1981 Chevrolet K20 Transfer Cases

Keep Your 1981 Chevrolet K20 in Top Shape with Quality Transfer Cases

Whether you’re repairing or upgrading your Transfer Case, using high-quality parts is key to keeping your 1981 Chevrolet K20 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Transfer Case Output Shaft Seals, Input Shaft Seals, and Output Shaft Pilot Bearings. 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 Transfer Cases from Trusted Brands

Looking for a reliable Transfer Case? We’ve got you covered with options from brands you know and trust like National and DriveWorks. For example, National Transfer Cases start at just $17.99 with an average 4.3 star rating. DriveWorks offer similar pricing and quality, backed by strong customer feedback. With over 468 reviews and a solid 5 star average, you can shop with confidence knowing other Chevrolet K20 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1981 Chevrolet K20 Transfer Case at Advance Auto Parts is around $30.08, with a range that starts at $4.99 and goes up to $153.99. With 34 options in stock from 5 trusted brands, finding the right fit is easy. Popular picks like Oil Seal, Taper Bearing Cone, and Oil Seal start at just $4.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Transfer Case, don’t forget to check out other key components like 4WD Components and Universal Joints. At Advance Auto Parts, we’re here to help you keep your 1981 Chevrolet K20 in peak condition, inside and out.

Looking for the perfect Transfer Case for your 1981 Chevrolet K20? You’re in the right place. Below, you’ll find links to various types of Transfer Cases that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Transfer Cases, ensuring durability and a precise fit for your Chevrolet K20. Whether you’re driving a 1981 model or another popular model year like 1977, 1978, 1979, 1980, 1982, 1983, 1984, 1985, and 1986, we’ve got you covered. Purchasing Transfer Cases 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 Transfer Cases that fit your vehicle.

Essential 1981 Chevrolet K20 Transfer Cases

from

$16.99

With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.

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

from

$7.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

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: 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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$31.99

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:

Designed to repair damaged, grooved or worn shafts
Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
Easy to install with removable flange and installation tool
Installation tool reduces sleeve distortion and allows for installation without removal from the shaft

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$4.99

Value-priced seal meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$13.49

This transfer case oil drain plug 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 transfer case oil drain plug matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this plug is a reliable replacement for an original part that is missing or 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

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$49.49

Product Features:

BUILT TO LAST: Advanced heat treatment process for strength
PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on

from

$36.49

Designed to repair damaged, grooved or worn shafts
Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
Easy to install with removable flange and installation tool

from

$19.49

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$7.59

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

from

$26.49

Product Features:

RIGHT TYPE: Needle bearings are application-specific for the repair occasion, using either caged or full complement designs
PREMIUM MATERIALS: Precision manufactured using high-quality materials for outstanding durability and performance
OE-STYLE DESIGN: Engineered to meet OE specifications
COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on

from

$17.99

Product Features:

RIGHT TYPE: Needle bearings are application-specific for the repair occasion, using either caged or full complement designs
PREMIUM MATERIALS: Precision manufactured using high-quality materials for outstanding durability and performance
OE-STYLE DESIGN: Engineered to meet OE specifications
COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on

from

$13.99

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

from

$11.99

Design type: spring loaded; single-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

from

$4.99

Value-priced seal meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$5.49

Value-priced seal meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$11.99

TCaseShiftForkInsert

Popular 1981 Chevrolet K20 Transfer Cases Categories

Transfer Case Adapter Gaskets

Input Shaft Pilot Bearings

Transfer Case Output Shaft Seals

Input Shaft Bearings

Transfer Case Drive Chains

Transfer Case Output Shaft Bearings

Transfer Case Differential Bearings

Bearing and Seal Overhaul Kits

Input Shaft Seals

Mounting Adapter Seals

Transfer Case Oil Drain Plugs

Oil Pump Housing Seals

Transfer Case Shift Fork Inserts

Output Shaft Pilot Bearings

Most Popular Transfer Case Output Shaft Seals for 1981 Chevrolet K20s

Enhance your 1981 Chevrolet K20 with one of the 3 Transfer Case Output Shaft Seals we have in stock, starting at just $4.99.

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from

$5.49

Value-priced seal meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$4.99

Value-priced seal meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$4.99

TCaseOutputShaftSeal

Best-Selling 1981 Chevrolet K20 Input Shaft Seals

Upgrade your K20 with one of our 5 best-selling Input Shaft Seals, earning an average 4.83 stars rating across 22 reviews.

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from

$20.49

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

from

$11.99

Design type: spring loaded; single-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

from

$13.99

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

from

$13.99

TCaseInputShaftSeal

from

$8.49

Product Features:

Brand may vary by location

Top-Quality Output Shaft Pilot Bearings for 1981 Chevrolet K20s

Choose a high-quality OEM or aftermarket Output Shaft Pilot Bearing for Chevrolet K20s and enjoy top-notch performance from $17.99.

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from

$17.99

Product Features:

RIGHT TYPE: Needle bearings are application-specific for the repair occasion, using either caged or full complement designs
PREMIUM MATERIALS: Precision manufactured using high-quality materials for outstanding durability and performance
OE-STYLE DESIGN: Engineered to meet OE specifications
COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on

from

$26.49

Product Features:

RIGHT TYPE: Needle bearings are application-specific for the repair occasion, using either caged or full complement designs
PREMIUM MATERIALS: Precision manufactured using high-quality materials for outstanding durability and performance
OE-STYLE DESIGN: Engineered to meet OE specifications
COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on

Our Top Pick for a 1981 Chevrolet K20 Transfer Case Adapter Gasket

Invest in a durable Transfer Case Adapter Gasket for your 1981 Chevrolet, knowing you’re getting trusted brands and expert craftsmanship.

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from

$11.99

TCase Adapter Gasket

Input Shaft Bearings for 1981 Chevrolet K20s

Make a smart move for your 1981 Chevrolet K20 with products all priced from $7.59 to $94.99.

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from

$11.29

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$19.49

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$94.99

Product Features:

BUILT TO LAST: Advanced heat treatment process for strength
PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on

from

$7.59

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

Top-Rated Transfer Case Brands For Your 1981 Chevrolet K20

When it comes to finding the perfect Transfer Case for your 1981 Chevrolet K20, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 5 trusted brands. We carry the most popular Transfer Case 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 Transfer Case from us here at Advance Auto Parts is a smart move for both you and your 1981 Chevrolet K20, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 1981 Chevrolet K20 Transfer Cases

If you’re looking for a top-quality Transfer Case for your 1981 Chevrolet K20, Advance Auto Parts has exactly what you need with our selection of National Transfer Cases. We have 3 National Transfer Cases in stock for this fitment, all known for their durability and precision fit. With prices starting at just $17.99 and an average cost of $24.99, you’ll find the perfect Transfer Case for your needs and budget. National Transfer Cases for the 1981 Chevrolet K20 come highly rated, with over 9 customer reviews and an impressive average rating of 4.3 stars. Choosing a National Transfer Case from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

from $20.49

(1)

Multi-Purpose Seal

“Perfect replacement for the piece of you know what leaky rear output seal that came with my 231 SYE kit.”

from $36.49

(1)

Shaft Repair Sleeve

“Fixed my Ford F-150 4.2. Fit well and installation tool seated the sleeve exactly where it needed to be. Super easy to use and covered the grooved s”

from $17.99

(7)

Multi-Purpose Bearing

“National bearings amazingly made in USA. Did the job.”

Top-Quality DriveWorks 1981 Chevrolet K20 Transfer Cases

For those in search of a high-quality Transfer Case for their 1981 Chevrolet K20, Advance Auto Parts offers a great selection of DriveWorks Transfer Cases. With 3 DriveWorks Transfer Cases in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Transfer Cases start at just $4.99, with an average price of $6.16, giving you a range of options to suit your budget. Backed by over 9 customer ratings and an average rating of 4.3 stars, DriveWorks Transfer Cases provide both reliability and excellent performance. Choosing a DriveWorks Transfer Case from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.

from $5.49

(4)

Oil Seal

“Couple taps of hammer and went right in”

from $4.99

(3)

Oil Seal

“Good part, cheap price”

from $7.99

(2)

Needle Bearing

“Great product”

FAQs for 1981 Chevrolet K20 Transfer Cases

What are the best-selling Transfer Cases for 1981 Chevrolet K20s?

Out of 34 Transfer Cases that fit 1981 Chevrolet K20s, the following parts are the top sellers:

Oil Seal (5440610) – $4.99
Taper Bearing Cone (5050359) – $11.29
Oil Seal (5442613) – $4.99

What’s the price range for 1981 Chevrolet K20 Transfer Cases?

The prices of Transfer Cases for the 1981 Chevrolet K20 range from $4.99 up to $153.99 for the most premium parts.

What is the average price of a Transfer Case for a 1981 Chevrolet K20?

The average price for Transfer Cases for the 1981 Chevrolet K20 is $30.08. Keep in mind the variety of part types within our Transfer Case category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Transfer Cases for other Chevrolet K20 model years?

Yes, we carry Transfer Cases for 10 model years of Chevrolet K20s between 1975 and 1986. The following model years are the most popular for Transfer Case purchases: 1986, 1985, 1984, 1983, 1982, 1980, 1979, 1978, and 1977.

What are the cheapest Transfer Cases for my 1981 Chevrolet K20?

The cheapest 1981 Chevrolet K20 Transfer Cases we carry are:

Oil Seal (5440610) – $4.99
Oil Seal (5442613) – $4.99
TCaseOutputShaftSeal (12007699) – $4.99
TCaseOilPmpHouseSeal (12009344) – $4.99
Oil Seal (5440998) – $5.49

Does Advance Auto Parts sell Transfer Cases for any other 1981 Chevrolet models?

Yes. We stock Transfer Cases for 24 other popular 1981 Chevrolet models. Some of the most popular are 1981 Impala Transfer Cases, 1981 Malibu Transfer Cases, 1981 Camaro Transfer Cases, 1981 Monte Carlo Transfer Cases, and 1981 Corvette Transfer Cases.

What are the top-rated Transfer Cases that fit the 1981 Chevrolet K20?

The one 1981 Chevrolet K20 Transfer Case we have in stock is the Oil Seal. It is rated 5 stars and costs $4.99.

What types of Transfer Cases do you sell for my 1981 Chevrolet K20?

As of 11/2/25, these are some of the most in-demand types of Transfer Cases for a 1981 Chevrolet K20:

Can I get help with 1981 Chevrolet K20 Transfer Case orders?

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

What is your return policy for Chevrolet K20 Transfer Cases?

Advance Auto Parts keeps returns simple. For new Chevrolet K20 Transfer Cases and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

1981 Chevrolet K20 Transfer Cases

FAG US – Cup (Part No.LM104911)

Driveworks – Needle Bearing (Part No.S-B-2110)

National – Multi-Purpose Seal (Part No.341022)

National – Shaft Repair Sleeve (Part No.99225)

Driveworks – Oil Seal (Part No.S-9613S)

Dorman – Oil Drain Plug Standard M22-1.50, Head Size 30mm (Part No.090-061CD)

National – Multi-Purpose Bearing (Part No.208-LO)

National – Shaft Repair Sleeve (Part No.99187)

Driveworks – Taper Bearing Cone (Part No.S-HM-88649)

FAG US – Bearing (Part No.B2110)

National – Multi-Purpose Bearing (Part No.J-2416)

National – Multi-Purpose Bearing (Part No.B-2110)

National – Multi-Purpose Seal (Part No.710928)

National – Multi-Purpose Seal (Part No.3173)

Driveworks – Oil Seal (Part No.S-3946)

Driveworks – Oil Seal (Part No.S-9449)

USA Standard Gear – TCaseShiftForkInsert (Part No.70666)

Driveworks – Oil Seal (Part No.S-9449)

Driveworks – Oil Seal (Part No.S-3946)

USA Standard Gear – TCaseOutputShaftSeal (Part No.71503)

National – Multi-Purpose Seal (Part No.3946)

National – Multi-Purpose Seal (Part No.3173)

National – Multi-Purpose Seal (Part No.710928)

USA Standard Gear – TCaseInputShaftSeal (Part No.70552)

Driveworks – Manual Transmission Input Shaft Seal (Part No.S-481181-N)

National – Multi-Purpose Bearing (Part No.B-2110)

National – Multi-Purpose Bearing (Part No.J-2416)

USA Standard Gear – TCase Adapter Gasket (Part No.74586)

Driveworks – Taper Bearing Cone (Part No.S-M-88048)

Driveworks – Taper Bearing Cone (Part No.S-HM-88649)

National – Bearings (Part No.N-1211-L)

FAG US – Bearing (Part No.B2110)