Join Date: Jul 2017
Location: SW Missouri USA
If you have the Pro Design billet adaptor, your inside diameter should be 3 1/2".
I looked over and measured the filter from my Pro Design kit and came up with this filter for you directly from the K&N site.
The part number molded into the rubber cap on mine is the same part number you can see in this pic (3rd one on the page) where it shows the top of the filter.
You need to zoom your screen a little bit, but you can see the number is B034A6, which is what my filter is.
I want to thank you all again. The K&N RU-3130 fits perfectly on the Pro-Design adapter.
I was a little worried when I noticed the milling was off center in the adapter. It appears that the filter side was milled off-center from the intake side. After searching a bit I noticed this was common for that adapter.
Thank you! You saved me $30 and i was able to buy the filter at my local auto parts store instead of ordering it
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07' Raptor 700- 11:1, hotcam 3, Pro design intake with K&N, +3 throttle body, Monster big bore duals, MSD with cuervo timing, JOGACA shocks, trail tech VAPOR, GYTR heel guards & bumper & nerfs, .250 aluminum skids, TM case saver, folding anodized levers and shifter, powermadd hand guards
04' raptor 660-Hot rods crank, .5mm overbore, 11:1 wiseco piston, Stage 1 hotcam, Yoshimura slip-on exhaust, K&N filter with outerwears, open lid airbox, Dynojet stage 2 jet kit