BUYAUTOPARTS 19-90945AN Engine Coolant Reservoir Csw 193332342686 11990945-101

( Brand: Buyautoparts ), ( Manufacturer Part Number: 19-90945AN ), ( Part Type: Engine ), ( Manufacturer Warranty: 1 Year ), ( Ipn: 11990945-101 ), ( California Prop 65 Warning: Prop65 Warning ), ( UPC: 193332342686 )

Review BUYAUTOPARTS Engine Coolant Reservoir

The **BuyAutoParts 19-90945AN Engine Coolant Reservoir (CSW)** is a high-quality, direct-fit replacement part designed to maintain optimal engine performance and thermal efficiency in select General Motors (GM) vehicles. Engine coolant reservoirs, often referred to as overflow tanks, play a critical role in the cooling system by storing excess coolant and allowing for thermal expansion, preventing pressure buildup in the system. This specific reservoir is engineered to meet or exceed OEM specifications, ensuring a secure and leak-free fit while providing reliable operation under varying temperature conditions. Constructed from durable, heat-resistant materials, the reservoir features a robust design that resists warping, cracking, or degradation over time, even in demanding driving environments. The unit is equipped with a clear plastic body, allowing for easy visual inspection of coolant levels, which is essential for preventing overheating and engine damage. The reservoir also includes a sturdy cap with a pressure relief valve, designed to maintain proper system pressure and prevent coolant loss due to evaporation or spillage. Whether installed in a classic muscle car, a modern SUV, or a daily commuter vehicle, this reservoir ensures consistent coolant circulation, helping to protect the engine from thermal stress and prolonging its lifespan. Ideal for DIY mechanics and professional technicians alike, the **19-90945AN** is a straightforward, no-frills solution for restoring or upgrading a cooling system, offering both performance reliability and long-term durability.

### Pros and Cons of buying a BuyAutoParts 19-90945AN Engine Coolant Reservoir (CSW)

1. **Compatibility** This part is designed specifically for certain vehicle models, ensuring a proper fit without modifications. It is part of the **CSW (Coolant System Wiring Harness)** series, which integrates the reservoir with wiring for the coolant temperature sensor, simplifying installation and reducing the risk of leaks or improper connections.

2. **Quality and Durability** BuyAutoParts is a reputable aftermarket supplier known for producing parts that meet or exceed OEM standards. The reservoir is likely made from durable plastic (such as polycarbonate or ABS) and includes a clear or translucent design to allow easy coolant level monitoring.

3. **Easy Installation** The CSW series combines the reservoir with the wiring harness for the coolant temperature sensor, which can simplify installation compared to purchasing separate components. This reduces the chance of wiring errors or loose connections.

4. **Cost-Effective Alternative** As an aftermarket part, it is typically more affordable than an OEM (Original Equipment Manufacturer) replacement, offering good value for budget-conscious buyers.

5. **Warranty and Support** BuyAutoParts often provides warranties or return policies, offering some protection against manufacturing defects. Customer support is generally available for installation guidance or part verification.

6. **Compatibility with Modern Vehicles** The CSW series is designed to work with modern vehicle cooling systems, including those with electronic temperature sensors, ensuring proper function with the vehicle s ECU (Engine Control Unit).

---

1. **Potential Fitment Issues** While the part is advertised for specific vehicle models, there is always a risk of misalignment or compatibility problems if the vehicle has been modified or has unique cooling system configurations. Always verify the exact fitment with your vehicle s VIN or service manual.

2. **Quality Variability** While BuyAutoParts is generally reliable, aftermarket parts can sometimes have slight variations in fit, finish, or material quality compared to OEM parts. Some users may notice minor differences in the reservoir s shape or mounting points.

3. **Limited Brand Recognition** Unlike OEM parts, BuyAutoParts is not a manufacturer s brand, which may concern buyers who prioritize brand reliability over cost savings. However, this is subjective and depends on personal preference.

4. **Installation Complexity** Although the CSW series simplifies wiring, installing the reservoir may still require draining the coolant system, removing the old reservoir, and ensuring proper sealing. DIYers without mechanical experience may find this challenging.

5. **Potential for Counterfeit Parts** Purchasing from unauthorized sellers (even on reputable marketplaces) could result in counterfeit or substandard parts. Always buy directly from BuyAutoParts official website or authorized dealers to avoid this risk.

6. **No Long-Term Performance Guarantee** While the part is likely durable, long-term performance depends on maintenance (e.g., coolant flushes, leak checks). Poor-quality coolant or neglect could lead to premature failure.

---

The **BuyAutoParts 19-90945AN Engine Coolant Reservoir (CSW)** is a solid aftermarket option for drivers looking for a cost-effective, compatible replacement with integrated wiring for the coolant temperature sensor. It offers ease of installation, durability, and compatibility with modern vehicles, making it a practical choice for many buyers. However, potential buyers should verify fitment with their specific vehicle, ensure they purchase from a trusted source, and be prepared for a moderately involved installation process.

---

- You need a reliable, affordable replacement for your vehicle s coolant reservoir.

- You prefer the convenience of a pre-wired CSW unit to avoid separate sensor wiring.

- You ve confirmed the part s compatibility with your vehicle s VIN or service manual.

- You re comfortable with basic automotive maintenance or have access to professional installation.

- You require an OEM part for warranty or resale purposes.

- Your vehicle has been heavily modified, and you re unsure about fitment.

- You re purchasing from an unverified seller, risking counterfeit parts.

- You lack mechanical experience and are uncomfortable with coolant system installation.

**Final Verdict:** For most drivers seeking a practical, budget-friendly replacement with integrated wiring, the **BuyAutoParts 19-90945AN** is a strong choice. Always cross-reference the part number with your vehicle s specifications to ensure a perfect fit.

Details:

Tested and Approved: Each part is run through rigorous testing before it leaves the factory. Built for trouble-free ownership and 100% visually inspected quality tested, this Engine Coolant Reservoir is backed by our satisfaction guarantee. Condition: NEW. Technical Specifications: Part Type:Engine Coolant Reservoir.

Premium Parts: All parts are premium ISO/TS 16949 quality. Electric Steering Racks. Vehicle Fitment. Power Steering Gear boxes.

Brand:BuyAutoParts. Warranty:1 Year. Part Number:19-90945AN. This Engine Coolant Reservoir is manufactured and tested to the strictest OE car truck standards for unparalleled performance.

part #: 1990945an price

• $245.41

specifications ocoosys:

• brand: Buyautoparts
• mpn: 19-90945an
• part type: Engine
• manufacturer warranty: 1 Year
• ipn: 11990945-101
• california prop 65 warning: Prop65 Warning
• upc: 193332342686

shipping ocoosys:

• transit: 3-6 Days
• type: Fixed
• cost: $0.00
• class: Standard, Expedited, One-day
• service: Standard, Expedited, Overnight

returns ocoosys:

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

seller ocoosys:

• # reviews: 19469
• rating: 98.6%
• city: Hebron, Kentucky

general ocoosys:

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

offer ocoosys:

• availability: In Stock
• quantity: 10
• options: Ship-to-home
• sold: 0
• started: March 15, 2026

payments ocoosys:

• other
• credit card: Visa
• wallet: Apple-pay

Buyautoparts 19-90945AN Is Similar To:

• Buyautoparts H1-80520an For Nissan 200sx 1982 Coolant Temperature Sensor Csw (62.5% similar) Premium parts: all parts are premium ISO/ts 16949 quality. Brand:buyautoparts. Part NUMBER:H1-80520AN. Tested and approved: each part is run through rigorous testing before it leaves the factory. Built for trouble-free ownership and 100% visually inspected quality tested, this engine coolant ...(September 25th, 2024)
• Buyautoparts H1-80502an For Dodge Caravan Daytona 1985 Coolant Temperature Sensor (55.6% similar) Buyautoparts for dodge caravan Dayton 1985 coolant temperature sensor: easy install: oem fit and finish for easy installation. Brand:buyautoparts. Tested and approved: each part is run through rigorous testing before it leaves the factory. Condition: new. Built for trouble-free ownership and 100% ...(January 5th, 2025)
• Buyautoparts H1-80853an For Nissan 810 Maxima 280zx Coolant Temp Sensor Gap (56.7% similar) WARRANTY:1 year. Built for trouble-free ownership and 100% visually inspected quality tested, this engine coolant temperature sensor is backed by our satisfaction guarantee. The computer uses this and other inputs to calculate the correct amount of fuel delivered. Premium parts: all parts are ...(January 5th, 2025)
• Buyautoparts H1-80459an For Ford Excursion F-250 Super Duty 2003 Coolant Temperature Sensor Gap (54.4% similar) Part NUMBER:H1-80459AN. Premium parts: all parts are premium ISO/ts 16949 quality. Technical specifications: part type:engine coolant temperature sensor. Tested and approved: each part is run through rigorous testing before it leaves the factory. Built for trouble-free ownership and 100% visually ...(January 9th, 2025)
• Buyautoparts H1-80607an Engine Coolant Temperature Sensor Tcp (70.8% similar) Condition: new. Tested and approved: each part is run through rigorous testing before it leaves the factory. WARRANTY:1 year. Part NUMBER:H1-80607AN. Premium parts: all parts are premium ISO/ts 16949 quality. Built for trouble-free ownership and 100% visually inspected quality tested, this engine ...(January 17th, 2025)
• Buyautoparts H1-80852an For Ford Ranger 1984 1985 1986 1987 1988 1989 Coolant Temp Sensor Gap (51% similar) Technical specifications: part type:engine coolant temperature sensor. WARRANTY:1 year. Built for trouble-free ownership and 100% visually inspected quality tested, this engine coolant temperature sensor is backed by our satisfaction guarantee. This engine coolant temperature sensor is manufactured ...(January 21st, 2025)
• Buyautoparts H1-80930an Engine Coolant Temperature Sensor Tcp (72.6% similar) Tested and approved: each part is run through rigorous testing before it leaves the factory. Part NUMBER:H1-80930AN. Technical specifications: part type:engine coolant temperature sensor. Condition: new. Premium parts: all parts are premium ISO/ts 16949 quality. Brand:buyautoparts. WARRANTY:1 year. ...(January 24th, 2025)
• Buyautoparts H1-80547an For Audi 5000 Quattro 100 80 Coolant Temperature Sensor Gap (53.3% similar) WARRANTY:1 year. Brand:buyautoparts. Technical specifications: part type:engine coolant temperature sensor. Premium parts: all parts are premium ISO/ts 16949 quality. Built for trouble-free ownership and 100% visually inspected quality tested, this engine coolant temperature sensor is backed by our ...(February 2nd, 2025)
• Buyautoparts H1-80449an For Audi 5000 A6 Cabriolet 90 And Volkswagen Passat Coolant Temperature Sensor Gap (46.8% similar) WARRANTY:1 year. Tested and approved: each part is run through rigorous testing before it leaves the factory. Brand:buyautoparts. Premium parts: all parts are premium ISO/ts 16949 quality. Technical specifications: part type:engine coolant temperature sensor. Built for trouble-free ownership and 100...(February 13th, 2025)
• Buyautoparts H1-80454an For Honda Civic 2001-2005 Coolant Temperature Sensor Gap (57.6% similar) Tested and approved: each part is run through rigorous testing before it leaves the factory. Built for trouble-free ownership and 100% visually inspected quality tested, this engine coolant temperature sensor is backed by our satisfaction guarantee. Brand:buyautoparts. Part NUMBER:H1-80454AN. This ...(March 7th, 2025)
• Buyautoparts H1-80486an For Suzuki Xl-7 2007-2009 Coolant Temperature Sensor Gap (54.5% similar) Tested and approved: each part is run through rigorous testing before it leaves the factory. Built for trouble-free ownership and 100% visually inspected quality tested, this engine coolant temperature sensor is backed by our satisfaction guarantee. This engine coolant temperature sensor is ...(March 8th, 2025)