K&N Engineering 81-0804 Air Oil Separator for 2019-2022 Chevrolet Silverado 1500 and GMC Sierra 1500

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. 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.

• No-Hassle Lifetime Limited Warranty

The K&N Engineering 81-0804 Air Oil Separator helps protect your engine and intake tract by capturing oil and other contaminants from crankcase blowby before they can recirculate through the intake system. By reducing oil accumulation, this vehicle-specific separator may help support consistent engine performance and reduce the risk of power loss or blowby-related engine damage. It is designed for select 2019-2022 Chevrolet Silverado 1500 and GMC Sierra 1500 applications equipped with 5.3L or 6.2L engines.

Installation is designed to take approximately 30 minutes using basic hand tools. Factory-style hose connections allow the separator to snap into place while replacing the original crankcase line, and the unit can be mounted in a convenient location within the engine bay. The high-capacity reservoir can be checked and emptied without tools, simplifying routine maintenance. Each K&N Engineering air oil separator is engineered specifically for its intended vehicle application and is backed by a No-Hassle Lifetime Limited Warranty.

Key Product Specifications and Technical Data

• Brand: K&N Engineering
• Part Number: 81-0804
• Product Type: Air oil separator
• Application: Automotive engine crankcase ventilation system
• Engine Coverage: 5.3L and 6.2L engines
• Installation Method: Vehicle-specific replacement of the factory crankcase line
• Hose Connection Type: Factory-style snap-on connections
• Warranty: No-Hassle Lifetime Limited Warranty

What's Included

• K&N Engineering 81-0804 air oil separator assembly
• Application-specific installation components

Fitment

Fits select 2019-2022 Chevrolet Silverado 1500 and GMC Sierra 1500 models with 5.3L or 6.2L engines. Verify the vehicle application, engine configuration, and installation requirements before ordering. This product is not CARB approved and may not be legal for use on vehicles operated in California or other locations with emissions regulations requiring CARB certification.

Features:

• Blowby Protection: Captures oil and contaminants from crankcase blowby to help protect the engine and intake tract.
• High-Capacity Reservoir: Collects separated oil and can be checked or emptied without tools.
• Vehicle-Specific Design: Engineered for select 2019-2022 Chevrolet Silverado 1500 and GMC Sierra 1500 models with 5.3L or 6.2L engines.
• Easy Installation: Replaces the factory crankcase line and uses factory-style hose connections for a quick installation with basic tools.

Fitments:
2019 Chevrolet Silverado 1500 Custom
2019 Chevrolet Silverado 1500 Custom Trail Boss
2019 Chevrolet Silverado 1500 High Country
2019 Chevrolet Silverado 1500 LT
2019 Chevrolet Silverado 1500 LT Trail Boss
2019 Chevrolet Silverado 1500 LTZ
2019 Chevrolet Silverado 1500 RST
2019 Chevrolet Silverado 1500 SSV
2019 Chevrolet Silverado 1500 WT
2019 Chevrolet Silverado 1500 LD Custom
2019 Chevrolet Silverado 1500 LD LT
2019 Chevrolet Silverado 1500 LD WT
2019 GMC Sierra 1500 AT4
2019 GMC Sierra 1500 Base
2019 GMC Sierra 1500 Denali
2019 GMC Sierra 1500 Elevation
2019 GMC Sierra 1500 SLE
2019 GMC Sierra 1500 SLT
2019 GMC Sierra 1500 Limited Base
2019 GMC Sierra 1500 Limited SLE
2020 Cadillac Escalade Base
2020 Cadillac Escalade Luxury
2020 Cadillac Escalade Platinum
2020 Cadillac Escalade Premium Luxury
2020 Cadillac Escalade ESV Base
2020 Cadillac Escalade ESV Luxury
2020 Cadillac Escalade ESV Platinum
2020 Cadillac Escalade ESV Premium Luxury
2020 Chevrolet Silverado 1500 Custom
2020 Chevrolet Silverado 1500 Custom Trail Boss
2020 Chevrolet Silverado 1500 High Country
2020 Chevrolet Silverado 1500 LT
2020 Chevrolet Silverado 1500 LT Trail Boss
2020 Chevrolet Silverado 1500 LTZ
2020 Chevrolet Silverado 1500 RST
2020 Chevrolet Silverado 1500 SSV
2020 Chevrolet Silverado 1500 WT
2020 GMC Sierra 1500 AT4
2020 GMC Sierra 1500 Base
2020 GMC Sierra 1500 Denali
2020 GMC Sierra 1500 Elevation
2020 GMC Sierra 1500 SLE
2020 GMC Sierra 1500 SLT
2021 Cadillac Escalade Luxury
2021 Cadillac Escalade Premium Luxury
2021 Cadillac Escalade Premium Luxury Platinum
2021 Cadillac Escalade Sport
2021 Cadillac Escalade Sport Platinum
2021 Cadillac Escalade ESV Luxury
2021 Cadillac Escalade ESV Premium Luxury
2021 Cadillac Escalade ESV Premium Luxury Platinum
2021 Cadillac Escalade ESV Sport
2021 Cadillac Escalade ESV Sport Platinum
2021 Chevrolet Silverado 1500 Custom
2021 Chevrolet Silverado 1500 Custom Trail Boss
2021 Chevrolet Silverado 1500 High Country
2021 Chevrolet Silverado 1500 LT
2021 Chevrolet Silverado 1500 LT Trail Boss
2021 Chevrolet Silverado 1500 LTZ
2021 Chevrolet Silverado 1500 RST
2021 Chevrolet Silverado 1500 SSV
2021 Chevrolet Silverado 1500 WT
2021 Chevrolet Suburban Commercial
2021 Chevrolet Suburban High Country
2021 Chevrolet Suburban LS
2021 Chevrolet Suburban LT
2021 Chevrolet Suburban Premier
2021 Chevrolet Suburban RST
2021 Chevrolet Suburban Z71
2021 Chevrolet Tahoe High Country
2021 Chevrolet Tahoe LS
2021 Chevrolet Tahoe LT
2021 Chevrolet Tahoe PPV
2021 Chevrolet Tahoe Premier
2021 Chevrolet Tahoe RST
2021 Chevrolet Tahoe SSV
2021 Chevrolet Tahoe Z71
2021 GMC Sierra 1500 AT4
2021 GMC Sierra 1500 Base
2021 GMC Sierra 1500 Denali
2021 GMC Sierra 1500 Elevation
2021 GMC Sierra 1500 SLE
2021 GMC Sierra 1500 SLT
2021 GMC Yukon AT4
2021 GMC Yukon Denali
2021 GMC Yukon SLE
2021 GMC Yukon SLT
2021 GMC Yukon XL AT4
2021 GMC Yukon XL Denali
2021 GMC Yukon XL SLE
2021 GMC Yukon XL SLT
2022 Cadillac Escalade Luxury
2022 Cadillac Escalade Premium Luxury
2022 Cadillac Escalade Premium Luxury Platinum
2022 Cadillac Escalade Sport
2022 Cadillac Escalade Sport Platinum
2022 Cadillac Escalade ESV Luxury
2022 Cadillac Escalade ESV Premium Luxury
2022 Cadillac Escalade ESV Premium Luxury Platinum
2022 Cadillac Escalade ESV Sport
2022 Cadillac Escalade ESV Sport Platinum
2022 Chevrolet Silverado 1500 Custom Trail Boss
2022 Chevrolet Silverado 1500 High Country
2022 Chevrolet Silverado 1500 LT
2022 Chevrolet Silverado 1500 LT Trail Boss
2022 Chevrolet Silverado 1500 LTZ
2022 Chevrolet Silverado 1500 RST
2022 Chevrolet Silverado 1500 WT
2022 Chevrolet Silverado 1500 ZR2
2022 Chevrolet Silverado 1500 LTD Custom Trail Boss
2022 Chevrolet Silverado 1500 LTD High Country
2022 Chevrolet Silverado 1500 LTD LT
2022 Chevrolet Silverado 1500 LTD LT Trail Boss
2022 Chevrolet Silverado 1500 LTD LTZ
2022 Chevrolet Silverado 1500 LTD RST
2022 Chevrolet Silverado 1500 LTD SSV
2022 Chevrolet Silverado 1500 LTD WT
2022 Chevrolet Suburban Commercial
2022 Chevrolet Suburban High Country
2022 Chevrolet Suburban LS
2022 Chevrolet Suburban LT
2022 Chevrolet Suburban Premier
2022 Chevrolet Suburban RST
2022 Chevrolet Suburban Z71
2022 Chevrolet Tahoe Commercial
2022 Chevrolet Tahoe High Country
2022 Chevrolet Tahoe LS
2022 Chevrolet Tahoe LT
2022 Chevrolet Tahoe PPV
2022 Chevrolet Tahoe Premier
2022 Chevrolet Tahoe RST
2022 Chevrolet Tahoe SSV
2022 Chevrolet Tahoe Z71
2022 GMC Sierra 1500 AT4
2022 GMC Sierra 1500 AT4X
2022 GMC Sierra 1500 Denali
2022 GMC Sierra 1500 Denali Ultimate
2022 GMC Sierra 1500 Elevation
2022 GMC Sierra 1500 Pro
2022 GMC Sierra 1500 SLE
2022 GMC Sierra 1500 SLT
2022 GMC Sierra 1500 Limited AT4
2022 GMC Sierra 1500 Limited Denali
2022 GMC Sierra 1500 Limited Elevation
2022 GMC Sierra 1500 Limited Pro
2022 GMC Sierra 1500 Limited SLE
2022 GMC Sierra 1500 Limited SLT
2022 GMC Yukon AT4
2022 GMC Yukon Denali
2022 GMC Yukon SLE
2022 GMC Yukon SLT
2022 GMC Yukon XL AT4
2022 GMC Yukon XL Denali
2022 GMC Yukon XL SLE
2022 GMC Yukon XL SLT
2023 Cadillac Escalade Luxury
2023 Cadillac Escalade Premium Luxury
2023 Cadillac Escalade Premium Luxury Platinum
2023 Cadillac Escalade Sport
2023 Cadillac Escalade Sport Platinum
2023 Cadillac Escalade V
2023 Cadillac Escalade ESV Luxury
2023 Cadillac Escalade ESV Premium Luxury
2023 Cadillac Escalade ESV Premium Luxury Platinum
2023 Cadillac Escalade ESV Sport
2023 Cadillac Escalade ESV Sport Platinum
2023 Cadillac Escalade ESV V
2023 Chevrolet Silverado 1500 Custom Trail Boss
2023 Chevrolet Silverado 1500 High Country
2023 Chevrolet Silverado 1500 LT
2023 Chevrolet Silverado 1500 LT Trail Boss
2023 Chevrolet Silverado 1500 LTZ
2023 Chevrolet Silverado 1500 PPV
2023 Chevrolet Silverado 1500 RST
2023 Chevrolet Silverado 1500 WT
2023 Chevrolet Silverado 1500 ZR2
2023 Chevrolet Suburban Commercial
2023 Chevrolet Suburban High Country
2023 Chevrolet Suburban LS
2023 Chevrolet Suburban LT
2023 Chevrolet Suburban Premier
2023 Chevrolet Suburban RST
2023 Chevrolet Suburban Z71
2023 Chevrolet Tahoe Commercial
2023 Chevrolet Tahoe High Country
2023 Chevrolet Tahoe LS
2023 Chevrolet Tahoe LT
2023 Chevrolet Tahoe PPV
2023 Chevrolet Tahoe Premier
2023 Chevrolet Tahoe RST
2023 Chevrolet Tahoe SSV
2023 Chevrolet Tahoe Z71
2023 GMC Sierra 1500 AT4
2023 GMC Sierra 1500 AT4X
2023 GMC Sierra 1500 Denali
2023 GMC Sierra 1500 Denali Ultimate
2023 GMC Sierra 1500 Elevation
2023 GMC Sierra 1500 Pro
2023 GMC Sierra 1500 SLE
2023 GMC Sierra 1500 SLT
2023 GMC Yukon AT4
2023 GMC Yukon Denali
2023 GMC Yukon Denali Ultimate
2023 GMC Yukon SLE
2023 GMC Yukon SLT
2023 GMC Yukon XL AT4
2023 GMC Yukon XL Denali
2023 GMC Yukon XL Denali Ultimate
2023 GMC Yukon XL SLE
2023 GMC Yukon XL SLT
2024 Chevrolet Silverado 1500 Custom Trail Boss
2024 Chevrolet Silverado 1500 High Country
2024 Chevrolet Silverado 1500 LT
2024 Chevrolet Silverado 1500 LT Trail Boss
2024 Chevrolet Silverado 1500 LTZ
2024 Chevrolet Silverado 1500 PPV
2024 Chevrolet Silverado 1500 RST
2024 Chevrolet Silverado 1500 WT
2024 Chevrolet Silverado 1500 ZR2
2024 Chevrolet Suburban Commercial
2024 Chevrolet Suburban High Country
2024 Chevrolet Suburban LS
2024 Chevrolet Suburban LT
2024 Chevrolet Suburban Premier
2024 Chevrolet Suburban RST
2024 Chevrolet Suburban Z71
2024 Chevrolet Tahoe Commercial
2024 Chevrolet Tahoe High Country
2024 Chevrolet Tahoe LS
2024 Chevrolet Tahoe LT
2024 Chevrolet Tahoe PPV
2024 Chevrolet Tahoe Premier
2024 Chevrolet Tahoe RST
2024 Chevrolet Tahoe SSV
2024 Chevrolet Tahoe Z71
2024 GMC Sierra 1500 Denali
2024 GMC Sierra 1500 Elevation
2024 GMC Sierra 1500 Pro
2024 GMC Sierra 1500 SLE
2024 GMC Sierra 1500 SLT
2024 GMC Yukon AT4
2024 GMC Yukon SLE
2024 GMC Yukon SLT
2024 GMC Yukon XL AT4
2024 GMC Yukon XL SLE
2024 GMC Yukon XL SLT
2025 Chevrolet Silverado 1500 Custom Trail Boss
2025 Chevrolet Silverado 1500 High Country
2025 Chevrolet Silverado 1500 LT
2025 Chevrolet Silverado 1500 LT Trail Boss
2025 Chevrolet Silverado 1500 LTZ
2025 Chevrolet Silverado 1500 PPV
2025 Chevrolet Silverado 1500 RST
2025 Chevrolet Silverado 1500 WT
2025 Chevrolet Silverado 1500 ZR2
2025 Chevrolet Suburban High Country
2025 Chevrolet Suburban LS
2025 Chevrolet Suburban LT
2025 Chevrolet Suburban Premier
2025 Chevrolet Suburban RST
2025 Chevrolet Suburban Z71
2025 Chevrolet Tahoe Commercial
2025 Chevrolet Tahoe High Country
2025 Chevrolet Tahoe LS
2025 Chevrolet Tahoe LT
2025 Chevrolet Tahoe PPV
2025 Chevrolet Tahoe Premier
2025 Chevrolet Tahoe RST
2025 Chevrolet Tahoe SSV
2025 Chevrolet Tahoe Z71
2025 GMC Sierra 1500 Denali
2025 GMC Sierra 1500 Elevation
2025 GMC Sierra 1500 Pro
2025 GMC Sierra 1500 SLE
2025 GMC Sierra 1500 SLT
2025 GMC Yukon AT4
2025 GMC Yukon Elevation
2025 GMC Yukon XL AT4
2025 GMC Yukon XL Elevation

Air Freight Prohibited: false
Not Carb Approved: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1