K&N Performance oil filters Specially made according to motorsport specifications, K&N® uses a special synthetic filter material developed , to handle highly concentrated synthetic motor oils. The large surface area of the filter material enables high flow and excellent filtration performance. Ideal for street or racing use. These quality oil filters guarantee that your engine will keep running clean and smooth.1.17mm nut for single feed mounting* pre-drilled for safety wire attachment*2. Heavy steel body provides higher pressure resistance available in black and chrome*3.Specially designed for today's synthetic engine oils, synthetic filter material provides excellent filtration performance at high flow rates.4. Reinforced base plate with double rolled seal*5. Greased base seal** If required.