Moroso Air Oil Separator Kit Small Body Black Subaru WRX 2015-2021 Vehicle Model_NSX Subaru rod bearings are specific

Subaru rod bearings are specific to either a 48mm or 52mm journal size

Drop in style fitment

Most aftermarket Subaru exhaust systems need a 3 inch

5'' brushed stainless steel construction

For additional performance

Moroso Air Oil Separator Kit Small Body Black Subaru WRX 2015-2021 Vehicle Model_NSX Subaru rod bearings are specificPart: # 85673 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