What size radiator hose clamps do I need?

Answered by Jeremy Urbaniak

When it comes to choosing the right size radiator hose clamps, it’s important to consider the internal diameter of your hose. This will determine the size of clamp you need to securely fasten the hose to your radiator.

To find the correct size, you can measure the internal diameter of your hose with a caliper or ruler. Once you have this measurement, you can refer to a sizing chart or consult with a professional to determine the appropriate clamp size.

There are two common types of clamps that are often used for radiator hoses: hose clips and T-bolt clamps. Hose clips are typically made of stainless steel and have a screw mechanism that tightens the clamp around the hose. T-bolt clamps, on the other hand, have a bolt and nut design that provides a more secure and adjustable fit.

For hoses with an internal diameter of 9.5mm, the recommended clamp size would be 11 – 16mm for hose clips and 11 – 20mm for T-bolt clamps.

If your hose has an internal diameter of 13mm, you would need a clamp size of 13 – 20mm for hose clips and 13 – 25mm for T-bolt clamps.

For hoses with an internal diameter of 16mm, the recommended clamp size would be 18 – 25mm for hose clips and 23 – 25mm for T-bolt clamps.

If your hose has an internal diameter of 19mm, you would need a clamp size of 22 – 30mm for hose clips and 29 – 31mm for T-bolt clamps.

These are just a few examples, and there are many other sizes available depending on the specific internal diameter of your radiator hose.

It’s important to choose the right size clamp to ensure a secure and leak-free connection between your hose and radiator. Using the wrong size clamp can result in loose connections and potential coolant leaks.

In my personal experience, I once had a radiator hose that was not properly secured with the correct size clamp. As a result, coolant started leaking and I had to replace the hose and clamp. Since then, I always make sure to measure the internal diameter of my hoses and choose the appropriate clamp size to avoid any issues.

When selecting the size of radiator hose clamps, it’s crucial to measure the internal diameter of your hose and choose a clamp size that matches it. This will ensure a secure and tight connection, preventing any coolant leaks.