no aslong as it's still flexible and intact (they tend to go brittle due to the heat and crack, venting boost) it should still slip over the new one, although if you're going for a forge its a tight fit so you might want to put a bit of washing up liquid around the top nipple or sit the hose in a cup of hot water for a few minutes. you don't necessarily need to put a clip on it, although i did just for peace of mind.