Lexus RX300 Engine Cooling Parts

Your One-Stop Shop For Trusted Lexus RX300 Engine Cooling Parts

If you’re in search of Lexus RX300 Engine Cooling Parts aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 62 Engine Cooling Parts from top brands with prices ranging from $1.24 to $569.99.

Beyond great prices, we stock trusted brands manufacturing all types of Engine Cooling Parts for your Lexus RX300. Of the 25 OEM and aftermarket parts brands we carry, some of the most popular are Permatex, Carquest Premium, and Felpro.

And don’t forget to read customer reviews across all Engine Cooling Parts categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Engine Cooling Parts have to cost top dollar, and we prove it. Browse our top Lexus RX300 Engine Cooling Parts below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Essential Lexus RX300 Engine Cooling Parts

Forecast – Engine Cooling Auxiliary Thermo-Fan Switch (Part No.G5030261467FOR)

Engine Cooling Auxiliary Thermo-Fan Switch

from

$47.10
The Forecast Engine Cooling Thermo-Fan Switch is a high quality Original Equipment replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Corrosion resistant housings
  • Nickel-plated or brass terminals for superior conductivity
  • High-temp composite O.E.M.-type connectors designed to mate with vehicle wiring harness without modification
  • Thermal switches matched to OEM temperatures to assure consistent performance
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Koyo Cooling – Radiator (Part No.G1000173100KCS)

Radiator

from

$247.31
Radiator

Factory Air – Coolant Temp Sensor Switch (Part No.36424)

Coolant Temp Sensor Switch

from

$34.05
High quality OE replacement part with all components needed to complete the job

Product Features:
  • Contains gaskets, O-rings, or seals to properly replace the product
  • Brass construction for accurate temperature sensing
  • Color coded for easy identification
  • Zinc coated terminal to resist corrosion
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Carquest Premium – Radiator Cap: 16 PSI (Part No.10333)

Radiator Cap: 16 PSI

from

$21.99
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today’s vehicles.

Product Features:
  • Safety lever to vent coolant pressure before removal
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
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Carquest Premium – Coolant Housing/Water Outlet (Part No.85353)

Coolant Housing/Water Outlet

from

$56.99
We are proud to offer this CARQUEST product line: CARQUEST Water Outlets. Our products are engineered and tested to provide years of trouble free operation and designed to be hassle free OE replacement part that meets and/or exceeds OE standards. Backed by over 50 years of mobile temperature control experience, fix it once and fix it right with CARQUST Water Outlets and Thermostat Housings.

Product Features:
  • Meets and/or exceeds OEM standard
  • Includes quality gasket or O-ring to ensure proper seal (where applicable)
  • Coated with corrosion and rust inhibitor
  • 100% leak tested
  • Direct-fit replacement for ease of installation
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Carquest Premium – Standard Thermostat: 170 Degrees (Part No.14077)

Standard Thermostat: 170 Degrees

from

$17.29
Carquest Premium Thermostats are manufactured with OEM quality materials and safety standards by an OE Supplier. This thermostat will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Copper case and wax compound assures rapid response to temperature changes in the coolant. Offset design, air relief valve, and OEM style seals included where applicable.

Product Features:
  • High grade stainless steel and copper construction
  • Meets or exceeds OEM standards
  • Consistent and precise response to cooling system needs
  • Original equipment design for worry-free direct fit replacement
  • 100% tested and calibrated
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Permatex – The Right Stuff: 1 Minute Gasket Maker: Grey, 3 OZ (Part No.25238)

The Right Stuff: 1 Minute Gasket Maker: Grey, 3 OZ

from

$19.99
Permatex’s The Right Stuff 1 Minute Series offers the fastest return to service in just 1 minute! This leak-proof, elastomeric “Formed-in-place” material is more reliable and longer lasting than pre-cut gaskets. It is blowout resistant and protects against leaks and seepage caused by vibration and thermal expansion. The Right Stuff 1 Minute Grey is specified for high torque and high vibration applications and is formulated to meet or exceed performance standards for long-term sealability, durability and handling.

Product Features:
  • Designed to perform under higher torque loads associated with engines having closely spaced bolt patterns
  • Sensor-safe, non-corrosive, RTV silicone
  • Protects against leaks caused by vibration and thermal expansion
  • Meets performance specs of OE silicone gaskets
  • Quickly returns vehicle to service in just 1 minute
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Felpro – Engine Coolant Thermostat Seal (Part No.35445)

Engine Coolant Thermostat Seal

from

$5.49
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
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Dorman – Radiator Mount Bushing (Part No.926-279)

Radiator Mount Bushing

from

$21.99
This radiator mount bushing is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this radiator mount bushing matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this bushing is a reliable replacement for an original part that has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Permatex – Sensor-Safe, High-Torque RTV Silicone Gasket Maker (Part No.82194)

Sensor-Safe, High-Torque RTV Silicone Gasket Maker

from

$11.49
Permatex Ultra Grey is specified for high torque and high vibration applications. Ultra Grey offers a sensor-safe, low odor, non-corrosive formula and is OEM specified to fit dealership warranty requirements. This high performance gasket maker meets performance specs of OE silicone gaskets and can be used on high torque and vibration applications such as valve covers, water pump, intake manifold end seals ad thermostat housings.

Product Features:
  • High torque and rigidity
  • Sensor-safe, non-corrosive formula
  • OEM specified
  • Low-odor, non-corrosive formula
  • Ideal for closed spaced bolt patterns
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Carquest Premium – Radiator Cap: 16 PSI (Part No.10233)

Radiator Cap: 16 PSI

from

$13.99
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today’s vehicles.

Product Features:
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
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Carquest – Engine Cooling Fan Switch (Part No.TFS627)

Engine Cooling Fan Switch

from

$52.05
High-quality products that meet OE appearance and performance to provide professional technicians and DIYers with a cost-effective solution.

Product Features:
  • Designed to OE standards for ease of installation
  • In manufacturing, we custom form the wax pellets for different temperature range specifications. All units are calibrated & tested to confirm switch actuation at their specified temperature
  • The switch is designed using a formed bimetallic contact arm. The bimetal contact movement is achieved using the different expansion rates of two metals fused together. This is a creep action device, provides precise performance
  • In production, all thermal switches are factory-calibrated to make electrical contact at the specified lower-temperature set point
  • Robust design and high grade materials meet the stringent demands of today’s service professional
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Carquest Premium – A/C Clutch Relay (Part No.RAA1362)

A/C Clutch Relay

from

$28.99
Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Dorman – Radiator Fan Assembly: Dual, Cost Effective & Reliable (Part No.621-171)

Radiator Fan Assembly: Dual, Cost Effective & Reliable

from

$211.99
This engine cooling fan assembly is precision-engineered to match the fit and performance of the stock radiator fan on specific vehicle years, makes and models. It has been rigorously tested to ensure it cools as effectively as the original part.

Product Features:
  • Ideal replacement – this engine cooling fan assembly was precision-engineered to match the fit and performance of the stock radiator fan assembly on specific vehicles
  • Complete package – assembly is designed with the same materials and components as the original part
  • Quality assured – motors are tested in laboratory settings to ensure performance
  • Cost effective and reliable – trustworthy manufacturing for far less than same part at the dealership
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Carquest Premium – Radiator Cap Tester Adapter (Part No.12021)

Radiator Cap Tester Adapter

from

$17.79
Tester adapter for the MT-300 cooling system pressure testers. Professional grade test equipment to ensure an automotive cooling system is operating at the correct pressure. Made from high quality materials to ensure durability. Designed to test automotive coolant caps.

Product Features:
  • Machined metal construction
  • Works with MT-300 pressure tester
  • Tests coolant caps
  • Professional quality
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Sankei Switches – Sankei Switches Radiator Cap (Part No.G101045813SAK)

Sankei Switches Radiator Cap

from

$10.06
The Sankei Switches radiator cap range has been developed to operate within original equipment manufacturer’s specifications. A faulty radiator cap can cause your car to boil-over at a lower temperature. Test or replace the coolant cap when servicing the cooling system.

Product Features:
  • Meets Original Equipment specifications.
  • Made from premium materials.
  • Designed to function on open cooling systems and overflow reservoir type systems.
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Carquest Premium – Radiator Fan Assembly: 75283, Dual, With Original Equipment Connector (Part No.75283)

Radiator Fan Assembly: 75283, Dual, With Original Equipment Connector

from

$166.99
Product Features:
  • Motors built and tested to OE specifications
  • Made in ISO certified facilities
  • Out of box installation
  • Wide selection of early/late model applications for domestic and import vehicles
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Bosch – Water Pump (Part No.G3000294542BOS)

Water Pump

from

$81.33
100% New for maximum cooling and optimum performance. Restore your vehicle’s cooling system to proper working order, and minimize the risk of premature failure, by installing a Bosch 100% New Water Pump. Bosch Water Pumps are designed to operate in the highly-stressful environment of today’s cooling systems. Each pump features 100% new, OEM-quality components. Nothing is remanufactured. Count on Bosch 100% New Water Pumps for superior performance and maximum service life, and be assured that the heart of your vehicle’s cooling system will pump reliably for years to come.

Product Features:
  • OE-Equivalent and direct fit application.
  • 100% new with no remanufactured parts.
  • Precision pressed hub and impeller.
  • Precision unitized bearing assembly.
  • Precision machined mounting surfaces.
  • Includes all gaskets and hardware.
  • Optimum cooling performance and longevity.
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Stant – THERMOSTAT SEAL (Part No.27286)

THERMOSTAT SEAL

from

$1.49
THERMOSTAT SEAL

Carquest Premium – Engine Cooling Fan Switch (Part No.TFA1008)

Engine Cooling Fan Switch

from

$97.99
CARQUEST premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.
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Felpro – WATER OUTLET GASKET (Part No.35648)

WATER OUTLET GASKET

from

$1.49
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design
  • Manufactured for the sealing repair environment
  • Validated for fit, form, and function
  • Quality that you can trust
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Carquest Premium – Radiator Cap Tester Adapter (Part No.12024)

Radiator Cap Tester Adapter

from

$16.49
Tester adapter for the MT-300 cooling system pressure testers. Professional grade test equipment to ensure an automotive cooling system is operating at the correct pressure. Made from high quality materials to ensure durability. Designed to test automotive coolant caps.

Product Features:
  • Machined metal construction
  • Works with MT-300 pressure tester
  • Tests coolant caps
  • Professional quality
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Dorman – Plastic Drain Cock Screw-In Type Screw-M14-2.0 (Part No.490-216.1)

Plastic Drain Cock Screw-In Type Screw-M14-2.0

from

$2.99
This radiator drain petcock is a direct replacement for the original equipment plug that may have deteriorated or corroded. Made of quality materials, this petcock is engineered to strict standards for durable use over time.

Product Features:
  • Direct replacement – this radiator drain petcock matches the fit and function of the original equipment part
  • Durable construction – this part is made of quality materials for a long service life
  • Saves money – offers original equipment quality at a competitive price
  • Quality assured – this petcock has undergone virtual testing to assure proper fit and function
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Felpro – O-RING (Part No.35654)

O-RING

from

$5.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Meets or exceeds all original equipment specifications
  • Application specific design to ensure a perfect fit
  • Engineered and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
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Permatex – The Right Stuff Grey Instant Gasket Maker, 147ml Cartridge (Part No.34311)

The Right Stuff Grey Instant Gasket Maker, 147ml Cartridge

from

$28.49
Specifically designed to perform under higher torque loads associated with engines having closely spaced bolt patterns (typically import vehicles). This product is blowout resistant, allowing leakproof gaskets to be made and put into service in just one minute. Sensor-safe, The Right Stuff GREY seals instantly, forming a reliable, long lasting elastomeric rubber gasket that outperforms pre-molded gaskets. Specified by major import OEMs, this material is resistant to powertrain fluids (oil, coolant and ATF) and operates in environments to 450°F (232°C) continuous; 500°F (260°C) intermittent.

Product Features:
  • Ideal for rigid cast aluminum parts
  • Meets OEM Specifications
  • Sensor safe & non-corrosive
  • Performs under higher torque loads associated with engines having closely spaced bolt patterns (typical of import vehicles)
  • Blowout resistant, allowing leakproof gaskets to be made in just one minute
  • Seals instantly, forming a reliable, long lasting elastomeric rubber gasket
  • Superior resistance to powertrain fluids including engine oil, transmission fluid, gear lube and coolants
  • Temperature range -60°C to 260°C (-75°F to 500°F) intermittent
  • Applications: Automotive, industrial and marine gaskets, valve covers, gearbox covers, pumps, compressors, oil pans, thermostat housings, water pumps, etc.
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Engine Cooling Parts Brands You Can Trust For Your Lexus RX300

25 trusted brands of Engine Cooling Parts line our shelves, ready to help keep your Lexus RX300 running smooth. Below are some of the most popular brands and their top Engine Cooling Parts offerings:

Popular Beck/Arnley Engine Cooling Parts

Beck/Arnley products for the Lexus RX300 span several categories. Some of the highest-rated Beck/Arnley Engine Cooling Parts that will fit your Lexus RX300 are:
Thermostat Gasket
from $5.49
(25)
Thermostat Gasket
Thermostat and Water Outlet Gaskets

Top Lexus RX300 Engine Cooling Parts from Carquest Premium

Your Lexus RX300 will be purring again thanks to Carquest Premium brand Engine Cooling Parts available for online order or in-store pick up. Popular Carquest Premium parts include:
Radiator Cap: 16 PSI
from $13.99
(193)
Radiator Cap: 16 PSI
Engine Coolant Thermostat Housing Caps
Radiator Cap: 16 PSI
from $14.99
(137)
Radiator Cap: 16 PSI
Radiator Caps
Standard Thermostat: 180 Degrees
from $17.79
(75)
Standard Thermostat: 180 Degrees
Thermostats

Most Purchased Lexus RX300 Engine Cooling Parts from Permatex

When you buy the most frequently purchased Permatex brand Engine Cooling Parts, you can be confident it will be the right part for your Lexus RX300. Here are the Permatex Engine Cooling Parts Advanced Auto customers buy the most:
Water Pump & Thermostat RTV Silicone Gasket Maker, 0.5 OZ
from $6.99
(288)
Water Pump & Thermostat RTV Silicone Gasket Maker, 0.5 OZ
Engine Water Pump Inlet Pipe Gaskets
Radiator Cap: 16 PSI
from $14.99
(137)
Radiator Cap: 16 PSI
Radiator Caps
Radiator Cap: 16 PSI
from $13.99
(193)
Radiator Cap: 16 PSI
Engine Coolant Thermostat Housing Caps

FAQs for Lexus RX300 Engine Cooling Parts

What are the most purchased Engine Cooling Parts for the Lexus RX300?

Out of 62 Engine Cooling Parts for the Lexus RX300, the most popular in our inventory are:
Water Pump & Thermostat RTV Silicone Gasket Maker, 0.5 OZ
from $6.99
(288)
Water Pump & Thermostat RTV Silicone Gasket Maker, 0.5 OZ
Engine Water Pump Inlet Pipe Gaskets
Sensor-Safe, High-Torque RTV Silicone Gasket Maker
from $11.49
(95)
Sensor-Safe, High-Torque RTV Silicone Gasket Maker
Water Pump Housing Gaskets
Engine Coolant Thermostat Seal
from $5.49
(76)
Engine Coolant Thermostat Seal
Engine Coolant Water Inlet Seals

What are the top-rated Lexus RX300 Engine Cooling Parts?

Top-rated Engine Cooling Parts for your Lexus RX300 based on customer reviews/ratings are:
Radiator Cap: 13 PSI
from $14.99
(53)
Radiator Cap: 13 PSI
“Great fit! No issues!”
Radiator Cap: 16 PSI
from $21.99
(41)
Radiator Cap: 16 PSI
“Mustang was heating up. Found out was cap. This cap pops to release pressure so not to pop radiator. Works great. Will buy again when needed.”
Standard Thermostat: 170 Degrees
from $17.29
(33)
Standard Thermostat: 170 Degrees
“Return it”