1978 Chevrolet C20 Transmission Seals

Keep Your 1978 Chevrolet C20 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 1978 Chevrolet C20 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Extension Housing Seals, Automatic Transmission Dipstick 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. For example, National Transmission Seals start at just $11.99 with an average 4.3 star rating. With over 572 reviews and a solid 5 star average, you can shop with confidence knowing other Chevrolet C20 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1978 Chevrolet C20 Transmission Seal at Advance Auto Parts is around $22.16, with a range that starts at $2.99 and goes up to $123.99. With 24 options in stock from 6 trusted brands, finding the right fit is easy. Popular picks like Multi-Purpose Seal, Multi-Purpose Seal, and AT EXT HOUSING SEAL start at just $11.99 and offer a great balance of form and function.

Find Your Specific 1978 Chevrolet C20 Transmission Seals

Looking for the perfect Transmission Seal for your 1978 Chevrolet C20? You’re in the right place. Below, you’ll find links to various types of Transmission Seals that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Transmission Seals, ensuring durability and a precise fit for your Chevrolet C20. Whether you’re driving a 1978 model or another popular model year like 1977, 1979, 1980, 1981, 1982, 1983, 1984, 1985, and 1986, we’ve got you covered. Purchasing Transmission Seals 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 Transmission Seals that fit your vehicle.

Essential 1978 Chevrolet C20 Transmission Seals

ATP – AT DETENT CABLE SEAL (Part No.SO-37)

AT DETENT CABLE SEAL

from

$3.99
AT DETENT CABLE SEAL
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Motive Gear – Pinion Seal (Part No.3896)

Pinion Seal

from

$15.99
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.
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ATP – AT SEL SHAFT SEAL (Part No.SO-19)

AT SEL SHAFT SEAL

from

$8.99
AT SEL SHAFT SEAL

(2 reviews)
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National – Engine Crankshaft Seal (Part No.5092)

Engine Crankshaft Seal

from

$49.99
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: split-lip; 2-piece
  • Temperature range: -80 Deg. F to 350 Deg. F / -62 Deg. C to 176 Deg. C
  • Good dry heat resistance
  • Excellent low temperature capability
  • Delivers quality and reliable performance for every type of repair
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ATP – AT DPSTK TUBE SEAL (Part No.SO-35)

AT DPSTK TUBE SEAL

from

$5.99
AT DPSTK TUBE SEAL

(7 reviews)
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National – Multi-Purpose Seal (Part No.9613S)

Multi-Purpose Seal

from

$7.99
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
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(8 reviews)
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National – Multi-Purpose Seal (Part No.4583)

Multi-Purpose Seal

from

$12.99
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
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(13 reviews)
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ATP – Automatic Transmission Speedometer Pinion Seal (Part No.SO-13)

Automatic Transmission Speedometer Pinion Seal

from

$2.99
Product Features:
  • ATP Transmission Seals And Gaskets are exact fit, no compromise replacement parts
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ATP – AT SPEED PINION SEAL (Part No.SO-34)

AT SPEED PINION SEAL

from

$9.99
AT SPEED PINION SEAL
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National – Multi-Purpose Seal (Part No.5208)

Multi-Purpose Seal

from

$20.49
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: -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
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(3 reviews)
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FAG US – Shaft Seal (Part No.SS2571)

Shaft Seal

from

$16.79
Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.

Product Features:
  • High-precision and High-quality components used in all KITs
  • Coverage of classic and new high-tech solutions for the best system coverage
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ATP – AT EXT HOUSING SEAL (Part No.HO-8)

AT EXT HOUSING SEAL

from

$13.29
AT EXT HOUSING SEAL
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National – Multi-Purpose Seal (Part No.7038SA)

Multi-Purpose Seal

from

$16.49
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: -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
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ATP – AT EXT HOUSING SEAL (Part No.SO-22)

AT EXT HOUSING SEAL

from

$8.99
AT EXT HOUSING SEAL
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ATP – AT SEAL (Part No.SO-39)

AT SEAL

from

$5.99
AT SEAL
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National – Multi-Purpose Seal (Part No.410085)

Multi-Purpose Seal

from

$15.49
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: -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
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National – Multi Purpose Seal (Part No.8792S)

Multi Purpose Seal

from

$6.99
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
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(20 reviews)
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National – Multi-Purpose Seal (Part No.240735)

Multi-Purpose Seal

from

$5.99
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: 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
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National – Multi-Purpose Seal (Part No.5200)

Multi-Purpose Seal

from

$12.99
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
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(5 reviews)
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Popular 1978 Chevrolet C20 Transmission Seals Categories

Pinion Seals
Pinion Seals
Automatic Transmission Dipstick Seals
Automatic Transmission Dipstick Seals
Transmission Seals and O-rings
Transmission Seals and O-rings
Manual Transmission Bearing and Seal Overhaul Kits
Manual Transmission Bearing and Seal Overhaul Kits
Automatic Transmission Extension Housing Seal Kits
Automatic Transmission Extension Housing Seal Kits
Extension Housing Seals
Extension Housing Seals
Manual Transmission Output Shaft Seals
Manual Transmission Output Shaft Seals
Miscellaneous Automatic Transmission Seals
Miscellaneous Automatic Transmission Seals
Automatic Transmission Selector Shaft Seals
Automatic Transmission Selector Shaft Seals
Automatic Transmission Detent Cable Seals
Automatic Transmission Detent Cable Seals
Shift Shaft Seals
Shift Shaft Seals
Manual Transmission Seals
Manual Transmission Seals
Automatic Transmission Speedometer Pinion Seals
Automatic Transmission Speedometer Pinion Seals
Automatic Transmission Seals
Automatic Transmission Seals
Manual Transmission Output Shaft Seal Kits
Manual Transmission Output Shaft Seal Kits

Most Popular Extension Housing Seals for 1978 Chevrolet C20s

Enhance your 1978 Chevrolet C20 with one of the 3 Extension Housing Seals we have in stock, starting at just $8.99.
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ATP – AT EXT HOUSING SEAL (Part No.HO-9)

AT EXT HOUSING SEAL

from

$12.29
AT EXT HOUSING SEAL
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ATP – AT EXT HOUSING SEAL (Part No.SO-22)

AT EXT HOUSING SEAL

from

$8.99
AT EXT HOUSING SEAL
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ATP – AT EXT HOUSING SEAL (Part No.JO-57)

AT EXT HOUSING SEAL

from

$8.99
AT EXT HOUSING SEAL
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Best-Selling 1978 Chevrolet C20 Automatic Transmission Dipstick Seal

Upgrade your C20 with our best-selling Automatic Transmission Dipstick Seal with a 4.5 Starts rating across 7 reviews.
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ATP – AT DPSTK TUBE SEAL (Part No.SO-35)

AT DPSTK TUBE SEAL

from

$5.99
AT DPSTK TUBE SEAL

(7 reviews)
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Top-Quality Pinion Seals for 1978 Chevrolet C20s

Choose a high-quality OEM or aftermarket Pinion Seal for Chevrolet C20s and enjoy top-notch performance from $14.49.
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National – Multi Purpose Seal (Part No.2286)

Multi Purpose Seal

from

$24.49
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
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(1 reviews)
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Motive Gear – Differential Pinion Seal (Part No.2286)

Differential Pinion Seal

from

$22.29
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.
See More
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Driveworks – Oil Seal (Part No.S-2286)

Oil Seal

from

$14.49
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Top Picks for 1978 Chevrolet C20 Manual Transmission Output Shaft Seals

Invest in one of our 2 durable Manual Transmission Output Shaft Seals for your 1978 Chevrolet, knowing you’re getting trusted brands and expert craftsmanship.
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National – Multi-Purpose Seal (Part No.9449)

Multi-Purpose Seal

from

$11.99
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

(2 reviews)
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National – Multi-Purpose Seal (Part No.9613S)

Multi-Purpose Seal

from

$7.99
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

(8 reviews)
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Top-Rated Transmission Seals and O-rings for 1978 Chevrolet C20s

Make a smart move for your 1978 Chevrolet C20 with products all priced from $5.99 to $15.49.
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National – Multi Purpose Seal (Part No.8792S)

Multi Purpose Seal

from

$6.99
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

(20 reviews)
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National – Multi-Purpose Seal (Part No.240735)

Multi-Purpose Seal

from

$5.99
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: 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
View Product

National – Multi-Purpose Seal (Part No.410085)

Multi-Purpose Seal

from

$15.49
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: -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
View Product

Top-Rated Transmission Seal Brands For Your 1978 Chevrolet C20

When it comes to finding the perfect Transmission Seal for your 1978 Chevrolet C20, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 6 trusted brands. We carry the most popular Transmission Seal brands including National, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $11.99. Purchasing a Transmission Seal from us here at Advance Auto Parts is a smart move for both you and your 1978 Chevrolet C20, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 1978 Chevrolet C20 Transmission Seals

If you’re looking for a top-quality Transmission Seal for your 1978 Chevrolet C20, 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 $11.99 and an average cost of $16.49, you’ll find the perfect Transmission Seal for your needs and budget. National Transmission Seals for the 1978 Chevrolet C20 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 $12.99
(5)
Multi-Purpose Seal
“It seals great so far”
Multi Purpose Seal
from $24.49
(1)
Multi Purpose Seal
“Fits right the first time… No more leaks…”
Multi-Purpose Seal
from $11.99
(2)
Multi-Purpose Seal
“Sealed tbe trams leak perfectly”

FAQs for 1978 Chevrolet C20 Transmission Seals

What are the best-selling Transmission Seals for 1978 Chevrolet C20s?

Out of 24 Transmission Seals that fit 1978 Chevrolet C20s, the following parts are the top sellers:

What’s the price range for 1978 Chevrolet C20 Transmission Seals?

The prices of Transmission Seals for the 1978 Chevrolet C20 range from $2.99 up to $123.99 for the most premium parts.

What is the average price of a Transmission Seal for a 1978 Chevrolet C20?

The average price for Transmission Seals for the 1978 Chevrolet C20 is $22.16. 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 Chevrolet C20 model years?

Yes, we carry Transmission Seals for 10 model years of Chevrolet C20s between 1975 and 1986. The following model years are the most popular for Transmission Seal purchases: 1986, 1985, 1984, 1983, 1982, 1981, 1980, 1979, and 1977.

What are the cheapest Transmission Seals for my 1978 Chevrolet C20?

The cheapest 1978 Chevrolet C20 Transmission Seals we carry are:

Does Advance Auto Parts sell Transmission Seals for any other 1978 Chevrolet models?

Yes. We stock Transmission Seals for 22 other popular 1978 Chevrolet models. Some of the most popular are 1978 Impala Transmission Seals, 1978 Malibu Transmission Seals, 1978 Camaro Transmission Seals, 1978 Monte Carlo Transmission Seals, and 1978 Corvette Transmission Seals.

What are the top-rated Transmission Seals that fit the 1978 Chevrolet C20?

Based on 572 reviews by customers, our 1978 Chevrolet C20 Transmission Seals have an average customer rating of 5 stars. These are the highest-rated categories of Transmission Seals for the 1978 Chevrolet C20 and their top-rated products:

What types of Transmission Seals do you sell for my 1978 Chevrolet C20?

As of 11/2/25, these are some of the most in-demand types of Transmission Seals for a 1978 Chevrolet C20:

Can I get help with 1978 Chevrolet C20 Transmission Seal orders?

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

What is your return policy for Chevrolet C20 Transmission Seals?

Advance Auto Parts keeps returns simple. For new Chevrolet C20 Transmission Seals and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

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