How to remove and install the power steering pump on Lexus RX350?

The first step to work while handling the power steering pump is to unhook the cable of the negative terminal of the battery. Turn the steering wheel back and forth in its fullest extent several times to evacuate maximum fluid that can be siphoned from the power steering fluid reservoir with the help of a large syringe or suction gun; prepare a drain pan for the fluid spill while disconnecting the fluid hoses. Turn the right front wheel lug nuts on the counterclockwise direction, lift the vehicle, and place it on jackstands, then remove the right front wheel. If needed remove the right front fender apron seal and the liner on the right front. Next, remove the drivebelt. Remove the fluid feed hose from the pump and unscrew the electrical connector of the power steering pressure switch. Loosen the pressure line to pump union bolt and dis-connect the pressure line from the pump with the help of two spanners and make sure that you change all the sealing washers if required. After that, the mounting bolts will have to be unscrewed for the removal of the pump, although the upper bolt is partially disguised but will let go when the pump is removed. In regard to installation, it is recommended to reverse the process of removal when tightening the union bolt of pressure line, and mounting bolts to the recommended torque and adjusting the tension of the drivebelt. Last, replenish the amount of the fluid in the reservoir to the required level, and evacuate the system.

Genuine Lexus RX350 Power Steering Pump

Power Steering Pump Unit

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Lexus RX350 Vane Pump Assembly
Part Number: 44320-48040
$326.51 MSRP: $452.58
You Save: $126.07 (28%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump Assy, Vane; Power Steering Pump
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2007 Lexus RX350 | STD | 6 Cyl 3.3L | 3MZFE; MCU33L-AWAGKA, MCU38L-AWAGKA
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Lexus RX350 Power Steering Pump
Part Number: 44310-48070
$505.43 MSRP: $689.11
You Save: $183.68 (27%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump Assy, Vane
- Replaced by: 44310-0E020
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2007-2009 Lexus RX350 | STD | 6 Cyl 3.5L | 2GRFE; GSU30L-AWAGKA, GSU35L-AWAGKA
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Lexus RX350 Vane Pump Assembly
Part Number: 44310-0E020
$497.15 MSRP: $689.11
You Save: $191.96 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Assy, Vane; Power Steering Pump
- Replaces: 44310-48070
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2007-2009 Lexus RX350 | STD | 6 Cyl 3.5L | 2GRFE; GSU30L-AWAGKA, 2GRFE; GSU30L-CWAGKA, GSU35L-AWAGKA, GSU35L-CWAGKA
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Lexus RX350 Vane Pump Assembly
Part Number: 44310-0E010
$468.47 MSRP: $649.36
You Save: $180.89 (28%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Assy, Vane; Power Steering Pump
- Warranty: This genuine part is guaranteed by Lexus's factory warranty.
Fits the following Vehicles:
- 2007 Lexus RX350 | STD | 6 Cyl 3.3L | 3MZFE; MCU33L-CWAGKA, MCU38L-CWAGKA

Lexus RX350 Power Steering Pump

The purpose of the Lexus RX350 Power Steering Pump is to minimize the amount of steering effort by providing pressurized fluid to increase the driver's input for steering. Driven by a belt on the engine, this Power Steering Pump draws fluid from an integral or remote reservoir, which through a high-pressure hose feeds a control valve in the rack and pinion that moves a hydraulic piston to make it easy to turn. Through this hydraulic loop, Lexus drivers get the advantage of light parking lot maneuvers and still have the safety of mechanical linkage should assist be lost. Early RX350 models applied constant-assist hydraulics; later RX350 models retained the same Power Steering Pump but incorporated an electronic flow valve to read the speed and steering angle to vary the assist and reduce highway over-boost. Both configurations share hoses and linkage, although the electronically tuned system of the newer Lexus RX350 SUVs gives a crisp feel without additional electric motors. When the Power Steering Pump belt is kept tight and the fluid is full, the power steering will not whine, leak, or become heavy, which is a hint of failure in the pump. Low pressure readings indicate that the Power Steering Pump needs to be replaced to get the solid steering back Lexus drivers expect.

Should you need to purchase new auto parts for your vehicle, we strongly suggest you consider the genuine Lexus RX350 Power Steering Pump available on LexusPartsNow.com. Our OEM Lexus RX350 Power Steering Pump 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 RX350 Power Steering Pump Parts Questions & Experts Answers

Power Steering Pump
44310-48070
Q: How to remove and install the power steering pump on Lexus RX350?
A:
The first step to work while handling the power steering pump is to unhook the cable of the negative terminal of the battery. Turn the steering wheel back and forth in its fullest extent several times to evacuate maximum fluid that can be siphoned from the power steering fluid reservoir with the help of a large syringe or suction gun; prepare a drain pan for the fluid spill while disconnecting the fluid hoses. Turn the right front wheel lug nuts on the counterclockwise direction, lift the vehicle, and place it on jackstands, then remove the right front wheel. If needed remove the right front fender apron seal and the liner on the right front. Next, remove the drivebelt. Remove the fluid feed hose from the pump and unscrew the electrical connector of the power steering pressure switch. Loosen the pressure line to pump union bolt and dis-connect the pressure line from the pump with the help of two spanners and make sure that you change all the sealing washers if required. After that, the mounting bolts will have to be unscrewed for the removal of the pump, although the upper bolt is partially disguised but will let go when the pump is removed. In regard to installation, it is recommended to reverse the process of removal when tightening the union bolt of pressure line, and mounting bolts to the recommended torque and adjusting the tension of the drivebelt. Last, replenish the amount of the fluid in the reservoir to the required level, and evacuate the system.