CSF 3261 Radiator

CSF 3261 Radiator Overview

The CSF 3261 radiator is an OE-style replacement built with a plastic tank and aluminum core for the 2006-2011 Chevrolet HHR. Its cross-flow design, quick-connect oil cooler fittings, and 1-row construction support factory-style cooling performance in a direct-fit layout.

CSF’s 1 Row Plastic Tank Aluminum Core product line focuses on radiator designs that match original equipment dimensions and connection points. For Chevrolet HHR cooling system service, CSF 3261 provides a practical replacement option with the core and tank materials commonly used in OE applications.

Key Features

• Fits 2006-2011 Chevrolet HHR, N/A
• CSF part number 3261
• 1-row cross-flow radiator design
• Plastic tank and aluminum core construction
• Core thickness: 7/8 in.
• Inlet diameter: 1 3/8 in. right; outlet diameter: 1 3/8 in. left
• High-efficiency plate-type oil cooler with quick-connect fittings
• OE-style dimensions for factory replacement use

Detailed Description

Built for the Chevrolet HHR, CSF 3261 is a radiator assembly designed around OE-style fitment and cooling layout. The aluminum core helps transfer heat efficiently, while the plastic tanks follow the original equipment style used on many factory radiator applications. With a cross-flow configuration and 1-row core, this radiator is suited to direct replacement service where maintaining stock cooling system geometry matters. The unit measures 21 11/16 in. core length and 17 1/4 in. core width, with a 7/8 in. core thickness. It also includes a high-efficiency plate-type oil cooler and quick-connect oil cooler fittings for the listed application. This part cross-references Spectra Premium CU2850 and APDI 8012850 for the same application.

Common Cooling System Issues Addressed

• Cracked or leaking radiator tanks
• Corrosion or damage in the radiator core
• Restricted coolant flow from an aging radiator
• Transmission or oil cooler connection wear at the radiator
• Overheating caused by reduced heat dissipation

Installation Notes and Tips

Verify inlet and outlet orientation before installation: inlet is on the right and outlet is on the left. Confirm the vehicle uses the listed 2006-2011 Chevrolet HHR application and compare the OE-style dimensions, including core size and hose connection points, before removal of the original unit. Inspect hoses, clamps, and coolant condition during radiator replacement to help complete the cooling system service correctly.

Quality Assurance

CSF states that its factories are ISO/TSO certified and that its radiators are engineered and wind tunnel tested for cooling performance validation. The brand also notes more than 50 years of radiator manufacturing experience and a broad catalog of applications supplied worldwide.