BorgWarner 59001156317 EFR Compressor Recirculation Valve Diaphragm

The BorgWarner 59001156317 is a replacement diaphragm for the Compressor Recirculation Valve (CRV) used on BorgWarner EFR (Engineered For Racing) turbochargers. This critical component is part of the integrated bypass system built into EFR compressor housings, functioning as an internal blow-off valve that recirculates compressed air back into the turbo inlet.

Key Features:

• Genuine BorgWarner replacement diaphragm/membrane for EFR turbocharger CRV systems
• Designed to vent boost pressure quickly and efficiently when the throttle closes
• Helps maintain turbo speed during shifts for faster response
• Keeps MAF sensor-equipped engine management systems stable during recirculation events
• Lightweight construction at approximately 0.06 lbs
• Direct replacement for worn or damaged CRV diaphragms

The CRV system is an integrated feature found on BorgWarner EFR turbochargers, borrowed from OEM applications used in vehicles ranging from Ford Focus ST to F-150 models. This diaphragm is a serviceable wear component that ensures proper CRV operation, which is essential for preventing compressor surge, maintaining turbo efficiency, and keeping electronic engine controls functioning properly during throttle transitions.