1966 Mercury Comet Differential Spools
Enhance and Protect Your 1966 Mercury Comet with Quality Differential Spools
Maintaining the performance of your 1966 Mercury Comet starts with choosing the right parts, and a high-quality Differential Spool helps ensure a reliable and efficient vehicle. At Advance Auto Parts, we offer Differential Spools specifically for the 1966 Mercury Comet, ensuring a perfect fit and lasting durability. Choosing to shop with Advance Auto Parts means you’re making a smart decision to prioritize both quality and reliability for your vehicle.
Affordable and Reliable Differential Spools for Every Budget
Finding a Differential Spool that combines quality with affordability is easy at Advance Auto Parts. With prices starting as low as $51.99 and an average price of $237.05, you can choose one that fits your budget while delivering the quality you expect. Our Differential Spools are competitively priced, ranging from $51.99 to $579.99, so you get value without compromising on strength or reliability.
Trusted Brands and Top-Rated Options
With 17 Differential Spools from 4 trusted brands in stock, Advance Auto Parts has you covered. Popular options include Differential Spool, Mini Spool For Ford 9" With 31 Spline Axles, and Mini Spool For Ford 9" With 28 Spline Axles, starting at $57.99. Our selection includes highly regarded brands such as USA Standard Gear, Motive Gear, and Richmond Gear, and more, offering you top-notch reliability. For example, we have 5 USA Standard Gear Differential Spools starting at $57.99 with an average rating of 2 stars, 3 Motive Gear options from $149.99 with a 4 stars rating, and 2 Richmond Gear Differential Spools priced from $259.99 with a 4 stars average rating.
Explore Related Parts for a Complete Solution
To further enhance your 1966 Mercury Comet, don’t miss our related parts categories, including Differential Oil and Rear Differential Cover Gaskets. These additions will round out your repair or upgrade project and ensure your vehicle is ready for any adventure.
Differential Spools for Your 1966 Mercury Comet
Motive Gear – Differential Spool (Part No.FS9-31LW)
USA Standard Gear – Mini Spool For Ford 9" With 28 Spline Axles (Part No.59022)
from
$59.99
Product Features:
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- Fits Ford 9″ with 28 spline axles
- Installs into a standard open carrier case
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
USA Standard Gear – Mini Spool For Ford 9" With 31 Spline Axles (Part No.59023)
from
$57.99
Product Features:
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- Fits Ford 9″ with 31 spline axles
- Installs into a standard open carrier case
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
USA Standard Gear – Spartan Locker For Ford 9", 28 Or 31 Spline (Part No.17042)
from
$579.99
The Spartan Locker, by USA Standard Gear, provides reliable traction at a low cost. Give your vehicle great traction and save some cash. Choose a Spartan Locker for better traction. The Spartan locker by USA standard gear is a mechanical locker that replaces the spiders in a standard case. The Spartan locker’s design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap! The couplers are made from 9310 steel, for added strength. Each Spartan locker carries a one year warranty against defect. This unit uses the factory side gears.
Product Features:
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Product Features:
- Fits Ford 8″ and 9″ with 28 or 31 spline axles
- Made from 9310 steel for added strength
- Works with stock side gears in standard carrier case
Yukon Gear – Steel Spool For Ford 9" With 35 Spline Axles, Small Bearing (Part No.32098)
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$404.99
Yukon Performance steel spool for 9″ Ford with 35 spline axles. Spool uses 1.785″ journal bearings. fits 2.8″ and 3.0″ cases. Yukon performance spools are made from the highest quality materials to ensure high strength and long life in performance applications. Spools provide 100% power to both tires at all times and are a lower cost alternative to lockers. Spools are not recommended for street driven vehicles. Yukon Performance spools come with a one year warranty against manufacturing defects.
Product Features:
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Product Features:
- Fits Ford 9″ with 35 spline axles
- Small bearing journal to fit 2.968″ and 3.062″ dropouts
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
Yukon Gear – Steel Spool For Ford 9" With 40 Spline Axles (Part No.32182)
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$389.99
Yukon Performance 2-3/16″ deck steel spool for 9″ Ford with 40 spline axles. Spool uses 2″ journal bearings (45 degree). Yukon performance spools are made from the highest quality materials to ensure high strength and long life in performance applications. Spools provide 100% power to both tires at all times and are a lower cost alternative to lockers. Spools are not recommended for street driven vehicles. Yukon Performance spools come with a one year warranty against manufacturing defects.
Product Features:
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Product Features:
- Fits Ford 9″ with 40 spline axles
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
Yukon Gear – Steel Spool For Ford 9" With 35 Spline Axles (Part No.32047)
from
$379.99
Yukon Performance 2-3/16″ deck steel spool for 9″ Ford with 35 spline axles. Spool uses 2″ journal bearings (30 degree). Does not fit Mark Williams. Yukon performance spools are made from the highest quality materials to ensure high strength and long life in performance applications. Spools provide 100% power to both tires at all times and are a lower cost alternative to lockers. Spools are not recommended for street driven vehicles. Yukon Performance spools come with a one year warranty against manufacturing defects.
Product Features:
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Product Features:
- Fits Ford 9″ with 35 spline axles
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
Yukon Gear – Lightweight Steel Spool For Ford 9" With 31 Spline Axles (Part No.32046)
from
$313.99
Yukon Performance 2-1/8″ deck lightweight steel spool for 9″ Ford with 31 spline axles. Spool uses 1.785″ journal bearings. Yukon performance spools are made from the highest quality materials to ensure high strength and long life in performance applications. Spools provide 100% power to both tires at all times and are a lower cost alternative to lockers. Spools are not recommended for street driven vehicles. Yukon Performance spools come with a one year warranty against manufacturing defects.
Product Features:
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Product Features:
- Fits Ford 9″ with 31 spline axles
- Lightweight design
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
USA Standard Gear – Spool For Ford 9", 35 Spline (Part No.59025)
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$294.99
9″ FORD 35Spline SPOOL 30deg (EXCL M.WLMS) 2-3/16″ DECK , 2″ Journal .
Product Features:
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Product Features:
- Fits Ford 9″ with 35 spline axles
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
Yukon Gear – Steel Spool For Ford 9" With 31 Spline Axles (Part No.32045)
from
$289.99
Yukon Performance 2-1/8″ deck steel spool for 9″ Ford with 31 spline axles. Spool uses 1.785″ journal bearings. Yukon performance spools are made from the highest quality materials to ensure high strength and long life in performance applications. Spools provide 100% power to both tires at all times and are a lower cost alternative to lockers. Spools are not recommended for street driven vehicles. Yukon Performance spools come with a one year warranty against manufacturing defects.
Product Features:
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Product Features:
- Fits Ford 9″ with 31 spline axles
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
Richmond Gear – Differential Spool (Part No.81-0928-1)
from
$259.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!
Product Features:
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Product Features:
- For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
- The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
- Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
- Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
- Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
Richmond Gear – Differential Spool (Part No.81-0935-3)
from
$259.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!
Product Features:
See More
Product Features:
- For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
- The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
- Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
- Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
- Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.
USA Standard Gear – Spool For Ford 9", 31 Spline (Part No.59004)
from
$175.99
Product Features:
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- Fits Ford 9″ with 31 spline axles
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
Motive Gear – Differential Spool (Part No.FS9-28LW)
Motive Gear – Differential Spool (Part No.FS9-35LW)
Yukon Gear – Mini Spool For Ford 9" With 28 Spline Axles (Part No.32056)
from
$59.99
Mini Spool 8″ and 9″ for Ford with 28 spline axles. Cross is bored for three cross pins. Mini spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier and give 100% power to both tires at all times. These units are not recommended for street-driven vehicles. We recommend full spools for vehicles with large tires or high horsepower. These units come with a one year warranty against manufacturing defects.
Product Features:
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Product Features:
- Fits Ford 9″ with 28 spline axles
- Installs into a standard open carrier case
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
Yukon Gear – Mini Spool For Ford 9" With 31 Spline Axles (Part No.32057)
from
$51.99
Mini Spool for Ford 9.0 with 31 spline axles. Cross is bored for three cross pins. Mini spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier and give 100% power to both tires at all times. These units are not recommended for street-driven vehicles. We recommend full spools for vehicles with large tires or high horsepower. These units come with a one year warranty against manufacturing defects.
Product Features:
See More
Product Features:
- Fits Ford 9″ with 31 spline axles
- Installs into a standard open carrier case
- Provides 100% traction to both wheels at all times
- Not recommended for street driven vehicles
FAQs for 1966 Mercury Comet Differential Spools
Which Differential Spools are the top sellers for the 1966 Mercury Comet?
Out of 17 Differential Spools that fit 1966 Mercury Comets, the following parts are the top sellers:
from
$57.99
This product is not rated
Mini Spool For Ford 9" With 31 Spline Axles
Differential Spools
from
$59.99
This product is not rated
Mini Spool For Ford 9" With 28 Spline Axles
Differential Spools
How can I make sure that a part will be compatible with my 1966 Mercury Comet?
Our Mercury Comet aftermarket and OEM parts are designed specifically for the 1966 model. You can always find your specific fitment and compatibility for your 1966 Mercury on an individual product page.
What is the price range for 1966 Mercury Comet Differential Spools?
The range of prices of Differential Spools for the 1966 Mercury Comet goes from $51.99 up to $579.99 for the most premium parts.
What is the average price of a 1966 Mercury Comet Differential Spool?
1966 Mercury Comet Differential Spools average $237.05 for our selection of OEM and aftermarket parts. Keep in mind the variety of brands we offer, such as USA Standard Gear, Motive Gear, Richmond Gear, and more, so you are likely to find a wide range of prices across a variety of brands and products.
Does Advance Auto Parts sell Differential Spools for other Mercury Comet model years?
Can I get help with 1966 Mercury Comet Differential Spool orders?
Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Mercury Differential Spools and more.
What is your return policy for Mercury Comet Differential Spools?
Advance Auto Parts keeps returns simple. For new Mercury Comet Differential Spools and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
Differential Spools For Other Mercury Comet Model Years
Looking for parts for a different model year of the Mercury Comet? Below, you’ll find links to Differential Spools for a range of model years, from 1963 models all the way up to 1977. At Advance Auto Parts, we carry high-quality OEM and aftermarket auto parts for popular years like 1968, 1969, 1971, 1972, 1973, 1974, 1975, 1976, 1977, and more, ensuring you have access to the best options for your specific needs. Choosing a Differential Spool from Advance Auto Parts means investing in top-tier parts that will keep your Mercury Comet running at its best, no matter the year.
