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Get the Right Fit: 3/4-Inch Fan Belt for Austin Healey 100

Posted: Thursday, 22 May 2025 @ 16:44

Austin Healey BN1 and BN1 correct width fan belt

Engineered for a Perfect Pulley Fit

We’ve all been there—installing a new fan belt that should fit, only to realise it rides too low in the pulley. That’s not just an aesthetic issue. It affects performance, causes slippage, and shortens belt life. The culprit? A belt that’s too narrow.

For Austin Healey 100 BN1 and BN2 models, the correct fan belt width is 3/4 inch—not the slimmer versions often sold as one-size-fits-all.

Here at A H Spares, we’ve produced a belt to the original specification, ensuring it sits flush in the pulley groove like it’s meant to. Because when it comes to keeping your Healey running cool, details matter.

Close up of the correct fit fan belt
Austin Healey 100 engine with the correct width fan belt fitted

Why Correct Width Matters


  • No more low-riding belts – sits properly in the pulley groove
  • Better grip, less slip – consistent drive to your water pump and generator
  • Authentic fit for BN1 and BN2 – not a guesswork match
  • Reduced belt wear – proper fit means longer life
  • Smoother operation – less vibration, more peace of mind

Don’t Settle for Close Enough—Shop the Correct Fan Belt

 
 

Want Even Better Cooling Performance?

If you're already upgrading your fan belt, it's the perfect time to take a closer look at the rest of your cooling system. Enter two game-changing upgrades:

Premium Water Pump - NEW - 3/4" Pulley

Premium Water Pump – CAD Designed Precision

Our Premium Water Pump for your Austin Healey 100 isn’t just a reproduction—it’s the result of modern CAD design and engineering, built to outperform the originals. With improved internal flow and tighter tolerances, this pump offers:

  • Enhanced coolant circulation
  • Precision-machined housing
  • Longer-lasting internals
  • Direct fit with 3/4" pulley

It’s perfect for Healey owners who want reliability without compromise. (And let’s be honest—coolant leaks on the driveway are only charming once.)


Austin Healey 100 Cooling Fan - 5-Blade Harmonically Balanced | BN1 & BN2

5-Blade Harmonically Balanced Cooling Fan

While you’re there, don’t forget the 5-blade plastic fan—a harmonically balanced upgrade that reduces vibration and dramatically improves airflow over the standard metal unit. It’s quieter, lighter, and more efficient. Your engine—and your ears—will thank you.


Final Thoughts

There’s a reason we focus on details like this—because your Healey deserves better than “close enough.” So, whether you're on the concours circuit or just out for a weekend spin, fitting the correct 3/4-inch fan belt, a precision-engineered water pump, and a harmonically balanced cooling fan is a small trio of changes that delivers a big result.

Order from A H Spares and give your Healey the precision it was born with.

 
 
 
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