Toyota Valve Sub-Assy Vent 12204-50030 OEM Crankcase Vent Hose — Direct-Fit, Ready-to-Install

TOYOTA Genuine Valve Sub-Assy, Vent (12204-50030) is an OEM ventilation hose assembly engineered to replace the crankcase/vent valve quickly and restore proper crankcase venting without modifications.

This genuine Toyota valve sub-assembly is a direct-fit ventilation hose supplied ready to install. Designed and manufactured to Toyota’s original equipment specifications, it matches the form, fit, and function of the factory part so you can swap it into compatible Toyota engines with minimal time and no additional adapters. The unit ships as a single piece in compact packaging and is intended for maintenance or repair where the vent hose or valve needs replacement.

How does this valve sub-assy fit my Toyota and what vehicles use part 12204-50030?

This part is an OEM replacement engineered for Toyota engines that specify part number 12204-50030. It installs in the factory routing and connects to existing fittings without custom work.

• Exact Toyota part number 12204-50030 for correct identification.
• Direct-fit connector dimensions matching original equipment.
• Intended for models and engine assemblies that list 12204-50030 in their parts catalog.

What are the physical specs and packaging details I should expect?

The valve sub-assy ships as a single, ready-to-install item in a compact package. Dimensions and weight are small enough for easy handling and storage while keeping the part protected for delivery.

• Package dimensions approximately 5.10 x 5.10 x 1.80 inches.
• Shipped weight about 0.82 pounds for straightforward postal handling.
• Package includes one valve sub-assy — no extra components required.

Do I need tools or modifications to install this ventilation hose?

No modifications are required—this Genuine Toyota valve sub-assy is supplied to match factory installation points. Basic hand tools are typically sufficient for removal of the old unit and installation of the new vent hose.

• Ready-to-install out of the box with factory mating surfaces.
• No cutting, trimming, or special adapters needed.
• Installation normally requires common hand tools and basic mechanical experience.

What performance role does the vent valve serve in the engine system?

The valve sub-assy helps route crankcase ventilation gases along the factory path to the intake or vapor management system. While not a performance upgrade, replacing a worn or leaking vent hose helps maintain engine ventilation balance and reduces the risk of oil leaks or pressure-related issues.

• Manages crankcase ventilation routing as designed by Toyota.
• Supports correct sealing and hose attachment to prevent leaks.
• Maintains factory-engineered flow paths for emissions and engine health.

Who is this for: This Toyota Genuine Valve Sub-Assy, Vent (12204-50030) is for vehicle owners, technicians, and fleet managers who need an exact OEM replacement for a worn or damaged ventilation hose. Choose this part if you want genuine Toyota fitment, a plug-and-play installation, and a part that adheres to the original equipment specifications rather than a universal aftermarket substitute. Ideal for routine maintenance, repair shops, and DIY mechanics familiar with Toyota engine layouts.