GM GENUINE PARTS 15-1716 Engine Coolant Water Outlet L31

( Brand: Gm Genuine Parts ), ( Manufacturer Part Number: 15-1716 ), ( Part Type: Engine Outlet ), ( Oe/oem Part Number: 12556594 ), ( Manufacturer Warranty: 1 Year )

Review GM GENUINE PARTS Engine Coolant Water Outlet vin Eng Code L31

The **GM 15-1716 Engine Coolant Water Outlet (VIN L31)** is a precision-engineered component designed specifically for General Motors vehicles equipped with the L31 engine family, which includes models such as the Chevrolet Silverado, GMC Sierra, and other full-size trucks and SUVs from the mid-2000s onward. This coolant water outlet is a critical part of the engine s cooling system, responsible for regulating the flow of coolant between the engine block and the radiator or other cooling components. Crafted from high-quality **cast aluminum**, this part is engineered to withstand the extreme temperatures and pressures encountered during operation, ensuring reliable performance even under demanding conditions. The outlet features a **threaded connection** (typically 1-inch NPT or equivalent) that securely attaches to the engine s coolant passages, preventing leaks while maintaining optimal coolant circulation. Its robust construction also includes **reinforced gaskets or O-rings** (depending on the application) to enhance sealing integrity and reduce the risk of coolant loss, which is essential for preventing overheating and engine damage. The **VIN L31 designation** indicates compatibility with specific engine variants within the L31 family, ensuring a perfect fit for applications such as the **5.3L V8 engines** found in these vehicles. Whether installed in a high-performance setup or a daily driver, this coolant water outlet plays a vital role in maintaining engine efficiency, longevity, and overall reliability. For optimal performance, it is recommended to use **GM-approved coolant** and follow manufacturer guidelines for installation, including proper torque specifications to avoid stripping the threads or damaging the sealing surfaces. This component is a testament to GM s engineering standards, offering durability and precision for those seeking to restore or upgrade their vehicle s cooling system.

### **Pros and Cons of buying a GM 15-1716 Engine Coolant Water Outlet (VIN L31)**

The GM 15-1716 engine coolant water outlet (part of the cooling system) is a critical component for maintaining proper engine temperature and preventing overheating. Here are the key advantages of purchasing this part:

1. **Direct Fitment** This part is designed specifically for GM vehicles with the VIN L31 designation, ensuring compatibility without modifications. It will fit engines like the 5.3L V8 (e.g., in the Silverado, Sierra, or Tahoe) without issues.

2. **Prevents Coolant Leaks** A faulty or worn-out water outlet can cause coolant leaks, leading to overheating, reduced engine performance, or even catastrophic failure. Replacing it ensures a secure seal and proper coolant flow.

3. **Improves Cooling Efficiency** A clogged or damaged outlet restricts coolant circulation, forcing the engine to work harder. A new part restores optimal cooling, extending engine life and preventing long-term damage.

4. **Prevents Further Damage** Ignoring a failing water outlet can lead to warped cylinder heads, blown head gaskets, or even engine seizure. Replacing it early avoids costly repairs down the line.

5. **OEM Quality** GM parts are built to the same standards as original equipment, ensuring durability and reliability compared to aftermarket knockoffs.

6. **Easy Installation** This part is relatively straightforward to replace, requiring basic tools and mechanical knowledge. Many DIYers can install it without professional help.

7. **Long-Term Cost Savings** While the part itself has a moderate cost, replacing it early prevents far more expensive engine repairs, making it a cost-effective solution.

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1. **Cost** As an OEM or high-quality replacement part, it may be more expensive than aftermarket alternatives. Prices typically range from **$50 to $150**, depending on the source (new vs. refurbished).

2. **Potential Counterfeit Parts** Some sellers (especially online) may offer fake or low-quality replicas. Buying from a reputable dealer (GM parts store, RockAuto, or a trusted mechanic) reduces this risk.

3. **Installation Challenges** If the vehicle has been previously modified or if the surrounding components (hoses, gaskets) are degraded, installation could be more difficult than expected. Rust or corrosion in older vehicles may require extra effort to remove the old part.

4. **Compatibility Concerns** While this part is designed for VIN L31 engines, slight variations exist between model years (e.g., 2007 vs. 2010). Always verify the exact application before purchasing.

5. **Additional Maintenance Needed** Replacing the water outlet is a good opportunity to inspect and replace other cooling system components (hoses, thermostat, radiator cap) if they show signs of wear.

6. **Labor Costs if Professional Installation is Needed** If the owner lacks mechanical experience, hiring a mechanic may add **$100 $200** in labor costs, increasing the total expense.

7. **Coolant System Flush Recommended** After installation, a full coolant flush is often recommended to remove old coolant and contaminants, adding to the overall maintenance cost.

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### **Conclusion**

The GM 15-1716 engine coolant water outlet is a **necessary and reliable replacement** for vehicles experiencing coolant leaks or cooling inefficiencies. Its direct fitment, OEM quality, and role in preventing severe engine damage make it a worthwhile investment. However, the cost, potential for counterfeit parts, and the need for proper installation must be weighed against the risks of neglecting the issue.

If the part is purchased from a trusted source and installed correctly (either by the owner or a professional), it will **extend engine life, prevent overheating, and avoid far more expensive repairs**. For most GM VIN L31 owners facing coolant-related issues, this is the **best long-term solution**.

### **Recommendation**

- **Buy from a reputable dealer** (GM Parts Store, RockAuto, or a local auto parts shop with a good return policy) to ensure authenticity.

- **Inspect surrounding components** (hoses, gaskets, thermostat) during replacement replace any worn parts to prevent future issues.

- **Follow proper installation steps**, including sealing the threads with anti-seize compound if needed.

- **Flush the cooling system** after installation to ensure clean coolant flow.

- **Monitor for leaks** after replacement and top off coolant as needed.

If the budget is a concern, compare prices from different sellers, but **do not compromise on quality** a cheap counterfeit part could lead to recurring problems. For most drivers, the **upfront cost of a genuine GM part is justified by the protection it provides for the engine**.

Details:

It is a crucial component for maintaining proper engine cooling and preventing overheating. Regular inspection and maintenance of this part are essential for ensuring optimal engine performance longevity. The product carries the OE/OEM part number 12556594 and is manufactured by GM Genuine Parts, ensuring quality compatibility with vehicle.

part #: 151716 prices

• $38.99-$41.50

specifications ocoosys:

• brand: Gm Genuine Parts
• mpn: 15-1716
• part type: Engine Outlet
• oe/oem part number: 12556594
• manufacturer warranty: 1 Year

shipping ocoosys:

• carrier: USPS
• transit: 5-11 Days
• cost: $6.50
• service: USPS Ground Advantage
• class: Standard
• type: Fixed

offer ocoosys:

• best offers: True
• availability: In Stock
• options: Ship-to-home
• started: April 30, 2026
• sold: 0
• quantity: 1

seller ocoosys:

• city: Urbana, Ohio
• rating: 0.0%
• # reviews: 6

returns ocoosys:

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

general ocoosys:

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

payments ocoosys:

• other
• wallet: Paypal
• credit card: Discover

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