One Stop Solutions HD9143 Radiator

Heavy-Duty Cooling Replacement

This OSC Automotive Products radiator, part number HD9143, is built for heavy-duty cooling applications that require OE-style fit, form, and function. It is engineered for commercial trucks that need dependable heat transfer and a direct replacement layout.

• Drop-in radiator design for straightforward replacement.
• Plastic and aluminum core construction for balanced strength and cooling performance.
• Single-row core layout with a 35-7/8 in. core height.
• 2 in. inlet and 2-1/4 in. outlet sizing for matched hose connections.
• Header style uses 4-crimp strips over the tabs for secure assembly.
• Includes stainless steel transmission oil cooler material.

Fitment Details

Compatible with heavy-duty Chevrolet and GMC truck applications. Fits 1997-2002 Chevrolet C6500 Kodiak, N/A; Fits 1997-2002 Chevrolet C7500 Kodiak, N/A; Fits 1997-2002 GMC C6500 Topkick, N/A; Fits 1997-2002 GMC C7500 Topkick, N/A; Fits 1991-1996 Chevrolet C60 Kodiak, N/A; Fits 1991-1996 Chevrolet C70 Kodiak, N/A; Fits 1991-1996 GMC C6000 Topkick, N/A; Fits 1991-1996 GMC C7000 Topkick, N/A; Fits 1991 Chevrolet C5500 Kodiak, N/A; Fits 1991 GMC C5000 Topkick, N/A.

What This Radiator Helps Address

• Overheating caused by reduced coolant flow or heat rejection.
• Cooling system wear in high-mileage commercial trucks.
• Replacement needs after core damage, leaks, or corrosion.
• Fitment issues when an OE-style radiator is required.
• Transmission cooling service where the radiator includes TOC provisions.

Installation Notes

Verify core dimensions, inlet and outlet sizes, and TOC requirements before installation. This part cross-references Dorman - HELP (e.g., 20771) for the same application. Part number HD9143 should be matched to the vehicle’s cooling system configuration and header style before removal of the original unit.

Quality Assurance

OSC Automotive Products states that this heavy-duty radiator is engineered to meet or exceed OE specifications and is tested during production for cycle, vibration, burst, and environmental durability. The brand also emphasizes quality control and research-driven product development.