BorgWarner EFR-6258 turbocharger

Genuine EFR-turbocharger

Single Scroll, T25 internal wastegate

Performance rating: 225 – 400HP
compressor wheel inlet: 49,6mm, outlet 61,4mm
turbine wheel outlet: 58mm
turbine housing : 0.64 A/R with T25 flange, internal wastegate, V-band downpipe connection

Pictures for reference only!

BorgWarner EFR turbocharger has been developed with only one goal in mind: to dominate road, racetrack and quartermile. BorgWarner EFR turbocharger are equipped with state of the art high-tech features for unbeaten performance.
EFR Turbos are available in 7 different sizes and 4 different turbine housings, covering performance ratings from 250 to 1000HP.
The combination of a high-efficiency compressor wheel, Gamma-Titanaluminid turbine wheel, with ceramic ball bearing technology dramatically raises the bar for motorsports turbochargers and is state of the art in terms of turbocharger technology:

Compressor:
– forged and milled compressor wheel, extremely lightweight and resistant to highest boost levels, Extended tip technology
– integrated blow off valve
– integrated boost solenoid
– 360° rotation via V-band technology
– prepared socket for speed sensor (optionally available) to monitor compressor wheel speed. Thereby compressor efficiency can be calculated.

Core assembly:
– dual ceramic ball bearing
– integrated oil restrictor
– water cooled

Turbine housing:
– stainless steel turbine housing
– Gamma-Titanaluminid turbine wheel and shaft, 50% lighter than comparable Inconel turbine wheel and extremely heat resistant up to 1050°C (for comparison: Garrett only up to 950°C)
– high-flow wastegate port
– internal wastegate (even available for Twinscroll turbine housing!)