What is the function of the Positive Crankcase Ventilation (PCV) system and when should you consider checking and replacing PCV Hose and PCV Valve on Lexus RX330?

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 Hose

PCV Valve Hose

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8 PCV Hoses found

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Lexus RX330 Hose, Vacuum
Part Number: 90999-92002
$6.44 MSRP: $8.30
You Save: $1.86 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose Sub-Assy, Vacuum; Vacuum Hose
- Manufacturer Note: NO.2
- Replaces: 90099-92002, 95411-19908, 95411-10130
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2004-2006 Lexus RX330 | STD | 6 Cyl 3.3L, 6 Cyl 3.5L | 2GRFE, 3MZFE; GSU30L-AWAGKA, GSU35L-AWAGKA, MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
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Lexus RX330 Ventilation Hose
Part Number: 12261-20011
$14.56 MSRP: $18.78
You Save: $4.22 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose, Ventilation; PCV Hose
- Manufacturer Note: TYPE A:REFER ILLUST.
- Replaces: 12261-20010
- 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; MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
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Lexus RX330 Ventilation Hose
Part Number: 12261-0A050
$23.59 MSRP: $30.43
You Save: $6.84 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Hose, Ventilation, NO.2; Vent Hose
- Replaces: 12261-20040
- 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; MCU33L-AWAGKA, 3MZFE; MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
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Lexus RX330 Ventilation Hose
Part Number: 12261-20091
$16.63 MSRP: $21.28
You Save: $4.65 (22%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Hose, Ventilation
- Manufacturer Note: TYPE C:REFER ILLUST.
- Replaces: 12261-20090
- 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; MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
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Lexus RX330 Ventilation Hose
Part Number: 12261-20090
$16.63 MSRP: $21.28
You Save: $4.65 (22%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Ventilation
- Manufacturer Note: TYPE B:REFER ILLUST.
- Replaced by: 12261-20091
- 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; MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
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Lexus RX330 Ventilation Hose
Part Number: 12261-31050
$30.93 MSRP: $39.58
You Save: $8.65 (22%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Ventilation
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2006 Lexus RX330 | STD | 6 Cyl 3.5L | 2GRFE; GSU30L-AWAGKA, GSU30L-CWAGKA, GSU35L-AWAGKA, GSU35L-CWAGKA
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Lexus RX330 Hose, Ventilation, NO.2
Part Number: 12262-31080
$59.66 MSRP: $76.34
You Save: $16.68 (22%)
Ships in 1-3 Business Days
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Product Specifications
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2006 Lexus RX330 | STD | 6 Cyl 3.5L | 2GRFE; GSU30L-AWAGKA, GSU30L-CWAGKA, GSU35L-AWAGKA, GSU35L-CWAGKA
View related parts
Lexus RX330 Ventilation Hose
Part Number: 12261-20040
$23.78 MSRP: $30.43
You Save: $6.65 (22%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Hose, Ventilation, NO.2
- Replaced by: 12261-0A050
- 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; MCU33L-AWAGKA, MCU38L-AWAGKA

Lexus RX330 PCV Hose

The Lexus RX330 PCV Hose directs crankcase vapors back into the intake where they will burn rather than pollute. Sitting between the crankcase nipple and the spring-loaded PCV valve is the PCV Hose that guides the flow of the valve which meters the air-fuel ratio with its sliding pintle. Every Lexus RX330 uses engine vacuum to draw the gases through the sealed line and allows the mixture to escape the tailpipe cleaner to improve fuel economy. Across the RX330 years, buyers will find two routing variations, a driver-side PCV Hose and a passenger-side PCV Hose, which are identical in function but shaped differently to suit the Lexus engine bay layout. A cracked or loose PCV Hose increases pressure, throws off idle, and spikes emissions, so it is a wise and inexpensive option to select a direct fit replacement. Regular checks and quick changes help keep the RX330 breathing easy, ensure the Lexus is operating efficiently, and prolong valve life. A new PCV Hose will last for years.

Should you need to purchase new auto parts for your vehicle, we strongly suggest you consider the genuine Lexus RX330 PCV Hose available on LexusPartsNow.com. Our OEM Lexus RX330 PCV Hose 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 Hose Parts Questions & Experts Answers

Ventilation Hose
12261-20040
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 on Lexus RX330?
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.

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