Cooling radiator General Motors GM 87821986 for Cadillac LYRIQ/CELESTIQ/Chevrolet Blazer EV

Cooling Radiator General Motors GM 87821986 for Cadillac LYRIQ/CELESTIQ/Chevrolet Blazer EV

Efficient Thermal Regulation for Next-Generation Electric Vehicles

The General Motors cooling radiator with part number 87821986 is a key component of the thermal management system for modern electric vehicles on the Ultium platform. Unlike traditional internal combustion engine vehicles, in electric cars, the radiator is responsible not only for cooling the power units but also for maintaining a strictly defined temperature range for the traction battery and inverters. The high heat dissipation of this unit ensures stable electronics operation during fast charging and intensive driving, preventing overheating of expensive power system components.

Technological Features and Durability

The radiator's construction is made according to modern OEM standards, which implies the use of aluminum alloy with high corrosion resistance and high-strength plastic tanks. The radiator fins have optimized geometry to ensure maximum airflow passage with minimal aerodynamic resistance. This allows effective dissipation of excess heat while maintaining the overall energy efficiency of the vehicle. The tubes and plates are connected by vacuum brazing, which eliminates leaks and provides mechanical rigidity to the entire structure.

Full Compatibility and Quality Assurance

This part is an original General Motors product, ensuring a perfect fit in standard locations without the need for modifications. The original design ensures proper mating with the cooling system pipes and reliable fixation in the fan frame (diffuser). Using the original radiator is critically important for Cadillac and Chevrolet electric vehicles, as the slightest deviation in hydraulic resistance or heat exchange characteristics can lead to incorrect operation of the high-voltage battery cooling algorithms.

Recommendations for Selection and Installation

When selecting a radiator, it is important to consider that the LYRIQ and Blazer EV models have specific requirements for the cleanliness of the internal circuit. Before installing a new radiator, it is recommended to flush the cooling system with a specialized compound to prevent old deposits from entering the new fins. Installation should be carried out by qualified personnel using certified antifreeze recommended by GM for electric systems. Regular inspection of the radiator's external surface for dirt and stone damage will help extend the life of the entire cooling system.

Usage Method

The product is intended for stationary installation at the front of the vehicle as part of the overall cooling module. The radiator is connected to the coolant circulation circuit via quick-release or clamp connections depending on the specific vehicle modification. After filling the system with antifreeze, a procedure for removing air pockets is required according to the manufacturer's technical regulations to ensure correct fluid circulation through the battery pack.

• Brand: General Motors

• Brand Registration Country: USA

• Country of Manufacture: Mexico

• Material: Aluminum, Plastic

• Size: 82.0 x 48.0 x 12.0 cm

• Color: Silver, Black

• Weight: 5400 g

• Gender: For Men

• Condition: New

• Product Group: Cooling System

• Purpose: Heat dissipation from drive components and battery

• Compatibility: Cadillac Lyriq (2023-2024), Cadillac Celestiq (2024), Chevrolet Blazer EV (2024), Honda Prologue (2024)

• Package Contents: Radiator assembly 1 pc, protective packaging

• Radiator Type: Tube-and-fin

• Construction: Assembled and brazed

• Cooling Type: Liquid

• Original OEM Number: 87821986

• Cross Numbers: 84931346, 87821985

• Fluid Type: Ethylene glycol-based antifreeze

• Vehicle Type: Passenger electric vehicle

• Mounting: Standard GM BEV3 platform brackets

• Operating Pressure: Up to 2.0 bar