K&N Auto Racing Filter (28-4235) BMW Z3 PFF5-5601-60 is a high-performance option

PFF5-5601-60 is a high-performance option to PFF5-4601-60

Right Side

Blow Off Adaptor

analogue input 2 (blue wire - can read any 0-5 volt linear output sensor)

The construction of the hoses has been engineered to exceed that of the OEM fitments

K&N Auto Racing Filter (28-4235) BMW Z3 PFF5-5601-60 is a high-performance optionThis K&N racing air filter is made with 2 layers of cotton and does not come oiled. It was designed to provide even lower air restriction than our replacement air filters for street vehicles. K&N racing air filters are washable and reusable and come with a one year limited warranty. Designed to increase horsepower and acceleration Designed for racing applications Washable and reusable lifetime air filter Dual cotton layers One year limited warranty