BUYAUTOPARTS 19-90940AN Engine Coolant Reservoir 193332019892 11990940-101

( Brand: Buyautoparts ), ( Manufacturer Part Number: 19-90940AN ), ( Part Type: Engine ), ( Manufacturer Warranty: 1 Year ), ( Ipn: 11990940-101 ), ( California Prop 65 Warning: Prop65 Warning ), ( UPC: 193332019892 )

Review BUYAUTOPARTS Bmw Engine Coolant Reservoir fits 323I 325XI 325CI 330I 328I X3 Z4 1999–2011

The **BuyAutoParts 19-90940AN** is a high-quality, direct-fit **engine coolant reservoir** designed specifically for BMW models spanning from **1999 to 2011**, including the **323i, 325xi, 325ci, 330i, 328i, X3 (E83), and Z4 (E85/E89)**. This essential component plays a critical role in maintaining optimal engine temperature by storing and circulating coolant through the vehicle s radiator and cooling system. Crafted from durable **polypropylene**, a material known for its resistance to heat, chemicals, and corrosion, this reservoir ensures long-lasting performance even under demanding driving conditions. Its precise fitment eliminates the need for modifications, making installation straightforward for both professional mechanics and DIY enthusiasts. The reservoir features a **clear plastic design**, allowing for easy visual inspection of coolant levels, while its robust construction prevents leaks and ensures proper pressure regulation within the cooling system. Whether you're performing routine maintenance, addressing a coolant leak, or upgrading your BMW s cooling system, this **OEM-quality replacement part** delivers reliability and compatibility with the original equipment specifications. Trusted by BMW owners for its seamless integration and dependable functionality, the **19-90940AN** is the ideal choice for restoring or maintaining peak cooling efficiency in your vehicle.

### **Pros and Cons of buying a BuyAutoParts 19-90940AN Engine Coolant Reservoir for BMW Models (1999 2011)**

1. **Direct Fitment** The part is specifically designed for BMW models from 1999 to 2011, including the 323i, 325xi, 325ci, 330i, 328i, X3, and Z4. This ensures compatibility without requiring modifications.

2. **High-Quality Material** BuyAutoParts is known for using durable materials that resist cracking, warping, or degradation over time, which helps maintain proper coolant system function.

3. **Easy Installation** The reservoir is designed for straightforward replacement, requiring only basic tools. Most DIY mechanics can install it without professional assistance.

4. **Cost-Effective** Compared to OEM (Original Equipment Manufacturer) parts, this aftermarket reservoir is typically more affordable while still meeting performance standards.

5. **Widely Available** The part is stocked by multiple online and offline retailers, making it easy to purchase even if you need it urgently.

6. **Compatibility with Common Coolants** The reservoir works with standard BMW-approved coolant blends, ensuring long-term reliability if the system is properly maintained.

7. **Prevents Overheating Risks** A functioning coolant reservoir helps regulate engine temperature, reducing the risk of overheating, which can cause severe engine damage.

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1. **Aftermarket vs. OEM Quality Concerns** While generally reliable, some users report that aftermarket parts may not match the exact tolerances or longevity of OEM components. However, BuyAutoParts has a strong reputation for quality control.

2. **Potential for Counterfeit Parts** Purchasing from unauthorized sellers (e.g., third-party marketplaces) could result in counterfeit or low-quality fakes. Always buy from verified retailers.

3. **Limited Warranty** Unlike OEM parts, aftermarket reservoirs may come with shorter or no warranties, meaning you bear full responsibility for defects.

4. **Compatibility with Modified Systems** If your BMW has been heavily modified (e.g., forced induction, custom cooling setups), the reservoir may not integrate perfectly, requiring additional adjustments.

5. **Risk of Leaks Over Time** Some users report that plastic reservoirs can develop hairline cracks or leaks after prolonged use, especially in extreme temperatures. Regular inspection is recommended.

6. **Mismatched Color or Finish** The aftermarket part may not match the exact color or finish of the original, though this is purely cosmetic and does not affect performance.

7. **Dependence on Proper Installation** If not installed correctly (e.g., improper sealing, incorrect hose connections), it could lead to coolant leaks or system inefficiencies.

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### **Conclusion**

The **BuyAutoParts 19-90940AN engine coolant reservoir** is a **reliable and cost-effective replacement** for the specified BMW models, offering direct fitment and high durability. While it is not an OEM part, its quality is generally trustworthy, especially when purchased from a reputable seller. The main drawbacks potential counterfeit risks, limited warranties, and long-term wear can be mitigated by buying from authorized sources and performing regular maintenance.

For most drivers, this part is a **solid choice** for a replacement reservoir, balancing affordability with performance. However, if budget allows and you prioritize long-term reliability, an **OEM or high-end aftermarket alternative** (e.g., from Mann Filter or ACDelco) may be preferable.

- **Buy from a trusted seller** (e.g., BuyAutoParts official website, Amazon, or a local BMW parts specialist) to avoid counterfeit products.

- **Inspect the reservoir** upon arrival for cracks, leaks, or damage before installation.

- **Use a high-quality coolant** (BMW-approved or a synthetic blend) to maximize the part s lifespan.

- **Monitor the system** for leaks or performance issues in the first few months after installation.

- **Consider an OEM or premium aftermarket option** if you frequently drive in extreme conditions or have a modified engine.

For the average BMW owner, this part is **a practical and well-suited replacement** for the given models.

Details:

Part Number:19-90940AN. Premium Parts: All parts are premium ISO/TS 16949 quality. Technical Specifications: Part Type:Engine Coolant Reservoir. Tested and Approved: Each part is run through rigorous testing before it leaves the factory.

This Engine Coolant Reservoir is manufactured and tested to the strictest OE car truck standards for unparalleled performance. Brand:BuyAutoParts. Built for trouble-free ownership and 100% visually inspected quality tested, this Engine Coolant Reservoir is backed by our satisfaction guarantee. Condition: NEW.

Buyautoparts For BMW 323I 325XI 325Ci 330I 328I X3 Z4 1999 2011 Engine Coolant Reservoir: Easy Install: OEM fit and finish for easy installation. Vehicle Fitment.

part #: 1990940an price

• $55.41

specifications ocoosys:

• for models: 323i, 325xi, 325ci, 330i, 328i, X3, Z4
• for makes: Bmw
• for years: 1999-2011
• brand: Buyautoparts
• mpn: 19-90940an
• part type: Engine
• manufacturer warranty: 1 Year
• ipn: 11990940-101
• california prop 65 warning: Prop65 Warning
• upc: 193332019892

seller ocoosys:

• rating: 98.7%
• city: Hebron, Kentucky
• # reviews: 85123

offer ocoosys:

• availability: In Stock
• quantity: 8
• sold: 0
• options: Ship-to-home
• started: May 3, 2026

payments ocoosys:

• credit card: Discover
• other
• wallet: Paypal

general ocoosys:

• Car Truck Parts Accessories > Engine Cooling Components > Other Engine Cooling Components
• condition: New

shipping ocoosys:

• cost: $11.45
• service: Standard, Expedited, Overnight
• type: Fixed
• class: Standard, Expedited, One-day
• transit: 3-6 Days

returns ocoosys:

• paid by: Seller
• policy: Returns Accepted
• time: 60 Days

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