AJulyBee 300ml Oil Catch Can Kit with 31.5in Hose — Aluminum, Vented or Sealed Install

The AJulyBee 300ml Oil Catch Can Kit is a compact crankcase vapor separator that collects oil and contaminants before they reach intake components, helping reduce deposit buildup and preserve engine performance.

This complete kit includes a 300ml aluminum catch can, attached dipstick, and a 31.5-inch (0.8m) fuel-line-style hose (3/8" ID, 2/3" OD), plus fittings to suit common gasoline engines. It’s engineered for easy installation either as a vented breather using the supplied filter or as a sealed in-line canister between PCV and intake lines. The can’s size and service-friendly design make routine draining and inspection straightforward, while the dual installation options give installers flexibility for different engine layouts.

How does the AJulyBee catch can reduce oil and carbon deposits?

The catch can intercepts oily vapors from the crankcase before they enter the intake tract, letting heavier oil droplets condense and separate inside the can. This lowers the volume of oil and contaminants that can coat throttle bodies, intake valves, and sensors, which helps maintain more consistent airflow and sensor readings over time.

• 300ml internal volume collects condensed oil and moisture.
• Baffled interior promotes condensation and separation of droplets.
• Removable dipstick and drain access for easy monitoring and emptying.
• Can be used vented with a breather or sealed inline to suit your engine.

What are the physical specs and installation considerations?

The kit ships with a 31.5-inch (0.8m) hose sized 3/8" ID (2/3" OD) and hardware appropriate for most gasoline-powered vehicles. Before buying, verify there’s adequate space in your engine bay for a 300ml can and routing the hose safely away from heat sources and moving parts.

• Can capacity: 300ml, with dipstick for visual checks.
• Hose: 31.5 in / 0.8 m, 3/8" inner diameter, 2/3" outer diameter.
• Mounting: bracket-ready for under-hood attachment; confirm clearance prior to install.
• Dual configuration: vented with filter or sealed inline between hoses.

How do I service and care for the catch can?

Routine maintenance is simple: drain or wipe the collected oil from the can and inspect the hose and fittings for wear. In cold climates check the unit more frequently because moisture can accumulate; weekly checks in freezing conditions help prevent iced components and maintain proper operation.

• Use the dipstick to monitor fill level; empty when near capacity.
• Clean the can interior and fittings during each service interval.
• Inspect and replace the hose if cracked, swollen, or brittle.
• In freezing weather, increase inspection frequency to avoid moisture-related issues.

Who is this for? The AJulyBee 300ml Oil Catch Can Kit is aimed at DIY installers, tuners, and everyday drivers who want a compact, serviceable solution to reduce oil vapor and contaminant flow into their engine intake. It suits most gasoline cars, trucks, and SUVs with available under-hood mounting space and a 3/8" hose routing path. If you need a small, flexible catch can that can be set up as a vented breather or a sealed inline unit, this kit offers a practical balance of capacity, accessibility, and compatibility without complex plumbing or specialty tools.