2003 Infiniti M45 Fuel Injectors

Keep Your 2003 Infiniti M45 in Top Shape with Quality Fuel Injectors

Whether you’re repairing or upgrading your Fuel Injector, using high-quality parts is key to keeping your 2003 Infiniti M45 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Air Flow Meters and Mass Air, Fuel Injector Gaskets, and Fuel Injectors. 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 Fuel Injectors from Trusted Brands

Looking for a reliable Fuel Injector? We’ve got you covered with options from brands you know and trust like FELPRO and Carquest. For example, FELPRO Fuel Injectors start at just $4.29 with an average 4.6 star rating. Carquest offer similar pricing and quality, backed by strong customer feedback. With over 111 reviews and a solid 5 star average, you can shop with confidence knowing other Infiniti M45 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 2003 Infiniti M45 Fuel Injector at Advance Auto Parts is around $112.46, with a range that starts at $4.29 and goes up to $341.99. With 15 options in stock from 8 trusted brands, finding the right fit is easy. Popular picks like Fuel Injector Seal Kit, Fuel Injector Connector, and Fuel Injector Seal Kit start at just $4.29 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Fuel Injector, don’t forget to check out other key components like Gas Caps and Oxygen Sensors. At Advance Auto Parts, we’re here to help you keep your 2003 Infiniti M45 in peak condition, inside and out.

Essential 2003 Infiniti M45 Fuel Injectors

Carquest Premium – Fuel Injector Seal Kit (Part No.AS008)

Fuel Injector Seal Kit

from

$8.99
CARQUEST fuel injector seal kits include the necessary O-rings and seals to properly reseal the injector, which is a recommended practice any time the injector is removed. Each kit services one injector and includes hard to find or previously dealer-only components.

Product Features:
  • Premium OE quality materials
  • Services one injector
See More

Carquest – Fuel Injector Seal Kit (Part No.274838)

Fuel Injector Seal Kit

from

$8.99
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
  • High-quality materials withstand extreme conditions
  • Undergoes extensive testing to ensure reliability
  • As a global manufacturer of automotive aftermarket products, we maintain complete quality control throughout the manufacturing process
See More

Carquest Premium – Fuel Injector Connector (Part No.PTA1064)

Fuel Injector Connector

from

$4.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.

Product Features:
  • Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
  • Product constructed to meet all design and operating characteristics as intended by the manufacturer.
See More

Carquest – Fuel Injector Connector (Part No.PT2318)

Fuel Injector Connector

from

$4.29
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
  • All electrical connectors are 100% tested for proper mechanical and electrical fit, form and function
  • Offering thousands of high-quality pigtails & sockets for nearly every electrical job
See More

Felpro – Fuel Injection Plenum Gasket Set (Part No.MS 97340)

Fuel Injection Plenum Gasket Set

from

$104.99
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:
  • 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
See More

Felpro – Fuel Injection Throttle Body Mounting Gasket (Part No.61342)

Fuel Injection Throttle Body Mounting Gasket

from

$4.29
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

Carquest Premium – Remanufactured Fuel Injector (Part No.A212-2394)

Remanufactured Fuel Injector

from

$61.99
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

Hitachi – Fuel Injector – New Actual OE Part (Part No.FIJ0001)

Fuel Injector - New Actual OE Part

from

$96.99
Hitachi’s Fuel Injectors (FIJs) are designed to optimize fuel economy and performance by providing extraordinary accuracy and application specific spray patterns with quick response times. Hitachi’s high-speed electromagnet and pintle precisely control the flow of fuel. High quality materials ensure that even under the most extreme conditions, Hitachi’s FIJs will not deform or malfunction. Our FIJs are 100% flow tested for ideal performance and are calibrated for each application ensuring your vehicle meets the strict emission standards set by the OE manufacturer. Designed to meet the exact needs of each specific vehicle, Hitachi’s Fuel Injectors are the premium choice. Hitachi is a Tier One OE supplier to the largest automobile manufacturers globally, delivering industry leading quality, and exceeding customer expectations with our products and service. Hitachi is bringing that same knowledge and expertise to the premium products we deliver in the Aftermarket because Quality Matters.

Product Features:
  • Hitachi is a Tier 1 OE supplier for fuel injectors
  • 100% NEW, never remanufactured
  • Meets the OE performance and durability standards for this application
  • 100% flow tested for ideal performance
  • High-speed electromagnet and pintle for precise fuel dispersion
  • Application specific spray patterns for optimized fuel efficiency and performance
  • O-Ring included when applicable
See More

Delphi – Mass Air Flow Sensor (Part No.AF10141)

Mass Air Flow Sensor

from

$181.99
Every single Delphi mass air flow (MAF) sensor that we manufacture – whether with or without the housing – is built with calibrated all-new components and is never remanufactured. Our mass air flow sensors are designed and tested to meet or exceed OE requirements, and engineered for a perfect fit in more than 180 million vehicles on the road today in North America – including makes from Ford, Toyota, Nissan, Volkswagen, Hyundai, BMW, Honda, GM, Mazda, Subaru, Acura and more.

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
See More

Cardone – Remanufactured Mass Air Flow Sensor (Part No.74-50036)

Remanufactured Mass Air Flow Sensor

from

$156.99
CARDONE Remanufactured Mass Air Flow Sensors (MAFS) precisely track O.E. output curves and maintain specific tolerances to ensure accurate scan tool readings for proper operation. 100% re-soldering of critical components ensures superior electrical connections, eliminates intermittent failures and lengthens product life. With CARDONE Mass Air Flow Sensors (MAFS), you can expect smoot h vehicle performance.

Product Features:
  • 100% re-solder of critical components ensures superior electrical connections, no intermittent failures and longer product life.
  • On-car vehicle validation routines ensure that modules meet all form, fit, durability and performance requirements.
  • All modules are 100% tested with automated computer test equipment to ensure full functionality and reliability.
  • Our sensors precisely track O.E. output curves and maintain spec tolerances to ensure accurate feedback to the vehicle¿s engine control management system.
  • Our sensors precisely track O.E. output curves and maintain spec tolerances to ensure accurate feedback to the vehicle┐s engine control management system.
  • Components are rated to handle demanding temperature variations for optimum reliability in every environment.
  • As a remanufactured Original Equipment part, this unit guarantees a perfect vehicle fit.
  • Our remanufacturing process is earth-friendly, as it reduces the energy and raw material needed to make a new part by 80%.
See More

Hitachi – Air Flow Sensor – New Actual OE Part (Part No.MAF0101)

Air Flow Sensor - New Actual OE Part

from

$341.99
Hitachis Air Flow Sensors (MAFs) measure the amount and characteristics of air entering the engine. Hitachi uses precision elements and high-quality components for enhanced durability and accurate air flow measurements. Hitachi MAFs are 100% air flow tested for ideal performance and are calibrated for each application ensuring your vehicle meets the strict emission standards set by the manufacturer. Details such as a contaminant bypass port (when applicable) and protected circuitry providing a durable and reliable product approved by OE manufacturers makes Hitachis air flow sensors the premium choice.

Product Features:
  • Hitachi is a Tier 1 OE supplier for air flow sensors
  • 100% NEW, never remanufactured
  • Hitachi’s advanced precision elements and high quality components provide enhanced durability. We feature exact fitment and calibration for each vehicle, which assists engine efficiency and fuel mileage. Our sensors are 100% air flow tested to meet exac
  • Precision manufactured and assembled sensing elements for accurate air flow measurements
See More

Hitachi – Air Flow Sensor – New Actual OE Part (Part No.MAF0031)

Air Flow Sensor - New Actual OE Part

from

$143.99
Hitachis Air Flow Sensors (MAFs) measure the amount and characteristics of air entering the engine. Hitachi uses precision elements and high-quality components for enhanced durability and accurate air flow measurements. Hitachi MAFs are 100% air flow tested for ideal performance and are calibrated for each application ensuring your vehicle meets the strict emission standards set by the manufacturer. Details such as a contaminant bypass port (when applicable) and protected circuitry providing a durable and reliable product approved by OE manufacturers makes Hitachis air flow sensors the premium choice.

Product Features:
  • Hitachi is a Tier 1 OE supplier for air flow sensors
  • 100% NEW, never remanufactured
  • Hitachi’s advanced precision elements and high quality components provide enhanced durability. We feature exact fitment and calibration for each vehicle, which assists engine efficiency and fuel mileage. Our sensors are 100% air flow tested to meet exac
  • Precision manufactured and assembled sensing elements for accurate air flow measurements
See More

Carquest Premium – Mass Air Flow Sensor (MAF) – 100% NEW (Part No.MQ6210)

Mass Air Flow Sensor (MAF) - 100% NEW

from

$135.99
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

Cardone – Remanufactured Mass Air Flow Sensor (Part No.74-10132)

Remanufactured Mass Air Flow Sensor

from

$297.99
CARDONE Remanufactured Mass Air Flow Sensors (MAFS) precisely track O.E. output curves and maintain specific tolerances to ensure accurate scan tool readings for proper operation. 100 percent re-soldering of critical components ensures superior electrical connections, eliminates intermittent failures and lengthens product life. With CARDONE Mass Air Flow Sensors (MAFS), you can expect smooth vehicle performance.

Product Features:
  • 100 percent re-solder of critical components ensures superior electrical connections, no intermittent failures and longer product life.
  • On-car vehicle validation routines ensure that modules meet all form, fit, durability and performance requirements.
  • All modules are 100 percent tested with automated computer test equipment to ensure full functionality and reliability.
  • Our sensors precisely track O.E. output curves and maintain spec tolerances to ensure accurate feedback to the vehicle’s engine control management system.
  • Components are rated to handle demanding temperature variations for optimum reliability in every environment.
  • As a remanufactured Original Equipment part, this unit guarantees a perfect vehicle fit.
  • Our remanufacturing process is earth-friendly, as it reduces the energy and raw material needed to make a new part by 80 percent.
See More

Victor Reinz – Fuel Injector O-Ring Kit (Part No.18-10027-01)

Fuel Injector O-Ring Kit

from

$8.99
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

Felpro – Fuel Injector O-Ring Kit (Part No.ES 70599)

Fuel Injector O-Ring Kit

from

$8.49
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:
  • 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
See More

Wells Vehicle Electronics – Fuel Injection Pressure Damper (Part No.3G1065)

Fuel Injection Pressure Damper

from

$251.99
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

Wells Vehicle Electronics – Fuel Injection Pressure Damper (Part No.3G1064)

Fuel Injection Pressure Damper

from

$159.99
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

Wells Vehicle Electronics – Fuel Injection Pressure Damper (Part No.3G1062)

Fuel Injection Pressure Damper

from

$84.99
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

Most Popular Air Flow Meters and Mass Air for 2003 Infiniti M45s

Enhance your 2003 Infiniti M45 with one of the 3 Air Flow Meters and Mass Air we have in stock, starting at just $297.99.

Hitachi – Air Flow Sensor – New Actual OE Part (Part No.MAF0101)

Air Flow Sensor - New Actual OE Part

from

$341.99
Hitachis Air Flow Sensors (MAFs) measure the amount and characteristics of air entering the engine. Hitachi uses precision elements and high-quality components for enhanced durability and accurate air flow measurements. Hitachi MAFs are 100% air flow tested for ideal performance and are calibrated for each application ensuring your vehicle meets the strict emission standards set by the manufacturer. Details such as a contaminant bypass port (when applicable) and protected circuitry providing a durable and reliable product approved by OE manufacturers makes Hitachis air flow sensors the premium choice.

Product Features:
  • Hitachi is a Tier 1 OE supplier for air flow sensors
  • 100% NEW, never remanufactured
  • Hitachi’s advanced precision elements and high quality components provide enhanced durability. We feature exact fitment and calibration for each vehicle, which assists engine efficiency and fuel mileage. Our sensors are 100% air flow tested to meet exac
  • Precision manufactured and assembled sensing elements for accurate air flow measurements
See More

Delphi – Mass Air Flow Sensor (Part No.AF10619)

Mass Air Flow Sensor

from

$341.99
Every single Delphi mass air flow (MAF) sensor that we manufacture – whether with or without the housing – is built with calibrated all-new components and is never remanufactured. Our mass air flow sensors are designed and tested to meet or exceed OE requirements, and engineered for a perfect fit in more than 180 million vehicles on the road today in North America – including makes from Ford, Toyota, Nissan, Volkswagen, Hyundai, BMW, Honda, GM, Mazda, Subaru, Acura and more.

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
See More

Cardone – Remanufactured Mass Air Flow Sensor (Part No.74-10132)

Remanufactured Mass Air Flow Sensor

from

$297.99
CARDONE Remanufactured Mass Air Flow Sensors (MAFS) precisely track O.E. output curves and maintain specific tolerances to ensure accurate scan tool readings for proper operation. 100 percent re-soldering of critical components ensures superior electrical connections, eliminates intermittent failures and lengthens product life. With CARDONE Mass Air Flow Sensors (MAFS), you can expect smooth vehicle performance.

Product Features:
  • 100 percent re-solder of critical components ensures superior electrical connections, no intermittent failures and longer product life.
  • On-car vehicle validation routines ensure that modules meet all form, fit, durability and performance requirements.
  • All modules are 100 percent tested with automated computer test equipment to ensure full functionality and reliability.
  • Our sensors precisely track O.E. output curves and maintain spec tolerances to ensure accurate feedback to the vehicle’s engine control management system.
  • Components are rated to handle demanding temperature variations for optimum reliability in every environment.
  • As a remanufactured Original Equipment part, this unit guarantees a perfect vehicle fit.
  • Our remanufacturing process is earth-friendly, as it reduces the energy and raw material needed to make a new part by 80 percent.
See More

Best-Selling 2003 Infiniti M45 Fuel Injector Gasket

Upgrade your M45 with our best-selling Fuel Injector Gasket with a 5 Starts rating across 1 review.

Felpro – Fuel Injection Throttle Body Mounting Gasket (Part No.61342)

Fuel Injection Throttle Body Mounting Gasket

from

$4.29
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

Top-Quality Fuel Injectors for 2003 Infiniti M45s

Choose a high-quality OEM or aftermarket Fuel Injector for Infiniti M45s and enjoy top-notch performance from $61.99.

Hitachi – Fuel Injector – New Actual OE Part (Part No.FIJ0001)

Fuel Injector - New Actual OE Part

from

$96.99
Hitachi’s Fuel Injectors (FIJs) are designed to optimize fuel economy and performance by providing extraordinary accuracy and application specific spray patterns with quick response times. Hitachi’s high-speed electromagnet and pintle precisely control the flow of fuel. High quality materials ensure that even under the most extreme conditions, Hitachi’s FIJs will not deform or malfunction. Our FIJs are 100% flow tested for ideal performance and are calibrated for each application ensuring your vehicle meets the strict emission standards set by the OE manufacturer. Designed to meet the exact needs of each specific vehicle, Hitachi’s Fuel Injectors are the premium choice. Hitachi is a Tier One OE supplier to the largest automobile manufacturers globally, delivering industry leading quality, and exceeding customer expectations with our products and service. Hitachi is bringing that same knowledge and expertise to the premium products we deliver in the Aftermarket because Quality Matters.

Product Features:
  • Hitachi is a Tier 1 OE supplier for fuel injectors
  • 100% NEW, never remanufactured
  • Meets the OE performance and durability standards for this application
  • 100% flow tested for ideal performance
  • High-speed electromagnet and pintle for precise fuel dispersion
  • Application specific spray patterns for optimized fuel efficiency and performance
  • O-Ring included when applicable
See More

Carquest Premium – Remanufactured Fuel Injector (Part No.A212-2394)

Remanufactured Fuel Injector

from

$61.99
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

Top Picks for 2003 Infiniti M45 Fuel Injector Seal Kits

Invest in one of our 2 durable Fuel Injector Seal Kits for your 2003 Infiniti, knowing you’re getting trusted brands and expert craftsmanship.

Carquest Premium – Fuel Injector Seal Kit (Part No.AS008)

Fuel Injector Seal Kit

from

$8.99
CARQUEST fuel injector seal kits include the necessary O-rings and seals to properly reseal the injector, which is a recommended practice any time the injector is removed. Each kit services one injector and includes hard to find or previously dealer-only components.

Product Features:
  • Premium OE quality materials
  • Services one injector
See More

Carquest – Fuel Injector Seal Kit (Part No.274838)

Fuel Injector Seal Kit

from

$8.99
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
  • High-quality materials withstand extreme conditions
  • Undergoes extensive testing to ensure reliability
  • As a global manufacturer of automotive aftermarket products, we maintain complete quality control throughout the manufacturing process
See More

Top-Rated Fuel Injector O-Ring Kits for 2003 Infiniti M45s

Make a smart move for your 2003 Infiniti M45 with products all priced from $8.49 to $8.99.

Felpro – Fuel Injector O-Ring Kit (Part No.ES 70599)

Fuel Injector O-Ring Kit

from

$8.49
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:
  • 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
See More

Victor Reinz – Fuel Injector O-Ring Kit (Part No.18-10027-01)

Fuel Injector O-Ring Kit

from

$8.99
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

Top-Rated Fuel Injector Brands For Your 2003 Infiniti M45

When it comes to finding the perfect Fuel Injector for your 2003 Infiniti M45, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 8 trusted brands. We carry the most popular Fuel Injector brands including FELPRO and Carquest, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $4.29. Purchasing a Fuel Injector from us here at Advance Auto Parts is a smart move for both you and your 2003 Infiniti M45, providing peace of mind with parts that meet or exceed OEM standards.

Popular FELPRO 2003 Infiniti M45 Fuel Injectors

If you’re looking for a top-quality Fuel Injector for your 2003 Infiniti M45, Advance Auto Parts has exactly what you need with our selection of FELPRO Fuel Injectors. We have 2 FELPRO Fuel Injectors in stock for this fitment, all known for their durability and precision fit. With prices starting at just $4.29 and an average cost of $6.39, you’ll find the perfect Fuel Injector for your needs and budget. FELPRO Fuel Injectors for the 2003 Infiniti M45 come highly rated, with over 110 customer reviews and an impressive average rating of 4.6 stars. Choosing a FELPRO Fuel Injector from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Fuel Injector O-Ring Kit
from $8.49
(109)
Fuel Injector O-Ring Kit
“Good parts”
Fuel Injection Throttle Body Mounting Gasket
from $4.29
(1)
Fuel Injection Throttle Body Mounting Gasket
“Great fit”

Top-Quality Carquest 2003 Infiniti M45 Fuel Injectors

For those in search of a high-quality Fuel Injector for their 2003 Infiniti M45, Advance Auto Parts offers a great selection of Carquest Fuel Injectors. With 1 Carquest Fuel Injectors in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Fuel Injectors start at just $4.29, giving you a range of options to suit your budget. Backed by over 1 customer ratings and an average rating of 4.4 stars, Carquest Fuel Injectors provide both reliability and excellent performance. Choosing a Carquest Fuel Injector from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Fuel Injector Connector
from $4.29
(1)
Fuel Injector Connector
“Used to seal a gasket.”

FAQs for 2003 Infiniti M45 Fuel Injectors

What are the best-selling Fuel Injectors for 2003 Infiniti M45s?

Out of 15 Fuel Injectors that fit 2003 Infiniti M45s, the following parts are the top sellers:

What’s the price range for 2003 Infiniti M45 Fuel Injectors?

The prices of Fuel Injectors for the 2003 Infiniti M45 range from $4.29 up to $341.99 for the most premium parts.

What is the average price of a Fuel Injector for a 2003 Infiniti M45?

The average price for Fuel Injectors for the 2003 Infiniti M45 is $112.46. Keep in mind the variety of part types within our Fuel Injector category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Fuel Injectors for other Infiniti M45 model years?

Yes, we carry Fuel Injectors for 5 model years of Infiniti M45s between 2004 and 2010. The following model years are the most popular for Fuel Injector purchases: 2010, 2009, 2008, 2007, 2006, and 2004.

What are the cheapest Fuel Injectors for my 2003 Infiniti M45?

The cheapest 2003 Infiniti M45 Fuel Injectors we carry are:

Does Advance Auto Parts sell Fuel Injectors for any other 2003 Infiniti models?

Yes. We stock Fuel Injectors for 5 other popular 2003 Infiniti models. Some of the most popular are 2003 G35 Fuel Injectors, 2003 Q45 Fuel Injectors, 2003 FX35 Fuel Injectors, 2003 I35 Fuel Injectors, and 2003 QX4 Fuel Injectors.

What are the top-rated Fuel Injectors that fit the 2003 Infiniti M45?

Based on 111 reviews by customers, our 2003 Infiniti M45 Fuel Injectors have an average customer rating of 5 stars. These are the highest-rated categories of Fuel Injectors for the 2003 Infiniti M45 and their top-rated products:

What types of Fuel Injectors do you sell for my 2003 Infiniti M45?

As of 11/2/25, these are some of the most in-demand types of Fuel Injectors for a 2003 Infiniti M45:

Can I get help with 2003 Infiniti M45 Fuel Injector orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Infiniti Fuel Injectors and more.

What is your return policy for Infiniti M45 Fuel Injectors?

Advance Auto Parts keeps returns simple. For new Infiniti M45 Fuel Injectors and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.