What is the function of the Positive Crankcase Ventilation (PCV) system and when should you consider checking and replacing PCV Hose and PCV Valve?

The Positive Crankcase Ventilation (PCV) system reduces hydrocarbon emissions by directing blow-by gases and crankcase vapors into the intake manifold. Fresh air from the air filter housing mixes with these gases in the crankcase before exiting through the PCV valve. During idle and part-throttle conditions, blow-by gases flow through the PCV valve into the intake manifold, while fresh air is drawn into the crankcase. Over time, sludge buildup may reduce the system's efficiency and cause leaks. Regular checks and possible replacements of the PCV valve and hoses during routine maintenance are recommended.

Genuine Lexus RX330 PCV Valve

Position Crank Ventilation Valve

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

3 PCV Valves found

View related parts
Lexus RX330 Valve Sub-Assy, Ventilation
Part Number: 12204-31040
$6.46 MSRP: $8.33
You Save: $1.87 (23%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: PCV Valve
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2006 Lexus RX330 | STD | 6 Cyl 3.5L | 2GRFE; 2GRFE; GSU30L-AWAGKA, GSU30L-CWAGKA, GSU35L-AWAGKA, GSU35L-CWAGKA
View related parts
Lexus RX330 Valve Sub-Assy, Ventilation
Part Number: 12204-20040
$8.10 MSRP: $10.44
You Save: $2.34 (23%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: PCV Valve
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2004-2006 Lexus RX330 | STD | 6 Cyl 3.3L | 3MZFE; 3MZFE; MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
View related parts
Lexus RX330 Valve Sub-Assy, Ventilation
Part Number: 12204-20060
$10.13 MSRP: $13.05
You Save: $2.92 (23%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: PCV Valve
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2004-2005 Lexus RX330 | STD | 6 Cyl 3.3L | 3MZFE; 3MZFE; MCU33L-CWAGKA, MCU38L-CWAGKA

Lexus RX330 PCV Valve

The PCV Valve in Lexus RX330 automobile is one of the vital parts that aids in emissions and optimum performance of the engine. Thus, the PCV Valve channels the crankcase combustion byproduct gases back into the engine's combustion chambers eradicating environmental pollution as well as the formation of detrimental engine ruining oil sludge. Located depending on the intake manifold vacuum conditions, the PCV Valve only allows gas flow restriction at idle to avoid excessive lean running of the engine while at the same time it allows HP increase with increased blow-by gases at higher RPMs or at times when the engine is loaded up. Also, the PCV Valve plays the role of a flame arrester and helps boost the power of an engine by helping the crankcase and piston rings to improve on the compression. Another common vehicle component that should be checked more often is the PCV Valve, and proper maintenance guarantees a vehicle's good condition without expensive repairs.

Should you need to purchase new auto parts for your vehicle, we strongly suggest you consider the genuine Lexus RX330 PCV Valve available on LexusPartsNow.com. Our OEM Lexus RX330 PCV Valve come with the reassurance of the manufacturer's warranty, a hassle-free return policy, and speedy delivery service, all at affordable prices online. Feel free to shop with confidence!

Lexus RX330 PCV Valve Parts Questions & Experts Answers

Valve Sub-Assy, Ventilation
12204-20040
Q: What is the function of the Positive Crankcase Ventilation (PCV) system and when should you consider checking and replacing PCV Hose and PCV Valve?
A: The Positive Crankcase Ventilation (PCV) system reduces hydrocarbon emissions by directing blow-by gases and crankcase vapors into the intake manifold. Fresh air from the air filter housing mixes with these gases in the crankcase before exiting through the PCV valve. During idle and part-throttle conditions, blow-by gases flow through the PCV valve into the intake manifold, while fresh air is drawn into the crankcase. Over time, sludge buildup may reduce the system's efficiency and cause leaks. Regular checks and possible replacements of the PCV valve and hoses during routine maintenance are recommended.