One Stop Solutions 2284 Radiator

OE-Style Cooling Replacement

One Stop Solutions 2284 is a premium replacement radiator built for direct-fit service on select BMW applications. It is engineered around OES form and function, with a crossflow design, plastic tanks, and a PA core to support consistent cooling performance in daily driving.

Fits 2006 BMW 545i, N/A. Fits 2001-2003 BMW 525i, N/A. Fits 2001-2003 BMW 530i, N/A. Fits 1999-2000 BMW 528i, N/A.

Key Features

• Premium-grade aluminum construction with cadmium-plated tubes inside and out
• Crossflow radiator design with 25 1/2 in. core height and 17 1/4 in. core width
• 1-1/4 in. core thickness and single-row core layout
• 1 1/2 in. inlet and outlet diameters for OE-style hose connection sizing
• Plastic tank construction with die-cut gasket sealing
• No engine oil cooler and no transmission oil cooler included
• Individually pressure tested during production
• Multi-fit engineering with factory-style fit and finish

Detailed Description

This One Stop Solutions radiator, part number 2284, is built for BMW 5 Series cooling system service where OE-style fitment and dependable heat transfer matter. It uses premium materials and factory-spec component placement to help maintain proper coolant flow and thermal control. The design includes a PA core, plastic tanks, and a crossflow layout, along with fittings and hardware specified by the manufacturer for the unit.

For BMW 528i, 525i, 530i, and 545i applications, part number 2284 is engineered to match original radiator dimensions and connection points without changing the look or fit of the vehicle. This part cross-references Spectra Premium CU2284 and Four Seasons 55321 for the same application.

Common Cooling System Issues

• Coolant leaks from a cracked or aging radiator tank
• Overheating caused by restricted heat transfer through a worn core
• Fitment problems from a damaged or incorrect replacement radiator
• Reduced cooling efficiency in higher-mileage BMW 5 Series vehicles
• Seal failure at the radiator connection points

Installation Notes

Verify radiator dimensions, inlet and outlet sizing, and cooler configuration before installation. This radiator does not include an engine oil cooler, transmission oil cooler, or cap. Follow factory service procedures for coolant draining, hose inspection, and system bleeding to complete the repair correctly.

Quality Assurance

OSC radiators are tested during production, including cooler checks before tank installation, core testing before assembly, and a final assembled-unit pressure test. The design also incorporates engineering updates aimed at addressing common failure points found in higher-mileage vehicles.