AUDI 671-50573 Coolant Reservoir Diesel Ac 3.0

( Model: Q5-AUDI ), ( Part Type: Ac ), ( Conditions Options: Ac ), ( Genuine Oem: Yes ), ( Ipn: 671-50573 ), ( Descriptionpartcondition: 3.0 Liter Diesel Ac )

Review AUDI Coolant Reservoir 3.0 Liter Diesel Ac fits Q5 2014–2016

The **Audi 671-50573 Coolant Reservoir** is a precision-engineered component designed exclusively for the **3.0L TDI diesel models of the Audi Q5 (2014 2016)** with air conditioning (AC), ensuring optimal thermal management and long-term reliability under demanding driving conditions. Crafted from high-quality **polypropylene**, this reservoir is built to withstand extreme temperature fluctuations, from the freezing cold of winter to the intense heat generated by the diesel engine s turbocharged performance. Its sleek, black exterior not only enhances the vehicle s aesthetic continuity but also provides a durable finish resistant to UV degradation and chemical corrosion, extending its lifespan even in harsh environmental conditions.

This coolant reservoir plays a critical role in the **closed-loop cooling system** of the Q5, housing excess coolant when the engine is hot and releasing it back into the system as temperatures drop, preventing overheating and maintaining consistent engine performance. The **671-50573** is a direct-fit replacement, meticulously calibrated to match Audi s original specifications, including the precise **capacity and pressure rating** required for the 3.0L TDI s cooling circuit. Its **threaded mounting points** ensure a secure, leak-free installation, while the integrated **overflow tube** guarantees proper coolant circulation, reducing the risk of airlocks and pump strain.

For diesel enthusiasts and Audi owners seeking **uncompromising quality**, this reservoir is a must-have upgrade or replacement part, offering peace of mind with its **OEM-level durability and compatibility**. Whether addressing a worn-out original component or proactively maintaining the vehicle s cooling system, the **671-50573** delivers the reliability expected from Audi s engineering standards, ensuring your Q5 remains efficient, protected, and ready for both city commutes and long-distance adventures.

**Pros and Cons of buying a Audi 671-50573 Coolant Reservoir (2014-2016 Q5 3.0 TDI with A/C)**

1. **Direct Fitment and Compatibility** This part is specifically designed for the 2014-2016 Audi Q5 3.0 TDI models with air conditioning, ensuring an exact match in terms of size, shape, and mounting points. Avoiding mismatches reduces the risk of leaks or improper installation.

2. **Prevents Coolant System Issues** A faulty or damaged coolant reservoir can lead to overheating, coolant leaks, or even engine damage. Replacing it proactively maintains the integrity of the cooling system, which is critical for the longevity of the 3.0 TDI engine.

3. **Easier Maintenance Access** The reservoir is a relatively straightforward component to replace, especially if you have basic mechanical skills. It requires minimal tools and can often be done without specialized equipment, saving on labor costs if you re comfortable with DIY repairs.

4. **Prevents A/C System Contamination** Since this part is associated with the A/C system, ensuring it s in good condition helps maintain proper refrigerant circulation and prevents coolant from mixing with A/C fluids, which could damage the system over time.

5. **Cost-Effective Compared to Engine Damage** Replacing a coolant reservoir is a small investment compared to the potential cost of repairing engine damage caused by overheating. The 3.0 TDI is a robust engine, but it is not immune to coolant-related failures.

6. **Improves Cooling Efficiency** A properly functioning reservoir helps regulate coolant pressure and flow, ensuring the engine stays within optimal operating temperatures, which is especially important for diesel engines that generate more heat than gasoline counterparts.

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1. **Potential Counterfeit Parts** Purchasing from untrusted sellers (especially online marketplaces) may result in counterfeit or low-quality parts. These could fail prematurely, leading to repeated replacements and frustration. Always buy from reputable suppliers or dealerships.

2. **Mismatched Materials or Seals** Some aftermarket reservoirs may use inferior materials or seals that degrade faster than OEM parts. This could lead to leaks or cracks over time, requiring another replacement sooner than expected.

3. **Limited Availability of OEM Parts** While this part is common, OEM (Original Equipment Manufacturer) versions may not always be readily available from all sellers. Some buyers opt for high-quality aftermarket alternatives, which may not always match the durability of genuine Audi parts.

4. **Installation Challenges** If the reservoir is cracked or warped from previous damage, removing it may be difficult, especially if it s stuck due to coolant residue or corrosion. This could require additional cleaning or lubrication during installation.

5. **Price Variability** Prices for this part can vary significantly depending on the seller, brand, and whether it s new or refurbished. Overpaying for a part that doesn t offer significant added value is a common pitfall when shopping online.

6. **Risk of Incorrect Specifications** Some sellers may mislabel parts, leading to confusion. For example, a reservoir meant for a 2.0 TDI might not fit a 3.0 TDI, or a version without A/C compatibility could cause issues with the cooling system s pressure balance.

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The **Audi 671-50573 coolant reservoir** is a critical yet often overlooked component for maintaining the health of your 2014-2016 Q5 3.0 TDI with A/C. The **pros outweigh the cons** if you prioritize reliability, proper fitment, and long-term engine protection. The main risks counterfeit parts, installation difficulties, or mismatched specifications can be mitigated by purchasing from trusted sources (such as Audi-approved dealers, reputable online retailers, or verified eBay sellers) and ensuring the part is genuine.

If you re experiencing **coolant leaks, overheating, or warning lights related to the cooling system**, replacing this reservoir is a wise preventive measure. For those performing routine maintenance, it s also a good practice to inspect and replace it as part of a coolant flush or general service.

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1. **Buy from a Trusted Source** Opt for an **OEM Audi part** or a **high-quality aftermarket brand** (e.g., Mann Filter, Febi Bilstein, or Denso) from a seller with verified reviews. Avoid suspiciously cheap deals that may indicate counterfeit goods.

2. **Verify Part Compatibility** Double-check that the part number (671-50573) matches your vehicle s specifications, including the **3.0 TDI engine and A/C system**. Confirm the year and trim to ensure no variations exist.

3. **Consider Professional Installation** If you re unsure about the installation process or lack the necessary tools, have a mechanic perform the replacement. Proper sealing and pressure testing are essential to avoid leaks.

4. **Replace as Part of a Coolant Service** If you re already flushing the coolant system, replace the reservoir at the same time. This ensures you re not introducing old coolant into a new reservoir, which could lead to contamination.

5. **Monitor Post-Installation** After replacement, keep an eye on the coolant level and check for leaks. If you notice any issues (e.g., overheating, coolant loss), address them promptly to avoid further damage.

**Final Verdict:** This is a **worthwhile purchase** for maintaining your Q5 s cooling system, provided you source the part carefully. The long-term benefits of preventing overheating and engine stress far outweigh the minor risks if executed correctly.

Details:

GOOD USED PART This is a good tested used part. Product Title: 14-16 Audi Q5 Coolant Reservoir 3.0 Liter Diesel AC. If you are looking for a good, used guaranteed item this is the one. AUDI Q5 14-16 3.0L, diesel.

Part Detail see Help. Model Q5 AUDI. Vehicle has collision damage but the items was untouched in accident. This is a nice used part ready to be installed in your vehicle.

Notes 3.0L DIESEL,AC 2/4/2023.

specifications ocoosys:

• for makes: Audi
• for years: 2014-2016
• model: Q5-audi
• part type: Ac
• conditions options: Ac
• genuine oem: Yes
• ipn: 671-50573
• descriptionpartcondition: 3.0 Liter Diesel Ac

offer ocoosys:

• availability: In Stock
• started: February 24, 2026
• sold: 0
• quantity: 1
• options: Ship-to-home

general ocoosys:

• condition: Used
• Car Truck Parts Accessories > Engine Cooling Components > Radiators

returns ocoosys:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

seller ocoosys:

• # reviews: 7020
• city: Lynn, Massachusetts
• rating: 99.0%

shipping ocoosys:

• type: Fixed
• service: UPS Ground
• cost: $0.00
• carrier: UPS
• class: Standard
• transit: 3-7 Days

payments ocoosys:

• wallet: Paypal
• credit card: Discover
• other

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