The dark finish is due to the temp and duration of processing for a deeper hardness. Rebuild your motor using Subaru's finest.
Have been told can be used in any EJ25 2.5 as a direct replacement. Direct Fit For All EJ257 & EJ255 Engines
Through nitriding , surface hardness is doubled on the Rockwell scale, and fatigue life is increased by 25 percent .
The crank is nitride treated to be extremely hard and reduce the chances of wear and damage from foreign material
Need a Genuine Subaru Genuine Crankshaft for your Subaru. Your package will include oem sealed items. The package will include STI Crankshaft 12200AA430 X1 You get the same genuine one that is in the picture. The 12200AA430 crankshaft from Subaru is their latest and greatest factory EJ crankshaft. The crank is nitride treated to be extremely hard and reduce the chances of wear and damage from foreign material. Through nitriding , surface hardness is doubled on the Rockwell scale, and fatigue life is increased by 25 percent . The dark finish is due to the temp and duration of processing for a deeper hardness. Rebuild your motor using Subaru's finest. Don't settle for aftermarket components of questionable quality and always insist on Genuine Subaru replacements. Fits: 2009-2018 WRX STi EJ255 EJ257 2009-2013 Forester XT EJ255 2010-2012 Legacy GT EJ255 2006-2007 Legacy and OUtback turbo 2006-2007 Forester turbo 2006 Impreza ALL 2006 STI 2006 WRX Have been told can be used in any EJ25 2.5 as a direct replacement Can be used in any EJ25 2.5L engine as a direct replacement. Direct fit for all EJ257 and EJ255 engines Brand new Induction Hardened Crankshaft was released 7/2012 and replaces the old 2009-2012 crankshaft. 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 subaru