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  3. GM 21820

GM GENUINE PARTS 21820 Acdelco Radiator

21820 Gm Genuine Parts Acdelco Radiator

( Brand: Gm Genuine Parts ), ( Manufacturer Part Number: 21820 ), ( Part Type: Radiator ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Parts Included: Only Part Reference 1 On The Diagram Is Included )

Review GM GENUINE PARTS Acdelco Radiator

The GM 21820 ACDelco Professional Radiator is an original equipment replacement (OER) part designed specifically for select 2002-2006 Chevrolet and GMC vehicles. This radiator is engineered to meet or exceed the original equipment specifications in terms of cooling capacity, material quality, and fitment.

The radiator is constructed using a heavy-duty, corrosion-resistant materials such as brass and copper-nickel alloy. The tanks are made of sturdy, single-piece aluminum, providing superior resistance to corrosion and leaks. The radiator also comes with a pressure tested, brass radiator cap that is designed to maintain the cooling system's optimal pressure.

The GM 21820 ACDelco Professional Radiator features a compact, efficient design with a large cooling capacity. The radiator's core has multiple, thin, finned tubes that provide a large surface area for effective heat dissipation. The radiator also includes a fan shroud that ensures proper airflow over the radiator, helping to maintain consistent engine temperature.

The radiator is designed to fit perfectly in your vehicle, with precise engine-specific mounting points and a detailed installation guide. The GM 21820 ACDelco Professional Radiator also comes with a 12-month/12,000-mile limited warranty, ensuring peace of mind and protection against manufacturing defects.

In summary, the GM 21820 ACDelco Professional Radiator is a high-quality, reliable replacement radiator for select Chevrolet and GMC vehicles. It is constructed using durable materials, has a large cooling capacity, and is engineered for easy installation. With its precise fitment and comprehensive warranty, you can trust that this radiator will help keep your engine running cool and efficiently.

Buying a GM 21820 AC Delco radiator for your vehicle comes with several pros and cons that you may want to consider before making your purchase.

Pros:

1. Original Equipment Manufacturer (OEM) Part: The GM 21820 AC Delco radiator is an original equipment manufacturer (OEM) part, which means it is designed and manufactured to meet the same specifications as the radiator originally installed in your vehicle by the automaker.

2. High-Quality Material: AC Delco radiators are made with high-quality materials that can withstand the rigors of daily driving. They are designed to provide efficient cooling and extend the life of your engine.

3. Warranty Coverage: AC Delco radiators come with a warranty that covers defects in materials and workmanship. The length of the warranty may vary depending on the specific part and the retailer.

4. Availability: AC Delco radiators are widely available at auto parts stores and online retailers, making it easy to find a replacement when you need one.

Cons:

1. Cost: OEM radiators like the GM 21820 AC Delco radiator can be more expensive than aftermarket radiators. However, the higher cost may be justified by the superior quality and warranty coverage.

2. Limited Compatibility: The GM 21820 AC Delco radiator is specifically designed for certain GM vehicles. Make sure to check that it is compatible with your vehicle before making a purchase.

3. Installation Complexity: Installing an OEM radiator like the GM 21820 AC Delco radiator may be more complex than installing an aftermarket radiator due to the precise fit and compatibility requirements.

In conclusion, the GM 21820 AC Delco radiator offers several advantages, including high-quality materials, OEM fit and finish, and warranty coverage. However, it may be more expensive than aftermarket radiators and may require more complex installation. If you prioritize the superior quality and peace of mind that comes with an OEM part, then the GM 21820 AC Delco radiator may be the best choice for you. If cost is a major concern, then you may want to consider an aftermarket radiator. Ultimately, the decision comes down to your specific needs and priorities.

Details:

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part #: 21820 prices

  • $382.00-$529.36

specifications radiatoranch:

  • brand: Gm Genuine Parts
  • mpn: 21820
  • part type: Radiator
  • genuine oem: Yes
  • manufacturer warranty: 1 Year
  • fitment type: Direct Replacement
  • parts included: Only Part Reference 1 On The Diagram Is Included

offer radiatoranch:

  • quantity: 2
  • options: Ship-to-home
  • sold: 0
  • availability: In Stock
  • started: July 10, 2025

seller radiatoranch:

  • city: Dallas, Texas
  • rating: 97.9%
  • # reviews: 3041

general radiatoranch:

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

returns radiatoranch:

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

payments radiatoranch:

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

shipping radiatoranch:

  • transit: 4-9 Days
  • cost: $67.55
  • class: Standard, Expedited, One-day
  • service: Standard, Expedited, Overnight
  • type: Fixed
part type: radiator, genuine oem: yes, manufacturer warranty: 1 year, fitment type: direct replacement, parts included: only part reference 1 on the diagram is included,
category: auto parts > car truck parts accessories > engine cooling components > radiators, sku: 7748716403227563,

Gm Genuine Parts 21820 Is Similar To:

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5 offers $382.00–$529.36 USD
  • Offer #1: $460.63 price + $0.00 shipping estimate = $460.63* total. Modern radiators are made from aluminum and plastic, while older vehicles used copper and brass.FREE SHIPPING
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