Spectre Performance 9731DK Air Filter Wrap, 1 Pack

Good

I may have no gotten the exact dimensions but for the price I paid I feel like they should have sent at least 2-3 pieces as they are easy to rip.

Barely fit over K&N system 57-6005 (K&N filter RX-4750, see photo) but it fit great once it's on!

Lo compré para un Mustang, le quedó un poco grande, pero la resistencia de la bolsa es genial.

ممتاز ومرتب وخياطه جيده ويركب على الفلتر الكبير على طول

Was shocked to see people with 4 cylindres use this as it's like 4 times the air travel capacity of à regular size round filter. This was perfect for à hemi v8.

Spectre has several cone filters but the 8.75" length/height cones seem to all have the same taper. I have the 9732 filter and this cover fits perfectly. I did some tests with water on the cover but not on the filter so I could see what passed thru. I also tested this from a vertical point, not from the side or below. If it takes a direct hit, it will pass thru. Rain drops (tested with sprinkling water on the cover) did not get thru and pool up. Gentle splashes mostly pooled up but some got thru. Considering the results and a real world application, this should deflect most water since the hood and overall engine bay will not allow a direct hit. Mine is a bit more open from the bottom but I'd be comfortable with water splashing it from about 1 foot or more away. Any less and I'd have to be careful/considerate. All in all the fitment, function, and price are all appropriate. I'll def order another as a backup since I live in the AZ desert. Pro Tip: If you don't tailgate, you don't get dusted out as much ;)