2003 Lexus RX300 Engine Parts

Essential 2003 Lexus RX300 Engine Parts

Ishino – Oil Pump Seal, O-ring (Part No.A6160263434ISH)

Oil Pump Seal, O-ring

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$2.35
Oil Pump Seal, O-ring

Dayco – Timing Belt Kit; With Belt, Camshaft Belt Tensioner And Idler, 3 Piece Set (Part No.95257K1)

Timing Belt Kit; With Belt, Camshaft Belt Tensioner And Idler, 3 Piece Set

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$96.99
Demanded by today’s OEMs and manufactured to meet critical fit, form and function requirements, Dayco timing belt kits ensure parts accuracy, time savings and long-lasting performance. This kit is designed for the replacement of worn or damaged original equipment timing belts, tensioners and idler pulleys – each matched to a specific vehicle make and model.

Product Features:
  • Engineered for both domestic and import vehicle applications with a timing belt
  • All components needed for a complete timing belt replacement included in one box
  • Includes premium Dayco components and tough, wear-resistant belt
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Felpro – Engine Cylinder Head Bolt Set (Part No.ES 71036)

Engine Cylinder Head Bolt Set

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$47.99
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
  • Avoid risk associated with re-use of T-T-Y (torque to yield) head bolts
  • Validated for fit, form and function
  • Unsurpassed quality you can trust
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Carquest Premium – Crankshaft Sensor (Part No.CSC1168)

Crankshaft Sensor

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$57.99
A leader in vehicle electronic solutions, each premium product meets or exceeds OE specifications in appearance, fit, and function, ensuring easy installation and excellent performance. The product has been tested under extreme environments, including the

Product Features:
  • Reliable circuit board and product structure design, 3D proofing, and field test verification to ensure correct signal output at all speeds.
  • Manufactured in an anti-static environment to ensure reliability and stability.
  • Extreme temperature and salt spray tests simulate real-world vehicle conditions to ensure durability and reliability.
  • Providing this premium product line, we meet the service professionals needs with the highest quality product every time the part comes out of the box.
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GMB – Timing Belt Idler Bearing (Part No.A5300111993GMB)

Timing Belt Idler Bearing

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$35.35
GMB is one of the world’s largest designers and manufacturers of automotive service products. GMB offers OE quality water pumps, universal joints, tensioner idler bearings and chassis parts for most European, Asian and Domestic vehicles.
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AISIN – Timing Belt Kit With Water Pump (Part No.A5001328661ASC)

Timing Belt Kit With Water Pump

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$232.23
The AISIN Timing Belt Kit With Water Pump contains the timing belt, tensioner and deflection pulleys as well as a AISIN water pump. All AISIN components meet the strict original equipment requirements.

Product Features:
  • Original equipment quality
  • Enhanced reliability for engine and vehicle owner
  • Individual parts need not be ordered
  • AISIN Hydraulic Tensioner in select applications
  • AISIN Water Pump with gaskets. Water Pump with housing in select applications
  • OE matched Idler Bearing, and Tensioner Bearing (Koyo and NSK brands)
  • OE matched Timing Belt supplied by Mitsuboshi
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Mahle – Valve Guide (Part No.A3060194345MAH)

Valve Guide

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$6.18
Valve Guide

Felpro – Engine Valve Cover Gasket Set (Part No.VS 50588 R)

Engine Valve Cover Gasket Set

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$29.99
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:
  • DESIGNED FOR IMPERFECT SEALING SURFACES — Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
  • ENGINEERED TO PERFORM — Proprietary cork-rubber formulation
  • SUPERIOR SEAL — Highly conformable to accommodate for the imperfect sealing surfaces
  • EVERY PART FOR THE REPAIR — Fel-Pro gasket sets include every part needed for the repair unless otherwise noted
  • REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
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Dorman – Timing Cover Kits (Part No.635-136)

Timing Cover Kits

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$147.99
This direct replacement timing cover matches the fit and function of the original equipment cover for a reliable repair. This part has undergone extensive testing to ensure adherence to precise design standards..

Product Features:
  • Direct replacement – this engine timing cover matches the fit and function of the original equipment cover.
  • Durable construction – this part is specifically designed to withstand extreme underhood temperatures for a long service life
  • Cost-effective solution – offers original equipment quality at a competitive price
  • Quality tested – this part has undergone extensive testing to ensure a quality fit and long service life
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Felpro – CRANKSHAFT FRONT SEAL SET (Part No.TCS 45890)

CRANKSHAFT FRONT SEAL SET

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$9.29
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 for the sealing repair environment
  • Validated for fit, form and function
  • Unsurpassed quality you can trust
  • Includes all the parts necessary to complete the repair unless otherwise noted
  • Includes all the parts necessary to complete the repair unless otherwise noted
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Felpro – Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts (Part No.9592 PT)

Cylinder Head Gasket: Multi-Layered Steel, Without Head Bolts

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$73.99
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:
  • MULTI-LAYERED STEEL CONSTRUCTION – Multiple layers of stainless steel maintain sealing stress and accommodate head lift
  • DESIGNED FOR IMPERFECT SEALING SURFACES – Engineered and manufactured specifically for the repair environment to help seal imperfect sealing surfaces
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Mahle – Engine Coolant Thermostat Gasket (Part No.G403117595MAH)

Engine Coolant Thermostat Gasket

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$8.13
The Mahle Engine Coolant Thermostat Gasket is a high quality Original Equipment replacement that is manufactured to meet or exceed OE specifications for fit, form, and function.

Product Features:
  • Seals the thermostat housing and helps prevent coolant from leaking from the engine for proper engine temperature
  • Premium Original Equipment replacement
  • Provides performance and dependability
  • Manufactured to meet OE specifications
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Ishino Stone – Cylinder Head Gasket Set (Part No.A8010167040ISH)

Cylinder Head Gasket Set

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$357.11
WARNING: This item cannot be returned for a replacement or refund if opened! ISHINO STONE® – Corteco Ishino Corporation of Japan – has been manufacturing gaskets since 1932 and tier-1 OEM supplier to Toyota, Honda and other Japanese auto manufacturers. The Corteco Ishino solution is to supply gaskets featuring a combination of different metals with different elastomer layers, carefully adapted to complement each other and preserve the integrity of the seal.

Product Features:
  • Superb quality and precision manufacturing process to ensure overall sealing dependability
  • Static sealing solutions are guaranteed to supply strong sealing power to eliminate any leakage
  • Manufactured to exact OEM specifications
  • Most gasket sets include components needed for a complete overhaul
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Carquest Premium – Engine Camshaft Position Sensor Connector (Part No.PTA1149)

Engine Camshaft Position Sensor Connector

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$7.79
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.

Product Features:
  • Premium quality materials for longer service life
  • Sealed connections (where applicable) to prevent environmental corrosion and performance issues
  • Global coverage for import and/or domestic applications
  • OE specified wire gauge to ensure a reliable electrical connection
  • Designed to meet or exceed OE specifications in form, fit and function
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Driveworks – Camshaft Seal (Part No.S-99139)

Camshaft Seal

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$23.99
Product Features:
  • Brand may vary by location
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GMB – Timing Belt Idler Bearing (Part No.A5300111997GMB)

Timing Belt Idler Bearing

from

$52.73
GMB is one of the world’s largest designers and manufacturers of automotive service products. GMB offers OE quality water pumps, universal joints, tensioner idler bearings and chassis parts for most European, Asian and Domestic vehicles. This is a “up-date” Idler Bearing Also requires 1 of # 13556-62010 Idler Bearing Shaft
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Spartan – Engine Cylinder Head; Toyota 1MZFE RIGHT Cyl Head (Part No.2847AR)

Engine Cylinder Head; Toyota 1MZFE RIGHT Cyl Head

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$576.99
Remanufactured Cylinder Heads are complete rebuild & include new valve stem seals, soft plugs & verified camshafts. All threads are checked and repaired if necessary. Cylinder Heads are packaged in heavy plastic to protect the unit.

Product Features:
  • All cylinder heads are both vacuum and pressure tested to verify valve seating, & integrity of water passages.
  • All cylinder heads are packaged in environmentally safe and recyclable containers that are the perfect size for returning your original core
  • All threads and machined surfaces are and repaired with technology that exceeds the original metal
  • Non-sealing iron surfaces painted to prevent oxidization
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National – Shaft Repair Sleeve (Part No.99145)

Shaft Repair Sleeve

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$32.49
National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Designed to repair damaged, grooved or worn shafts
  • Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
  • Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
  • Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
  • Easy to install with removable flange and installation tool
  • Installation tool reduces sleeve distortion and allows for installation without removal from the shaft
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Dorman – Engine Mount Bracket (Part No.917-189)

Engine Mount Bracket

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$63.99
This engine mount bracket is precision-engineered and rigorously tested to provide reliable replacement for the original equipment on specific vehicles.

Product Features:
  • Direct replacement – fits and performs like the original equipment on specific vehicles
  • Reliable fit – precision-engineered to match the design and dimensions of original components
  • Durable construction – manufactured to strict standards using sturdy, safe materials
  • Rigorously tested – thorough quality control measures ensure longevity
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Anchor – Torque Strut Motor Mount: Right, 1 Piece (Part No.8995)

Torque Strut Motor Mount: Right, 1 Piece

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$50.99
The purpose of the mount is to support the engine and transmission on the chassis and dampen vibration and noise from reverberating to the rest of the vehicle. The Torque Strut prevents engine rocking. Each part is engineered and manufactured to meet or exceed OEM specifications using the latest CAD/CAM engineering process to ensure superior quality, form, fit and function. Only premium quality materials are used in the manufacturing process to guarantee precise performance and maximum durability. Applicable to LEXUS 99-03;. Please verify your application.

Product Features:
  • MAXIMUM LIFE & PERFORMANCE: Both natural and SBR (Styrene Butadiene) rubber provide good abrasion resistance and aging stability to ensure maximum life and performance.
  • MEETS OR EXCEEDS DUROMETER MEASUREMENTS: All rubber material is manufactured to specific Durometer (hardness) measurements based on the vehicle’s application requirements.
  • HARDENED STEEL FASTENERS: All fasteners are made of hardened steel with heat treated Grade #5 bolts.
  • SUPERIOR BOND: A special Chemlock® bonding agent is used to ensure a superior rubber-to-metal bond.
  • HYDRAULIC MOUNT DESIGN: Hydraulic Mounts (applicable where OE) are designed for most front wheel drive vehicles because transverse drive train mounting.
  • For Years: 1999-2003
  • Weight approx: 2 Lbs
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Crankshaft Rebuilders – Remanufactured Crankshaft Kit (Part No.32650)

Remanufactured Crankshaft Kit

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$279.99
Remanufactured precision machined OE crankshafts.

Product Features:
  • Includes matching rod and main bearings.
  • Journals Micropolished.
  • All units subject to complete quality inspection.
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Dorman – Engine Oil Pan: Direct Fit, Steel, Front Sump, 5 Quart (Part No.264-316)

Engine Oil Pan: Direct Fit, Steel, Front Sump, 5 Quart

from

$75.99
Oil pan leaking? This engine oil pan is precision-engineered to match the original equipment pan on specific vehicle years, makes and models for a reliable replacement.

Product Features:
  • Direct replacement – this engine oil pan is made to match the original pan on specific vehicles
  • Complete assembly – includes replacement pan and drain plugs to match original components
  • Durable design – high-strength coating prevents future corrosion
  • Trustworthy value – backed by team of engineers and quality control experts in the United States
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Felpro – VALVE STEM SEAL SET (Part No.SS 72878)

VALVE STEM SEAL SET

from

$51.99
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:
  • RIGHT TYPE — Valve stem seals designs are application-specific for the repair occasion using either deflector (umbrella) seals, O-ring style or positive seals
  • QUALITY MATERIALS — Each valve stem seal features materials based on the specific application for your vehicle repair
  • ENGINEERING EXPERTISE — Parts are reviewed, validated and approved by Fel-Pro engineers through rigorous research, development and testing
  • INSTALLATION AID — Installation tool included to protect inner lip of seal from damage during seal installation
  • COVERAGE — Available for domestic and foreign nameplate vehicles
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Nakamura – Nakamura Intake Valve (Part No.A4060138491NKM)

Nakamura Intake Valve

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$4.22
Nakamura manufactures intake and exhaust valves in forged and hot-extruded versions in a multitude of materials that meet or exceed OE specifications.

Product Features:
  • OE Quality
  • Heat and corrosion resistant
  • Chromium plated or nitrided
  • Stem optimized to resist wear
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Dayco – Premium Timing Belt, 66.46 Inch With 211 Round Tooth (Part No.95257)

Premium Timing Belt, 66.46 Inch With 211 Round Tooth

from

$41.99
Manufactured with tough, wear-resistant fabric, high-tensile strength cord and a molded tooth surface, the Dayco timing belt provides consistent slip-proof power transfer and high resistance to oil and engine heat. The belt features a molded cog design which runs quieter and is more economical and a premium, high modulus glass fiber cord that delivers precise length stability to keep the engine running smoothly over the life of the belt.

Product Features:
  • Designed for specific OHC and DOHC applications that range from normal service to high performance, high temperature engines
  • Offers noise reduction and minimum dimensional tolerances for precise valve timing
  • Engineered with reduced elongation for maximum durability, high abrasion resistance and better performance
  • Timing marks are applied on the belt for proper installation
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Bando – Timing Belt (Part No.A5000131028BAN)

Timing Belt

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$84.59
The Bando Timing Belt is designed and built to provide positive no slip durable long life performance. The Bando timing belt has precision molded teeth that are protected by durable fabric and utilizes a non stretchable tensile cord that is engineered for maximum load carrying capabilities.

Product Features:
  • OE-Equivalent and a direct fit application.
  • Precision molded teeth.
  • Resistant to abrasion and heat.
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Carquest Premium – Engine Oil Filler Cap: 10121, Push Fit, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10121)

Engine Oil Filler Cap: 10121, Push Fit, Direct Fit, Provides Tight Seal, 1 Pack

from

$6.49
Manufactured from high quality components by an OE Supplier. Proper fit and sealing prevents oil loss. Designed to OEM specifications. High quality finish is designed to compliment the engine compartment appearance.

Product Features:
  • Provides proper seal to ensure leak prevention
  • Stops engine blow by
  • High quality construction
  • Meets all OEM specifications
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2003 Lexus RX300 Engine Parts

You count on your 2003 Lexus RX300 to run right. That means taking care of it with regular maintenance, necessary repairs, and the right parts. Advance Auto Parts can help with all of that thanks to our extensive inventory of trusted Engine Parts. With 103 Engine Parts ranging in price from $2.06 to $3,424.99, you’re sure to find everything you need for your 2003 Lexus RX300.

Brands matter. If you want to shop a specific Engine Parts brand, we stock 34 different brands like Felpro, Carquest Premium, and Dayco. 2003 Lexus RX300 Engine Parts start as low as $2.06!

One of the best ways to find top quality OEM or aftermarket Engine Parts is by asking professionals. Short of that, you can shop with confidence thanks to our 1,293 extensive product reviews on 2003 Lexus RX300 Engine Parts. Some of the top-rated Engine Parts products we carry are Timing Water Pump Kit; With Pump, Belt, Actuator, Tensioner And Idler with 4.5 stars and Variable Valve Timing Solenoid with 4.8 stars.

Did we mention you can order your Engine Parts from our online catalog and have them shipped right to your garage? Or, if you feel like seeing the parts first-hand, search for your nearest Advance Auto Parts location above and pick up in-store when you’re ready. Browse our full Engine Parts inventory for your 2003 Lexus RX300 below to get started!

Top-Rated Engine Parts Brands For Your 2003 Lexus RX300

Trusted Engine Parts OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2003 Lexus RX300 running right for years to come. In our inventory you’ll find brands like Felpro, Carquest Premium, Dayco, and even more.

Popular Carquest Engine Parts

You’ll find popular Carquest brand products across Engine Timing Parts. All are waiting to get your 2003 Lexus RX300 back on the road. Some of the top-rated Carquest products in these categories are:
Engine Variable Valve Timing (VVT) Solenoid
from $64.05
(2)
Engine Variable Valve Timing (VVT) Solenoid
Engine Variable Timing Solenoids
Engine Variable Valve Timing (VVT) Solenoid
from $67.05
(2)
Engine Variable Valve Timing (VVT) Solenoid
Engine Variable Timing Solenoids

Top-Rated Engine Parts


If are what you’re looking for, our inventory holds plenty. We stock brand Engine Parts for your 2003 Lexus RX300, and some of our most reviewed parts include:
Engine Long Block; Toyota 1MZFE Engine
from $3424.99
(1144)
Engine Long Block; Toyota 1MZFE Engine
Remanufactured Engines

FAQs for 2003 Lexus RX300 Engine Parts

What are the most purchased Engine Parts for the 2003 Lexus RX300?

Out of 103 Engine Parts for the 2003 Lexus RX300, the most popular in our inventory are:
Engine Valve Cover Gasket Set
from $29.99
(47)
Engine Valve Cover Gasket Set
Valve Cover Gaskets
UPPER INTAKE MANIFOLD GASKET/ PLENUM GASKET
from $13.99
(8)
UPPER INTAKE MANIFOLD GASKET/ PLENUM GASKET
Plenum Gasket Sets
Camshaft Sensor
from $22.99
This product is not rated
Camshaft Sensor
Camshaft Position Sensors

What are the top-rated 2003 Lexus RX300 Engine Parts?

Top-rated Engine Parts for your 2003 Lexus RX300 based on customer reviews/ratings are:
Timing Water Pump Kit; With Pump, Belt, Actuator, Tensioner And Idler
from $197.99
(15)
Timing Water Pump Kit; With Pump, Belt, Actuator, Tensioner And Idler
“All the parts fit perfectly, looks to be a quality product.”
Variable Valve Timing Solenoid
from $66.99
(12)
Variable Valve Timing Solenoid
“Advance Auto Parts always has the parts I need in stock.”
Premium Timing Belt, 66.46 Inch With 211 Round Tooth
from $41.99
(12)
Premium Timing Belt, 66.46 Inch With 211 Round Tooth
“Great item”