GM Genuine parts may ship in a GM Genuine or AcDelco box. The product will fit and function the same.
GM GENUINE 21564 Specifications
Core Height (IN)
14.5807
Core Height (MM)
370.35
Core Material
Aluminum
Core Row Quantity
1
Core Thickness (IN)
0.5709
Core Thickness (MM)
14.5
Down Flow Or Cross Flow Type
Cross Flow
Engine Oil Cooler Included
No
Inlet Diameter (IN)
1.285
Inlet Diameter (MM)
32.63
Inlet Header Length (IN)
14.8126
Inlet Header Length (MM)
376.24
Inlet Header Width (IN)
2.6524
Inlet Header Width (MM)
67.37
Integral Engine Oil Cooler
No
Integral Transmission Oil Cooler
Yes
Mounting Type
Brackets and Pins
Outlet Diameter (IN)
1.275
Outlet Diameter (MM)
32.4
Outlet Header Length (IN)
14.8126
Outlet Header Length (MM)
376.24
Outlet Header Width (IN)
2.6181
Outlet Header Width (MM)
66.5
Outlet Location
Lower Left
Tank Material
Plastic
Transmission Oil Cooler Distance between Fittings (IN)
11.496
Transmission Oil Cooler Distance between Fittings (MM)
292
Transmission Oil Cooler Fitting Diameter (IN)
0.375
Transmission Oil Cooler Fitting Diameter (mm)
9.525
Transmission Oil Cooler Fitting Type
Quick Connect
Transmission Oil Cooler Included
Yes
Transmission Oil Cooler Plate Quantity
5
Transmission Oil Cooler Type
PLATE
Width (MM)
885.2
The radiator is the heart of a vehicle's cooling system. So, when it comes to replacing a worn radiator, you need a product that will match the original factory part in fit, form and function.
Superior fin waves provide a higher heat transfer
Lightweight; the radiators have a positive heat transfer to weight ratio
Corrosion-resistant aluminum core makes GM OE Radiators long lasting
Manufactured to GM OE specification for fit, form, and function
Service Tip: If you are experiencing unexplained or reoccurring radiator core leaks, or notice dark spots on your failed radiator core, test your coolant for Electrolysis. If detected, correct the source of the problem before replacing your failed radiator to prevent repeat failure.
Measurement Guide
Cooling System Maintenance | Tips & Tools
Without regular maintenance, cooling system components will degrade and fail prematurely, which can lead to costly engine damage. Protect your engine with simple preventative maintenance:
Completely drain and flush the system using Cooling System Flush prior to installation. Flushing the system is critical to prevent system contamination and failure.
Consider replacing the Radiator Hoses (and Hose Clamps), Thermostat and Radiator Cap as part of routine preventative maintenance. System contamination can cause these parts to degrade and fail over time, which can lead to severe engine damage from overheating.
Refill radiator with fresh Coolant / Antifreeze according to the volume and formula specified in your Owner's Manual. Inspect levels and condition every year.