2020 Audi A4 Quattro Fuel and Emissions Systems

NTK is the world’s largest supplier and manufacturer of OEM oxygen sensors. Oxygen sensors play a critical role as part of the vehicle’s on-board diagnostic system in maintaining optimal engine performance, maximizing fuel efficiency and reducing harmful emissions. While conventional switching oxygen sensors only switch rich or lean, wideband oxygen (or Air-Fuel Ratio) sensors produce a linear output signal that allows the ECU determine exactly how rich or lean an engine is running and make continuous and precise adjustments of the air-fuel mixture to stay closest to stoichiometric, providing the best possible combustion and fewest emissions. A ceramics company at our core, NTK uses state-of-the art technology enabling complete control of the ceramics used in our wideband oxygen sensors from raw material to finished product. Trust The Sensor Specialist for full-line market support and OE application technology.

Product Features:

• OEM QUALITY: NTK is the world’s largest supplier of original equipment oxygen sensors with renowned quality that meets or exceeds OEM specifications
• PRODUCT ENGINEERING: Based on OE expertise, but specifically engineered for the aftermarket, NTK Oxygen Sensors offer superior OE fit, form, function
• OE TECHNOLOGY: Upgraded to the latest OE technologies, NTK Oxygen Sensors are designed to reduce OE failures, enhance durability and performance
• EXTENSIVE TESTING: OE development includes vibration and thermal shock testing. Testing during manufacturing guarantees quality and reliability
• EASY INSTALLATION: NTK Oxygen Sensors are equipped with OE specified, water-resistant connectors and harness accessory hardware for easy installation
• ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning
• NTK ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability

ACERA’s patented Oxygen / Lambda sensor technology is crafted with the highest precision an designed to endure the toughest environment in the vehicles exhaust system. ACERA has over 20 years of experience in research, and developing, Oxygen Sensors and is one of the few manufacturers in the world that actually integrates the Zirconium Oxide ceramic technology directly into the sensor’s core. Starting with the research and development to formulate the YSZ powder, ACERA then integrates the patented Zirconium Oxide (ZrO2) ceramic center core producing a highly durable, long lasting oxygen sensor that provides a much quicker time to operational temperature with minimal variation. To ensure the highest quality and stability, every new oxygen sensor undergoes a pressurized sealing test as well as a multifunction simulated exhaust bench test.

Product Features:

• Premium OE Connector
• Premium stainless steel body protecting against extreme heat and corrosion
• Double layer protection for added durability and long life
• Monolithic ceramic element allowing faster operating temperature
• Aluma element surface minimizing thermal variation
• Aluma protection layer that protects the sensor catalyst from harmful gas
• Isolated circuitry that reduces signal noise
• Patented Zirconium Oxide (ZrO2) material
• 100% inspection and testing of product functions on every sensor

Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

Carquest premium engine management products provide the right products for a wide range of domestic and import applications. Delivering the highest performance and durability under demanding conditions.

All Bosch High Pressure Sensors provide very reliable and accurate measurements and have extremely fast response times to ensure your vehicle runs as intended.

Product Features:

• Built-in circuit protection to ensure your electronics and computer systems stay unharmed
• High reliability of pressure sensing proved in gasoline and diesel direct injection systems
• Sturdy design, vibration resistant and thermal stability

Original Equipment Manifold Absolute Pressure/Manifold Air Temperature Sensors are designed to perform in harsh environments such as extreme temperatures and vibration, thermal and mechanical shock. The Original Equipment Manifold Absolute Pressure sensor is the ORIGINAL part, supplied in a plain box, with the car manufacturer’s logo on the part.

Product Features:

• Designed for under-hood environments
• All-silicon, solid-state microelectronic technology
• Temperature compensation
• Electromagnetic interference (EMI) protection
• Air temperature output

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

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

Hitachi Automotive Systems manufactures and markets engine management, electric powertrain, drive control, and car information systems for major automotive original equipment manufacturers worldwide. As a part of the fuel delivery system, the fuel pump is the bloodline of a vehicle, sending a constant supply of pressurized fuel from the tank to the fuel injector. The pump creates positive pressure in the fuel lines, pushing fuel to the engine. Rely on Hitachi OE fuel pumps to disperse fuel accurately and meet optimal horsepower requirements for the modern vehicle!

Product Features:

• Constant and pressurized supply of fuel
• Accurate fuel dispensing
• Fuel flow meets the optimal horsepower requirements of modern vehicles
• OE quality and reliability

Hitachi’s High Pressure Fuel Pumps (HPPs) are designed to enhance fuel volume delivery for exceptional operation and faster vehicle response. Our HPPs are a good alternative to the standard fuel pump for direct injection, supercharged, and turbocharged applications commonly found in todays vehicles. Pump housing is made of high strength aluminum to ensure durability while keeping weight low. Precision machined surfaces prevent fuel leakage/pressure drop while chemical resistant seals prevent premature wear from ethanol mixed fuels. Designed to meet the exact needs of each specific vehicle, Hitachi’s High Pressure Fuel Pumps 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:

• These quality High Pressure Pumps provide exceptional operation with enhanced fuel volume delivery and faster vehicle response. Promotes a rise of fuel pressure from startup; reduces current consumption.
• Hitachi is a Tier 1 OE supplier for high pressure fuel pumps
• 100% NEW, never remanufactured
• Meets the OE performance and durability standards for this application
• High strength aluminum housing for light weight and durability
• Chemical resistant seals prevent premature wear from ethanol mixed fuels
• Precision machined surfaces prevent fuel leakage and subsequent pressure drop
• O-Ring/Gaskets included when applicable

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

Fuel Injector O-Ring

Bosch is one of the largest global suppliers of automotive products, developing, manufacturing and supplying precision OE components and systems to vehicle manufacturers and the automotive aftermarket. This 5-piece kit contains 3 O-rings (black), 1 support ring (gray), and 1 protective cap (yellow). Use one kit per injector.

All Bosch High Pressure Sensors provide very reliable and accurate measurements and have extremely fast response times to ensure your vehicle runs as intended.

Product Features:

• Built-in circuit protection to ensure your electronics and computer systems stay unharmed
• High reliability of pressure sensing proved in gasoline and diesel direct injection systems
• Sturdy design, vibration resistant and thermal stability

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
• 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

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

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

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

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.

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

Product Features:

• OEM QUALITY: NTK is the world’s largest supplier of original equipment oxygen sensors with renowned quality that meets or exceeds OEM specifications
• PRODUCT ENGINEERING: Based on OE expertise, but specifically engineered for the aftermarket, NTK Oxygen Sensors offer superior OE fit, form, function
• OE TECHNOLOGY: Upgraded to the latest OE technologies, NTK Oxygen Sensors are designed to reduce OE failures, enhance durability and performance
• EXTENSIVE TESTING: OE development includes vibration and thermal shock testing. Testing during manufacturing guarantees quality and reliability
• EASY INSTALLATION: NTK Oxygen Sensors are equipped with OE specified, water-resistant connectors and harness accessory hardware for easy installation
• ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning
• NTK ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability

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

Product Features:

• Premium Bosch oxygen sensors are designed to improve fuel economy while reducing harmful emissions
• 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

Walker Oxygen Sensors are precision made for outstanding performance and manufactured to meet and exceed all original equipment specification and test requirements.

Product Features:

• Improved Engine Response and Performance
• Lower Emissions
• Improved Fuel Economy
• Longer Sensor Life
• Meets OEM Specifications Installation Notes: Vehicles equipped with Air Fuel Ratio Sensors may look very similar to the Oxygen Sensor. Please confirm the correct part before ordering and if the connector does not match, do not install

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

Product Features:

• OEM QUALITY: NTK is the world’s largest supplier of original equipment oxygen sensors with renowned quality that meets or exceeds OEM specifications
• PRODUCT ENGINEERING: Based on OE expertise, but specifically engineered for the aftermarket, NTK Oxygen Sensors offer superior OE fit, form, function
• OE TECHNOLOGY: Upgraded to the latest OE technologies, NTK Oxygen Sensors are designed to reduce OE failures, enhance durability and performance
• EXTENSIVE TESTING: OE development includes vibration and thermal shock testing. Testing during manufacturing guarantees quality and reliability
• EASY INSTALLATION: NTK Oxygen Sensors are equipped with OE specified, water-resistant connectors and harness accessory hardware for easy installation
• ADVANCED CERAMIC SENSOR ELEMENT: 3-stage contaminant-resistant plasma jet and deposit trap overcoat protects against element poisoning
• NTK ADVANTAGE: Superior dual-coated platinum interface and thinner ceramic element produces fastest light off and response times with best durability

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

Product Features:

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