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This BorgWarner replacement compression spring is specified for K42 EFR turbocharger service, listed as a blue/blue cyl. compression spring. It serves as a service part used when rebuilding or maintaining BorgWarner K42 EFR turbos, allowing technicians to replace the factory spring during refurbishment or repair procedures where an OEM-style spring is required.
BorgWarner Turbocharger K42 EFR Replacement Cyl. Compression Spring Blue/Blue
