One Stop Solutions 2003 Radiator

Radiator for Astro and Safari

Restore cooling performance with this OSC Premium New Automotive Radiator, part number 2003. It is built for the 1996-2005 Chevrolet Astro and 1996-2005 GMC Safari, with OE-style form and function for direct replacement service.

Designed around premium aluminum construction with plastic tanks, this crossflow radiator includes plated engine and transmission oil cooler circuits where originally equipped. The core measures 28 1/4 inches high by 17 1/4 inches wide by 5/8 inch thick, with a 1-row core design and 1 5/16 inch inlet and 1 9/16 inch outlet connections.

Key Features

• Fits 1996-2005 Chevrolet Astro and 1996-2005 GMC Safari
• OSC part number 2003
• OE-style radiator design for factory form and function
• Premium aluminum core with plastic tanks
• Crossflow layout with plated engine oil cooler and transmission oil cooler
• Die-cut gasket design for leak resistance
• Individually pressure tested during production
• Multi-fit engineering for proper fit and appearance

Detailed Description

OSC 2003 is a replacement radiator engineered to match original equipment cooling layout on Chevrolet Astro and GMC Safari vans. The unit uses premium-grade aluminum tubes and fins, with plated cooler passages and factory-style fittings to maintain the original cooling system configuration. OSC also uses engineering updates such as increased fin density and enhanced core design to address heat load and durability concerns in higher-mileage vehicles.

This part cross-references Spectra Premium CU1786 and Koyorad A2003 for the same application.

What This Radiator Helps Address

• Overheating caused by a restricted or aging radiator core
• Coolant leaks from worn tanks, seams, or gasket surfaces
• Transmission temperature concerns tied to a failing cooler circuit
• Engine oil cooling issues where the original radiator included an oil cooler
• Reduced cooling efficiency from corrosion, clogging, or internal wear

Installation Notes and Tips

Verify radiator dimensions, inlet and outlet sizes, and cooler line routing before installation. This radiator is a crossflow design and does not include a cap. Confirm that the vehicle uses the original engine oil cooler and transmission oil cooler configuration before replacement. For best results, flush the cooling system and inspect hoses, clamps, and cooler lines during service.

Quality Assurance

OSC tests the radiator core before assembly, then tests the engine and transmission oil coolers prior to installation into the tank, and performs a final pressure test after assembly. Components are fitted and torqued to factory specifications to support consistent OE-style performance. Part number 2003 is built to meet original cooler design requirements where the vehicle was equipped with plated coolers.