K&N X-Stream Top Filter X-Stream 16in OD - Black Suspension>Coilover Springs Each hat is precision machined

Each hat is precision machined from premium grade aluminum offering high strength with low unsprung and rotating weight

The oil was coming from the PCV system

and bright red splattered on every surface

When a vehicle is extensively modified or used in high stress driving conditions

ISR Performance Thermostat - Nissan VQ35DE - 68 Degree

K&N X-Stream Top Filter X-Stream 16in OD - Black Suspension>Coilover Springs Each hat is precision machinedK&N XStream Air Flow Tops replace the top of your existing round filter and add a new dimension to engine breathing by feeding your engine all the air it can use. They are washable and reusable just like other K&N Air Filters. Installation Instructions