2001 Audi S4 Fuel and Emissions Systems

Name: Fuel Injector O-Ring Kit
Brand: Victor Reinz
SKU: 18-10027-01
Price: 8.99 USD

Below you will find various in-demand Audi Fuel and Emissions Systems, components and accessories for your 2001 S4. Advance Auto Parts has popular S4 parts like Gas Caps, Fuel Pumps, Air Flow Sensors and more. You’ll also find aftermarket and OEM Fuel and Emissions Systems for other S4 model years including 2014, 2015, 2016, 2018, 2019, 2020, 2021, 2022, 2023 and more. Select a category of 2001 Audi S4 Fuel and Emissions Systems below and start saving instantly.

Popular 2001 Audi S4 Fuel and Emissions Systems Categories

Fuel Tank Cleaning Kits

Air Flow Meters and Mass Air

Gas Caps

Fuel Pumps

Oxygen Sensors

Ambient Air Temperature Sensor Connectors

Pressure Regulators

Air Charge Temperature Sensors

Ambient Air Temperature Sensors

Fuel Injector O-Ring Kits

Fuel Injector Seal Kits

Mass Air Flow Sensor Connectors

Engine Crankcase Suction Pumps

Fuel Cap Tester Adapters

Essential Fuel and Emissions Systems for 2001 Audi S4s

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.

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$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

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$20.99

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:

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

from

$15.99

Product Features:

Protects your fuel from theft and vandalism
Manufactured from durable, long-life materials
Manufactured from durable, long-life materials
Independently tested for emission control
Passes all state and federal emissions tests
Reduces air pollution with proper sealing and venting

from

$64.99

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

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$172.99

Precision is key for the fuel pressure regulator on any vehicle. At Delphi, we use OE engineering to test our regulators and fuel technologies to ensure the utmost performance and durability. Our Nitrile¿ diaphragms are resilient against high-ethanol fuels, and we utilize two designs to help meet emissions standards while covering a wide array of domestic vehicles. With over 30 OE-proprietary innovations and 150 patents in fuel technologies, Delphi is regarded as a market leader in North American fuel management. 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:

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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$71.99

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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$89.99

Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
Includes Smart Link Connector, no soldering required
No special tools required for installation
Seared protection tube due to 100% functional quality test
Performance meets or exceeds OE specifications

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$9.99

The ACDelco Professional Fuel Injector Seal Kit contains high quality aftermarket replacement components for one or more of the following vehicle systems: ignition, and/or engine fuel management. This premium aftermarket kit contains components that are manufactured to meet or exceed your expectations for fit, form, and function.

Product Features:

Professional, premium aftermarket replacement
Provides the performance and dependability you expect from ACDelco
Manufactured to meet expectations for fit, form, and function

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$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

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$43.99

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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$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

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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$16.79

ACDelco Professional Air Charge Temperature Sensor Connector is a high quality aftermarket replacement component for one or more of the following vehicle systems: ignition, starting and charging, body-electrical and lighting, andor engine fuel management. This premium aftermarket connector is manufactured to meet or exceed your expectations for fit, form, and function.

Product Features:

Professional, premium aftermarket replacement
Provides the performance and dependability you expect from ACDelco
Manufactured to meet expectations for fit, form, and function

from

$67.99

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.

from

$65.99

The Engine Crankcase Suction Pump is part of the crankcase ventilation system and is designed to pull the crankcase vapors from the crankcase and into the crankcase ventilation system where they are drawn into the engine air intake system and burned during the combustion process.

Product Features:

Application matched component to ensure the system can be returned to like new condition.
Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.

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$161.99

Hitachi’s 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 Hitachi’s air flow sensors the premium choice.

Product Features:

Meets the OE performance and durability standards for this application
Welded connections instead of soldered for dependability
Contaminant bypass port provides reliable operation and increases longevity
Contaminant bypass port provides reliable operation and increases longevity
Welded connections instead of soldered for dependability
Meets the OE performance and durability standards for this application

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$141.99

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.

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$162.99

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:

All parts are calibrated and tested to match the OE part
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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$837.99

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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$83.99

Delphi is a global OE manufacturer and all fuel pumps are built to Delphi’s OE standards
Delphi pumps are designed to operate under extreme temperatures with quick engine starts and to avoid low-fuel hesitation, including alcohol fuels and blends
Improved pump performance as a result of Delphi’s innovative design and durability
Restores fast pressure performance and system integrity, translating to better pumping through less energy
Part is validated, tested and matched to the right vehicle application
Lower amperage draws less load on vehicle’s electrical system
Always be sure to check and clean fuel tank to avoid unnecessary returns
Always replace the fuel strainer when doing a fuel pump repair

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$513.99

Continental fuel modules are a genuine OEM part. They are identical in fit, form, and function and provide the genuine quality of OE components supplied to auto manufacturers worldwide. Professional technicians and DIYers alike want quality products for ease of installation, fit, and performance. Continental fuel modules are designed for long service life and simplified installation. They are built in OE ISO TS certified facilities and manufactured to the highest quality standards. They offer dependable performance and robust design by being a genuine OEM part while still maintaining a competitive price.

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$36.99

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.

from

$67.99

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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$13.99

Electrical parts control all aspects of vehicles on the road today. Replacing these components when they are starting to fail will ensure your vehicle has maximum performance and fuel economy. This is why Rein Automotive electrical parts are application specific and match the design and function of the OE parts.

Product Features:

Tested to ensure maximum performance
Manufactured to strict engineering standards/specifications in materials and tolerances
Long life and durability
Made by the OE manufacturer

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$13.99

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.
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

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$23.99

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.
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

Upgrade your 2001 Audi S4 with Top-Quality Fuel and Emissions Systems

When it comes to maintaining or upgrading your 2001 Audi S4, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Audi or enhancing its overall performance, Fuel and Emissions Systems are key to keeping your S4 functioning at its best. At Advance Auto Parts, we offer a wide selection of 23 Fuel and Emissions Systems for the 2001 Audi S4, designed to meet your needs without breaking the bank. From Gas Cap replacements to Fuel Pumps upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Fuel and Emissions Systems for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Fuel and Emissions Systems for your 2001 Audi S4 at great prices. Our Fuel and Emissions Systems inventory for this model ranges from just $8.49 to $245.99, with an average price of $64.84. Our 23 Fuel and Emissions Systems in stock come from 10 trusted brands, so you’re sure to find the right part for your 2001 Audi S4 without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2001 Audi S4, we stock popular OEM and aftermarket Fuel and Emissions Systems from top names like FELPRO, Hitachi, Carquest Premium, and more. FELPRO Fuel and Emissions Systems start at just $8.49 and boast an impressive 4.6 stars average rating from customers. Hitachi and Carquest Premium also bring quality to the table, with Fuel and Emissions Systems available starting at $12.99, and at an average 4.5 stars rating. With 522 customer reviews and counting, our 2001 Audi S4 Fuel and Emissions Systems have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Fuel and Emissions System upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 2001 Audi S4 is always ready to roll. We’re committed to providing you with everything you need to keep your S4 in top shape, all in one place. Start shopping confidently below for your 2001 Audi S4!

Best-Selling Gas Caps for 2001 Audi S4s

Enhance the driving experience in your Audi with 3 quality Gas Cap components, starting at $12.99.

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from

$20.99

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

from

$12.99

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

from

$15.99

Come pre-assembled for quick and easy installation.
Several fastener options to work with any fuel cap compartment configuration
Fits vehicles orginally equipped with tether
Reduces air pollution with proper sealing and venting
Manufactured from durable, long-life materials

Top Picks for 2001 Audi S4 Air Flow Sensors

Upgrade Audi S4s with top-quality Air Flow Sensors parts, including 5 OEM and aftermarket selections for your 2001 model.

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from

$23.99

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.
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

from

$13.99

Carquest electrical connectors meet or exceed OE wire gauge, insulation, and terminal material requirements.
Sealed connections (where applicable) to prevent environmental corrosion and performance issues
Global coverage for import and/or domestic applications
OE specified wire gauge to ensure a reliable electrical connection
Designed to meet or exceed OE specifications in form, fit and function

from

$16.79

Professional, premium aftermarket replacement
Provides the performance and dependability you expect from ACDelco
Manufactured to meet expectations for fit, form, and function

from

$13.99

Tested to ensure maximum performance
Manufactured to strict engineering standards/specifications in materials and tolerances
Long life and durability
Made by the OE manufacturer

from

$67.99

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.

In-Demand Oxygen Sensors for 2001 Audi S4s

Select from 2 premium Oxygen Sensors parts for your 2001 Audi S4, with prices ranging from $92.99 to $134.99.

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from

$92.99

Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
Includes Smart Link Connector, no soldering required
No special tools required for installation
Seared protection tube due to 100% functional quality test
Performance meets or exceeds OE specifications

from

$134.99

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

Most Sold 2001 Audi S4 Fuel Injectors

Explore our best-selling Audi parts for the 2001 S4 among 8 OEM and aftermarket options starting from $8.49.

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from

$161.99

Meets the OE performance and durability standards for this application
Welded connections instead of soldered for dependability
Contaminant bypass port provides reliable operation and increases longevity
Contaminant bypass port provides reliable operation and increases longevity
Welded connections instead of soldered for dependability
Meets the OE performance and durability standards for this application

from

$8.49

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

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

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$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

from

$91.99

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

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$223.99

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

from

$172.99

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

from

$64.99

Top-Rated Fuel and Emissions Systems Brands For Your 2001 Audi S4

Shop for the best-rated brands offering Fuel and Emissions Systems and other products for your 2001 Audi S4s. Below you’ll find some of our best rated Fuel and Emissions Systems from FELPRO, Hitachi, and Carquest Premium, and more. Fuel and Emissions Systems from these brands that fit a 2001 S4 start at just $8.49 and are rated as high as 4.6 stars. OEM and aftermarket Fuel and Emissions Systems don’t get more top quality, durable, and affordable than from the brands below.

Popular FELPRO 2001 Audi S4 Fuel and Emissions Systems

When it comes to maintaining or upgrading your 2001 Audi S4, using quality Fuel and Emissions Systems is essential to ensure durability and a perfect fit. FELPRO ticks all of those boxes. We offer a wide selection of FELPRO Fuel and Emissions Systems, specifically designed for the 2001 Audi S4. With over 1 FELPRO brand Fuel and Emissions Systems in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $8.49. Plus, with over 109 customer reviews and an average rating of 4.6 stars, you can trust that our FELPRO Fuel and Emissions Systems will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

from $8.49

(109)

Fuel Injector O-Ring Kit

“Good parts”

Popular Hitachi 2001 Audi S4 Fuel and Emissions Systems

Hitachi auto parts is one of the highest quality Fuel and Emissions System brands in the market. Any 2001 Audi S4 owner should feel confident when installing genuine Hitachi parts in their vehicle. To ensure the best fit and performance for your 2001 S4, Advance Auto Parts carries a full inventory of 1 Hitachi Fuel and Emissions Systems. Plus you will be keeping your Audi in peak condition while saving money because prices on these Hitachi Fuel and Emissions Systems range up to $161.99, plus, with more than 2 customer reviews and an impressive 4.5 stars average rating, you can be confident the Fram Fuel and Emissions Systems below will deliver on both quality and value.

from $161.99

(2)

Mass Air Flow Sensor

“I’m an Audi/VW guru and if you own one of these you know how important it is to get OEM parts. Especially when it comes to the MAF. I just wanted to”

FAQs for 2001 Audi S4 Fuel and Emissions Systems

Which Fuel and Emissions Systems are best-sellers for 2001 Audi S4s?

Out of 23 Fuel and Emissions Systems that fit 2001 Audi S4s, the following parts are the top sellers:

Fuel Injector O-Ring Kit (3504360) – $8.49
Fuel Injector Seal Kit (11450392) – $8.99
Fuel Tank Cleaning Kit (11692237) – $12.49

What’s the price range for 2001 Audi S4 Fuel and Emissions Systems?

Fuel and Emissions System prices for the 2001 Audi S4 start at $8.49 and go up to $245.99 for the most premium parts.

What’s the average price of a Fuel and Emissions System for a 2001 Audi S4?

The average price for Fuel and Emissions Systems for the 2001 Audi S4 is $64.84. Keep in mind the variety of part types within our Fuel and Emissions System category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Fuel and Emissions Systems for other Audi S4 model years?

Yes, we currently carry Fuel and Emissions Systems for 25 model years of Audi S4s between 1992 and 2025. Fuel and Emissions Systems are bought most frequently for the following model years: 2023, 2022, 2021, 2020, 2019, 2018, 2016, 2015, and 2014.

What are the cheapest Fuel and Emissions Systems for my 2001 Audi S4?

The cheapest 2001 Audi S4 Fuel and Emissions Systems we carry in stock are:

Fuel Injector O-Ring Kit (3504360) – $8.49
Fuel Injector Seal Kit (11450392) – $8.99
Fuel Injector Seal Kit (10981517) – $8.99
Fuel Tank Cleaning Kit (11692237) – $12.49
Non-Locking Fuel Tank Cap (18481526) – $12.99

What are the top-rated Fuel and Emissions Systems that fit the 2001 Audi S4?

Out of 522 reviews by customers, our 2001 Audi S4 Fuel and Emissions Systems have an average customer rating of . These are some of the highest-rated Fuel and Emissions System types for the 2001 Audi S4 and their top-rated products:

Oxygen Sensors
- Oxygen Sensor: 4 Wire, 24.92" Long, Heated, Universal (18730541) – $92.99
- Oxygen Sensor: 4 Wire, 66.34" Long, Heated, Exact Fit (10182774) – $134.99

What types of Fuel and Emissions Systems do you sell for my 2001 Audi S4?

As of 11/2/25, these are some of the most in-demand types of Fuel and Emissions Systems for a 2001 Audi S4:

Can I get help with 2001 Audi S4 Fuel and Emissions System orders?

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

What is your return policy for Audi S4 Fuel and Emissions Systems?

Advance Auto Parts keeps returns simple. For new Audi S4 Fuel and Emissions Systems and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

2001 Audi S4 Fuel and Emissions Systems

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

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

Carquest Premium – Locking Fuel Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10505)

Carquest Premium – Keyed Alike Locking Fuel Cap (Part No.17597)

Wells Vehicle Electronics – Fuel Injection Pressure Regulator (Part No.5G1368)

Delphi – Fuel Injection Pressure Regulator (Part No.FP10312)

Bosch – Oxygen Sensor: 3 Wire, 47.83" Long, Heated, Exact Fit (Part No.13957)

Bosch – Oxygen Sensor: 3 Wire, 28.54" Long, Heated, Universal (Part No.15735)

ACDelco – Fuel Injector Fuel Feed and Return Pipe O-Ring Kit with 8 O-Rings (Part No.217-3365)

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

Carquest Premium – Fuel Cap Tester Adapter: (Part No.12426)

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

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

ACDelco – Multi-Purpose Pigtail (Part No.PT2164)

Carquest Premium – Air Charge Temperature Sensor (Part No.WTA1883)

Carquest Premium – Engine Crankcase Suction Pump (Part No.EGC1282)

Hitachi – Mass Air Flow Sensor (Part No.MAF0036)

Cardone – Remanufactured Mass Air Flow Sensor (Part No.74-10120)

Delphi – Mass Air Flow Sensor (Part No.AF10695)

Delphi – Fuel Pump Module Assembly: With Float Arm (Part No.FG1634)

Delphi – Electric Fuel Pump: With Hose Clamps & Piece, Isolator, Seals, Terminal Hardware (Part No.FE0039)

Continental – Fuel Pump Module Assembly (Part No.A2C53103692Z)

Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA1106)

Carquest Premium – Ambient Air Temperature Sensor (Part No.WTA2018)

Rein – Thermo Switch (Part No.ELT0059)

Carquest Premium – Multi-Use Connector (Part No.ABA3461)

Carquest Premium – Multi-Use Connector (Part No.PTA1104)

Carquest Premium – Locking Fuel Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10505)

Carquest Premium – Non-Locking Fuel Tank Cap (Part No.10835)

Motorad – Tethered Fuel Cap (Part No.MGC835T)

Delphi – Fuel Pump Module Assembly: Without Float Arm (Part No.FG1408)

Carquest Premium – Fuel Cap Tester Adapter: (Part No.12427)

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

Carquest Premium – Multi-Use Connector (Part No.PTA1104)

Carquest Premium – Multi-Use Connector (Part No.ABA3461)

ACDelco – Multi-Purpose Pigtail (Part No.PT2164)

Rein – Thermo Switch (Part No.ELT0059)

Carquest Premium – Air Charge Temperature Sensor (Part No.WTA1883)

Bosch – Oxygen Sensor: 4 Wire, 24.92" Long, Heated, Universal (Part No.15733)

Bosch – Oxygen Sensor: 4 Wire, 66.34" Long, Heated, Exact Fit (Part No.16073)

Hitachi – Mass Air Flow Sensor (Part No.MAF0036)

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

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

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

Carquest Premium – Mass Air Flow Sensor (MAF) – 100% NEW (Part No.MQ7281)

Delphi – Mass Air Flow Sensor (Part No.AF10149)

Delphi – Fuel Injection Pressure Regulator (Part No.FP10312)

Wells Vehicle Electronics – Fuel Injection Pressure Regulator (Part No.5G1368)