Onix OR2635 Radiator

OE-Style Radiator for BMW Cooling Service

The Onix OR2635 radiator is an OE-style replacement built with a plastic tank and aluminum core layout for direct-fit cooling service. It is designed for BMW applications including the Z4, 323i, 325Ci, 325i, 325xi, 330Ci, 330i, 330xi, 323Ci, 328Ci, and 328i.

Onix’s 1 Row Plastic Tank Aluminum Core line focuses on factory-style construction and fitment, making this radiator a practical choice for BMW 3 Series and Z4 cooling system repairs.

Key Features

• Part number OR2635
• 1-row radiator design
• Plastic tank construction with aluminum core
• Cross-flow layout
• Core dimensions: 22 13/16 in. length, 17 5/8 in. width, 1 1/4 in. thickness
• Top hose fitting: 1 1/2 in. left
• Bottom hose fitting: 1 1/2 in. right
• Inlet and outlet: 1 5/8 in. x 18 1/8 in.
• Radiator cap not supplied

Detailed Description

The Onix OR2635 radiator is built for BMW cooling system replacement where OE-style dimensions and hose placement matter. Its cross-flow design, aluminum core, and plastic tanks follow a factory-type configuration for vehicles that require a direct replacement radiator with the correct inlet and outlet sizing. The OR2635 is a fitment-based solution for BMW Z4 and BMW 3 Series models, including 323i, 325Ci, 325i, 325xi, 330Ci, 330i, 330xi, 323Ci, 328Ci, and 328i applications across the listed model years.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Coolant leaks from a damaged radiator tank or core
• Overheating caused by restricted or failing radiator flow
• Cracked plastic end tanks from age and heat cycling
• Corrosion or internal wear in the cooling passages
• Cooling system service on BMW Z4 and BMW 3 Series vehicles

Installation Notes and Tips

Verify hose fitting orientation, core size, and mounting dimensions before installation. This radiator uses a 1 1/2 in. left top hose fitting and 1 1/2 in. right bottom hose fitting, so matching the original routing is important for proper installation. The radiator cap is not supplied, so reuse or replace the cap separately as needed. Always inspect hoses, clamps, and coolant condition during radiator replacement.

Quality Assurance

Onix 1 Row Plastic Tank Aluminum Core radiators are built to OE-style specifications for direct replacement use in the listed BMW applications. Part number OR2635 is intended for buyers seeking a factory-style radiator solution for BMW cooling system repair.