Global Parts 856C Radiator

Radiator for GM Full-Size Cars

Global Parts 856C is a replacement radiator for select Buick, Cadillac, Oldsmobile, and Pontiac applications from the mid-1980s through the mid-1990s. It is built with an aluminum core and plastic tanks, and it includes both engine oil cooler and transmission oil cooler provisions for the listed vehicles.

Key Features

• Aluminum core with plastic tank construction
• Cross-flow radiator design
• 1-row core layout with 1.26 in. (32 mm) core thickness
• Transmission oil cooler included with adapter-style fittings
• Engine oil cooler included
• Inlet diameter: 1.3 in. (33.02 mm)
• Core fin quantity: 64 per 4 in.

Detailed Description

Global Parts 856C is a radiator assembly for GM rear-wheel-drive sedans and chassis applications that require engine oil cooling and transmission fluid cooling. The cross-flow layout supports efficient heat transfer, while the aluminum core helps dissipate engine heat and the plastic tanks provide a common OE-style construction. This part cross-references Spectra Premium CU856 and UAC RA1474C for the same application. It is a direct replacement choice for vehicles such as the Buick Park Avenue, Cadillac DeVille, and Cadillac Fleetwood when the listed cooling configuration matches.

What This Radiator Helps Address

• Engine overheating caused by a worn or restricted radiator
• Transmission temperature issues related to a failing cooler circuit
• Oil cooling concerns when the original cooler passages are damaged
• Coolant leaks from aged tanks, seams, or core damage
• Reduced cooling efficiency from corrosion or internal blockage

Installation Notes and Tips

Verify radiator dimensions, inlet size, and cooler fitting style before installation. This radiator is listed for vehicles with engine oil cooler and without low coolant sensor where noted in fitment. Confirm the application against the vehicle’s cooling package, especially on Cadillac Commercial Chassis, Cadillac DeVille, Cadillac Eldorado, Cadillac Seville, Cadillac Fleetwood, Buick LeSabre, Buick Park Avenue, Buick Riviera, Oldsmobile 98, and Pontiac Bonneville models. Global Parts 856C should be matched to the original radiator configuration before removal of the old unit.

Quality Assurance

Global Parts 856C is built as a replacement radiator for the specified GM applications and follows the listed OE-style cooling configuration. Confirm fitment by year, make, model, and cooling options before purchase.