Brand new in box. Perfect stock replacement fit. Fast shipping. Saved money. Best part is it increased my fuel mileage (Ford F550 6/7L Diesel 36' motorhome) by 1 mpg! Now that might not sound like much, but when you are used to getting 9 - 9.5 and you see 10.5+ by changing an air filter, well, to me, that's good news.