K&N 81-0805 Air-Oil Separator for 2014-18 Chevy/GMC 5.3L/6.2L 1500/Tahoe/Yukon

Vehicle Fitment

• 2014-2018 Chevrolet Silverado 1500 (5.3L/6.2L, 2WD/4WD)
• 2014-2018 GMC Sierra 1500 (5.3L/6.2L, 2WD/4WD)
• 2015-2020 Chevrolet Tahoe (5.3L/6.2L, 2WD/4WD)
• 2015-2020 Chevrolet Suburban (5.3L/6.2L, 2WD/4WD)
• 2015-2020 GMC Yukon / Yukon XL (5.3L/6.2L, 2WD/4WD)
• 2015-2019 Cadillac Escalade / Escalade ESV (6.2L, 2WD/4WD)

Features

• High-capacity reservoir to separate oil vapours/blow-by from the crankcase
• Direct-fit OEM-style hoses and factory-style quick-disconnect fittings
• Large 6 oz (approx) collection canister - no tools required to check/empty
• Vehicle-specific mounting bracket for a clean engine bay install
• Installation time ~30 minutes with basic hand tools
• Helps prevent intake-valve/port oil buildup and associated power loss/detonation risk
• Backed by the K&N Lifetime Limited Warranty
• Lightweight (~2 lb / 0.9 kg) design with anodised finish for durability

Specifications

• Reservoir Size: ~6 oz capacity
• Material: Anodised aluminium canister with hoses & fittings
• Hose I.D.: 3/8" (0.375") internal diameter factory-style hose included
• Application engines: 5.3L V8 & 6.2L V8 (gasoline, full-size trucks/SUVs)
• Fitment note: For 6.2L models, hose routing differs (see instructions) :contentReference[oaicite:1]{index=1}
• Weight: ~2 lb (0.9 kg) :contentReference[oaicite:2]{index=2}
• California sales note: Not legal for sale or use in California on any pollution-controlled motor vehicle. :contentReference[oaicite:3]{index=3}

Included Components

• 1x Air-Oil Separator Canister (K&N 85-6860 internal item) :contentReference[oaicite:4]{index=4}
• 1x Mounting Bracket (010226) :contentReference[oaicite:5]{index=5}
• 2x Hoses (3/8" ID x ~16" long) :contentReference[oaicite:6]{index=6}
• 2x Quick-Release Fittings (3/8" NPT) :contentReference[oaicite:7]{index=7}
• 2x M6 hex serrated nuts, 2x M6-1x20 bolts with lock washers & hardware :contentReference[oaicite:8]{index=8}

Product Description

The K&N 81-0805 Air-Oil Separator (catch can) is purpose-engineered for select full-size GM gasoline trucks and SUVs equipped with the 5.3L or 6.2L V8 engine. By intercepting crankcase blow-by vapours that would otherwise recycle into the intake tract, this unit helps protect against oil contamination of intake valves, ports, and the manifold. That in turn helps maintain power, reduce knock potential and extend engine life under both street and towing/off-road load conditions.

Installation is straightforward and designed for the enthusiast or DIYer - you'll use factory-style hose fittings, a dedicated mounting bracket and the full kit can be completed in about 30 minutes using standard tools. The unit includes a sizeable reservoir that simplifies maintenance: no tools required to check and empty. While the fitment coverage includes 2014-2020 model years, note that 2025 coverage is unconfirmed at time of listing.

This product is ideal for owners of the above-listed trucks and SUVs who want to mitigate oil/coke build-up in their intake systems and keep their naturally aspirated V8s running clean. If you're towing, hauling or operating the vehicle under heavy loads, the added protection from blow-by and oil vapour is beneficial. Please verify fitment for your exact trim and drivetrain (2WD/4WD) and note that this part is **not CARB-legal** for sale or use in California on pollution-controlled vehicles.