2003 Lexus IS300 Engine Cooling Parts
Keep Your 2003 Lexus IS300 in Top Shape with Quality Engine Cooling Parts
Whether you’re repairing or upgrading your Engine Cooling Part, using high-quality parts is key to keeping your 2003 Lexus IS300 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Thermostat and Water Outlet Gaskets, Radiators, and Thermostats. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Top-Rated Engine Cooling Parts from Trusted Brands
Looking for a reliable Engine Cooling Part? We’ve got you covered with options from brands you know and trust like Carquest Premium, FELPRO, and Dorman. For example, Carquest Premium Engine Cooling Parts start at just $16.99 with an average 4.4 star rating. FELPRO and Dorman offer similar pricing and quality, backed by strong customer feedback. With over 478 reviews and a solid 4 star average, you can shop with confidence knowing other Lexus IS300 owners approve.
Competitive Prices and Extensive Inventory
The average price for a 2003 Lexus IS300 Engine Cooling Part at Advance Auto Parts is around $55.88, with a range that starts at $1.49 and goes up to $325.99. With 20 options in stock from 9 trusted brands, finding the right fit is easy. Popular picks like UltraStat Thermostat: 180 Degrees, Multi-Purpose Relay, and Radiator Drain Cocks start at just $7.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Engine Cooling Part, don’t forget to check out other key components like Blower Motor and Related Products and HVAC Electrical Parts. At Advance Auto Parts, we’re here to help you keep your 2003 Lexus IS300 in peak condition, inside and out.
Find Your Specific 2003 Lexus IS300 Engine Cooling Parts
Looking for the perfect Engine Cooling Part for your 2003 Lexus IS300? You’re in the right place. Below, you’ll find links to various types of Engine Cooling Parts that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Engine Cooling Parts, ensuring durability and a precise fit for your Lexus IS300. Whether you’re driving a 2003 model or another popular model year like
2004,
2005,
2016,
2017,
2018,
2019,
2020,
2021, and
2022, we’ve got you covered. Purchasing Engine Cooling Parts from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Engine Cooling Parts that fit your vehicle.
Essential 2003 Lexus IS300 Engine Cooling Parts
Motorad UltraStats – UltraStat Thermostat: 180 Degrees (Part No.5298-180)
from
$28.99
This premium upgraded thermostat is everything you were looking for. UltraStat Thermostats are the toughest thermostats on the market. All heavy gauge stainless steel construction provides long-life durability, as well as complete corrosion resistance. Exclusive BLVT Valve technology minimizes thermal shock to cooling system components. This is the perfect upgrade to help insure your cooling system is working exactly as you need and expect it to for longevity.
Product Features:
See More
Product Features:
- Exclusive BLVT Valve Technology minimizes thermal shock to cooling system components
- Heavy gauge stainless steel components offer increased reliability and long-lasting durability
- Stainless steel thermal element for unmatched corrosion resistance and revolutionary REAX wax mixture provides quicker reaction time
- AccuSpring Design for stable temperature control and increased cabin comfort
Carquest Premium – Standard Thermostat: 140 Degrees (Part No.298-140)
from
$25.99
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:
See More
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
Carquest Premium – Engine Cooling Fan Switch (Part No.TFA1023)
from
$91.99
Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The Engine Cooling Fan Switch regulates the operation of the cooling fan based on engine temperature, preventing overheating and ensuring optimal engine performance by maintaining a safe operating temperature. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.
Product Features:
See More
Product Features:
- Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
- Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
- Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
- Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.
Carquest Premium – Radiator Cap: 16 PSI (Part No.10242)
from
$16.99
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:
See More
Product Features:
- Maintains proper cooling system pressure
- Easy installation and removal
- 100% tested to ensure proper pressure and longevity
- Meets all OEM specifications
Carquest Premium – Engine Coolant Reservoir Cap (Part No.10254)
from
$10.99
Manufactured to meet all OEM specifications. Designed to be easy to install and remove. Manufactured from high quality components with proper relief and vacuum valves. Quality tested to stand up to even the most demanding automotive cooling systems.
Product Features:
See More
Product Features:
- Maintains proper cooling system pressure
- Easy installation and removal
- 100% tested to ensure proper pressure and longevity
- Meets all OEM specifications
Carquest Premium – Radiator Cap Tester Adapter (Part No.12024)
from
$17.99
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:
See More
Product Features:
- Machined metal construction
- Works with MT-300 pressure tester
- Tests coolant caps
- Professional quality
Delphi – Engine Coolant Temperature Sensor (Part No.TS10198)
from
$41.49
Delphi’s history is one of OE heritage and quality. Our global technical requirements include design specifications and validation testing based on over 100 years of OE experience. Our material selections, material thickness, and material types are built from OE specifications to exceed aftermarket expectations. We put in place strict manufacturing processes to ensure quality control in every part we make. Delphi’s pioneering spirit delivers innovative solutions designed to support the aftermarket in servicing the vehicles of today, and tomorrow.
Product Features:
See More
Product Features:
- Delphi temperature sensors deliver accurate readings and optimal performance
- Delphi’s one-piece design and automated production process eliminates internal connectors and failure points
- Each sensor is electrically insulated to eliminate interference from other components in the vehicle
- Delphi temperature sensors are impervious to electrical noise and interference
AISIN – TEMPERATURE SENSOR (Part No.THSAZ-8001)
from
$36.99
TEMPERATURE SENSOR
DENSO – Relay (Part No.567-0046)
from
$17.99
DENSO+s First Time Fit relays are no different from the OE relays DENSO has manufactured for over 60 years + built to be quiet, efficient, and reliable. Designed and manufactured to outlast the closest competitor by a minimum of ten times more life cycles, DENSO+s First Time Fit Relays will most likely out last your car. Holding approximately 30,000 active patents worldwide – approximately 7,300 in the United States – DENSO is going all out to design groundbreaking systems and components tuned especially to consumers’ specifications – whether they are drivers, passengers, pedestrians or society as a whole.
See More
Carquest Premium – Radiator: With Transmission Oil Cooler (Part No.432635)
from
$297.99
Carquest Premium radiators are designed and engineered for maximum performance, using the highest-grade materials to ensure all radiators meet or exceed original equipment (O.E.) fit, form and function. Carquest Premium radiators are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Most modern vehicles use radiators with plastic tanks and our parts are engineered with integrated ribbing to prevent damage during thermal cycling. Carquest Premium radiators are also 100% tested to ensure a durable, leak-free cooling system repair.
Product Features:
See More
Product Features:
- Thermal tested under real-life temperature simulations
- High tensile strength aluminum for maximum crimp strength
- Plastic tanks are engineeredáwith integrated ribbingáfor addedástrength to withstand cracks, bowing and distortion during thermal cycles
- Thermal expansion slots extend core life and reduce failure rates by allowing improved core expansion and contraction during systematic heat cycles
Carquest Premium – Radiator (Part No.813477)
from
$178.99
Carquest Premium radiators are designed and engineered for maximum performance, using the highest-grade materials to ensure all radiators meet or exceed original equipment (O.E.) fit, form and function. Carquest Premium radiators are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Most modern vehicles use radiators with plastic tanks and our parts are engineered with integrated ribbing to prevent damage during thermal cycling. Carquest Premium radiators are also 100% tested to ensure a durable, leak-free cooling system repair.
Product Features:
See More
Product Features:
- Thermal tested under real-life temperature simulations
- High tensile strength aluminum for maximum crimp strength
- Plastic tanks are engineeredáwith integrated ribbingáfor addedástrength to withstand cracks, bowing and distortion during thermal cycles
- Thermal expansion slots extend core life and reduce failure rates by allowing improved core expansion and contraction during systematic heat cycles
Dorman – Coolant Housing/Water Outlet: with Housing and Gasket, 75 Degree Neck Angle (Part No.902-5070)
from
$21.99
This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.
Product Features:
See More
Product Features:
- Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
- Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
- Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
- Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings
Dorman – Plastic Drain Cock Screw-In Type Screw-M14-2.0 (Part No.490-216.1)
from
$4.99
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:
See More
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
Dorman – Help – Radiator Drain Cocks (Part No.61125)
from
$7.99
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:
See More
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
Felpro – Engine Coolant Thermostat Housing Gasket (Part No.35809)
from
$6.49
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
See More
Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design
- Validated for fit, form, and function
- Quality that you can trust
- Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
Felpro – WATER OUTLET GASKET (Part No.35767)
from
$3.29
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
See More
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
Felpro – Engine Coolant Thermostat Seal (Part No.35445)
from
$6.49
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
See More
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
Carquest Premium – Multi-Purpose Relay (Part No.RAA1261)
from
$48.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
Product Features:
See More
Product Features:
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
- Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
- Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
- Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
Carquest Premium – Multi-Purpose Relay (Part No.RAA1244)
from
$46.99
Relays are electrical switches used to convert a small electrical load into a circuit capable of handling a high amperage load. Computers and small switches are not designed to carry the higher amperage requirement of a circuit that may have an electric motor, solenoid, or high amperage lighting fixture. Within a relay are contacts that are controlled with electromagnetism, when the circuit switch commands the device on or off, magnetism will pull or release the contact arm closing or opening the contacts within the relay that carry the voltage.
Product Features:
See More
Product Features:
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
- Computer-Aided Design (CAD), laser scanning and 3D printing – utilizing Fused Deposition Modeling (FDM) and Stereolithography (SLA) – in the part design process ensures speed-to-market and a precise fit guaranteed.
- Where applicable, robust circuit board design increases durability due to heat, shock, and random electro-magnetic pulses (EMP) and power spikes.
- Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
- 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
- 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
Dorman – Radiator Fan Assembly: Dual, Cost Effective and Reliable (Part No.620-558)
from
$325.99
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:
See More
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
Stant – THERMOSTAT SEAL (Part No.27286)
from
$1.49
THERMOSTAT SEAL
Felpro – Engine Coolant Outlet Gasket (Part No.35801)
from
$4.99
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:
See More
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
Popular 2003 Lexus IS300 Engine Cooling Parts Categories
Most Popular Thermostat and Water Outlet Gasket for 2003 Lexus IS300s
Enhance your 2003 Lexus IS300 with this popular Thermostat and Water Outlet Gasket we have in stock, for $6.49.
Felpro – Engine Coolant Thermostat Seal (Part No.35445)
from
$6.49
Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
See More
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
Best-Selling 2003 Lexus IS300 Radiator
Upgrade your IS300 with our best-selling Radiator with a 4 Starts rating across 7 reviews.
Carquest Premium – Radiator: With Transmission Oil Cooler (Part No.432635)
from
$297.99
Carquest Premium radiators are designed and engineered for maximum performance, using the highest-grade materials to ensure all radiators meet or exceed original equipment (O.E.) fit, form and function. Carquest Premium radiators are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Most modern vehicles use radiators with plastic tanks and our parts are engineered with integrated ribbing to prevent damage during thermal cycling. Carquest Premium radiators are also 100% tested to ensure a durable, leak-free cooling system repair.
Product Features:
See More
Product Features:
- Thermal tested under real-life temperature simulations
- High tensile strength aluminum for maximum crimp strength
- Plastic tanks are engineeredáwith integrated ribbingáfor addedástrength to withstand cracks, bowing and distortion during thermal cycles
- Thermal expansion slots extend core life and reduce failure rates by allowing improved core expansion and contraction during systematic heat cycles
Top-Quality Thermostats for 2003 Lexus IS300s
Choose a high-quality OEM or aftermarket Thermostat for Lexus IS300s and enjoy top-notch performance from $17.29.
Carquest Premium – Standard Thermostat: 180 Degrees (Part No.14108)
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:
See More
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
Motorad UltraStats – UltraStat Thermostat: 180 Degrees (Part No.5298-180)
from
$28.99
This premium upgraded thermostat is everything you were looking for. UltraStat Thermostats are the toughest thermostats on the market. All heavy gauge stainless steel construction provides long-life durability, as well as complete corrosion resistance. Exclusive BLVT Valve technology minimizes thermal shock to cooling system components. This is the perfect upgrade to help insure your cooling system is working exactly as you need and expect it to for longevity.
Product Features:
See More
Product Features:
- Exclusive BLVT Valve Technology minimizes thermal shock to cooling system components
- Heavy gauge stainless steel components offer increased reliability and long-lasting durability
- Stainless steel thermal element for unmatched corrosion resistance and revolutionary REAX wax mixture provides quicker reaction time
- AccuSpring Design for stable temperature control and increased cabin comfort
Carquest Premium – Standard Thermostat: 140 Degrees (Part No.298-140)
from
$25.99
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:
See More
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
Our Top Pick for a 2003 Lexus IS300 Coolant Reservoir Cap
Invest in a
durable Coolant Reservoir Cap for your 2003 Lexus, knowing you’re getting trusted brands and expert craftsmanship.
Carquest Premium – Radiator Cap: 16 PSI (Part No.10242)
from
$16.99
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:
See More
Product Features:
- Maintains proper cooling system pressure
- Easy installation and removal
- 100% tested to ensure proper pressure and longevity
- Meets all OEM specifications
Top-Rated Coolant Temperature Sensors for 2003 Lexus IS300s
Make a smart move for your 2003 Lexus IS300 with products all priced from $34.05 to $41.49.
Factory Air – Coolant Temp Sensor Switch (Part No.36424)
from
$34.05
High quality OE replacement part with all components needed to complete the job
Product Features:
See More
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
Delphi – Engine Coolant Temperature Sensor (Part No.TS10198)
from
$41.49
Delphi’s history is one of OE heritage and quality. Our global technical requirements include design specifications and validation testing based on over 100 years of OE experience. Our material selections, material thickness, and material types are built from OE specifications to exceed aftermarket expectations. We put in place strict manufacturing processes to ensure quality control in every part we make. Delphi’s pioneering spirit delivers innovative solutions designed to support the aftermarket in servicing the vehicles of today, and tomorrow.
Product Features:
See More
Product Features:
- Delphi temperature sensors deliver accurate readings and optimal performance
- Delphi’s one-piece design and automated production process eliminates internal connectors and failure points
- Each sensor is electrically insulated to eliminate interference from other components in the vehicle
- Delphi temperature sensors are impervious to electrical noise and interference
AISIN – TEMPERATURE SENSOR (Part No.THSAZ-8001)
from
$36.99
TEMPERATURE SENSOR
Top-Rated Engine Cooling Part Brands For Your 2003 Lexus IS300
When it comes to finding the perfect Engine Cooling Part for your 2003 Lexus IS300, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 9 trusted brands. We carry the most popular Engine Cooling Part brands including FELPRO, Carquest Premium, and Dorman, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $6.49. Purchasing a Engine Cooling Part from us here at Advance Auto Parts is a smart move for both you and your 2003 Lexus IS300, providing peace of mind with parts that meet or exceed OEM standards.
Popular FELPRO 2003 Lexus IS300 Engine Cooling Parts
If you’re looking for a top-quality Engine Cooling Part for your 2003 Lexus IS300, Advance Auto Parts has exactly what you need with our selection of FELPRO Engine Cooling Parts. We have 1 FELPRO Engine Cooling Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $6.49, you’ll find the perfect Engine Cooling Part for your needs and budget. FELPRO Engine Cooling Parts for the 2003 Lexus IS300 come highly rated, with over 76 customer reviews and an impressive average rating of 4.6 stars. Choosing a FELPRO Engine Cooling Part from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Top-Quality Carquest Premium 2003 Lexus IS300 Engine Cooling Parts
For those in search of a high-quality Engine Cooling Part for their 2003 Lexus IS300, Advance Auto Parts offers a great selection of Carquest Premium Engine Cooling Parts. With 3 Carquest Premium Engine Cooling Parts in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Engine Cooling Parts start at just $16.99, with an average price of $110.99, giving you a range of options to suit your budget. Backed by over 145 customer ratings and an average rating of 4.4 stars, Carquest Premium Engine Cooling Parts provide both reliability and excellent performance. Choosing a Carquest Premium Engine Cooling Part from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
FAQs for 2003 Lexus IS300 Engine Cooling Parts
What are the best-selling Engine Cooling Parts for 2003 Lexus IS300s?
Out of 20 Engine Cooling Parts that fit 2003 Lexus IS300s, the following parts are the top sellers:
- UltraStat Thermostat: 180 Degrees (11920544) – $28.99
- Multi-Purpose Relay (12459738) – $46.99
- Radiator Drain Cocks (17190405) – $7.99
What’s the price range for 2003 Lexus IS300 Engine Cooling Parts?
The prices of Engine Cooling Parts for the 2003 Lexus IS300 range from $1.49 up to $325.99 for the most premium parts.
What is the average price of an Engine Cooling Part for a 2003 Lexus IS300?
The average price for Engine Cooling Parts for the 2003 Lexus IS300 is $55.88. Keep in mind the variety of part types within our Engine Cooling Part category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Engine Cooling Parts for other Lexus IS300 model years?
What are the cheapest Engine Cooling Parts for my 2003 Lexus IS300?
The cheapest 2003 Lexus IS300 Engine Cooling Parts we carry are:
- THERMOSTAT SEAL (89016526) – $1.49
- Plastic Drain Cock Screw-In Type Screw-M14-2.0 (22972337) – $4.99
- Engine Coolant Thermostat Seal (5181607) – $6.49
- Radiator Drain Cocks (17190405) – $7.99
- Radiator Cap: 16 PSI (17110029) – $16.99
Does Advance Auto Parts sell Engine Cooling Parts for any other 2003 Lexus models?
Yes. We stock Engine Cooling Parts for 7 other popular 2003 Lexus models. Some of the most popular are 2003 ES300 Engine Cooling Parts, 2003 GS300 Engine Cooling Parts, 2003 RX300 Engine Cooling Parts, 2003 LS430 Engine Cooling Parts, and 2003 LX470 Engine Cooling Parts.
What are the top-rated Engine Cooling Parts that fit the 2003 Lexus IS300?
Based on 478 reviews by customers, our 2003 Lexus IS300 Engine Cooling Parts have an average customer rating of 4 stars. These are the highest-rated categories of Engine Cooling Parts for the 2003 Lexus IS300 and their top-rated products:
- Thermostats
- Standard Thermostat: 180 Degrees (15480023) – $17.29
- Thermostat and Water Outlet Gaskets
- Engine Coolant Thermostat Seal (5181607) – $6.49
What types of Engine Cooling Parts do you sell for my 2003 Lexus IS300?
As of 11/2/25, these are some of the most in-demand types of Engine Cooling Parts for a 2003 Lexus IS300:
Can I get help with 2003 Lexus IS300 Engine Cooling Part orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Lexus Engine Cooling Parts and more.
What is your return policy for Lexus IS300 Engine Cooling Parts?
Advance Auto Parts keeps returns simple. For new Lexus IS300 Engine Cooling Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.