GM 25636828 Box Coolant Reservoir Bottle Tank

( Brand: Gm ), ( Manufacturer Part Number: 25636828 ), ( Part Type: Box Tank ), ( Color: White ), ( Style: Oem ), ( Material: Polypropylene ), ( Surface Finish: Bare ), ( Universal Fitment: Direct Replacement ), ( Placement On Vehicle: Front ), ( California Prop 65 Warning: This Product Contains Chemicals Known To The State. )

Review GM Open Box Coolant Reservoir Bottle Tank Avenue fits LESABRE PARK DEVILLE 1991–1999

The **GM 25636828 Coolant Reservoir Bottle/Tank** is a precision-engineered, high-performance fluid reservoir specifically designed for the **1991 1999 Chevrolet/Lucas (now GM) LaSabre, Impala, and Park Avenue/Deville** models, ensuring optimal cooling system efficiency and longevity. Crafted from durable **polypropylene plastic**, this reservoir is engineered to withstand the thermal and mechanical stresses of a high-performance cooling system, providing a reliable and leak-free solution for maintaining proper coolant levels. The **OEM-fitment design** guarantees an exact match with the factory installation, eliminating the need for modifications or adapters, while its **clear, ribbed construction** allows for easy visual monitoring of coolant levels, reducing the risk of overheating and engine damage. The reservoir features a **secure, threaded cap** with an integrated pressure relief valve to prevent overpressure and spillage, ensuring safe operation even under extreme driving conditions. Compatible with **Ethertech, Prestone, and other high-quality coolant formulations**, this reservoir is built to integrate seamlessly with the **EFI (Electronic Fuel Injection) cooling system** found in these classic GM vehicles, supporting both **gasoline and performance-oriented applications**. Whether used in daily driving, towing, or high-performance modifications, the **GM 25636828 Coolant Reservoir** delivers the durability and performance expected from an original equipment part, helping to preserve the integrity of your engine s cooling system for years to come.

### **Pros and Cons of Buying a GM 25636828 Coolant Reservoir for a 1991-1999 LaSabre/Park Avenue**

1. **Direct Fitment** This is an OEM (Original Equipment Manufacturer) part designed specifically for your vehicle s year and model, ensuring compatibility with the engine bay layout, mounting points, and coolant system.

2. **Reliability** GM parts are built to meet factory specifications, reducing the risk of leaks, cracks, or premature failure compared to aftermarket alternatives that may not match the original design.

3. **Compatibility with Coolant System** The reservoir s capacity and design align with the vehicle s cooling system, preventing overheating or poor circulation if the correct size isn t used.

4. **Ease of Installation** Since it s an exact replacement, installation is straightforward, requiring only basic tools (no modifications needed).

5. **Long-Term Durability** GM plastics and materials are generally robust, reducing the likelihood of warping or degradation over time, especially in older vehicles.

6. **Warranty Coverage** If purchased new from an authorized dealer or reputable online retailer, it may come with a warranty, providing peace of mind against defects.

7. **Prevents Coolant Leaks** A failing reservoir can cause coolant loss, leading to overheating. Replacing it proactively avoids costly engine damage.

1. **Cost** GM OEM parts are typically more expensive than aftermarket alternatives, which may be a consideration if budget is a constraint.

2. **Availability** While widely available for older GM vehicles, sourcing may be limited if buying from a local dealer (online marketplaces like RockAuto, eBay, or GM parts stores are better options).

3. **Potential Counterfeit Parts** If purchasing from untrusted sellers, there s a risk of receiving a knockoff that doesn t meet GM standards, leading to leaks or poor performance.

4. **Overkill for Minor Issues** If the reservoir is only slightly cracked or leaking, some may opt for a cheaper aftermarket fix, though this isn t recommended for long-term reliability.

5. **Mixed Quality in Used Parts** If buying used, there s no guarantee of the part s condition, whereas a new OEM part ensures freshness.

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### **Conclusion**

The **GM 25636828 coolant reservoir** is the **best choice** for your 1991-1999 LaSabre/Park Avenue if you prioritize **reliability, longevity, and exact fitment**. While it may cost more than aftermarket options, the peace of mind and reduced risk of failure justify the investment, especially in an older vehicle where cooling system integrity is critical. If budget is a concern, verify that the aftermarket alternative is **GM-compatible** (e.g., from brands like ACDelco or Fram) before opting for a cheaper part.

- **Buy new** from a trusted source (e.g., RockAuto, GM Parts Online, or an authorized dealer) to ensure authenticity and warranty coverage.

- **Inspect the part** upon arrival for cracks, warping, or damage before installation.

- **Replace the coolant** during the installation to ensure a clean system and proper mixing with the new reservoir.

- **Check for leaks** after the first drive and periodically monitor coolant levels to confirm the repair s success.

For most owners, the **OEM part is the safest and most practical choice**, balancing cost with long-term performance.

Details:

The tank has a bare surface finish and serves as direct replacement in the front of vehicle. Perfect for those looking to replace their old or damaged coolant reservoir bottle tank on vehicle. The product is a coolant reservoir bottle tank designed for 91-99 Lesabre Park Avenue Deville vehicles. It is a genuine GM product made of polypropylene material in white color.

part #: 25636828 prices

• $19.76-$24.19

specifications ocoosys:

• for models: Lesabre, Park, Deville
• for years: 1991-1999
• brand: Gm
• mpn: 25636828
• part type: Box Tank
• color: White
• style: Oem
• material: Polypropylene
• surface finish: Bare
• universal fitment: Direct Replacement
• placement on vehicle: Front
• california prop 65 warning: This Product Contains Chemicals Known To The State.

seller ocoosys:

• # reviews: 13
• city: Urbana, Ohio
• rating: 100.0%

general ocoosys:

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

offer ocoosys:

• sold: 0
• availability: In Stock
• options: Ship-to-home
• started: May 19, 2026
• best offers: True
• quantity: 1

returns ocoosys:

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

shipping ocoosys:

• class: Standard
• cost: $5.62
• type: Calculated
• transit: 4-13 Days
• carrier: USPS
• service: USPS Ground Advantage

payments ocoosys:

• wallet: Paypal
• other
• credit card: Mastercard

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