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    CSF Race BMW E8X 135i engine oil cooler

    06-13 135i Convertible E88 N55
    06-13 135i Coupe E82 N55

    Made with CSF’s AC condenser technology using a 1-row super-high pressure 22mm wide 11-channel microtube


    Dual-pass high-performance core with 11 cooling tubes vs. OEM 10 tube design.

    High-density multi-louvered fin design with 20% more surface area contact compared to OEM unit.

    “Drop-in fit” requiring no modifications to install. Accepts all attaching OEM components

    including oil-line connections, mounting brackets, and shroud/ducting

    Lab tested at ~30% more efficient than OEM cooler