Moroso Air Oil Separator Subaru STI 2008-2014 50 Greatly reduce the transfer of

Greatly reduce the transfer of heat from engine to intake manifold thus reducing its temperature and heat soak

include heatshielding for the MAF sensor

and a proprietary outer CV with a larger spline

T42005 Cam Idler Pulley

Gauge face is smoked out when off

Moroso Air Oil Separator Subaru STI 2008-2014 50 Greatly reduce the transfer ofPart: # 85510 From the factory excess crankcase vapors, residual oil and moisture are vented back into the intake manifold and crankcase ventilation system. This can coat the pistons and everything else with a detonation prone layer of oil. This is no good in a turbocharged vehicle. Moroso has come up with a 2 tank system that allows the factory crankcase ventilation to operate how it was designed. No other system on the market does this. Billet