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🛠️ Upgrade your ride, protect your power — the ultimate catch can for Ford legends!
The K&N Air Oil Separator (81-0800) is a vehicle-specific catch can designed for 2011-2023 Ford F150 and 2017-2023 F150 Raptor models. It efficiently captures oil blowby to prevent engine contamination, power loss, and intake manifold buildup. Featuring OEM-style quick-connect hoses and a high-capacity reservoir, it installs in about 30 minutes without special tools. Built for durability and backed by a lifetime limited warranty, it’s a must-have upgrade for maintaining peak engine performance.






| ASIN | B0CDM8H4CD |
| Best Sellers Rank | #42,061 in Automotive ( See Top 100 in Automotive ) #13 in Automotive Replacement Fuel & Water Separators |
| Brand Name | K&N |
| Customer Reviews | 4.4 4.4 out of 5 stars (192) |
| Fit Type | Vehicle Specific Fit |
| Included Components | Oil Catch Can, hose |
| Item Type Name | Catch Can |
| Item Weight | 2.5 Pounds |
| Manufacturer | K&N Engineering, Inc. |
| Manufacturer Part Number | 81-0800 |
| Manufacturer Warranty Description | 3 Months |
| Model Number | 81-0800 |
| OEM Equivalent Part Number | 81-0800 |
| UPC | 024844392770 |
| Unit Count | 1.0 Count |
A**I
Perfect fit, easy install, K&N quality everything.
Perfect fit on my 2023 3.5l Lariat ecoboost. Easy. Took about 20-25 minutes in total.
L**N
Seems legit.
Catch can seems well built. Mount seems well made. The hoses are OEM quality, just bit too long for my 2020 F150. Hardware that holds the catch can to the mount stripped out. So I made it mount another way. We will see how well it works in the next few months. The 6 oz capacity seems very nice.
B**O
Amazing product
Looks amazing maybe even oem really easy install took maybe 20 minutes very high quality
D**O
Works as intended.
Works as it should, catches and filters. After every oil change (3k miles) i check it and its no way near full. Definitely watch youtube videos on how to install in your vic.
J**P
K&N missed on hose length.
Update: 5/10/24 K&N had wonderful customer service and shipped the correct length hose. I forgot to take an after photo but it's fantastic now. I installed this quickly and easily on my 2017 f150 2.7. I immediately ran into the same issue as many with the length of the hose coming from the valve. After spending an hour trying to change configuration I've arrived at the conclusion that k&n just missed the mark. You can see in the photo that the cover slightly kinks the hose. I was going to return but I see that a few other people have gotten replacement hoses from the manufacturer. I am going to attempt to do the same and will update how things go.
B**N
What you’d expect from K&N
2014 F-150 with the 5.0. | 74k mileage As expected from anything K&N, great build quality and overall feels like a solid product. I installed this and did a little cleaning of the throttle body and intake manifold. And from the looks of it, it was definitely needed and will be worth it. Installation was fairly easy and straightforward. The documentation they provide is for a 2015+ F-150 5.0 engine bay. The battery box is angled differently, so routing the lines aren’t exact to the diagram. I had to remove the intake manifold nub/bong or whatever it’s called in order for it click connected. It was too tight with the hose ends and the angle it needed to click in place. You’ll see, and it’s easy to remove, click connect and screw back in place. I plan on installing one on any vehicle I have in the future as well, and will check to see if K&N offers one for it.
W**H
Easy installation. Clear instructions.
Needed this long ago. This is PCV passenger side. I like it . Easy installation. Be nice if they had the CCV driver side to keep the intercooler clean.
M**Y
K&N makes great stuff, this was easy to install and works well!
This was super easy to install and came with everything you need. The metal is great quality, the threads are done well and the hoses are better quality than what comes from the factory. I live in a semi cold area that gets down to the 10s and 20s and this catches a fair amount of blow by. I mounted the mount to the battery holder and its been a perfect location for it.
O**O
Excelente Producto
Excelente Producto para mi F150 2016!! Fácil de instalar!!
B**E
Catch Can
More expensive but comes with proper OEM connections!
F**K
Catch Can
Funktioniert top.
T**.
Passt perfekt, großer Behälter
Preislich und qualitativ steht das Teil dem JLT in nichts nach, Installation ist mit der guten Anleitung problemlos möglich
C**T
Everything for well and was quality manufacturing.
Good manufacturing with quality finish. Worth paying the extra compared to many on the market knowing the tubes and connections are original manufacturers standards and fit my 2022 F150 perfectly . The installation went as easy as demonstrated on YouTube clips and it’s the first time I’ve ever worked on a vehicle.
Trustpilot
5 days ago
2 days ago