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K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can
K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can

K&N 20-23 GM 2500/3500 6.6L Oil Separator Catch Can

K&N ENGINEERING
Disponibilidad:
5+ en stock, listo para ser enviado

Ships same or next business day

SKU KNN81-0812
$157.99 - $157.99
$157.99
$157.99 - $157.99
$157.99
CALIFORNIA WARNING

Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts.

Not CARB legal – cannot ship to CA

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The K&N Air Oil Separator protects the engine and intake tract from blowby by capturing the oil in our industry leading high capacity reservoir. This helps prevent power loss and possible engine damage caused by blowby. The K&N Air Oil Separator is quick and easy to install in about 30 minutes with basic tools and uses factory-style hose connections to quickly snap on and off. The oil separator replaces the factory line from the crank case allowing the oil separator to be mounted to a coinvent location in your engine bay. No tools are needed to check and empty the oil collector reservoir. Each unit is engineered specifically for your vehicle and is backed by our No-Hassle Lifetime Limited Warranty.

This part also goes by the following cross reference.

Cross Reference Part Number:

About this Crankcase Ventilation (PCV)

The K&N ENGINEERING KNN81-0812 is part of the crankcase ventilation (PCV) system, which routes gases that escape past the pistons back into the intake to be burned, and separates oil out of them. When the system fails, crankcase pressure and oil consumption can rise quickly.

Frequently asked questions

What does the crankcase ventilation system do?

It relieves pressure inside the engine by drawing blow-by gases back into the intake, while an oil separator or valve keeps oil out of the intake. Correct crankcase pressure protects seals and gaskets.

What are the signs of a failed PCV valve or oil separator?

A whistling or howling noise at idle, rough idle, lean-running fault codes, higher oil consumption, oil leaks from seals, blue smoke, or suction at the oil filler cap strong enough to hold the cap down.

What should I replace along with it?

Crankcase vent hoses become brittle with heat and age, so inspect and replace cracked hoses and fittings at the same time. On many European engines, the valve cover and separator are serviced together.

Can I replace PCV components myself?

Many parts are accessible with basic tools, though some separators sit under the intake manifold. Handle old plastic fittings carefully, as they can break during removal.

How do I make sure this crankcase ventilation part fits my car?

Compare the part numbers listed on this page with the number on your old part or in your vehicle's parts catalog, and check the fitment information. If you are unsure, contact us with your VIN before ordering.

Euromotiv is an independent retailer of OEM, Genuine, and aftermarket automotive parts. We are not affiliated with, endorsed by, or authorized by Audi AG, Volkswagen AG, BMW AG, Mercedes-Benz Group AG, Dr. Ing. h.c. F. Porsche AG, MINI, or any other vehicle manufacturer. All trademarks, logos, and brand names are the property of their respective owners and are used solely for identification and compatibility purposes.