Fits my 2014 E-450 v10 perfectly..I crossed the ford number with K&N and this was it even though amazon came up wouldn't fit but it's because K&N doesn't list a filter for my application just a cold air inlet. I've used K&N for 30 years, hard to spend that much but it's the last one you'll ever buy so may as well bite the bullet now. Can't say I've noticed an improvement in this application but my truck is heavy and I'm sure it will pay off in the long run it always has. Just never again buying an air filter at the very least will pay for itself. Shipped fast