1956 Mercury Custom Transmission Seals

Keep Your 1956 Mercury Custom in Top Shape with Quality Transmission Seals

Whether you’re repairing or upgrading your Transmission Seal, using high-quality parts is key to keeping your 1956 Mercury Custom looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Automatic Transmission Control Shaft Seals, Extension Housing Seals, and Pinion Seals. 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.

Top-Rated Transmission Seals from Trusted Brands

Looking for a reliable Transmission Seal? We’ve got you covered with options from brands you know and trust like National and DriveWorks. For example, National Transmission Seals start at just $9.99 with an average 4.3 star rating. DriveWorks offer similar pricing and quality, backed by strong customer feedback. With over 20 reviews and a solid 5 star average, you can shop with confidence knowing other Mercury Custom owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1956 Mercury Custom Transmission Seal at Advance Auto Parts is around $9.55, with a range that starts at $3.29 and goes up to $23.49. With 10 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like AT CONTR SHAFT SEAL, Multi-Purpose Seal, and Multi-Purpose Seal start at just $3.29 and offer a great balance of form and function.

Essential 1956 Mercury Custom Transmission Seals

National – Multi-Purpose Seal (Part No.7692S)

Multi-Purpose Seal

from

$9.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: spring loaded; multi-lip
  • Temperature range: -20 Deg. F to 300 Deg. F / -29 Deg. C to 49 Deg. C
  • Resistance to EP lubricants
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
See More

ATP – AT EXT HOUSING SEAL (Part No.HO-9)

AT EXT HOUSING SEAL

from

$12.29
AT EXT HOUSING SEAL

National – Multi-Purpose Seal (Part No.7929S)

Multi-Purpose Seal

from

$6.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: spring loaded; single-lip
  • Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
  • Good low temperature capability
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
See More

National – Multi-Purpose Seal (Part No.470059)

Multi-Purpose Seal

from

$9.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: spring loaded; multi-lip
  • Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
  • Good low temperature capability
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
See More

ATP – AT CONTR SHAFT SEAL (Part No.FO-15)

AT CONTR SHAFT SEAL

from

$6.99
AT CONTR SHAFT SEAL

Driveworks – Oil Seal (Part No.S-7692S)

Oil Seal

from

$4.99
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
See More

National – Multi-Purpose Seal (Part No.6835S)

Multi-Purpose Seal

from

$10.49
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: spring loaded; single-lip
  • Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
  • Good low temperature capability
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
See More

National – Multi-Purpose Seal (Part No.340797)

Multi-Purpose Seal

from

$8.79
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: springless; single-lip
  • Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
  • Good low temperature capability
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
See More

Driveworks – Oil Seal (Part No.S-5778)

Oil Seal

from

$10.49
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
See More

National – Differential Pinion Seal (Part No.5778)

Differential Pinion Seal

from

$23.49
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: spring loaded; multi-lip
  • Temperature range: -20 Deg. F to 300 Deg. F / -29 Deg. C to 49 Deg. C
  • Resistance to EP lubricants
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
See More

National – Multi-Purpose Seal (Part No.240698)

Multi-Purpose Seal

from

$3.29
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: springless; single-lip
  • Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
  • Good low temperature capability
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
See More

Most Popular Automatic Transmission Control Shaft Seal for 1956 Mercury Customs

Enhance your 1956 Mercury Custom with this popular Automatic Transmission Control Shaft Seal we have in stock, for $6.99.

ATP – AT CONTR SHAFT SEAL (Part No.FO-15)

AT CONTR SHAFT SEAL

from

$6.99
AT CONTR SHAFT SEAL

Best-Selling 1956 Mercury Custom Extension Housing Seal

Upgrade your Custom with our best-selling Extension Housing Seal with a 4.5 Starts rating across 3 reviews.

National – Multi-Purpose Seal (Part No.7692S)

Multi-Purpose Seal

from

$9.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: spring loaded; multi-lip
  • Temperature range: -20 Deg. F to 300 Deg. F / -29 Deg. C to 49 Deg. C
  • Resistance to EP lubricants
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
See More

Top-Quality Pinion Seals for 1956 Mercury Customs

Choose a high-quality OEM or aftermarket Pinion Seal for Mercury Customs and enjoy top-notch performance from $10.49.

National – Differential Pinion Seal (Part No.5778)

Differential Pinion Seal

from

$23.49
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: spring loaded; multi-lip
  • Temperature range: -20 Deg. F to 300 Deg. F / -29 Deg. C to 49 Deg. C
  • Resistance to EP lubricants
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
See More

Driveworks – Oil Seal (Part No.S-5778)

Oil Seal

from

$10.49
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
See More

Our Top Pick for a 1956 Mercury Custom Manual Transmission Output Shaft Seal

Invest in a durable Manual Transmission Output Shaft Seal for your 1956 Mercury, knowing you’re getting trusted brands and expert craftsmanship.

Driveworks – Oil Seal (Part No.S-7692S)

Oil Seal

from

$4.99
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
See More

Our Top-Rated Transmission Seals and O-rings for 1956 Mercury Customs

Make a smart move for your 1956 Mercury Custom with our Transmission Seals and O-ring for $9.99.

National – Multi-Purpose Seal (Part No.470059)

Multi-Purpose Seal

from

$9.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Design type: spring loaded; multi-lip
  • Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
  • Good low temperature capability
  • Low swell in hydrocarbon fluids
  • Delivers quality and reliable performance for every type of repair
See More

Top-Rated Transmission Seal Brands For Your 1956 Mercury Custom

When it comes to finding the perfect Transmission Seal for your 1956 Mercury Custom, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 3 trusted brands. We carry the most popular Transmission Seal brands including National and DriveWorks, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $4.99. Purchasing a Transmission Seal from us here at Advance Auto Parts is a smart move for both you and your 1956 Mercury Custom, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 1956 Mercury Custom Transmission Seals

If you’re looking for a top-quality Transmission Seal for your 1956 Mercury Custom, Advance Auto Parts has exactly what you need with our selection of National Transmission Seals. We have 3 National Transmission Seals in stock for this fitment, all known for their durability and precision fit. With prices starting at just $9.99 and an average cost of $14.49, you’ll find the perfect Transmission Seal for your needs and budget. National Transmission Seals for the 1956 Mercury Custom come highly rated, with over 8 customer reviews and an impressive average rating of 4.3 stars. Choosing a National Transmission Seal from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Multi-Purpose Seal
from $9.99
(3)
Multi-Purpose Seal
“Perfect part at a fair price”
Multi-Purpose Seal
from $9.99
(1)
Multi-Purpose Seal
“These seals replaced the original “LEATHER” seals. The double lip design (Oil in – Dirt out) is a better seal!”
Differential Pinion Seal
from $23.49
(4)
Differential Pinion Seal
“Works well fit right in. Love national seals”

Top-Quality DriveWorks 1956 Mercury Custom Transmission Seals

For those in search of a high-quality Transmission Seal for their 1956 Mercury Custom, Advance Auto Parts offers a great selection of DriveWorks Transmission Seals. With 2 DriveWorks Transmission Seals in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Transmission Seals start at just $4.99, with an average price of $7.74, giving you a range of options to suit your budget. Backed by over 12 customer ratings and an average rating of 4.3 stars, DriveWorks Transmission Seals provide both reliability and excellent performance. Choosing a DriveWorks Transmission Seal from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Oil Seal
from $4.99
(9)
Oil Seal
“Good price works fine”
Oil Seal
from $10.49
(3)
Oil Seal
“Fit the rear Dana 44 on my TJ just fine and stopped the leaking.”

FAQs for 1956 Mercury Custom Transmission Seals

What are the best-selling Transmission Seals for 1956 Mercury Customs?

Out of 10 Transmission Seals that fit 1956 Mercury Customs, the following parts are the top sellers:

What’s the price range for 1956 Mercury Custom Transmission Seals?

The prices of Transmission Seals for the 1956 Mercury Custom range from $3.29 up to $23.49 for the most premium parts.

What is the average price of a Transmission Seal for a 1956 Mercury Custom?

The average price for Transmission Seals for the 1956 Mercury Custom is $9.55. Keep in mind the variety of part types within our Transmission Seal category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Transmission Seals for other Mercury Custom model years?

Yes, we carry Transmission Seals for 3 model years of Mercury Customs between 1952 and 1955. The following model years are the most popular for Transmission Seal purchases: 1955, 1954, 1953, and 1952.

What are the cheapest Transmission Seals for my 1956 Mercury Custom?

The cheapest 1956 Mercury Custom Transmission Seals we carry are:

Does Advance Auto Parts sell Transmission Seals for any other 1956 Mercury models?

Yes. We stock Transmission Seals for 2 other popular 1956 Mercury models. Some of the most popular are 1956 Monterey Transmission Seals, 1956 Montclair Transmission Seals, and 1956 Medalist Transmission Seals.

What are the top-rated Transmission Seals that fit the 1956 Mercury Custom?

Based on 20 reviews by customers, our 1956 Mercury Custom Transmission Seals have an average customer rating of 5 stars. These are the highest-rated categories of Transmission Seals for the 1956 Mercury Custom and their top-rated products:

What types of Transmission Seals do you sell for my 1956 Mercury Custom?

As of 11/2/25, these are some of the most in-demand types of Transmission Seals for a 1956 Mercury Custom:

Can I get help with 1956 Mercury Custom Transmission Seal orders?

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

What is your return policy for Mercury Custom Transmission Seals?

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