1966 Mercury S-55 Flywheels
Keep Your 1966 Mercury S-55 in Top Shape with Quality Flywheels
Whether you’re repairing or upgrading your Flywheel, 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 Flywheels and Flexplates, Flywheel Shims, and Flywheel Ring Gears. 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 Flywheel at Advance Auto Parts is around $96.63, with a range that starts at $25.99 and goes up to $199.99. With 5 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like ATP Automatic Transmission Flex Plate, Sfi Flexplate:Ford 57-Up 332-428: 429-46, and FLYWHEEL SHIM start at just $26.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Flywheel, don’t forget to check out other key components like Clutch Kits and Clutch Release Bearings. At Advance Auto Parts, we’re here to help you keep your 1966 Mercury S-55 in peak condition, inside and out.
Find Your Specific 1966 Mercury S-55 Flywheels
Looking for the perfect Flywheel for your 1966 Mercury S-55? You’re in the right place. Below, you’ll find links to various types of Flywheels that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Flywheels, ensuring durability and a precise fit for your Mercury S-55. Whether you’re driving a 1966 model or another popular model year like
1967, we’ve got you covered. Purchasing Flywheels from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Flywheels that fit your vehicle.
Essential 1966 Mercury S-55 Flywheels
ATP – ATP Manual Transmission Flywheel Ring Gear (Part No.ZA-502)
from
$37.99
The ring gear has teeth which engage with the starter motor allowing the engine to crank over And start. Repeated engagement with the starter results in worn or broken ring gear teeth. Once this is diagnosed, the ring gear must be replaced. ATP ring gears are designed to fit And function just like the original part to ensure durability And long life.
Product Features:
See More
Product Features:
- Manufactured to meet or exceed original equipment specs
- Eliminates grinding from damaged teeth
- Increases starter drive life
ATP – FLYWHEEL SHIM (Part No.FS-4)
from
$26.99
FLYWHEEL SHIM
ATP – FLYWHEEL SHIM (Part No.FS-5)
from
$25.99
FLYWHEEL SHIM
Hays – Sfi Flexplate:Ford 57-Up 332-428: 429-46 (Part No.12-049)
from
$199.99
Sfi Flexplate:Ford 57-Up 332-428: 429-46
ATP – Automatic Transmission Flex Plate (Part No.Z-158)
from
$81.99
Vehicles with automatic transmissions have a flex plate. The flex plates connects the engine and transmission. Most flex plates are made of a thick piece of sheet metal with bolt holes for the torque converter and teeth for the starter. The job of a flex plate is to allow for expansion of the torque converter as engine RPM increases. The constant expansion and contraction of a flex plate over time can result cracks and/or shearing of the flex plate. A damaged flex plate can create serious (expensive) damage. Broken flex plates can not be repaired, they must be replaced. ATP flex plates are made of high quality steel and contain the correct bolt hole spacing and ring gear teeth just like the original part to ensure long life and durability
Product Features:
See More
Product Features:
- Balanced to factory specs
- Fit and function like the original parts
- Restores normal operation
ATP – ATP Automatic Transmission Flex Plate (Part No.Z-242)
from
$128.99
Vehicles with automatic transmissions have a flex plate. Flex plates connect the engine And transmission. Most flex plates are made of a thick piece of sheet metal with bolt holes for the torque converter And teeth for the starter. The job of a flex plate is to allow for expansion of the torque converter as engine RPM increases. The constant expansion And contraction of a flex plate over time can result cracks And/or shearing of the flex plate. A damaged flex plate can create serious (expensive) damage. Broken flex plates can not be repaired, they must be replaced. ATP flex plates are made of high quality steel And contain the correct bolt hole spacing And ring gear teeth just like the original part to ensure long life And durability
Product Features:
See More
Product Features:
- Balanced to factory specs
- Fit and function like the original parts
- Restores normal operation
Popular 1966 Mercury S-55 Flywheels Categories
Most Popular Flywheels and Flexplates for 1966 Mercury S-55s
Enhance your 1966 Mercury S-55 with one of the 2 Flywheels and Flexplates we have in stock, starting at just $128.99.
Hays – Sfi Flexplate:Ford 57-Up 332-428: 429-46 (Part No.12-049)
from
$199.99
Sfi Flexplate:Ford 57-Up 332-428: 429-46
ATP – ATP Automatic Transmission Flex Plate (Part No.Z-242)
from
$128.99
Vehicles with automatic transmissions have a flex plate. Flex plates connect the engine And transmission. Most flex plates are made of a thick piece of sheet metal with bolt holes for the torque converter And teeth for the starter. The job of a flex plate is to allow for expansion of the torque converter as engine RPM increases. The constant expansion And contraction of a flex plate over time can result cracks And/or shearing of the flex plate. A damaged flex plate can create serious (expensive) damage. Broken flex plates can not be repaired, they must be replaced. ATP flex plates are made of high quality steel And contain the correct bolt hole spacing And ring gear teeth just like the original part to ensure long life And durability
Product Features:
See More
Product Features:
- Balanced to factory specs
- Fit and function like the original parts
- Restores normal operation
Best-Selling 1966 Mercury S-55 Flywheel Shims
Upgrade your S-55 with one of our 2 best-selling Flywheel Shims.
ATP – FLYWHEEL SHIM (Part No.FS-4)
from
$26.99
FLYWHEEL SHIM
ATP – FLYWHEEL SHIM (Part No.FS-5)
from
$25.99
FLYWHEEL SHIM
Top-Quality Flywheel Ring Gears for 1966 Mercury S-55s
Choose a high-quality OEM or aftermarket Flywheel Ring Gear for Mercury S-55s and enjoy top-notch performance from $37.99.
ATP – ATP Manual Transmission Flywheel Ring Gear (Part No.ZA-502)
from
$37.99
The ring gear has teeth which engage with the starter motor allowing the engine to crank over And start. Repeated engagement with the starter results in worn or broken ring gear teeth. Once this is diagnosed, the ring gear must be replaced. ATP ring gears are designed to fit And function just like the original part to ensure durability And long life.
Product Features:
See More
Product Features:
- Manufactured to meet or exceed original equipment specs
- Eliminates grinding from damaged teeth
- Increases starter drive life
FAQs for 1966 Mercury S-55 Flywheels
What are the best-selling Flywheels for 1966 Mercury S-55s?
Out of 5 Flywheels that fit 1966 Mercury S-55s, the following parts are the top sellers:
- ATP Automatic Transmission Flex Plate (3922804) – $128.99
- Sfi Flexplate:Ford 57-Up 332-428: 429-46 (12247387) – $199.99
- FLYWHEEL SHIM (10860859) – $26.99
What’s the price range for 1966 Mercury S-55 Flywheels?
The prices of Flywheels for the 1966 Mercury S-55 range from $25.99 up to $199.99 for the most premium parts.
What is the average price of a Flywheel for a 1966 Mercury S-55?
The average price for Flywheels for the 1966 Mercury S-55 is $96.63. Keep in mind the variety of part types within our Flywheel category, where you are likely to find a wide range of prices across a variety of parts and components.
What are the cheapest Flywheels for my 1966 Mercury S-55?
The cheapest 1966 Mercury S-55 Flywheels we carry are:
- FLYWHEEL SHIM (10860854) – $25.99
- FLYWHEEL SHIM (10860859) – $26.99
- ATP Manual Transmission Flywheel Ring Gear (3923479) – $37.99
- ATP Automatic Transmission Flex Plate (3922804) – $128.99
- Sfi Flexplate:Ford 57-Up 332-428: 429-46 (12247387) – $199.99
Does Advance Auto Parts sell Flywheels for any other 1966 Mercury models?
Yes. We stock Flywheels for 11 other popular 1966 Mercury models. Some of the most popular are 1966 Monterey Flywheels, 1966 Marauder Flywheels, 1966 Colony Park Flywheels, 1966 Villager Flywheels, and 1966 Capri Flywheels.
What are the top-rated Flywheels that fit the 1966 Mercury S-55?
The one 1966 Mercury S-55 Flywheel we have in stock is the FLYWHEEL SHIM. It costs $25.99.
What types of Flywheels do you sell for my 1966 Mercury S-55?
As of 11/2/25, these are some of the most in-demand types of Flywheels for a 1966 Mercury S-55:
Can I get help with 1966 Mercury S-55 Flywheel orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mercury Flywheels and more.
What is your return policy for Mercury S-55 Flywheels?
Advance Auto Parts keeps returns simple. For new Mercury S-55 Flywheels and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.