K&N Oil FilterHP-4001

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Thanks to construction, K&N oil filters have gained recognition of the most demanding drivers and are one of the few used in competitive motorsport. These filters are distinguished by a filtration layer that does not limit oil flow.

The advantages of filters are:

Strengthened construction of external walls reducing the risk of mechanical damage
Head for easy filter operation using standard flat keys
Hole in the head, enabling the cotter pin to be required in many motor sport disciplines.

An additional advantage is the internal valve closing the flow after a pressure drop, which protects the engine against dry starting.

The K&N sports oil filters are an ideal solution for all users of cars that care about the efficiency and safety of their engine and are looking for the highest quality products.

Specification:

Anti Drain Back Valve: Yes
Bypass valve: Yes
Seal material: Nitrile
Height: 129 mm
Outer diameter: 76 mm
Thread: M20 x 1. 5

Filter HP-4001 is dedicated for listed below vehicles:

Year from	Year to	Make	Model

1991	1992	Porsche	911 3. 3L H6 Fuel Injection - All Models
1994	1994	Porsche	911 3. 6L H6 Fuel Injection - Turbo
1987	1988	Porsche	924 2. 5L L4 Fuel Injection - All Models
1983	1989	Porsche	944 2. 5L L4 Fuel Injection - All Models
1989	1989	Porsche	944 2. 7L L4 Fuel Injection - All Models
1989	1991	Porsche	944 3. 0L L4 Fuel Injection - All Models
1988	1988	Porsche	944 S 2. 5L L4 Fuel Injection - All Models
1992	1995	Porsche	968 3. 0L L4 Fuel Injection - All Models