Originally Posted by FOG
Just sold my Perkins T6.354 and don't remember the part number or the diameter of the turbo. But once you know the O.D. of the turbo you can look up the I.D. of the filter neck on the K&N website. I would also check what length and diameter you need for clearance.
They make great filters. I also use them on my off-road sand car.
Just a note here....I put a K&N on my Cummins (that I repowered with) and the neck was not strong enough to support the filter. It broke after only a couple of engine hours.
Then I switched to a S&B filter (recommended by Tony Athens of boatdiesel). They have much thicker/stronger neck that lasted. The S&B is a K&N clone and is cleaned the same way.
Just pointing out that you may need a support to keep the neck of the K&N intact.