CTB-19ST FK Stainless Steel Constant Tension Band Hose Clamp - 3/4" Hose OD (Pack of 10) - Perfect for Automotive, Marine & Industrial Plumbing Applications

These are excellent, OEM quality replacement clamps. These constant tension clamps will allow the hose to swell a little bit when it heats up, then continue to clamp it well as it contracts. That happens thousands of times during the life cycle of the clamp. These clamps are very strong and require strong pliers to open. If you are right between sizes, I recommend ordering the larger size. Twice now I have ordered the clamps based on my measurements of the OD of the hose I was using and had to reorder a larger size. The issue is the flare on the end of the metal hose you place the hose on. What you really need to measure is the OD of the hose as it sits on the flare, because your clamp will need to clear that. In my case, I ordered the 7/8" clamp for some Gates Green Stripe 1/2" ID hose because the OD measures exactly 7/8". They were slightly too small to clear the flare, so I had to reorder the 15/16" clamp, which works perfectly. These clamps are outstanding once you get your size correct. They are far superior to the standard owner mechanic style worm clamp, which can loosen over time, does not allow the hose to swell, and can cut the hose with the screw marks in the band. These are far better, which is why you seem them as original equipment from the automakers.