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  3. GM 21788

GENUINE GM PARTS 21788 Radiator 707773819807

21788 Genuine Gm Parts Radiator

( Brand: Genuine Gm Parts ), ( Manufacturer Part Number: 21788 ), ( Type: Radiator ), ( UPC: 707773819807 )

Review GENUINE GM PARTS Radiator

The GM Part Number 21788 is a radiator designed specifically for select GM vehicles. This radiator is engineered to provide optimal cooling performance, ensuring your engine operates at the most efficient temperature.

The radiator is constructed with a high-density core, which increases the cooling capacity and allows for better heat dissipation. The core is composed of a durable aluminum material, making it both lightweight and robust.

The radiator's tanks are made of a sturdy polyethylene material, resistant to corrosion and rust. The tanks are also designed with an integrated pressure test port, allowing for easy pressure testing during maintenance.

The inlet and outlet ports are engineered with large, tapered openings that ensure smooth coolant flow and prevent debris build-up. The radiator is also equipped with a pressure cap that maintains the proper cooling system pressure and prevents coolant loss.

The GM 21788 radiator is designed to meet or exceed OEM specifications for cooling performance and fitment. It comes with all necessary hardware for installation, including mounting brackets and hoses. It is recommended to follow the installation instructions carefully to ensure proper installation and prevent any potential damage to the cooling system.

Overall, the GM 21788 radiator is a high-quality, durable cooling component that is designed to provide optimal cooling performance for your GM vehicle. Its robust construction, large coolant flow openings, and resistance to corrosion make it an excellent choice for maintaining the health and longevity of your engine.

Buying a GM part number 21788 radiator comes with its own set of advantages and disadvantages. Here's a detailed analysis: Advantages:

1. Original Equipment Manufacturer (OEM): This radiator is an original equipment manufacturer part, which means it is specifically designed and manufactured for a GM vehicle. This ensures a proper fit and optimal performance.

2. High Quality: OEM parts like the GM 21788 radiator are built to meet or exceed the original equipment specifications. This translates to durability and reliability.

3. Warranty: OEM parts usually come with a warranty, which provides peace of mind and protection against manufacturing defects.

4. Proper Functioning: A radiator is a crucial component in maintaining the cooling system of a vehicle. A properly functioning radiator ensures the engine operates efficiently and doesn't overheat.

Disadvantages:

1. Cost: OEM parts like the GM 21788 radiator may be more expensive compared to aftermarket alternatives. This could be a significant deterrent for some buyers.

2. Limited Availability: Depending on the specific model and year of the GM vehicle, the OEM radiator may not be readily available at local dealerships or auto parts stores.

3. Longer Delivery Time: If the OEM radiator is not available locally, it may take longer to obtain it, potentially leading to a delay in repairing the vehicle.

Conclusion:

The decision to buy a GM 21788 radiator depends on your priorities. If you value the assurance of an OEM part, the peace of mind that comes with a warranty, and the confidence in knowing that it will fit and function properly, then the higher cost and potential longer delivery time may be worth it. On the other hand, if you're looking for a more budget-friendly option, an aftermarket radiator may be a better choice, but keep in mind that it may not provide the same level of fit, finish, and performance as an OEM part.

Recommendation:

If you have the budget and are concerned about the long-term performance and fit of the radiator, we would recommend purchasing the GM 21788 radiator as an OEM part. However, if you're working with a tight budget and are willing to accept a potential trade-off in performance or fit, an aftermarket radiator could be a suitable alternative. Ultimately, the choice depends on your individual needs and circumstances.

Details:

Note: Never attempt to remove a surge or radiator cap while the engine is hot. FAQ: My engine is overheating does this mean I need to replace my radiator. Downloads: Warranty. It is important to check for coolant leaks or a malfunctioning fan.

These radiators are designed to be corrosion resistant with optimal heat transfer characteristics. No, an overheating engine could mean issue with your radiator, but there are other pieces of the cooling system that cause to overheat. Serious injury could result. Modern radiators are made from aluminum and plastic, while older vehicles used copper brass.

Corrosion-resistant aluminum designed core helps optimize the radiators long lasting service life. Either way it is important to get the whole cooling system checked when your engine overheats. Radiator: Part Number: 21788. GM regularly updates production and service part designs to integrate new materials technologies.

Replace coolant with a mixture of antifreeze and water according to the owners manual recommendations. Periodically, remove bugs, leaves, and other debris from the front of radiator. Also make sure to check coolants concentration because the water ratio can affect freezing or boiling point. GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle.

Make sure to pressure test the cap. They can block airflow and substantially reduce cooling efficiency. Evaluate radiator and cap for leaks, corrosion, or worn gasket. Troubleshooting: Maintain proper coolant levels and check regularly.

Features:: Lightweight; the radiators have a positive heat transfer to weight ratio. Some GM Genuine Parts may have formerly appeared as AcDelco Original Equipment OE.

part #: 21788 prices

  • $199.22-$500.49

specifications radiatoranch:

  • brand: Genuine Gm Parts
  • mpn: 21788
  • type: Radiator
  • upc: 707773819807

seller radiatoranch:

  • rating: 98.2%
  • # reviews: 22992
  • city: Jacksonville, Florida

returns radiatoranch:

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

general radiatoranch:

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

offer radiatoranch:

  • quantity: 1
  • options: Ship-to-home
  • started: June 22, 2025
  • sold: 0
  • availability: In Stock

payments radiatoranch:

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

shipping radiatoranch:

  • carrier: UPS
  • service: UPS Ground Saver, UPS Next Day Air Saver
  • transit: 4-9 Days
  • class: Economy, One-day
  • cost: $0.00
  • type: Calculated
type: radiator,
category: auto parts > car truck parts accessories > engine cooling components > radiators, sku: 7371750945477693,

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