1966 Mercury S-55 Performance Radiators

Keep Your 1966 Mercury S-55 in Top Shape with a Quality Performance Radiator

When it comes to maintaining or upgrading your 1966 Mercury S-55, choosing high-quality parts is crucial for ensuring your vehicle stays in top shape, whether you’re tackling a repair or enhancing performance. At Advance Auto Parts, we know how important it is to find the right Performance Radiator for your S-55. We currently carry a top Performance Radiator in stock that is built to last. Whether you’re replacing a damaged Performance Radiator or looking to upgrade, our selection for the 1966 Mercury S-55 ensures you’ll find exactly what you need to keep your vehicle looking and performing its best.

Explore Related Parts

And while you’re here, don’t forget to check out related part categories like Performance Fuel Systems and Performance Ignition Products to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 1966 Mercury S-55 running smoothly and looking great.

Most Popular Performance Radiator Cap for 1966 Mercury S-55s

Enhance your 1966 Mercury S-55 with this popular Performance Radiator Cap we have in stock, for $54.99.

Mr. Gasket – Thermocap Radiator Cap (Part No.2470B)

Thermocap Radiator Cap

from

$54.99
The fastest, easiest way to know exactly when it’s safe to open your radiator cap. ThermoCap, with its built-in calibrated thermometer, indicates the coolant temperature.

Product Features:
  • Indicates coolant temperature
  • Helps prevent coolant injuries
  • Fahrenheit and centigrade readings
  • Color-coded temperature ranges
  • Integrated coolant reclamation valve
  • Improves under-hood appearance
  • Chromed crown with a colored trim ring
See More

FAQs for 1966 Mercury S-55 Performance Radiators

What’s the price range for 1966 Mercury S-55 Performance Radiators?

We currently have just one Performance Radiators for the 1966 Mercury S-55 in stock: Thermocap Radiator Cap and it costs $54.99.

Does Advance Auto Parts sell Performance Radiators for any other 1966 Mercury models?

Yes. We stock Performance Radiators for 8 other popular 1966 Mercury models. Some of the most popular are 1966 Monterey Performance Radiators, 1966 Colony Park Performance Radiators, 1966 Villager Performance Radiators, 1966 Comet Performance Radiators, and 1966 Cyclone Performance Radiators.

What types of Performance Radiators do you sell for my 1966 Mercury S-55?

We currently have just 1 Performance Radiator in stock for a 1966 Mercury S-55, and as of 11/2/25, it is a Performance Radiator Cap.

Can I get help with 1966 Mercury S-55 Performance Radiator orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mercury Performance Radiators and more.

What is your return policy for Mercury S-55 Performance Radiators?

Advance Auto Parts keeps returns simple. For new Mercury S-55 Performance Radiators and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.