One Stop Solutions 537 Radiator

Radiator for Corolla and Prizm Cooling Service

Restore cooling system performance with this OSC Premium new radiator, part number 537. Built for O.E. form and function, it is engineered for the 1988-1992 Toyota Corolla and 1989-1992 Geo Prizm applications listed below.

• Fits 1989-1992 Geo Prizm, N/A
• Fits 1988-1992 Toyota Corolla, N/A

Key Features

• Premium aluminum construction with plastic tanks
• Downflow design with a 1-row core
• Transmission oil cooler included with concentric cooler design
• Core dimensions: 26 5/16 in. wide, 12 13/16 in. high, 5/8 in. thick
• Inlet and outlet diameters: 1 1/4 in.
• Engine oil cooler not included
• Cap not included
• Part number 537 is engineered for drop-in fit, form, and function

Detailed Description

OSC part number 537 is a replacement radiator built to match original equipment layout for Toyota Corolla and Geo Prizm cooling system service. The radiator uses premium-grade materials, including aluminum core construction and plastic tanks, with cadmium-plated tubes designed to resist premature failure. It also includes a concentric transmission oil cooler and is pressure tested during production to verify sealing and cooler integrity. The design uses a die-cut gasket and factory-style component placement to support a clean installation and proper fit.

This radiator is a practical choice for 1988-1992 Toyota Corolla and 1989-1992 Geo Prizm vehicles where the original unit is a 1-row equivalent radiator. The part number 537 is built to maintain O.E. performance while addressing common wear points found in higher-mileage cooling systems.

Common Problems This Radiator Can Address

• Overheating caused by a restricted or leaking radiator
• Coolant loss from cracked tanks or failed seals
• Transmission fluid temperature concerns related to a worn cooler circuit
• Reduced cooling efficiency from aged core materials
• Fitment issues from a damaged or non-O.E.-style replacement unit

Installation Notes and Tips

Verify inlet and outlet hose sizes, cooler line routing, and mounting points before installation. Flush the cooling system and inspect hoses, clamps, and thermostat condition when replacing the radiator. This radiator includes the transmission oil cooler, so confirm cooler line connections match the vehicle configuration. This part cross-references APDI 8010537 and Spectra Premium CU537 for the same application.

Quality Assurance

OSC tests the radiator core before assembly and retests the completed unit after assembly. The transmission and engine oil cooler circuits are also checked prior to installation into the tank. Engineering updates are used to improve durability and address original design failure points, including enhanced fin density, thicker cores, and larger transmission cooler capacity where applicable.