K&N Air Oil Separator Catch Can for 2014-2020 GM Trucks - Engine

In this review the K&N Air Oil Separator is examined for owners of compatible 2014-2018 Silverado and Sierra 1500 models and 2015-2020 Tahoe, Suburban and Yukon models who want to reduce oil contamination and preserve engine performance. The bottom line: this catch can is a focused, vehicle-specific solution that captures blowby oil in a high capacity reservoir, protecting the intake tract and helping avoid power loss or detonation. Installation is straightforward and the unit uses factory-style hose connections that make it practical for routine maintenance.

Key Features

• High capacity reservoir: Captures and holds blowby oil so less contaminant reaches the intake manifold and throttle body, reducing deposits over time.
• Vehicle-specific engineering: Each unit is made to fit the listed Silverado, Sierra, Tahoe, Suburban and Yukon applications for a cleaner, OEM-like installation.
• Factory-style hose connections: Uses OEM-style connectors and hoses that snap on and off for simple removal and service without special adapters.
• Quick 30-minute installation: Installs with basic tools in about 30 minutes, so owners can fit it themselves without major garage time.
• No-tool reservoir check: The oil collector reservoir can be checked and emptied without tools, making routine maintenance easier.
• Durable components: Built with premium hardware and robust hoses to withstand under-hood conditions and provide long service life.

Who It's For

This catch can is best for owners of the specified 2014-2018 Silverado 1500 and 2014-2018 GMC Sierra 1500, plus 2015-2020 Tahoe and Suburban and 2015-2019 Yukon who want to proactively reduce oil in the intake system and preserve engine performance. It suits daily drivers and light towing owners who notice oil fumes, reduced throttle response, or want preventative maintenance.

It is less appropriate for someone who needs a universal or multi-vehicle kit - this is an application-specific unit - or for drivers in jurisdictions where the unit is not legal for use on pollution-controlled vehicles, as noted in the product description.

Pros & Cons

Pros

• Easy to install with factory-style connectors, making DIY fitting practical.
• Effective oil collection reported by users, with measurable catchability during use.
• Durable, OEM-style hoses and hardware included for a secure fit.
• No-hassle reservoir access lets owners check and empty without tools.

Cons

• Mounting may require opening or modifying mounting points on some vehicles during installation.
• Not legal for sale or use in California on pollution-controlled motor vehicles, limiting suitability there.

Specifications

Brand	K&N
Product type	Air Oil Separator / Catch Can
Applications	2014-2018 Silverado 1500; 2014-2018 GMC Sierra 1500; 2015-2020 Tahoe/Suburban; 2015-2019 Yukon (see description)
Installation time	About 30 minutes with basic tools
Connection style	Factory-style OEM connectors and hoses
Reservoir	High capacity, no tools required to check or empty
Warranty	No-Hassle Lifetime Limited Warranty

Our Verdict

The K&N Air Oil Separator is a practical, vehicle-specific catch can that offers tangible protection against blowby oil and intake contamination for compatible Silverado, Sierra, Tahoe, Suburban and Yukon owners. It delivers good value through easy installation, durable OEM-style components and a high capacity reservoir, though installers should plan for possible minor mounting adjustments and note regional legal restrictions.

Frequently Asked Questions

How long does installation take?
Typical installation takes about 30 minutes with basic hand tools and the included hardware.

Will it fit my 2016 Tahoe?
This model is designed to be compatible with 2015-2020 Tahoe and Suburban applications; confirm fitment in the product description for your specific variant.

Do I need tools to empty the reservoir?
No tools are required to check and empty the oil collector reservoir, making routine maintenance quick.