Full Function Engineering FD3S Idler Pulley Kit 6.2L 250 rpm when tested on

250 rpm when tested on the Akrapovič dyno against a Porsche 718 Cayman GT4 RS with a standard stock exhaust

- Silver Finish

Constructed from high-grade lightweight titanium alloys

For Impreza STI WRX Forester EJ20 EJ25 EJ255 EJ257

Full Function Engineering FD3S Idler Pulley Kit 6.2L 250 rpm when tested onDescription FFE FD3S Idler Pulley kit Increase contact area on water pump pulley when removing air pump for emissions removal or single turbo setup. DOES NOT INCLUDE BELT Fitment: 93 02 13B REW Features: Compatible with stock accessories 6061 T6 anodized aluminum All required 18 8 stainless steel hardware OEM quality pulley sized for high RPM applications NOTE: Using this kit with stock FD3S crank and alternator pulleys requires 5PK1005 belt