One Stop Solutions 556 Radiator

Radiator for Ford Mustang and Related Applications

OSC Premium New Automotive Radiator Part Number 556 is built for OE-style form and function with a premium aluminum core, plastic tanks, and a crossflow design. It is engineered for direct replacement use in select Ford Mustang, Thunderbird, Cougar, and other listed applications from 1980 through 1993.

Key Features

• Core dimensions: 24 1/2 in. height, 17 5/8 in. width, and 1-1/4 in. thickness
• Crossflow radiator design with 1 1/4 in. inlet and 1 1/2 in. outlet
• Transmission oil cooler included with concentric cooler design
• Premium aluminum core construction with plastic tanks
• Die-cut gasket design for leak resistance
• Individually pressure tested during production
• Engineered for multi-fit applications without changing the look or fit
• Part number 556 cross-references Spectra Premium CU556 for the same application

Detailed Description

This OSC radiator is designed around OE cooler layout and factory-style fitment for vehicles such as the Ford Mustang, Mercury Cougar, and Ford Thunderbird. The radiator uses premium-grade aluminum tubes and fins, with cadmium-plated tubes inside and out to help resist premature failure. The unit also includes a concentric transmission oil cooler and is assembled with fitted components to factory specifications.

Part number 556 is built for direct replacement service in select 1980-1993 Ford Mustang applications, along with listed Ford, Lincoln, and Mercury models. It is a practical choice when replacing a worn or leaking radiator on a high-mileage vehicle that needs stable cooling performance and OE-style packaging.

What This Radiator Helps Address

• Coolant leaks from a damaged or aging radiator
• Overheating caused by restricted or inefficient heat transfer
• Transmission fluid temperature concerns when the cooler circuit is part of the failure
• Fitment issues from a radiator that no longer matches factory dimensions
• Cooling system wear on older Ford Mustang, Thunderbird, and Cougar platforms

Installation Notes and Tips

Verify core size, inlet and outlet locations, and transmission cooler connection spacing before installation. This radiator is a crossflow design and should be matched to the vehicle’s original cooling layout. Inspect hoses, clamps, and mounting points during replacement to help ensure a proper seal and stable installation. Confirm application details for your specific Ford Mustang, Mercury Cougar, Lincoln Mark VII, or other listed vehicle before ordering.

Quality Assurance

OSC states that each radiator is pressure tested during production, with cooler circuits tested before tank installation and the completed assembly tested again. The design also incorporates OE-style cooler architecture and upgraded materials to address common failure points in older cooling systems.