URO 946-107-229-77 Crankcase Vent Valve - Right Side Passenger

The URO 946-107-229-77 is a replacement right-side (passenger side) crankcase vent valve designed to restore proper crankcase ventilation on Porsche engines. URO Parts delivers cost-effective aftermarket alternatives to OEM components without compromising fit, function, or durability.

The crankcase ventilation system (also known as a PCV system) routes blow-by gases from the crankcase back into the intake to be burned, rather than venting them to atmosphere. Over time, vent valves can become clogged, stuck, or cracked — leading to oil leaks, rough idle, increased oil consumption, and a lit check engine light. Replacing a failed valve restores proper crankcase pressure regulation and engine performance.

Key Features:

• Direct-fit replacement for the right/passenger-side crankcase vent valve
• Restores proper crankcase ventilation and engine efficiency
• Manufactured to OEM specifications for accurate fit and reliable operation
• Cost-effective alternative to OEM Porsche pricing
• Sold individually

Installation Note: When replacing this valve, it is recommended to also replace the associated o-rings: qty. 1 of Porsche o-ring 999-707-677-40 and qty. 1 of Porsche o-ring 999-707-677-41.

OEM / Cross-Reference Part Numbers: 946-107-229-77, 946.107.229.77, 94610722977, 946 107 229 77