1966 Mercury S-55 Automatic Transmission Parts

Keep Your 1966 Mercury S-55 in Top Shape with Quality Automatic Transmission Parts

Whether you’re repairing or upgrading your Automatic Transmission Part, using high-quality parts is key to keeping your 1966 Mercury S-55 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Automatic Transmission Fluid Filler Tube Seals, Transmission Bushings, and Transmission Modulator Valves. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Competitive Prices and Extensive Inventory

The average price for a 1966 Mercury S-55 Automatic Transmission Part at Advance Auto Parts is around $27.78, with a range that starts at $3.99 and goes up to $48.99. With 10 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like AT SHF LINK BUSHING, AT MODULATOR VALVE, and AT MODULATOR VALVE start at just $8.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Automatic Transmission Part, don’t forget to check out other key components like Torque Converter and Related Products and Transmission Cooler and Parts. At Advance Auto Parts, we’re here to help you keep your 1966 Mercury S-55 in peak condition, inside and out.

Essential 1966 Mercury S-55 Automatic Transmission Parts

ATP – AT SHF LINK BUSHING (Part No.FO-405)

AT SHF LINK BUSHING

from

$7.99
AT SHF LINK BUSHING

ATP – AT SHF LINK BUSHING (Part No.FO-300)

AT SHF LINK BUSHING

from

$8.99
AT SHF LINK BUSHING

Dorman – Clutch Pilot Bushing .671 In. x 1.851 In. Type A, Length .503 In. (sold by each) (Part No.690-032)

Clutch Pilot Bushing .671 In. x 1.851 In. Type A, Length .503 In. (sold by each)

from

$11.99
This clutch pilot bushing is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this clutch pilot bushing matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this bushing is a reliable replacement for an original part that has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Carquest Premium – Automatic Transmission Modulator Valve (Part No.VMC1042)

Automatic Transmission Modulator Valve

from

$38.99
The transmission modulator valve is a vacuum operated mechanical device located on the transmission case. This valve will have a actuator rod extended into the transmission valve body inside the transmission which will control the flow of transmission fluid within the transmission to place the transmission in the most optimal forward gear selection.

Product Features:
  • Application matched component ensures the transmission gear position system can be returned to like new condition.
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • This part will look and function just like the original unit being replaced.
See More

ATP – AT MODULATOR VALVE (Part No.FX-102)

AT MODULATOR VALVE

from

$40.99
AT MODULATOR VALVE

ATP – AT MODULATOR VALVE (Part No.FX-80)

AT MODULATOR VALVE

from

$43.99
AT MODULATOR VALVE

Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-18)

Automatic Transmission Vacuum Modulator

from

$33.99
Fully adjustable vacuum modulator to maintain accurate shift points.

Product Features:
  • Meets or exceeds OE fit, form and function
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ATP – AT MODULATOR VALVE (Part No.FX-194)

AT MODULATOR VALVE

from

$48.99
AT MODULATOR VALVE

ATP – AT CLUTCH PLATE (Part No.FC-105)

AT CLUTCH PLATE

from

$7.99
AT CLUTCH PLATE

ATP – AT CLUTCH PLATE (Part No.FC-4)

AT CLUTCH PLATE

from

$13.99
AT CLUTCH PLATE

ATP – AT SOLENOID SEAL (Part No.JO-15)

AT SOLENOID SEAL

from

$3.99
AT SOLENOID SEAL

Most Popular Automatic Transmission Fluid Filler Tube Seal for 1966 Mercury S-55s

Enhance your 1966 Mercury S-55 with this popular Automatic Transmission Fluid Filler Tube Seal we have in stock, for $3.99.

ATP – AT SOLENOID SEAL (Part No.JO-15)

AT SOLENOID SEAL

from

$3.99
AT SOLENOID SEAL

Best-Selling 1966 Mercury S-55 Transmission Bushing

Upgrade your S-55 with our best-selling Transmission Bushing.

Dorman – Clutch Pilot Bushing .671 In. x 1.851 In. Type A, Length .503 In. (sold by each) (Part No.690-032)

Clutch Pilot Bushing .671 In. x 1.851 In. Type A, Length .503 In. (sold by each)

from

$11.99
This clutch pilot bushing is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this clutch pilot bushing matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this bushing is a reliable replacement for an original part that has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
See More

Top-Quality Transmission Modulator Valves for 1966 Mercury S-55s

Choose a high-quality OEM or aftermarket Transmission Modulator Valve for Mercury S-55s and enjoy top-notch performance from $38.99.

ATP – AT MODULATOR VALVE (Part No.FX-102)

AT MODULATOR VALVE

from

$40.99
AT MODULATOR VALVE

ATP – AT MODULATOR VALVE (Part No.FX-194)

AT MODULATOR VALVE

from

$48.99
AT MODULATOR VALVE

Carquest Premium – Automatic Transmission Modulator Valve (Part No.VMC1042)

Automatic Transmission Modulator Valve

from

$38.99
The transmission modulator valve is a vacuum operated mechanical device located on the transmission case. This valve will have a actuator rod extended into the transmission valve body inside the transmission which will control the flow of transmission fluid within the transmission to place the transmission in the most optimal forward gear selection.

Product Features:
  • Application matched component ensures the transmission gear position system can be returned to like new condition.
  • Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
  • This part will look and function just like the original unit being replaced.
See More

ATP – AT MODULATOR VALVE (Part No.FX-80)

AT MODULATOR VALVE

from

$43.99
AT MODULATOR VALVE

Top Picks for 1966 Mercury S-55 Automatic Transmission Friction Discs

Invest in one of our 2 durable Automatic Transmission Friction Discs for your 1966 Mercury, knowing you’re getting trusted brands and expert craftsmanship.

ATP – AT CLUTCH PLATE (Part No.FC-4)

AT CLUTCH PLATE

from

$13.99
AT CLUTCH PLATE

ATP – AT CLUTCH PLATE (Part No.FC-105)

AT CLUTCH PLATE

from

$7.99
AT CLUTCH PLATE

Top-Rated Automatic Transmission Shift Linkage Bushings for 1966 Mercury S-55s

Make a smart move for your 1966 Mercury S-55 with products all priced from $7.99 to $8.99.

ATP – AT SHF LINK BUSHING (Part No.FO-405)

AT SHF LINK BUSHING

from

$7.99
AT SHF LINK BUSHING

ATP – AT SHF LINK BUSHING (Part No.FO-300)

AT SHF LINK BUSHING

from

$8.99
AT SHF LINK BUSHING

FAQs for 1966 Mercury S-55 Automatic Transmission Parts

What are the best-selling Automatic Transmission Parts for 1966 Mercury S-55s?

Out of 10 Automatic Transmission Parts that fit 1966 Mercury S-55s, the following parts are the top sellers:

What’s the price range for 1966 Mercury S-55 Automatic Transmission Parts?

The prices of Automatic Transmission Parts for the 1966 Mercury S-55 range from $3.99 up to $48.99 for the most premium parts.

What is the average price of an Automatic Transmission Part for a 1966 Mercury S-55?

The average price for Automatic Transmission Parts for the 1966 Mercury S-55 is $27.78. Keep in mind the variety of part types within our Automatic Transmission Part category, where you are likely to find a wide range of prices across a variety of parts and components.

What are the cheapest Automatic Transmission Parts for my 1966 Mercury S-55?

The cheapest 1966 Mercury S-55 Automatic Transmission Parts we carry are:

Does Advance Auto Parts sell Automatic Transmission Parts for any other 1966 Mercury models?

What are the top-rated Automatic Transmission Parts that fit the 1966 Mercury S-55?

Based on 3 reviews by customers, our 1966 Mercury S-55 Automatic Transmission Parts have an average customer rating of 5 stars. These are the highest-rated categories of Automatic Transmission Parts for the 1966 Mercury S-55 and their top-rated products:

What types of Automatic Transmission Parts do you sell for my 1966 Mercury S-55?

As of 11/2/25, these are some of the most in-demand types of Automatic Transmission Parts for a 1966 Mercury S-55:

Can I get help with 1966 Mercury S-55 Automatic Transmission Part orders?

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

What is your return policy for Mercury S-55 Automatic Transmission Parts?

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