Introducing the BMW 3 Series Radiator by CSF, a high-performance all-aluminum radiator featuring B-Tube Technology for `99-`06 models. This radiator is engineered to optimize cooling efficiency and ensure your engine stays at its peak performance, whether you're hitting the streets or dominating the racetrack.

Built with a 2-Row core, this CSF radiator utilizes the proprietary B-Tube Technology. Unlike traditional "O" type radiator tubes, CSF’s B-tubes are designed to enhance heat exchange using a unique shape that increases surface area by approximately 15%, leading to highly efficient dual liquid laminar flow. Constructed with thinner and lighter aluminum material, this radiator not only offers superior strength but also boosts cooling efficiency. CSF incorporates ultra-efficient multi-louvered fins, precisely aligned for maximum airflow and tested in wind-tunnel labs to ensure optimal heat rejection.

Features

• Drop-in Fit: No modifications necessary; installs in OEM locations.
• Compatibility: Fits 99-06 BMW 3 Series and 03-05 BMW Z4 models.
• 2-Row Core: Featuring 42mm Dual Core with CSF’s B-Tube Technology.
• CNC Machined: Brackets and fittings for perfect fit and durability.
• Quick-Connect: Inlet/Outlet connections compatible with OEM or aftermarket hoses.
• Smooth Satin Finish: Offers a refined, sleek look.
• All-Aluminum: Provides excellent heat dissipation and durability.

This radiator is designed as a "Drop-in fit" with CNC machined brackets ensuring robust installation. For any questions or additional information, feel free to reach out to us. We offer installation and customization services at our Austin, Texas, and Los Angeles, California locations. Contact us at 512-982-9393 (TX) or 562-981-6800 (CA). If you're considering purchasing multiple items, reach out to us for potential shipping discounts. Installation is available on-premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov