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The BorgWarner EFR Super Core B1 6758 is a replacement internal core assembly for EFR-series turbochargers with the B1 6758 designation. It provides the rotating assembly used when rebuilding or servicing an EFR unit and allows renewal of internal components without replacing external housings. Use this super core to restore the internal specification tied to B1 6758.
BorgWarner Super Core EFR B1 6758
