One Stop Solutions 2371 Radiator

Radiator for Silverado and Sierra HD

One Stop Solutions Part Number 2371 is an OSC Premium new automotive radiator built for OE-style form and function. It is engineered for select Chevrolet Silverado and GMC Sierra heavy-duty applications, with a crossflow design, plastic tanks, and a plated engine oil cooler for dependable cooling performance.

For Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, and Sierra 3500 applications, this radiator is built around premium-grade aluminum construction and factory-style fitment details. The design focuses on cooling efficiency, leak resistance, and direct replacement installation.

Key Features

• Crossflow radiator design with a 34-inch core height and 17 1/4-inch core width
• 1-inch core thickness with a single-row core layout
• Plastic tank construction with PA core material
• Plated engine oil cooler included; transmission oil cooler not included
• Die-cut gasket design for improved sealing
• Individually pressure tested during production
• Factory-style fit, form, and function for direct replacement use
• Part Number 2371 cross-references Spectra Premium CU2370 for the same application

Detailed Description

This OSC radiator is designed to match original equipment dimensions and cooling layout for 1999-2007 Chevrolet Silverado and GMC Sierra heavy-duty trucks. It uses premium-grade tubes, fins, headers, and tanks, with cadmium-plated tubes inside and out to help resist premature failure. The radiator is engineered with OE cooler design standards and includes the engine oil cooler where originally equipped. Part Number 2371 is built for direct replacement service on Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, and Sierra 3500 models, including Silverado 2500 and Sierra 2500 applications with engine oil cooler coverage noted in fitment.

What It Helps Address

• Overheating caused by a worn or restricted radiator core
• Coolant leaks from aging tanks, seals, or core joints
• Reduced cooling efficiency in high-mileage Silverado and Sierra trucks
• Oil cooler-related heat management issues on equipped vehicles
• Fitment problems from non-OE-style replacement radiators

Installation Notes and Tips

Compatible With 2007 Chevrolet Silverado 2500 HD Classic, w/EOC; wo/TOC. Compatible With 2001-2006 Chevrolet Silverado 2500 HD, 2001-2006 Chevrolet Silverado 3500, 2001-2006 GMC Sierra 2500 HD, 2001-2006 GMC Sierra 3500, 2001-2004 Chevrolet Silverado 2500, 2001-2003 GMC Sierra 2500, 2002 Chevrolet Silverado 1500 HD, 1999-2000 Chevrolet Silverado 2500 w/EOC, and 1999-2000 GMC Sierra 2500 w/EOC. Verify inlet and outlet sizing, cooler configuration, and mounting points before installation. This radiator does not include a cap.

Quality Assurance

OSC tests the transmission and engine oil coolers before tank installation, checks the radiator core before assembly, and tests the completed unit again after assembly. The design also incorporates engineering updates aimed at addressing common original-design failure points in higher-mileage trucks.