2001 Audi A4 Engine Cooling Parts

Rein Automotive OE quality thermostat inserts install, fit and perform the way the original manufacturer intended. This ensures a smooth and easy installation, just as one would expect to find with OE quality. These inserts are designed to meet or exceed the OE materials used. Rein thermostats are produced with high-quality metals and components to ensure proper durability and service life. The thermostats are temperature calibrated to have a consistent and precise response suiting cooling system needs. Our quality thermostat inserts aim to provide the profession repair technician and vehicle owner peace of mind and trust that is expected from an OE quality component.

Product Features:

• Matches original equipment design specifications
• All gaskets or seals necessary for installation are supplied with thermostats
• Manufactured to strict engineering standards/specifications in materials and tolerances
• Thermostat set to 95 degrees Celsius to maintain optimal running temperature

For European vehicles, A.P.A. manufactures the URO Parts brand of quality replacement parts, which meet or exceed OEM specifications. URO Parts components are ideal for both professional and DIY vehicle repair, and are often the exclusive aftermarket alternative to overpriced ¿Genuine¿ components. By reducing deferred maintenance with URO Parts, you will increase the bottom line of your business. With its URO Premium line, A.P.A. offers problem-solving upgraded components that are superior to failure-prone OEM parts in design and/or materials. A.P.A. is so confident in the longevity and reliability of URO Premium products, . URO Parts also specializes in accurate reproduction parts for classic vehicles, including a huge variety of items that are no longer available from the dealer.

Product Features:

• Guaranteed fitment
• Precision-molded to OE dimensions to ensure compatibility with original sensors and connections
• Quality materials resist engine heat and harsh cooling system environment
• Factory pressure-tested

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.

Advance Auto Parts is proud to carry comparable exact-fit parts from multiple vendors, as such, the item you receive may be one of two quality brands. Both brands meet the same fitment requirements and are equal in their performance and specifications. The fan clutch is the component of the cooling system that varies the fan speed to meet the cooling needs of the engine. The fan clutch provides high airflow volume and, by only operating the fan as needed, promotes good fuel economy. Carquest fan clutches are designed to meet OE performance specifications.

Product Features:

• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation
• Designed, tested, and built by application
• OE performance, fit, and appearance
• Precision machined
• Out of box installation

Cracked or lost the original engine coolant reservoir cap- Replace it seamlessly and effectively with this precisely engineered, direct replacement cap.

Product Features:

• Direct replacement – this engine coolant reservoir cap directly replaces a cracked or lost original cap
• Application specific – made to match dimensions of reservoir cap on only certain vehicle years, makes and models
• Seamless fit – reverse-engineered from the original equipment to fit perfectly
• Excellent value – a quick, easy replacement that’s less expensive than going back to the dealership

Carquest Premium Thermostat Housings are manufactured with OEM quality materials and safety standards by an OE Supplier. This housing will meet and exceed the expectations of the OE thermostat to insure the best product for your cooling system. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. The construction of this housing is improved over the OE design to fix and update any issues that the OE design may have had.

Product Features:

• Easy, one step fit and installation
• No special tools required
• Meets or exceeds all OEM standards

Beck/Arnley parts meet foreign nameplate OE specifications for form, fit and function. Our product specialists work with a network of global sourcing partners so you can install the right part with confidence.

Product Features:

• Matches OE form, fit and function
• Made from premium materials for durability
• Designed for underhood conditions
• Packaged in clear plastic for easy visibility and identification of all components
• Application specific for this vehicle

We are proud to offer this Carquest product line: Carquest Water Outlets. Our products are engineered and tested to provide years of trouble free operation and designed to be hassle free OE replacement part that meets and/or exceeds OE standards. Backed by over 50 years of mobile temperature control experience, fix it once and fix it right with CARQUST Water Outlets and Thermostat Housings.

Product Features:

• Meets and/or exceeds OEM standard
• Direct-fit replacement for ease of installation
• 100% leak tested
• Meets and/or exceeds OEM standard
• 100% leak tested
• Direct-fit replacement for ease of installation

For European vehicles, A.P.A. manufactures the URO Parts brand of quality replacement parts, which meet or exceed OEM specifications. URO Parts components are ideal for both professional and DIY vehicle repair, and are often the exclusive aftermarket alternative to overpriced ¿Genuine¿ components. By reducing deferred maintenance with URO Parts, you will increase the bottom line of your business. With its URO Premium line, A.P.A. offers problem-solving upgraded components that are superior to failure-prone OEM parts in design and/or materials. A.P.A. is so confident in the longevity and reliability of URO Premium products, . URO Parts also specializes in accurate reproduction parts for classic vehicles, including a huge variety of items that are no longer available from the dealer.

Product Features:

• Guaranteed fitment
• Hose Flange is manufactured to OE dimensions for easy bolt-on installation and reliable hose connections
• High-quality composite material (part numbers ending in “PRM” are aircraft-quality aluminum) resists warping or cracking that leads to dangerous coolant leakage

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.

Carquest Premium Radiators offer one of the largest product ranges in the aftermarket, covering more than 95% of the popular automotive and light truck applications. Carquest Premium Radiators meet or exceed original equipment specifications, ensuring that products fit and perform just as well or better than the original parts, providing you peace of mind.

Product Features:

• Our B-type tubes feature central reinforcement to provide greater tolerance to pressure. Stronger tube design means drastically reduced probability of tube failure.
• Our deep extrusion header provides a stronger tube to header joint which is more resistant to the effects of vibration and thermal tube expansion, virtually eliminating tube to header leaks.
• Our fin edges are folded for increased stability and heat disbursement properties.
• Our included “multi-fit” attachments allow one radiator to cover multiple vehicle applications without sacrificing OE fit. This results in wider vehicle coverage with substantially less inventory.
• Thermal expansion cuts allow for longer life and reduce failure rates by allowing improved core expansion and contraction during normal heat cycles.
• We design and manufacture all our radiators to meet or even exceed Original Equipment specifications. We take pride in producing the most reliable replacement parts in the market.
• We use longer header tabs for increased pressure resistance. This reduces the potential for tank to header leaks.

Carquest Premium Radiators offer one of the largest product ranges in the aftermarket, covering more than 95% of the popular automotive and light truck applications. Carquest Premium Radiators meet or exceed original equipment specifications, ensuring that products fit and perform just as well or better than the original parts, providing you peace of mind.

Product Features:

• Our B-type tubes feature central reinforcement to provide greater tolerance to pressure. Stronger tube design means drastically reduced probability of tube failure.
• Our deep extrusion header provides a stronger tube to header joint which is more resistant to the effects of vibration and thermal tube expansion, virtually eliminating tube to header leaks.
• Our fin edges are folded for increased stability and heat disbursement properties.
• Our included “multi-fit” attachments allow one radiator to cover multiple vehicle applications without sacrificing OE fit. This results in wider vehicle coverage with substantially less inventory.
• Thermal expansion cuts allow for longer life and reduce failure rates by allowing improved core expansion and contraction during normal heat cycles.
• We design and manufacture all our radiators to meet or even exceed Original Equipment specifications. We take pride in producing the most reliable replacement parts in the market.
• We use longer header tabs for increased pressure resistance. This reduces the potential for tank to header leaks.

Carquest Premium coolant temperature sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry, Carquest Premium coolant temperature sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. Carquest Premium coolant temperature sensors and switches are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered and tested by world-class manufacturers to ensure a reliable and long-lasting repair.

Product Features:

• Designed to meet or exceed OE specifications for fit, form and function
• 100% factory resistance calibrated to ensure precision tolerances, resulting in extremely accurate temperature for optimal performance
• OE precision matched thermistor ensuring Carquest sensors match OE output resistances across all temperature positions
• O-rings, seals or thread sealant are included if required
• Weather-tight connectors prevent leaks and corrosion for longer life
• Extensive design validation testing and 100% end-of-line tested
• Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

Approved materials for increased durability in even the most extreme temperatures. All Carquest Coolant Temperature Sensors are designed to meet or exceed OEM specifications at our ISO TS16949 manufacturing facilities.

Product Features:

• 100% factory resistance calibrated to ensure precision tolerances, resulting in extremely accurate temperature for optimal performance
• Thread Sealant and/or O-ring pre-installed on applicable sensors to ensure leak free performance
• Brass sensor housing precision machined to meet or exceed OE thermal conductivity
• OE precision matched thermistor position for correct output parameters
• Extensive product testing includes salt spray, high/low temperature impact, thermal vibration, durability, static electricity, and micro tension, among other tests, to ensure all sensors meet or exceed OEM specifications.
• Extensive design validation testing and 100% end-of-line tested
• Carquest Vehicle Solutions Technical Support available from ASE certified technicians: 1-866-687-5413

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.

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

MAHLE® gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

Product Features:

• All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
• MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
• MAHLE gaskets is the leader in Domestic, Asian and European applications
• The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package

Carquest Premium Vehicle Solutions provides high-quality solutions for a wide range of applications. The Engine Cooling Fan Switch regulates the operation of the cooling fan based on engine temperature, preventing overheating and ensuring optimal engine performance by maintaining a safe operating temperature. Engineered for maximum performance and durability, our products are built to excel in even the most demanding conditions, ensuring reliable operation and long-lasting value.

Product Features:

• Durable Construction: Designed with high-quality materials to withstand harsh environmental conditions, ensuring long-lasting performance in extreme temperatures, vibrations, and moisture exposure.
• Precision Engineering: Accurate sensing and switching capabilities provide reliable performance, reducing the risk of malfunctions and improving vehicle safety and efficiency.
• Easy Installation & Maintenance: Designed for quick installation and minimal upkeep, reducing downtime and repair costs for both manufacturers and consumers.
• Fit/Form/Function: Each vehicle electronic component is engineered to meet or surpass OEM standards, ensuring precise fit, optimal functionality, and reliable performance.

The Carquest New Water Pump features all new, original equipment-quality components for proper fit and long-life performance. Each pump includes heavy-duty unitized bearings, pressed-on hubs, precision machined housings, unitized seals and optimal impeller clearance, plus all new water pumps are 100% factory tested to assure the highest quality product. Each unit is built to meet or exceed all Original Equipment specifications and is validated for fit, form, and function. Also, application specific design to ensure a perfect fit and correct operation for unsurpassed quality that you can trust.

Product Features:

• All gaskets or seals necessary for installation are supplied with pump
• Durable housing features precisely machined mounting surfaces for proper sealing
• Equipped with weep chamber or similar feature to help prevent unnecessary replacement
• Timing belt should be replaced with the pump
• This pump is driven by the timing belt
• Additional Notes: Includes gasket

Beck/Arnley parts meet foreign nameplate OE specifications for form, fit and function. Our product specialists work with a network of global sourcing partners so you can install the right part with confidence.

Product Features:

• Matches OE form, fit and function
• Heavy duty bearings, sealed and lubed for life
• Includes all necessary gaskets and seals needed for a complete installation
• Where applicable, metal and resin impellers are offered. See catalog to match pump to this vehicle
• Be sure to use the proper coolant to maximize cooling system components. See Beck/Arnley catalog for the coolant for this application.

High quality OE replacement part with all components needed to complete the job.

Product Features:

• Meets and/or exceeds OEM standard
• Includes quality gasket or O-ring  to ensure proper seal (where applicable)
• Includes quality gasket or O-ringá to ensure proper seal (where applicable)
• 100% virgin resin material to insure durability
• 100% leak tested
• Direct-fit replacement for ease of installation
• Includes quality thermostat
• Meets and/or exceeds OEM standard
• Includes quality gasket or O-ring to ensure proper seal (where applicable)
• 100% virgin resin material to insure durability
• 100% leak tested
• Direct-fit replacement for ease of installation

This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life.

Product Features:

• Ideal replacement – this engine coolant thermostat housing directly replaces the original housing on specified vehicle years, makes and models
• Durable construction – this part is specifically designed to withstand extreme temperature changes and resist cracking and leaking
• Cost-effective and reliable – offers original manufacturer quality at lower cost than getting replacement at dealer
• Industry-leading design – professionally engineered by the aftermarket leader in replacement thermostat housings

Tester adapter for the 9300 and MT-300 cooling system pressure testers. Professional grade test equipment to ensure an automotive cooling system is operating at the correct pressure. Made from high quality materials to ensure durability. Designed to test automotive coolant caps.

Product Features:

• Machined metal construction
• Works with MT-300 pressure tester
• Tests coolant caps
• Professional quality

This new pump is 100% tested to ensure the highest quality. Each unit is built to meet or exceed all OE specifications and is validated for fit, form, and function. Application specific design to ensure a perfect fit and correct operation for unsurpassed quality.

Product Features:

• Electric water pump
• Specialized for vehicles using supplemented cooling for the engine or components
• Plastic housing
• All components necessary for installation are supplied with pump

This new pump is 100% tested to ensure the highest quality. Each unit is built to meet or exceed all OE specifications and is validated for fit, form, and function. Application specific design to ensure a perfect fit and correct operation for unsurpassed quality.

Product Features:

• Built to meet or exceed OE fit, form and function
• All components necessary for installation are supplied with pump
• 100% tested for reliable performance

Rein Automotive OE quality auxiliary water pumps are fabricated from original casting specifications to ensure proper fit for easy installation, proper water flow and maximum cooling. Auxiliary water pump use high-quality plastic or metal construction to ensure durability and long service life. Our auxiliary water pumps aim to provide the professional repair technician and vehicle owner the peace of mind and trust that is expected from an OE quality component.

Product Features:

• High-quality plastic or metal construction
• Flow-rates matched to OE flow-rates
• Includes the vibration isolators, mounting brackets and hardware where applicable for easy installation