I previously wrote a review on this hose, but here we go, I needed to replace the upper hose on my 2007 Nissan 350z after replacing my radiator w/a aftermarket performance radiator. Well, the stock hose became to short, approx. 13' oem. The mouth of the upper radiator was further left approx. 15-16"..this hose at 17" was the ticket..1.25inch in diameter it fit perfectly and I'm running that baby! I recommend this Dayco Flex hose.I previously wrote a review on this hose, but here we go, I needed to replace the upper hose on my 2007 Nissan 350z after replacing my radiator w/a aftermarket performance radiator. Well, the stock hose became to short, approx. 13' oem. The mouth of the upper radiator was further left approx. 15-16"..this hose at 17" was the ticket..1.25inch in diameter it fit perfectly and I'm running that baby! I recommend this Dayco Flex hose.