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 Hose

PCV Valve Hose

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8 PCV Hoses found

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Lexus RX330 Hose, Vacuum
Part Number: 90999-92002
$6.10 MSRP: $7.87
You Save: $1.77 (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; 2GRFE, 3MZFE; GSU30L-AWAGKA, GSU35L-AWAGKA, MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
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Lexus RX330 Hose, Ventilation
Part Number: 12261-20011
$14.04 MSRP: $18.10
You Save: $4.06 (23%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: 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; 3MZFE; MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
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Lexus RX330 Hose, Ventilation
Part Number: 12261-20091
$15.58 MSRP: $20.50
You Save: $4.92 (24%)
Ships in 1-2 Business Days
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Product Specifications
- 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; 3MZFE; MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
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Lexus RX330 Hose, Ventilation
Part Number: 12261-0A050
$22.73 MSRP: $29.31
You Save: $6.58 (23%)
Ships in 1-3 Business Days
ADD TO CART
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; 3MZFE; MCU33L-AWAGKA, 3MZFE; MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
View related parts
Lexus RX330 Hose, Ventilation
Part Number: 12261-20090
$15.58 MSRP: $20.50
You Save: $4.92 (24%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- 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; 3MZFE; MCU33L-AWAGKA, MCU33L-CWAGKA, MCU38L-AWAGKA, MCU38L-CWAGKA
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Lexus RX330 Hose, Ventilation
Part Number: 12261-31050
$27.98 MSRP: $35.79
You Save: $7.81 (22%)
Ships in 1-3 Business Days
ADD TO CART
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; 2GRFE; GSU30L-AWAGKA, GSU30L-CWAGKA, GSU35L-AWAGKA, GSU35L-CWAGKA
View related parts
Lexus RX330 Hose, Ventilation
Part Number: 12261-20040
$22.91 MSRP: $29.31
You Save: $6.40 (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; 3MZFE; MCU33L-AWAGKA, MCU38L-AWAGKA
View related parts
Lexus RX330 Hose, Ventilation, NO.2
Part Number: 12262-31080
$53.99 MSRP: $69.08
You Save: $15.09 (22%)
Ships in 1-3 Business Days
ADD TO CART
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; 2GRFE; GSU30L-AWAGKA, GSU30L-CWAGKA, GSU35L-AWAGKA, GSU35L-CWAGKA

Lexus RX330 PCV Hose

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

Hose, Ventilation
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?
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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