One Stop Solutions 1212 Radiator

OE-Style Cooling Replacement

One Stop Solutions 1212 is a premium replacement radiator built for OE form and function. It is engineered for direct-fit service on select Buick Roadmaster, Chevrolet Caprice, and Oldsmobile Custom Cruiser applications, with crossflow construction and integrated engine and transmission oil cooler provisions.

Key Features

• Fits 1991 Buick Roadmaster, N/A
• Fits 1992-1993 Buick Roadmaster, N/A, w/EOC
• Fits 1991-1993 Chevrolet Caprice, N/A, w/EOC; w/LCI
• Fits 1991-1992 Oldsmobile Custom Cruiser, N/A, w/EOC
• Premium aluminum radiator construction with plastic tanks
• Crossflow design with one-row core layout
• Engine oil cooler included
• Transmission oil cooler included
• Cadmium-plated tubes inside and out for added corrosion resistance
• Die-cut gasket design to help prevent leaks
• Individually pressure tested during production
• Factory-style fitment with OE performance targets

Detailed Description

Part number 1212 is built around a 30 1/2-inch core height, 17 1/4-inch core width, and 1-1/4-inch core thickness for a direct replacement profile. The radiator uses a crossflow layout with 1 5/16-inch inlet and 1 9/16-inch outlet diameters, plus plated engine and transmission oil cooler sections spaced 11 1/2 inches apart. This design supports the cooling demands of full-size rear-wheel-drive platforms such as the Buick Roadmaster, Chevrolet Caprice, and Oldsmobile Custom Cruiser.

One Stop Solutions 1212 is engineered to match OE-style form and function while addressing common failure points found in higher-mileage cooling systems. The radiator core, tanks, headers, and related components are built to factory specifications, and the unit is tested before and after assembly to verify sealing and cooler performance. This part cross-references Spectra Premium CU1212 and Gates 20516 for the same application.

Common Problems This Radiator Addresses

• Overheating caused by a restricted or aging radiator core
• Coolant leaks from cracked tanks, seams, or gasket failure
• Transmission temperature rise from a worn cooler circuit
• Engine oil cooling loss on vehicles equipped with an oil cooler
• Reduced cooling efficiency from corrosion or internal blockage

Installation Notes and Tips

Verify inlet and outlet hose sizes, cooler line routing, and mounting points before installation. This radiator is a direct-fit replacement for the listed Buick Roadmaster, Chevrolet Caprice, and Oldsmobile Custom Cruiser applications, but the vehicle must match the original cooling configuration, including EOC and LCI notes where specified. Cap is not included.

Quality Assurance

OSC-style engineering focuses on OE performance, leak control, and durability. The radiator is pressure tested during production, and the cooler circuits are checked before installation into the tank and again after final assembly to confirm sealing and function.