One Stop Solutions 1145 Radiator

Radiator for Mitsubishi Eclipse and Plymouth Laser

Restore cooling performance with this OSC Premium New Automotive Radiator, part number 1145. Built for O.E. form and function, it is engineered for the 1990-1994 Mitsubishi Eclipse and 1990-1994 Plymouth Laser with a direct-fit layout for downflow applications.

Key Features

• Premium-grade aluminum construction with plastic tanks
• Downflow design with one-row core configuration
• Transmission oil cooler included with concentric cooler type
• Cadmium-plated tubes inside and out to help resist premature failure
• Die-cut gasket design for leak resistance
• Individually pressure tested during production
• Factory-style fit, form, and function for easier installation

Detailed Description

OSC part number 1145 is a replacement radiator engineered to match original equipment dimensions and cooling layout. Core measurements include a 13 3/4-inch height, 26 5/16-inch width, and 1-inch thickness, with 1 3/8-inch inlet and outlet diameters. The unit uses a PA core material with plastic tanks and includes a transmission oil cooler, making it a practical choice for Mitsubishi Eclipse and Plymouth Laser owners looking to replace a worn or leaking radiator while maintaining OE-style routing and fitment.

This radiator is built with enhancements aimed at improving durability and cooling consistency in higher-mileage vehicles. OSC also tests the transmission and engine oil coolers before tank installation, checks the core before assembly, and tests the completed radiator again after assembly. This part cross-references APDI 8011145 for the same application.

Common Issues This Radiator Can Address

• Coolant leaks from cracked tanks, seams, or aged gasket surfaces
• Overheating caused by restricted or inefficient heat transfer
• Transmission fluid temperature concerns when the cooler circuit is compromised
• Reduced cooling efficiency from a damaged or corroded original radiator
• Fitment problems when replacing a radiator with a non-OE-style unit

Installation Notes and Tips

• Fits 1990-1994 Mitsubishi Eclipse, N/A.
• Fits 1990-1994 Plymouth Laser, N/A.
• Verify inlet and outlet sizing, cooler routing, and mounting points before installation.
• Flush the cooling system and inspect hoses, clamps, and related components during replacement.
• Confirm transmission cooler line condition if the vehicle uses the integrated cooler circuit.

Quality Assurance

OSC radiators are manufactured to O.E. performance standards and individually pressure tested during production. The design uses premium materials and factory-style assembly practices to support consistent cooling performance and dependable fitment for the Mitsubishi Eclipse and Plymouth Laser applications listed above. Part number 1145 is built as a direct replacement radiator for these vehicles.