Terrafirma Performance Air Filter For Discovery 4 TF391 PHE000112

• Equivalent to PHE000112

Foam air filters and fully serviceable and provide maximum airflow.

As used by some of the world’s top engine builders, Terrafirma foam air filters are produced by Pipercross, leaders in foam filter technology.

The filters are a direct replacement for the original paper element giving 30% more air flow and a lifetime washable air filter without an increase in induction sound. When airborne dirt particles are trapped by a standard paper or cotton filter, there is a reduction in air flow and power. With the high-performance deep foam construction of the Terrafirma foam filter air is able to bypass the trapped dirt. Independent testing at MIRA has proven that Pipercross foam has the ability to hold more than twice the dust particles than that held by other types of filters without effecting air flow. When the Terrafirma foam filter finally reaches its full dust capacity, it can easily be cleaned using the cleaning solution and re-oiled as required. Servicing could not be easier.

The high-performance foam is a specially developed polyurethane foam which acts as the filtration medium, having both a higher performance and life expectancy than paper. The triple layers filter through course to fine trapping dirt particles in the outer layers as they enter the filter, the inner layer provides an exceptionally high level of filtration and engine protection.

For vehicles with exceptional engine performance requiring super high flow air intakes the Pipercross PLUS Panel is for you. The radical new foam and stainless steel frame design flows 22.1% more air over the Standard Panel. Using a 2-layer construction which consists of a 5mm 60PPI (Pores Per Inch) layer & a 20mm 20PPI Layer it also has better dirt retention qualities & is the premium offering.