2003 Lexus RX300 Rear Shock and Struts

Your 2003 Lexus RX300 might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Rear Shock and Struts you desperately need.

We currently carry 15 Rear Shock and Struts to choose from for your 2003 Lexus RX300, and our inventory prices range from as little as $124.99 up to $258.99.

On top of low prices, Advance Auto Parts offers 4 different trusted brands of Rear Shock and Struts for the 2003 Lexus RX300. We only sell parts from trusted brands like Carquest Premium so that you can find quality parts you can count on.

Don’t take our word for it – check out customer ratings and reviews to buy with confidence. We have 2 reviews on our Rear Shock and Struts for the 2003 Lexus RX300 from previous customers.

Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Rear Shock and Struts stock in-person!

Rear Shock and Struts for Your 2003 Lexus RX300

Monroe – OESpectrum Strut (Part No.71498)

OESpectrum Strut

from

$133.99
Designed to restore a vehicle’s original factory drivability and performance, Monroe® OESpectrum® struts provide an exceptional level of handling precision and control while filtering out noise, vibration and harshness.

Product Features:
  • IMPROVES STABILITY — ASD (Acceleration Sensitive Damping) valving technology and fluon-banded piston deliver greater control and handling while improving ride comfort
  • EXCEPTIONAL HANDLING — Rod displaced valving, tuned specifically to each vehicle, adjusts to road extremes to provide consistency and a smooth ride (on most applications)
  • CONSISTENT RIDE — OE all-weather fluid contains special additives to assist with extreme temperatures and help reduce oil breakdown
  • IMPROVES PERFORMANCE — Nitrogen gas charge maintains tire-to-road contact for improved ride and handling by reducing aeration (on most applications)
  • LONGER SERVICE LIFE — Chrome-plated piston, bronze reinforced rod guide bearing and special single lip seal provide durability and longer service life (where applicable)
  • Nitrogen Gas Charged: For improved ride and handling, helps maintain tire to road contact by reducing aeration – on most applications
  • Unique Rod Guide and Single Lip Seal: Bronze reinforced rod guide bearing and special seal provides longer service life and consistent performance.
  • Special Dust Boot/Jounce Bumper: Protective dust boot reduces dirt and any moisture build-up. Jounce bumper helps prevent severe suspension movement. Dust boot & jounce bumper sold separately.
See More

KYB – Excel-G Strut Assembly (Part No.L300091262KYX)

Excel-G Strut Assembly

from

$158.08
The KYB Excel-G OE-equivalent direct fit Strut Assembly is engineered to restore the vehicle’s originally designed handling and control. The Excel-G Shocks are calibrated to compensate for worn suspensions and is a great choice to restore OE performance and original driving conditions. Restores a vehicle’s originally designed handling and control. The KYB Excel-G is identical to the GR2 except for the product name and paint color.

Product Features:
  • Direct fit application for ease of installation
  • Calibrated to compensate for worn suspensions
  • Components and valving are designed specifically for each application
  • The best choice to restore OE performance and normal driving conditions
  • Built with quality that matches or exceeds OE
  • Coverage for domestic and import cars, trucks, vans, minivans, and SUV,s
See More

Carquest Premium – Complete Strut Assembly: Includes Strut, Coil Spring and Mount (Part No.18-817036)

Complete Strut Assembly: Includes Strut, Coil Spring and Mount

from

$179.99
Carquest Premium complete strut assemblies are manufactured by a leading original equipment supplier (O.E.S.) for a perfect OE fit, form and function. Carquest Premium strut assemblies are pre-assembled units that make your ride control repair faster and easier with no special tools needed for installation. Our complete strut assemblies or loaded struts are rigorously tested for proven reliability and offer an industry-leading warranty.

Product Features:
  • Pre-assembled with all new strut, bearing plate, coil spring, dust cover and spring seat
  • Struts feature application-specific technology with exact strut valving and tuning for smoother, safer and more stable ride
  • Springs are built with U.S. grade steel and designed to match factory ride height and performance
  • OE quality strut mount, bearing plate and brackets
  • Complete strut assembly is extensively tested for functionality and durability
  • Built with a micro-smooth, chrome-plated piston rod
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Carquest Premium – Complete Strut Assembly 18-817035: Includes Strut, Coil Spring and Mount (Part No.18-817035)

Complete Strut Assembly 18-817035: Includes Strut, Coil Spring and Mount

from

$179.99
Carquest Premium complete strut assemblies are manufactured by a leading original equipment supplier (O.E.S.) for a perfect OE fit, form and function. Carquest Premium strut assemblies are pre-assembled units that make your ride control repair faster and easier with no special tools needed for installation. Our complete strut assemblies or loaded struts are rigorously tested for proven reliability and offer an industry-leading warranty.

Product Features:
  • Pre-assembled with all new strut, bearing plate, coil spring, dust cover and spring seat
  • Struts feature application-specific technology with exact strut valving and tuning for smoother, safer and more stable ride
  • Springs are built with U.S. grade steel and designed to match factory ride height and performance
  • OE quality strut mount, bearing plate and brackets
  • Complete strut assembly is extensively tested for functionality and durability
  • Built with a micro-smooth, chrome-plated piston rod
See More

Monroe – Complete Strut Assembly: Includes Strut, Coil Spring, and Mount (Part No.271499)

Complete Strut Assembly: Includes Strut, Coil Spring, and Mount

from

$258.99
Featuring a vehicle-specific design, Monroe Quick-Strut strut assemblies are fit checked, ride tested and engineered to restore factory ride height and ride performance. Assembled in Paragould, AR, they include all required components in a single unit.

Product Features:
  • QUICKER, SAFER, EASIER AND COMPLETE REPAIR – Includes everything you need for strut replacement in a single, fully assembled unit with no need for a spring compressor
  • RESTORES RIDE HEIGHT – Precisely calibrated to meet the OE design, each application-specific coil spring type is engineered to restore ride height and support the vehicle’s weight
  • VEHICLE-SPECIFIC DESIGN – Application-specific coil spring, mount and strut designs ensure optimized ride and handling experience unique to each vehicle profile
  • OE QUALITY – Preassembled upper strut mount, coil spring, and strut feature an OE-style design for seamless fit, form, and function
  • MADE TO LAST – Manufactured with high-quality steel, featuring a superior tube and weld design to deliver structural integrity and durability
  • MAINTAINS VEHICLE CONTROL – Reduces body sway, vibration and road harshness before it reaches the passenger cabin for improved vehicle handling
  • IMPROVES STEERING – Premium upper strut mount helps ensure smooth, like-new steering precision and prevents noise, vibration, harshness and memory steer
  • RUST RESISTANCE – Protective coating resists rust and corrosion while salt spray testing ensures it’s ready for the elements
  • ASSEMBLED IN THE USA This Quick-Strut assembly is assembled with pride in Paragould, Arkansas from domestic and imported components
See More

Monroe – OESpectrum Strut (Part No.71499)

OESpectrum Strut

from

$133.99
Designed to restore a vehicle’s original factory drivability and performance, Monroe® OESpectrum® struts provide an exceptional level of handling precision and control while filtering out noise, vibration and harshness.

Product Features:
  • IMPROVES STABILITY — ASD (Acceleration Sensitive Damping) valving technology and fluon-banded piston deliver greater control and handling while improving ride comfort
  • EXCEPTIONAL HANDLING — Rod displaced valving, tuned specifically to each vehicle, adjusts to road extremes to provide consistency and a smooth ride (on most applications)
  • CONSISTENT RIDE — OE all-weather fluid contains special additives to assist with extreme temperatures and help reduce oil breakdown
  • IMPROVES PERFORMANCE — Nitrogen gas charge maintains tire-to-road contact for improved ride and handling by reducing aeration (on most applications)
  • LONGER SERVICE LIFE — Chrome-plated piston, bronze reinforced rod guide bearing and special single lip seal provide durability and longer service life (where applicable)
  • Nitrogen Gas Charged: For improved ride and handling, helps maintain tire to road contact by reducing aeration – on most applications
  • Unique Rod Guide and Single Lip Seal: Bronze reinforced rod guide bearing and special seal provides longer service life and consistent performance.
  • Special Dust Boot/Jounce Bumper: Protective dust boot reduces dirt and any moisture build-up. Jounce bumper helps prevent severe suspension movement. Dust boot & jounce bumper sold separately.
See More

Suncore – Quick Strut (Part No.55S15908)

Quick Strut

from

$124.99
Quick Strut

Monroe – Complete Strut Assembly: Includes Strut, Coil Spring, and Mount (Part No.172104)

Complete Strut Assembly: Includes Strut, Coil Spring, and Mount

from

$251.99
Featuring a vehicle-specific design, Monroe Quick-Strut strut assemblies are fit checked, ride tested and engineered to restore factory ride height and ride performance. Assembled in Paragould, AR, they include all required components in a single unit.

Product Features:
  • QUICKER, SAFER, EASIER AND COMPLETE REPAIR – Includes everything you need for strut replacement in a single, fully assembled unit with no need for a spring compressor
  • RESTORES RIDE HEIGHT – Precisely calibrated to meet the OE design, each application-specific coil spring type is engineered to restore ride height and support the vehicle’s weight
  • VEHICLE-SPECIFIC DESIGN – Application-specific coil spring, mount and strut designs ensure optimized ride and handling experience unique to each vehicle profile
  • OE QUALITY – Preassembled upper strut mount, coil spring, and strut feature an OE-style design for seamless fit, form, and function
  • MADE TO LAST – Manufactured with high-quality steel, featuring a superior tube and weld design to deliver structural integrity and durability
  • MAINTAINS VEHICLE CONTROL – Reduces body sway, vibration and road harshness before it reaches the passenger cabin for improved vehicle handling
  • IMPROVES STEERING – Premium upper strut mount helps ensure smooth, like-new steering precision and prevents noise, vibration, harshness and memory steer
  • RUST RESISTANCE – Protective coating resists rust and corrosion while salt spray testing ensures it’s ready for the elements
  • ASSEMBLED IN THE USA This Quick-Strut assembly is assembled with pride in Paragould, Arkansas from domestic and imported components
See More

KYB – Gas Strut (Part No.334264)

Gas Strut

from

$179.99
Ride Comfort may be important, but restoring a vehicles Ride Control, stability, stopping, lane change responsiveness and handling is critical. KYB Excel-G Shocks and Struts are designed for the most important performance purpose: Restoring the vehicles original capabilities. KYB is a world leading supplier of shocks and struts to new vehicle manufacturers and the Excel-G is made on the very same KYB OE assembly lines, uses the same OE quality components and is calibrated to restore original, designed performance, not change it. That has earned Excel-G the classification: OEA (Original Equipment for the Aftermarket). The KYB Excel-G is a nitrogen gas-charged, twin-tube design that includes every quality component that our global OEM products include and it is the preferred choice by professional technicians.

Product Features:
  • #1 Recommended Original Equipment Replacement Choice For Asian Subs And Crossovers
  • The KYB Excel-G Helps Restore The Designed Control And Handling Of Your Import Suva
  • The KYB Excel-G Uses A Triple Lip Fluid Seal To Reduce The Chance Of Oil And Gas Leaking Out
  • Vehicle Specific, Hand Assembled, In-House Damping Valves Correctly Manage Tire Contact, Steering Response And Body Movement
  • Made In Use
  • Electronic Safety Systems Depend On The Suspension, Brakes And Tires Operating As The Vehicle Manufacturer Intended. The KYB Excel-G Helps Keep Electronic Safety Systems Performing As Designed.
  • KYB Has The Strongest And Thickest Strut Bodies And Brackets In The Industry; Minimizing Flex To Maintain Correct Alignment In All Conditions
  • To Reduce The Chance Of Noise And Vibration KYB Recommends Installing New Strut Mounts, Part Number: Sm5175
  • Protect Your New Struts From Dirt, Debris And Salt With A KYB Strut Boot, Part Number: Sb101
See More

KYB – Gas Strut (Part No.334263)

Gas Strut

from

$172.99
Ride Comfort may be important, but restoring a vehicles Ride Control, stability, stopping, lane change responsiveness and handling is critical. KYB Excel-G Shocks and Struts are designed for the most important performance purpose: Restoring the vehicles original capabilities. KYB is a world leading supplier of shocks and struts to new vehicle manufacturers and the Excel-G is made on the very same KYB OE assembly lines, uses the same OE quality components and is calibrated to restore original, designed performance, not change it. That has earned Excel-G the classification: OEA (Original Equipment for the Aftermarket). The KYB Excel-G is a nitrogen gas-charged, twin-tube design that includes every quality component that our global OEM products include and it is the preferred choice by professional technicians.

Product Features:
  • #1 recommended Original Equipment replacement choice for Asian SUVs and Crossovers
  • Specifically calibrated to help restore the original handling and control characteristics of import SUVs
  • Uses a seamless working cylinder matched with a Teflon coated piston band for a positive seal and longer life
  • Triple chrome plated piston rod and multi-lip oil seals that reduce wear
  • Solid seamless mounting eye rings and bolt bushings to eliminate rattles
  • Engineered to help vehicles with electronic safety systems (ESC, ABS, etc.)
  • To reduce the chance of noise and vibration KYB recommends installing new strut mounts, part number: SM5175
  • Protect your new struts from dirt, debris and salt with a KYB Strut Boot, part number: SB101
See More

KYB – Gas Strut (Part No.334270)

Gas Strut

from

$175.99
Product Features:
  • #1 recommended Original Equipment replacement choice for Asian SUVs and Crossovers
  • Specifically calibrated to help restore the original handling and control characteristics of the Lexus RX
  • Uses a seamless working cylinder matched with a Teflon coated piston band for a positive seal and longer life
  • Triple chrome plated piston rod and multi-lip oil seals that reduce wear
  • Solid seamless mounting eye rings and bolt bushings to eliminate rattles
  • Engineered to help vehicles with electronic safety systems (ESC, ABS, etc.)
  • To reduce the chance of noise and vibration KYB recommends installing new strut mounts, part number: SM5175
  • Protect your new struts from dirt, debris and salt with a KYB Strut Boot, part number: SB101
See More

KYB – Excel-G Strut Assembly (Part No.L300091255KYX)

Excel-G Strut Assembly

from

$160.46
The KYB Excel-G OE-equivalent direct fit Strut Assembly is engineered to restore the vehicle’s originally designed handling and control. The Excel-G Shocks are calibrated to compensate for worn suspensions and is a great choice to restore OE performance and original driving conditions. Restores a vehicle’s originally designed handling and control. The KYB Excel-G is identical to the GR2 except for the product name and paint color.

Product Features:
  • Direct fit application for ease of installation
  • Calibrated to compensate for worn suspensions
  • Components and valving are designed specifically for each application
  • The best choice to restore OE performance and normal driving conditions
  • Built with quality that matches or exceeds OE
  • Coverage for domestic and import cars, trucks, vans, minivans, and SUV,s
See More

KYB – Excel-G Strut Assembly (Part No.L300091254KYX)

Excel-G Strut Assembly

from

$160.32
The KYB Excel-G OE-equivalent direct fit Strut Assembly is engineered to restore the vehicle’s originally designed handling and control. The Excel-G Shocks are calibrated to compensate for worn suspensions and is a great choice to restore OE performance and original driving conditions. Restores a vehicle’s originally designed handling and control. The KYB Excel-G is identical to the GR2 except for the product name and paint color.

Product Features:
  • Direct fit application for ease of installation
  • Calibrated to compensate for worn suspensions
  • Components and valving are designed specifically for each application
  • The best choice to restore OE performance and normal driving conditions
  • Built with quality that matches or exceeds OE
  • Coverage for domestic and import cars, trucks, vans, minivans, and SUV,s
See More

KYB – Excel-G Strut Assembly (Part No.L300091261KYX)

Excel-G Strut Assembly

from

$157.22
The KYB Excel-G OE-equivalent direct fit Strut Assembly is engineered to restore the vehicle’s originally designed handling and control. The Excel-G Shocks are calibrated to compensate for worn suspensions and is a great choice to restore OE performance and original driving conditions. Restores a vehicle’s originally designed handling and control. The KYB Excel-G is identical to the GR2 except for the product name and paint color.

Product Features:
  • Direct fit application for ease of installation
  • Calibrated to compensate for worn suspensions
  • Components and valving are designed specifically for each application
  • The best choice to restore OE performance and normal driving conditions
  • Built with quality that matches or exceeds OE
  • Coverage for domestic and import cars, trucks, vans, minivans, and SUV,s
See More

Suncore – Quick Strut (Part No.55S15931)

Quick Strut

from

$139.99
Quick Strut

FAQs for 2003 Lexus RX300 Rear Shock and Struts

What are the most popular Rear Shock and Struts for the 2003 Lexus RX300?

With 4 brands you can trust, our most popular Rear Shock and Struts for the 2003 Lexus RX300 parts are:
Complete Strut Assembly: Includes Strut, Coil Spring and Mount
from $179.99
This product is not rated
Complete Strut Assembly: Includes Strut, Coil Spring and Mount
Rear Shock and Struts
Complete Strut Assembly 18-817035: Includes Strut, Coil Spring and Mount
from $179.99
This product is not rated
Complete Strut Assembly 18-817035: Includes Strut, Coil Spring and Mount
Rear Shock and Struts
Complete Strut Assembly: Includes Strut, Coil Spring, and Mount
from $258.99
This product is not rated
Complete Strut Assembly: Includes Strut, Coil Spring, and Mount
Rear Shock and Struts