2003 Toyota Highlander Fuel and Emissions Systems

Essential 2003 Toyota Highlander Fuel and Emissions Systems

Carquest Premium – Fuel Cap: 10825, Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10825)

Fuel Cap: 10825, Screw On, Direct Fit, Provides Tight Seal, 1 Pack

from

$14.99
Manufactured with OEM quality materials and safety standards by an OE Supplier. Manufactured to pass all state and federal emissions requirements. Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel. A leaking fuel cap can allow up to 30 gallons of gasoline to evaporate over the period of a year.

Product Features:
  • Passes all state and federal emissions tests
  • Manufactured from durable, long-life materials
  • Reduces air pollution with proper sealing and venting
  • Independently tested for emission control
See More

Mark Automotive – Fuel Tank Cap Seal (Part No.E206089586MAM)

Fuel Tank Cap Seal

from

$24.84
Fuel Tank Cap Seal

Felpro – Fuel Injection Throttle Body Mounting Gasket (Part No.61091)

Fuel Injection Throttle Body Mounting Gasket

from

$6.79
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
See More

Dorman – Help – Gasket For Oxygen Sensor (Part No.47021)

Gasket For Oxygen Sensor

from

$12.29
This oxygen sensor gasket is designed to match the fit and function of the original gasket on specified vehicles, and is engineered for durability and reliable performance.

Product Features:
  • Direct replacement – this oxygen sensor gasket is designed to match the fit and function of the original gasket on specified vehicles
  • Restores functionality – this gasket is made to fit and fully restore part functionality after the original gasket fails
  • 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
See More

Wells Vehicle Electronics – Fuel Injection Pressure Regulator (Part No.5G1421)

Fuel Injection Pressure Regulator

from

$71.99
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.
See More

Carquest – Fuel Injector Seal Kit (Part No.274712)

Fuel Injector Seal Kit

from

$5.99
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
  • State-of-the-art designs that meet or exceed OE specifications
  • Top-of-the-line quality and performance
  • With industry leading expertise, when original equipment fails our products are designed to fix the inherent failure issues
  • BWD is a global manufacturer of original equipment and aftermarket fuel injection products, complete quality control is maintained through the manufacturing process from componentry to finished product
See More

Aisan – Electric Fuel Pump (Part No.E3000382531AIS)

Electric Fuel Pump

from

$160.21
The Aisan Electric Fuel Pump meets or exceeds the OE specifications for fit, durability and performance.

Product Features:
  • OE-Equivalent electric fuel pump.
  • Direct fit for easy installation.
  • OE connections and fittings.
  • Highly efficient turbine design.
  • Designed for quieter operation.
See More

Wells Vehicle Electronics – Fuel Injection Pressure Damper (Part No.3G1049)

Fuel Injection Pressure Damper

from

$111.99
WVE is a leading source of advanced vehicle electronics components for replacement applications in the automotive aftermarket and original equipment applications. WVE offers high-technology manufacturing along with innovative solutions and improvements to
See More

Delphi – Fuel Tank Cleaning Kit (Part No.FC01)

Fuel Tank Cleaning Kit

from

$12.49
To perform a complete fuel pump replacement, clean the tank every time. Order the Delphi Fuel Tank Cleaning Kit (Part FC01). Remember, the original pump went into a clean fuel tank, to ensure the same level of performance, the new pump should too. 100 ye

Product Features:
  • Helps avoid premature fuel pump failure
  • Lint free towel included
  • Low suds formulation
  • Removes harmful contaminants from the fuel tank
See More

Felpro – Fuel Injection Idle Air Control Valve Gasket (Part No.61084)

Fuel Injection Idle Air Control Valve Gasket

from

$3.29
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 and manufactured specifically for the repair environment
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
See More

Delphi – Fuel Pump Strainer (Part No.FS0179)

Fuel Pump Strainer

from

$17.99
100 years of OE experience, supplier to the world’s top automakers, OE Heritage and knowledge built into every aftermarket part, comprehensive portfolio for a wide range of vehicles and model years.

Product Features:
  • Filtration performance and micron rating meet or exceed OE requirements
  • OE replacement strainer designed for use with Delphi electric fuel pumps
  • Replacing the strainer is always recommended when replacing a fuel pump
See More

DENSO – Manifold Absolute Pressure Sensor (Part No.198-1002)

Manifold Absolute Pressure Sensor

from

$329.99
DENSO’s MAP sensors offer leading edge sensing technology which helps controls fuel injection more precisely. They are compact lightweight and designed with fewer connections improving performance and reliability. DENSO’s MAP sensors have high detection accuracy which reduces emissions.

Product Features:
  • OE technology adapted for the aftermarket
  • Reduces emissions, increased performance
  • Delivers the highest reliability and detection accuracy
See More

Aisan – Fuel Cut Off Valve (Part No.E2015177515AIS)

Fuel Cut Off Valve

from

$8.61
Fuel Cut Off Valve

Carquest Premium – Remanufactured Fuel Injector (Part No.A212-2434)

Remanufactured Fuel Injector

from

$48.49
CARQUEST’S line of remanufactured OEM fuel injectors are remanufactured using a proven 15 step process at a state-of-the-art remanufacturing facility in the U.S.A. Each injector is 100% tested under multiple operating conditions to ensure each injector meets or exceeds OE specifications for flow rate, spray pattern, coil resistance, form, fit and function. Each injector includes new external seals and O-rings.

Product Features:
  • Each unit is 100% tested to OE specifications
  • Includes new O-rings and seals made of premium OE quality materials
  • Includes application specific technical bulletin, where applicable
See More

Carquest Premium – Mass Air Flow Sensor (MAF) – 100% NEW (Part No.MQ6203)

Mass Air Flow Sensor (MAF) - 100% NEW

from

$92.99
Advance Auto Parts is proud to carry all new mass air flow sensors that use high-quality components with the highest quality standards.

Product Features:
  • CARQUEST MAF use all new high-quality components at the highest quality standards.
  • Manufactured with new and advanced technology to perform, fit and function at OE specifications.
  • All new product that is tested with OEM equipment to OEM standards
  • Outperforms competition when tested in extreme environmental conditions
See More

Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1121)

Ambient Air Temperature Sensor

from

$43.99
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.
See More

Carquest – A/C Compressor Control Relay (Part No.R4741)

A/C Compressor Control Relay

from

$55.05
The Intermotor brand has built its reputation by engineering and distributing a full line of genuine import parts – parts that are unrivaled for quality, original look, fit, form & function, as well as coverage.

Product Features:
  • Premium components and our own manufactured circuit board ensure precise operation, reliability, and extra durability for a longer service life
  • Our electronic voltage regulator PC boards are encapsulated in epoxy to deliver improved performance and resistance to failure that may be caused by vibration and corrosion of electrical connections
  • All parts are manufactured to stringent quality requirements. Our plants are TS16949 and ISO9001 certified which ensures that every part is the right part for the right vehicle.
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
See More

DENSO – Wideband Oxygen Sensor: Upstream, 4 Wire, 13.46" Long, Heated, Exact Fit (Part No.234-9155)

Wideband Oxygen Sensor: Upstream, 4 Wire, 13.46" Long, Heated, Exact Fit

from

$199.99
DENSO Air/Fuel Ratio Sensors are manufactured and tested to the strictest OE standards for unparalleled performance. Each component is precision-built for exact replacement and a first time fit. DENSO gives you the right part and the right fit the first t

Product Features:
  • Specifically designed to meet the increasing demands of today’s engines
  • 100% checked for high temperature signal output, air tightness, continuity, and heat resistance for optimal efficiency and performance
  • Coated with aluminum oxide to prevent silicone and lead from contacting the ceramic element and damaging the platinum electrode
  • Double protection cover helps maintain proper unit temperature for quicker response times, which is critical to your vehicle’s fuel efficiency
  • Manufactured with a rugged stainless steel housing and porous PTFE filter to resist corrosion and contamination
See More

Carquest Premium – Exhaust Gas Recirculation (EGR) Valve Gasket (Part No.EGA2615)

Exhaust Gas Recirculation (EGR) Valve Gasket

from

$18.79
Exhaust Gas Recirculation (EGR) Valve Gasket

MAHLE Original – Injector O-Rings (Part No.GS33654)

Injector O-Rings

from

$7.49
MAHLE gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

Product Features:
  • All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
  • MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
  • MAHLE gaskets is the leader in Domestic, Asian and European applications
  • The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package
See More

Victor Reinz – Fuel Injector O-Ring Kit (Part No.15-11974-01)

Fuel Injector O-Ring Kit

from

$7.99
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

Product Features:
  • Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
See More

Carquest Premium – Fuel Cap Tester Adapter (Part No.12422)

Fuel Cap Tester Adapter

from

$39.99
Fuel Cap Tester Adaper for use with Stant fuel cap testers. Color coded for easy identification. Made of durable plastic.

Product Features:
  • BAR Certified adapters
  • Adapter check’s a fuel cap’s ability to hold pressure.
  • Adapters meet EPA standards for recommended fleet coverage.
  • Check adapter application chart for specific makes and models
See More

Carquest – HVAC Blower Motor Relay (Part No.R3137)

HVAC Blower Motor Relay

from

$26.05
The Intermotor brand has built its reputation by engineering and distributing a full line of genuine import parts – parts that are unrivaled for quality, original look, fit, form & function, as well as coverage.

Product Features:
  • Points feature one-piece nylon breaker arms where specified providing longer tune-up life
  • Featuring brass or copper contacts where specified for extended wear
  • All parts are manufactured to stringent quality requirements. Our plants are TS16949 and ISO9001 certified which ensures that every part is the right part for the right vehicle.
  • BWD is a global manufacturer of original equipment ignition products, complete quality control is maintained through the manufacturing process from componentry to finished product
See More

Aisan – Carbon Canister (Part No.B7070770363AIS)

Carbon Canister

from

$351.89
Carbon Canister

Ishino Stone – Fuel Inject Cushion (Part No.C1011144709ISH)

Fuel Inject Cushion

from

$3.55
Fuel Inject Cushion

Carquest Premium – Idle Air Control Valve (Part No.AEA1058)

Idle Air Control Valve

from

$226.99
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.
See More

DENSO – Oxygen Sensor: Downstream, 4 Wire, 19.69" Long, Heated, Exact Fit (Part No.234-4215)

Oxygen Sensor: Downstream, 4 Wire, 19.69" Long, Heated, Exact Fit

from

$108.99
DENSO Oxygen Sensors are manufactured and tested to the strictest OE standards for unparalleled peformance; Each component is precision built for exact replacement, and a first time fit; This innovative line features DENSO’s exclusive aluminum oxide trap layer, designed to protect the ceramic element from silicone and lead posining for improved engine performance, greater fuel efficiency, and unparalleled longevity; DENSO gives you the right part and the right fit, the first time.

Product Features:
  • Specifically designed to meet the increasing demands of today’s engines
  • 100% checked for high temperature signal output, air tightness, continuity, and heat resistance for optimal efficiency and performance
  • Coated with aluminum oxide to prevent silicone and lead from contacting the ceramic element and damaging the platinum electrode
  • Double protection cover helps maintain proper unit temperature for quicker response times, which is critical to your vehicle’s fuel efficiency
  • Manufactured with a rugged stainless steel housing and porous PTFE filter to resist corrosion and contamination
See More

Bosch – Oxygen Sensor: 4 Wire, 31.1" Long, Heated, Exact Fit (Part No.15986)

Oxygen Sensor: 4 Wire, 31.1" Long, Heated, Exact Fit

from

$119.99
Bosch is the world’s leading supplier and original equipment manufacturer of Oxygen Sensors. Bosch invented the automotive oxygen sensor and leads the way in sensor technology and innovation advancements. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.  Bosch oxygen sensors deliver exceptional OE level reliability, performance and durability, further improving service life of the product. 

Product Features:
  • Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
  • Direct Fit includes OE Connector for easy installation
  • Performance meets or exceeds OE specifications
  • True Direct-fit OE connectors and harness
See More

2003 Toyota Highlander Fuel and Emissions Systems

You count on your 2003 Toyota Highlander 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 Fuel and Emissions Systems. With 94 Fuel and Emissions Systems ranging in price from $1.86 to $819.99, you’re sure to find everything you need for your 2003 Toyota Highlander.

Brands matter. If you want to shop a specific Fuel and Emissions Systems brand, we stock 21 different brands like Carquest Premium, Bosch, and DENSO. 2003 Toyota Highlander Fuel and Emissions Systems start as low as $1.86!

One of the best ways to find top quality OEM or aftermarket Fuel and Emissions Systems is by asking professionals. Short of that, you can shop with confidence thanks to our 2,667 extensive product reviews on 2003 Toyota Highlander Fuel and Emissions Systems. Some of the top-rated Fuel and Emissions Systems products we carry are Fuel Cap: 10834, Screw On, Direct Fit, Provides Tight Seal, 1 Pack with 4.3 stars and Gas Cap: Twist On, Reduces Air Pollution, 1 Pack with 4.6 stars.

Did we mention you can order your Fuel and Emissions Systems 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 Fuel and Emissions Systems inventory for your 2003 Toyota Highlander below to get started!

Top-Rated Fuel and Emissions Systems Brands For Your 2003 Toyota Highlander

Trusted Fuel and Emissions Systems OEM and aftermarket product brands are what Advance Auto Parts specializes in. The brands we work with are sure to keep that 2003 Toyota Highlander running right for years to come. In our inventory you’ll find brands like Carquest Premium, Bosch, DENSO, and even more.

Popular Delphi Fuel and Emissions Systems

You’ll find popular Delphi brand products across Fuel Pumps. All are waiting to get your 2003 Toyota Highlander back on the road. Some of the top-rated Delphi products in these categories are:
Fuel Pump Strainer
from $17.99
(1)
Fuel Pump Strainer
Electric Pump Filter and Strainers

Top-Rated DENSO Fuel and Emissions Systems


If DENSO are what you’re looking for, our inventory holds plenty. We stock DENSO brand Fuel and Emissions Systems for your 2003 Toyota Highlander, and some of our most reviewed DENSO parts include:
Oxygen Sensor: 4 Wire, 31.10" Long, Heated, Exact Fit
from $118.99
(332)
Oxygen Sensor: 4 Wire, 31.10" Long, Heated, Exact Fit
Oxygen Sensors

FAQs for 2003 Toyota Highlander Fuel and Emissions Systems

What are the most purchased Fuel and Emissions Systems for the 2003 Toyota Highlander?

Out of 94 Fuel and Emissions Systems for the 2003 Toyota Highlander, the most popular in our inventory are:

What are the top-rated 2003 Toyota Highlander Fuel and Emissions Systems?

Top-rated Fuel and Emissions Systems for your 2003 Toyota Highlander based on customer reviews/ratings are:
Gas Cap: Twist On, Reduces Air Pollution, 1 Pack
from $15.79
(63)
Gas Cap: Twist On, Reduces Air Pollution, 1 Pack
“All was good”