2003 Toyota 4Runner Fuel and Emissions Systems

Essential 2003 Toyota 4Runner Fuel and Emissions Systems

Carquest – Fuel Injector (Part No.63792)

Fuel Injector

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$144.05
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
  • Precision-wound and precision-trimmed solenoid windings allow the computer to command efficient delivery of fuel
  • High-temp Viton® O-rings enable prolonged sealing of injector under extreme heat conditions
  • Fiber-optic yttrium aluminum garnet “YAG” laser welding and 100 million cycle testing ensure quality in every box
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Carquest Premium – Fuel Tank Pressure Sensor (Part No.ECA1486)

Fuel Tank Pressure Sensor

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$223.99
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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Carquest Premium – Fuel Cap Tester Adapter (Part No.12422)

Fuel Cap Tester Adapter

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$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
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Carquest Premium – Vapor Canister Purge Solenoid (Part No.EGC1241)

Vapor Canister Purge Solenoid

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$99.99
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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Delphi – Fuel Tank Cleaning Kit (Part No.FC01)

Fuel Tank Cleaning Kit

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$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
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Spectra Premium – Fuel Filler Neck (Part No.FN607)

Fuel Filler Neck

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$135.99
Innovative engineering, manufacturing technology and quality control ensure that Spectra Premium fuel tank filler necks meet or exceed the performance of the original equipment they replace.

Product Features:
  • Unit is designed to OE fit, form and function requirements accomplished by leveraging our OE fuel system design expertise
  • Unit is dual coated for enhanced corrosion protection
  • Fit tested on the very same vehicle application for which it was developed verifying first-hand that the design fits properly and can be easily installed
  • Unit is leak tested after production to ensure product in free from fuel and / or evaporative leaks
  • Tested with OE fuel cap to prevent evaporative emission and check engine light failure
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DENSO – First Time Fit Air Fuel Ratio Sensor (Part No.C5015305035ND)

First Time Fit Air Fuel Ratio Sensor

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$254.99
DENSO a global supplier to automakers manufactures an OE-equivalent direct fit air fuel ratio sensor that maintains the quality and performance of the Original Equipment it replaces. DENSO continues to innovate with the latest development in air fuel ratio sensors. These components, also known as wide-band oxygen sensors, have a broader response range to provide much finer control of air/fuel mixtures over a greater variety of operating conditions.

Product Features:
  • Tarnish-proof platinum electrodes provides longer life and maintains accuracy
  • Quick-response planar zirconia element can quickly detect oxygen concentration
  • Measures A/F ratios from approximately 12:1 to 19:1
  • Increased performance by mapping a/f ratios throughout rpm range
  • Reduces emissions by keeping the air-fuel mixture at an optimum ratio
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Delphi – Fuel Pump Strainer (Part No.FS0063)

Fuel Pump Strainer

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$31.99
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
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NTK – Switching Oxygen Sensor: 4 Wire, 16.25" Long, Heated, Direct Fit (Part No.24554)

Switching Oxygen Sensor: 4 Wire, 16.25" Long, Heated, Direct Fit

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$89.99
NTK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. Providing constant closed loop feedback to the ECU, oxygen sensors help to control the air-fuel ratio while alerting OBDII systems of possible problems with fuel delivery or catalytic converter efficiency. A ceramics company at our core, NTK uses state-of-the art technology enabling control of the ceramic element used in our oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.

Product Features:
  • OEM QUALITY: NTK is the world’s largest supplier of original equipment oxygen sensors with renowned quality that meets or exceeds OEM specifications
  • PRODUCT ENGINEERING: Based on OE expertise, but specifically engineered for the aftermarket, NTK Oxygen Sensors offer superior OE fit, form, function
  • OE TECHNOLOGY: Upgraded to the latest OE technologies, NTK Oxygen Sensors are designed to reduce OE failures, enhance durability and performance
  • EXTENSIVE TESTING: OE development includes vibration and thermal shock testing. Testing during manufacturing guarantees quality and reliability
  • EASY INSTALLATION: NTK Oxygen Sensors are equipped with OE specified, water-resistant connectors and harness accessory hardware for easy installation
  • ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning
  • NTK ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability
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Ishino – Fuel Inject Cushion Ring (Part No.C1011144330ISH)

Fuel Inject Cushion Ring

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$5.06
Fuel Inject Cushion Ring

Ishino – Fuel Inject Cushion Ring, Grommet (Part No.C1011189045ISH)

Fuel Inject Cushion Ring, Grommet

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$2.20
Fuel Inject Cushion Ring, Grommet

Carquest Premium – Fuel Tank Pressure Sensor (Part No.ECA1323)

Fuel Tank Pressure Sensor

from

$199.99
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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DENSO – First Time Fit Relay (Part No.P2020310465ND)

First Time Fit Relay

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$29.18
An electrical relay is sort of a magical device: it takes a small electrical signal and uses it to manage a much more powerful current, permitting electrical systems to be both lighter and more dependable at the same time. DENSO has supplied quality relays to the OE automotive world for over 60 years. The very same performance and dependability are available across the replacement aftermarket with DENSO First Time Fit® relays. Engineered to meet the most stringent automaker standards for shock resistance, arcing, and thermal protection, DENSO auto relays feature the lowest return rates in the industry; that equals value for car owners and repair facilities alike

Product Features:
  • Lead-free, solderless construction prevents heat shock and arcing
  • Controlled contact force, self-adjusting air gap increase longevity of the internal parts
  • Industry-standard packaging and footprint
  • Low heat generation
  • Reduced electrical loads
  • Built to last
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Wells Vehicle Electronics – Fuel Injection Pressure Damper (Part No.3G1067)

Fuel Injection Pressure Damper

from

$89.99
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 – Fuel Injector O-Ring Kit (Part No.ES 71859)

Fuel Injector O-Ring Kit

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$4.79
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 for the sealing repair environment
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
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Nippon Reinz – Fuel Injector O-Ring (Part No.C1012262175NRZ)

Fuel Injector O-Ring

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$1.48
NIPPON REINZ engineers work with OEMs to develop complete engine sealing solutions for gasoline, diesel, and alternative energy vehicles. We employ custom sealing solutions through our expert problem solving utilizing our regional research and development centers. As an Integral Partner with Virtually Every major vehicle and engine manufacturer worldwide, NIPPON REINZ offers a comprehensive range of sealing Innovative Systems, INCLUDING Head gaskets, Heat shields, sealing modules, secondary gaskets, Valve stem Seals, and transmission components.
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Carquest Premium – Vapor Canister (Part No.CPN2294)

Vapor Canister

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$905.99
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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DENSO – First Time Fit Electric Fuel Pump (Part No.E3000130627ND)

First Time Fit Electric Fuel Pump

from

$172.50
The Denso Electric Fuel Pump is built to meet the stringent requirements of carmakers for high output, extended reliability and reduced noise.

Product Features:
  • OE-Equivalent and direct fit for easy installation.
  • OE connections and fittings.
  • The high output turbine delivers fuel with minimal pressure pulsation for quieter operation.
  • Ultra-high balanced armature to minimize noise and vibration.
  • High pressure check valve provides superior hot fuel handling characteristics.
  • The brushes are designed for durability, efficiency, and low-resistance operation.
  • High quality relief valve to protect the fuel delivery system.
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Delphi – Fuel Injection Pressure Regulator (Part No.FP10519)

Fuel Injection Pressure Regulator

from

$143.99
100 years of OE experience, supplier to the world’s top automakers, OE Heritage and knowledge built into every aftermarket part.

Product Features:
  • Precisely manufactured internal valves, diaphragms and springs means excellent performance under all engine operating conditions
  • Quiet operation, no audible regulator noise
  • Robust diaphragm materials means longer life, improved durability and compatibility with a wide range of fuels
  • Consistent and predictable fuel pressure throughout system range of control provides great drivability
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Delphi – Mass Air Flow Sensor (Part No.AF10205)

Mass Air Flow Sensor

from

$124.99
100% new; Delphi OE Technology Validated to match the vehicle applications; Manufactured to meet or exceed OE requirements

Product Features:
  • Delphi mass air flow sensors are the global benchmark for accuracy and signal noise
  • Delphi mass air flow sensors feature high quality sensing elements for outstanding performance over a wide range of ambient temperatures
  • Delphi is a manufacturer of OE mass air flow sensors since their first use over 30 years ago
  • All parts are calibrated and tested to match the OE part
  • Probe solution offered wherever possible to reduce repair time by eliminating the need to replace the flow tube.
  • Delphi OE technology validated to match the vehicle applications
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Carquest Premium – Fuel Cap: 10839, Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10839)

Fuel Cap: 10839, Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack

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$20.79
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
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Carquest Premium – Locking Fuel Cap: 10504, Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10504)

Locking Fuel Cap: 10504, Screw On, Direct Fit, Provides Tight Seal, 1 Pack

from

$21.79
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:
  • Protects your fuel from theft and vandalism
  • 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
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Felpro – UPPER INTAKE MANIFOLD GASKET/ PLENUM GASKET (Part No.MS 97236)

UPPER INTAKE MANIFOLD GASKET/ PLENUM GASKET

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$22.99
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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Victor Reinz – Fuel Injection Throttle Body Mounting Gasket (Part No.71-13400-00)

Fuel Injection Throttle Body Mounting Gasket

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$3.29
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.
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Dorman – Fuel Tank Straps Set (Part No.578-316)

Fuel Tank Straps Set

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$86.99
Recommended for replacement whenever the fuel tank is replaced or serviced, this strap is a direct replacement for the original. Manufactured from durable materials to withstand harsh road and weather conditions.

Product Features:
  • Direct replacement – this fuel tank strap matches the fit, function and performance of the original part
  • Ideal solution – recommended for replacement when the fuel tank is serviced or replaced
  • Durable construction – manufactured from quality materials for superior service and reliability
  • Trustworthy design – backed by 100 years of automotive aftermarket experience
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Spectra Premium – Fuel Tank Strap (Part No.ST316)

Fuel Tank Strap

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$122.99
Innovative engineering, manufacturing technology and quality control ensure that Spectra Premium fuel tank straps meet or exceed the performance of the original equipment they replace.

Product Features:
  • Unit is designed to OE fit, form and function requirements accomplished by leveraging our expertise
  • Direct fit ensures safe, secure fuel tank installation
  • Product individually packaged and labeled to help reduce product damage prior to installation
  • Industry leading coverage on straps for plastic tanks
  • Manufactured with double-layered steel on the mounting brackets for a more robust solution
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Dorman – Evaporative Emissions Purge Solenoid Valve (Part No.911-675)

Evaporative Emissions Purge Solenoid Valve

from

$135.99
Engineered for a perfect fit and plug-and-play installation, this vapor canister purge valve is a direct replacement for the original equipment purge valve. It is critical to the evaporative emissions system and fulfills government requirements.

Product Features:
  • Direct replacement – this vapor canister purge valve fits and functions like original equipment to ensure proper function of your vehicle’s evaporative emissions system
  • Quality construction – manufactured from premium materials for a long service life
  • Excellent value – original equipment quality at a lower price
  • Quality tested – has undergone testing to ensure proper fit and performance
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Dorman – Evaporative Emissions Purge Solenoid Valve (Part No.994-016)

Evaporative Emissions Purge Solenoid Valve

from

$111.99
Engineered for a perfect fit and plug-and-play installation, this vapor canister purge valve is a direct replacement for the original equipment purge valve. It is critical to the evaporative emissions system and fulfills government requirements.

Product Features:
  • Direct replacement – this vapor canister purge valve fits and functions like original equipment to ensure proper function of your vehicle’s evaporative emissions system
  • Quality construction – manufactured from premium materials for a long service life
  • Excellent value – original equipment quality at a lower price
  • Quality tested – has undergone testing to ensure proper fit and performance
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2003 Toyota 4Runner Fuel and Emissions Systems

You count on your 2003 Toyota 4Runner 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 88 Fuel and Emissions Systems ranging in price from $1.74 to $602.99, you’re sure to find everything you need for your 2003 Toyota 4Runner.

Brands matter. If you want to shop a specific Fuel and Emissions Systems brand, we stock 22 different brands like Carquest Premium, Bosch, and DENSO. 2003 Toyota 4Runner Fuel and Emissions Systems start as low as $1.74!

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 3,483 extensive product reviews on 2003 Toyota 4Runner Fuel and Emissions Systems. Some of the top-rated Fuel and Emissions Systems products we carry are Mass Air Flow Sensor with 4.6 stars and Bosch Oxygen Sensor with 3.8 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 4Runner below to get started!

Top-Rated Fuel and Emissions Systems Brands For Your 2003 Toyota 4Runner

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 4Runner running right for years to come. In our inventory you’ll find brands like Carquest Premium, Bosch, DENSO, and even more.

Popular Felpro Fuel and Emissions Systems

You’ll find popular Felpro brand products across Fuel Injectors. All are waiting to get your 2003 Toyota 4Runner back on the road. Some of the top-rated Felpro products in these categories are:
UPPER INTAKE MANIFOLD GASKET/ PLENUM GASKET
from $12.99
(1)
UPPER INTAKE MANIFOLD GASKET/ PLENUM GASKET
Fuel Injector Gaskets
Fuel Injection Throttle Body Mounting Gasket
from $22.99
(1)
Fuel Injection Throttle Body Mounting Gasket
Fuel Injector Gaskets
Fuel Injection Plenum Gasket Set
from $28.49
(1)
Fuel Injection Plenum Gasket Set
Fuel Injector Gaskets

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 4Runner, and some of our most reviewed DENSO parts include:

FAQs for 2003 Toyota 4Runner Fuel and Emissions Systems

What are the most purchased Fuel and Emissions Systems for the 2003 Toyota 4Runner?

Out of 88 Fuel and Emissions Systems for the 2003 Toyota 4Runner, the most popular in our inventory are:
Mass Air Flow Sensor (MAF) - 100% NEW
from $92.99
(6)
Mass Air Flow Sensor (MAF) – 100% NEW
Air Flow Meters and Mass Air

What are the top-rated 2003 Toyota 4Runner Fuel and Emissions Systems?

Top-rated Fuel and Emissions Systems for your 2003 Toyota 4Runner based on customer reviews/ratings are:
Mass Air Flow Sensor
from $69.99
(16)
Mass Air Flow Sensor
“It was easy to shop and couldn’t beat the price offered”
Bosch Oxygen Sensor
from $113.82
(15)
Bosch Oxygen Sensor
“I had the check engine light on my dash and diagnosed it as code p0155 and sensor bank2 sensor1 defective. Used this part to fix the issue. now it h”
Oxygen Sensor: 4 Wire, 14.57" Long, Heated, Exact Fit
from $105.99
(15)
Oxygen Sensor: 4 Wire, 14.57" Long, Heated, Exact Fit
“I actually installed two oxygen sensors in my 6 cyl Toyota. One was on the backside manifold near the firewall and difficult to get to, but installed”