One Stop Solutions 1798 Radiator

Radiator for 1996-1998 Buick Skylark and More

One Stop Solutions 1798 is a crossflow radiator built for OE-style fit and cooling performance in select GM applications. It uses premium-grade aluminum construction with plastic tanks, a plated transmission oil cooler, and a single-row core layout to support dependable heat transfer in daily driving conditions.

Compatible With 1996-1998 Buick Skylark, 1996-1998 Oldsmobile Achieva, 1996-1998 Pontiac Grand Am, and 1996 Chevrolet Corsica, this radiator is engineered for direct replacement fitment. The One Stop Solutions 1798 radiator is designed around factory dimensions and cooling connections for a clean installation and consistent operation.

Key Features

• OE-style radiator design for factory fit and function
• Premium-grade aluminum core construction with plastic tanks
• Crossflow layout with a single-row core
• Plated transmission oil cooler included
• Core dimensions: 26 in. height, 14 7/8 in. width, 5/8 in. thickness
• Inlet and outlet diameters: 1 5/16 in.
• Pressure tested during production for leak verification
• Factory-spec component fitment with matched headers and tank design

Detailed Description

OSC Premium New Automotive Radiator part number 1798 is built to match original equipment form and function while adding durability-focused engineering details. The radiator uses aluminum tubes and a die-cut gasket design to help maintain a secure seal, while the transmission cooler is integrated in the tank for vehicles that require it. This radiator is a practical replacement choice for drivers servicing a Buick Skylark radiator, Oldsmobile Achieva radiator, Pontiac Grand Am radiator, or Chevrolet Corsica radiator with OE-style cooling requirements.

This part cross-references Four Seasons 56007 for the same application. It also cross-references Spectra Premium CU1515 for the same application.

Common Problems This Radiator Can Address

• Overheating caused by a leaking or restricted radiator core
• Coolant loss from cracked tanks, seams, or gasket failure
• Poor heat rejection from an aging factory radiator
• Transmission fluid temperature concerns in vehicles with an integrated cooler
• Fitment issues from non-OE replacement parts

Installation Notes and Tips

Verify inlet and outlet sizes, core dimensions, and transmission cooler line spacing before installation. This radiator is a direct-fit style replacement for the listed applications, so factory mounting points and hose connections should be checked against the original unit before removal. Flush the cooling system, inspect hoses and clamps, and confirm the cooling fan and thermostat are operating correctly to protect the new radiator after installation.

Quality Assurance

OSC tests the transmission and engine oil coolers before assembly, checks the radiator core prior to assembly, and tests the completed unit again after assembly. The design also incorporates engineering updates aimed at improving durability and cooling performance in higher-mileage vehicles.