portland, Oregon

  • Great value

    Really pleased with the quality for the price. The product felt premium, worked perfectly out of the box, and was well packaged.

    Jamie Carter
    Manchester, England

Can I return a part after it has been installed?

Generally, installed or used performance parts cannot be returned. We strongly recommend verifying vehicle fitment and inspecting the product before installation.

Can I cancel my order after it has been placed?

We begin processing orders as quickly as possible. If you need to cancel, contact us immediately. Once an order has entered fulfillment, been submitted to a supplier, or shipped, cancellation may no longer be possible.

Will this part fit my vehicle?

Fitment varies by year, make, model, trim, engine, and drivetrain. Use our vehicle fitment information to confirm compatibility. If you're unsure, contact us with your VIN and we'll help verify fitment before you order.

How do I know if this is the right upgrade for my build?

Not every upgrade makes sense for every vehicle or build. Tell us your vehicle, current modifications, and performance goals, and we'll help determine whether this product is a good fit.

Are the products you sell authentic?

Yes. We source products through established manufacturers and authorized distribution channels. We do not sell counterfeit or imitation performance parts.

Is professional installation recommended?

For most performance components, yes. Proper installation is critical for fitment, reliability, and performance. Some products may also require specialized tools, programming, tuning, or additional supporting modifications.