Infiniti QX50 Fuel and Emissions Systems

Essential Infiniti QX50 Fuel and Emissions Systems

Carquest Premium – Fuel Cap Tester Adapter: (Part No.12410)

Fuel Cap Tester Adapter:

from

$17.79
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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Delphi – Fuel Pump Module Assembly: Without Float Arm (Part No.FG2216)

Fuel Pump Module Assembly: Without Float Arm

from

$626.99
Delphi is a Tier 1 supplier to the majority of global vehicle manufacturers and has been a manufacturer of dependable fuel pumps and fuel delivery parts for over 80 years. With over 30 OE-proprietary innovations and 150 patents in fuel technologies, Delphi is regarded as a market leader in North American fuel management with sales coverage at over 95%. Learn more about our expert-led training programs and tech hotline at 1-877-463-3574. Visit our Resource Center for helpful tips and tricks on fuel pumps, technologies, and more: https://www.delphiautoparts.com/usa/en-US/resource-center.

Product Features:
  • Delphi is a global OE manufacturer and all fuel pumps are built to Delphi’s OE standards
  • Empty float height and float retention matches OE specifications and guarantees correct gas gauge reading
  • Lower amperage draws less load on vehicle’s electrical system
  • Part is validated, tested and matched to the right vehicle application
  • Always be sure to check and clean fuel tank to avoid unnecessary returns
  • Lower failure rates due to its innovative design and durability
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Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1341)

Ambient Air Temperature Sensor

from

$18.99
The temperature of various systems must be reported to the engine control module (ECM) as well as other operating system controllers in the vehicle. Coolant temperature, cabin temperature, exhaust temperature and ambient temperature are just a few systems reported by a temperature sensor. The temperature sensor is fed 5 volts by the systems computer, within the sensor housing will be a thermistor, or dropping resistor whose resistance value will change as the temperature surrounding it changes. Changing resistance in the circuit will change the volt signal at the processor indicating the current operating value.

Product Features:
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • 100% thermo-shock and vibration tested to ensure superior performance in extreme conditions.
  • 100% end-of-line tested to ensure accurate signal output providing product reliability, every time.
  • Tin plated lead frame prevents corrosion and ensures a reliable terminal connection under adverse ambient conditions.
  • Lead frame terminal size and location determined using image dimension measuring system or 3D laser scanner.
  • Application matched components ensures system operation in like new condition.
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Carquest Premium – Fuel Cap: Round, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10837)

Fuel Cap: Round, Direct Fit, Provides Tight Seal, 1 Pack

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$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
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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.
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Carquest Premium – Vapor Canister Purge Solenoid: Includes Mounting Hardware (Part No.CPC2056)

Vapor Canister Purge Solenoid: Includes Mounting Hardware

from

$202.99
Maximize your vehicle’s efficiency and emissions control with Carquest Vapor Canister Purge Solenoids. Engineered for precision, these solenoids seamlessly regulate the flow of fuel vapors from the Vapor Canister to the engine for cleaner combustion, reducing harmful emissions. Built to meet and/or exceed OEM standards, Carquest Purge Solenoids offer reliable functionality, long-lasting durability, and easy installation.

Product Features:
  • Enhances overall engine performance by providing proper vapor flow to maintain correct air-fuel mixture.
  • Helps reduce harmful emissions and ensures compliance with environmental regulations by controlling the release of fuel vapors into the engine
  • Ensures precise operation with electromagnetic principles to control the flow of fuel vapors from the carbon canister to the engine
  • Manufactured from high quality engineered materials, resistant to fuel vapors and extreme temperatures, ensuring long lasting performance
  • Meets or exceeds all OEM specifications
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Carquest Premium – Remanufactured Fuel Injector (Part No.A212-3684)

Remanufactured Fuel Injector

from

$115.99
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
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Carquest – Fuel Pump Lock Ring (Part No.579-019)

Fuel Pump Lock Ring

from

$22.99
Recommended for replacement whenever the sending unit is serviced, this fuel tank sending unit lock ring securely retains the fuel pump assembly to the lock. Made of durable materials for reliable service.

Product Features:
  • Direct replacement – this fuel tank sending unit lock ring is made to match the fit and performance of the original ring on specific vehicle applications
  • Recommended for replacement whenever the sending unit is serviced, this fuel tank sending unit lock ring securely retains the fuel pump assembly to the lock
  • 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
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Carquest Premium – Manifold Absolute Pressure Sensor (MAP) (Part No.ECA2491)

Manifold Absolute Pressure Sensor (MAP)

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$327.99
CARQUEST MAP sensors are manufactured with critical OEM components to ensure that your engine runs efficiently to reach the best gas mileage on your vehicle.

Product Features:
  • CARQUEST MAP sensors connectors are exact OE fit to ensure the proper vacuum is maintained to prevent power loss and to minimize internal contamination.
  • CARQUEST MAP sensors utilize high temperature resistant seals. Damaged seals can directly impact the vehicles fuel-to-air ratio, making it less fuel efficient.
  • CARQUEST MAP sensors are 100% individually tested for all product functionalities including proper vacuum seal and electrical output.
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Carquest Premium – Fuel Injector Seal Kit (Part No.AS045)

Fuel Injector Seal Kit

from

$6.99
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
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NTK – Wideband Oxygen Sensor: Air-Fuel Ratio 4 Wire, 15" Long, Heated, Direct Fit (Part No.24783)

Wideband Oxygen Sensor: Air-Fuel Ratio 4 Wire, 15" Long, Heated, Direct Fit

from

$157.99
NGK is the sensor specialist for import and domestic applications. Established under the NGK product family, oxygen sensors are part of our ongoing commitment to streamlining product types and increasing coverage. A ceramic company at our core, uses cutting-edge technology to control the ceramic used in our oxygen sensors from raw material to finished product. is the world’s largest supplier and manufacturer of OE oxygen sensors. Combining expertise and innovation, oxygen sensors deliver superior fit, form, and function. oxygen sensors undergo extensive testing during manufacturing to ensure quality and reliability that meets or exceeds OE specifications. As new vehicles incorporate connected and automated technologies, trust The Sensor Specialist for comprehensive market support and OE application technology.

Product Features:
  • OEM QUALITY: 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, Oxygen Sensors offer superior OE fit, form, function
  • OE TECHNOLOGY: Upgraded to the latest OE technologies, 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: 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
  • ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability
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Hitachi – Pressure Sensor – New Actual OE Part (Part No.PRS0003)

Pressure Sensor - New Actual OE Part

from

$127.99
Hitachis line of vehicle sensors are crucial to an efficiently operating vehicle. Whether is it an Automatic Transmission Speed Sensor, Crankshaft Angle Sensor, Camshaft Angle Sensor, Knock Sensor, Pressure Sensor, Temperature Sensor, Throttle Position Sensor, or Oil Level Sensor, you can rely on accurate readings and signals to be transmitted to your vehicles Electrical Control Unit (ECU) for an efficiently running system. Hitachi uses premium components and materials in the construction of all sensors extending the service interval of the product. Designed to meet the exact needs of each specific vehicle, Hitachis Sensors are the premium choice.

Product Features:
  • Provides accurate measurement; reliable engine performance.
  • 100% NEW, never remanufactured 
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Hitachi – Pressure Sensor – New Actual OE Part (Part No.PRS0002)

Pressure Sensor - New Actual OE Part

from

$138.99
Hitachis line of vehicle sensors are crucial to an efficiently operating vehicle. Whether is it an Automatic Transmission Speed Sensor, Crankshaft Angle Sensor, Camshaft Angle Sensor, Knock Sensor, Pressure Sensor, Temperature Sensor, Throttle Position Sensor, or Oil Level Sensor, you can rely on accurate readings and signals to be transmitted to your vehicles Electrical Control Unit (ECU) for an efficiently running system. Hitachi uses premium components and materials in the construction of all sensors extending the service interval of the product. Designed to meet the exact needs of each specific vehicle, Hitachis Sensors are the premium choice.

Product Features:
  • Provides accurate measurement; reliable engine performance.
  • 100% NEW, never remanufactured 
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NTK – Switching Oxygen Sensor: 4 Wire, 14.5" Long, Heated, Direct Fit (Part No.24167)

Switching Oxygen Sensor: 4 Wire, 14.5" Long, Heated, Direct Fit

from

$98.99
NGK is the sensor specialist for import and domestic applications. Established under the NGK product family, oxygen sensors are part of our ongoing commitment to streamlining product types and increasing coverage. A ceramic company at our core, uses cutting-edge technology to control the ceramic used in our oxygen sensors from raw material to finished product. is the world’s largest supplier and manufacturer of OE oxygen sensors. Combining expertise and innovation, oxygen sensors deliver superior fit, form, and function. oxygen sensors undergo extensive testing during manufacturing to ensure quality and reliability that meets or exceeds OE specifications. As new vehicles incorporate connected and automated technologies, trust The Sensor Specialist for comprehensive market support and OE application technology.

Product Features:
  • OEM QUALITY: 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, Oxygen Sensors offer superior OE fit, form, function
  • OE TECHNOLOGY: Upgraded to the latest OE technologies, 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: 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
  • ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability
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Bosch – Oxygen Sensor: 4 Wire, 14.76" Long, Heated, Exact Fit (Part No.18137)

Oxygen Sensor: 4 Wire, 14.76" Long, Heated, Exact Fit

from

$149.99
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. From overall sensor design to the critical ceramic element, Bosch is known worldwide for quality and performance.

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

Fuel Tank Cleaning Kit

from

$12.49
When replacing a fuel pump or module, it’s extremely important to clean the tank. Existing dirt, debris, and contamination stuck in the fuel tank can clog the brand-new strainer. Delphi’s Fuel Tank Cleaning Kit (FC01) and Tool (FC02) can help clean your fuel tank in less than five minutes. The FC01 includes a low-suds solution, cloth, and gloves that works together with the FC02 to help clean those hard to reach places without having to remove the fuel tank. Visit our Resource Center for helpful tips and tricks on fuel pumps, technologies, and more: https://www.delphiautoparts.com/usa/en-US/resource-center.

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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Carquest Premium – Multi-Use Connector (Part No.PTA2918)

Multi-Use Connector

from

$157.99
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.
  • WVE 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.
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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
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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
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Felpro – Fuel Injection Throttle Body Mounting Gasket (Part No.61785)

Fuel Injection Throttle Body Mounting Gasket

from

$9.99
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
  • Validated for fit, form, and function
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Carquest Premium – Vapor Canister Vent Solenoid: Includes Mounting Hardware (Part No.CPC1008)

Vapor Canister Vent Solenoid: Includes Mounting Hardware

from

$99.99
Product Features:
  • Provides closure for the EVAP system (normally vented) during OBD II test cycle
  • Includes integrated filter, where applicable, that captures contaminants and particulates from incoming air, preventing clogging and ensuring clean airflow
  • Quick valve response to engine demands, ensuring efficient venting of vapors and optimizing overall engine performance
  • Meets or exceeds all OEM specifications
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Dorman – Evaporative Emissions Canister Vent Valve (Part No.911-504)

Evaporative Emissions Canister Vent Valve

from

$115.99
A malfunctioning vapor canister vent solenoid can cause the engine light to come on. This vapor canister vent solenoid is engineered of quality materials for durability to ensure proper operation of the vehicle’s evaporative emissions system.

Product Features:
  • Direct replacement – this vapor canister vent solenoid fits and performs like original equipment with simple plug-and-play installation
  • Quality construction – manufactured from premium materials for a long service life
  • Excellent value – original equipment function at a lower price
  • Quality tested – has undergone simulation and endurance testing to ensure proper fit and performance
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Helping You Find the Right Fuel and Emissions Systems for Your Infiniti QX50

You love your QX50. So we’ve made it easier than ever to help you find Infiniti QX50 Fuel and Emissions Systems in our online catalog. Our inventory holds 50 aftermarket and OEM Fuel and Emissions Systems for your Infiniti QX50, ranging from $4.29 to $705.99.

We offer parts from 11 brands trusted to make quality Fuel and Emissions Systems for your Infiniti QX50. Before you buy, take some time to read through customer reviews. We currently have 2,584 reviews of Infiniti QX50 Fuel and Emissions Systems from previous customers. Some of the top rated parts include Locking Fuel Tank Cap with 4.3 stars and Locking Fuel Tank Cap with 4.6 stars.

Find your QX50 Fuel and Emissions Systems here, order online, and have your order shipped directly to your home. Prefer to have an in-person look at your Infiniti QX50 part to confirm it’s just right? You can find your nearest Advance Auto Parts store and confirm they have the part in stock before heading over.

Top Fuel and Emissions Systems Brands for Your Infiniti QX50

Our inventory holds Fuel and Emissions Systems for your Infiniti QX50 from 11 trusted brands. You’ll find OEM and aftermarket parts from brands like Carquest Premium, Motorad, and Hitachi, all of which can keep that Infiniti happy.
We have Dorman parts available for your Infiniti QX50 in categories like Vapor Canister Purge Valves. Some of the top-rated Dorman parts in these categories are:
Evaporative Emissions Canister Vent Valve
from $115.99
(2)
Evaporative Emissions Canister Vent Valve
Vapor Canister Vent Solenoids

Top-Rated Carquest Premium Fuel and Emissions Systems

Leading Carquest Premium Fuel and Emissions Systems

We carry Carquest Premium brand parts for your Infiniti QX50 across several catalog categories, including Gas Caps. Some of our most reviewed Carquest Premium parts include:
Non-Locking Fuel Tank Cap
from $15.49
(142)
Non-Locking Fuel Tank Cap
Gas Caps

FAQs for Infiniti QX50 Fuel and Emissions Systems

What are the most purchased Fuel and Emissions Systems for the Infiniti QX50?

Out of 50 Fuel and Emissions Systems for the Infiniti QX50, the most popular in our inventory are:
Non-Locking Tethered Fuel Tank Cap
from $24.29
This product is not rated
Non-Locking Tethered Fuel Tank Cap
Gas Caps
Air Flow Sensor - New Actual OE Part
from $143.99
(16)
Air Flow Sensor – New Actual OE Part
Air Flow Meters and Mass Air

What are the top-rated Infiniti QX50 Fuel and Emissions Systems?

Top-rated Fuel and Emissions Systems for your Infiniti QX50 based on customer reviews/ratings are:
Locking Fuel Tank Cap
from $23.99
(35)
Locking Fuel Tank Cap
“It works great”
Locking Fuel Tank Cap
from $24.99
(32)
Locking Fuel Tank Cap
“Lost old gas cap and replaced with this one, which comes with a lock (which you don’t have to use,FYI)”
Non-Locking Fuel Tank Cap
from $16.99
(25)
Non-Locking Fuel Tank Cap
“Will buy again”