1979 GMC K1500 Differentials

Keep Your 1979 GMC K1500 in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1979 GMC K1500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Rear Differential Cover Gaskets, Differential Oil, and Differential Covers. 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 Differentials from Trusted Brands

Looking for a reliable Differential? We’ve got you covered with options from brands you know and trust like National, Motive Gear, and FELPRO. For example, National Differentials start at just $7.99 with an average 4.3 star rating. Motive Gear and FELPRO offer similar pricing and quality, backed by strong customer feedback. With over 912 reviews and a solid 4 star average, you can shop with confidence knowing other GMC K1500 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1979 GMC K1500 Differential at Advance Auto Parts is around $248.24, with a range that starts at $2.59 and goes up to $1,969.99. With 461 options in stock from 14 trusted brands, finding the right fit is easy. Popular picks like DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart, DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart, and Differential Shaft Lock Bolt start at just $6.79 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Differential, 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 1979 GMC K1500 in peak condition, inside and out.

Looking for the perfect Differential for your 1979 GMC K1500? You’re in the right place. Below, you’ll find links to various types of Differentials that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Differentials, ensuring durability and a precise fit for your GMC K1500. Whether you’re driving a 1979 model or another popular model year like 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, and 1999, we’ve got you covered. Purchasing Differentials 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 Differentials that fit your vehicle.

Essential 1979 GMC K1500 Differentials

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$67.99

0.080″ thick Chrome replacement cover for Dana 44.

Product Features:

Fits standard rotation Dana Spicer 44
Chrome

from

$9.49

Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Product Features:

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered for the sealing repair environment
Validated for fit, form and function
Unsurpassed quality you can trust

from

$6.99

Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:

All products are designed to meet or exceed OE quality, form, fit and funtion.

from

$46.99

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

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$232.99

Yukon standard open carrier case for ’00-’06 GM 8.6″, V2 – version 2 design.

Product Features:

Fits 2000-2006 GM 8.6″ with open differential

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$15.99

Standard open side gear thrust washer for 8.5″ GM.

Product Features:

Side gear thrust washer
Fits GM 8.5″

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$11.99

Valvoline DEX/MERC ATF is a high-quality transmission fluid formulated to meet the challenging demands of many automatic transmissions. Its responsive low-temperature fluidity is beneficial in both electronic and hydraulic controlled transmissions and transaxles. Recommended for use in the following applications: MERCON*, DEXRON*-III, Ford M2C138-CJ and M2C166-H, Allison C-4 and TES-389, and Caterpillar TO-2.

Product Features:

Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
Enhanced anti-shudder protection for smooth shifting and maximum power transfer
Developed with anti-wear technology to help improve transmission durability
Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures

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$61.99

Product Features:

MINI INSTALL KIT DANA 44

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$12.99

GM 9.5″ ring gear bolt. 12mm x 1.5.

Product Features:

Ring gear bolt for GM 9.2″
12mm x 1.5

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$26.99

Pinion seal for 9.5″ GM (’79-’97).Yukon Mighty seal.

Product Features:

Pinion seal
Fits 1997 and down GM 9.5″

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$19.99

Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.

Product Features:

PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
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

$399.99

USA Standard ring & pinion sets are the right choice to add confidence to your install. USA Standard Gear offers a full line of ring & pinion sets for a variety of common & hard to find applications. USA standard gear offers a standard one year warranty against defects on their ring & pinion sets.

Product Features:

Fits GM 8.5″ and 8.6″
8.50″ ring gear diameter
30 spline pinion
10 ring gear bolts
3.23 ratio

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$26.99

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:

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.

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$9.99

Product Features:

KIT SHIM PINION

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$6.99

Product Features:

Oil baffle for Dana Spicer 44

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$3.99

Replacement pinion nut washer for Dana 25, 27, 30, 36, 44 & 53.

Product Features:

Pinion nut washer for Dana Spicer 25, 27, 30, 44 and 50

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$109.99

Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for GM 8.2″ & 8.5″ differential. This kit contains carrier bearings, races and shims.

Product Features:

Fits GM 7.5″, 7.625″ 8.2″ and 8.5″
Includes carrier bearings and races and “super” carrier shim kit

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$11.99

8.5 front cover gasket.

Product Features:

Cover gasket
Fits GM 8.5″ front

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$49.99

Standard open cross pin (0.795″ diameter) for 8.5″ GM. fits some Eaton positractions.

Product Features:

Cross pin shaft for GM 8.5″ and 8.6″
Fits standard open differentials only
0.795″ diameter

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$26.99

Dana 30 & Dana 44 Power Lok bolt, left hand, & 8.75″ Chrysler & 55P.

Product Features:

Power Lok case bolt for Dana Spicer 30, Dana Spicer 44, Chrysler 8.75″ and 1955-1964 GM passenger car
Left hand thread

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$23.99

Pinion nut washer for GM 12 bolt car & truck, 55-62 GM car & truck, GM 8.2″ & 63-79 Corvette.

Product Features:

Pinion nut washer for GM 12 bolt car and truck, 1955-1964 GM car and truck, GM 8.2″ and 1963-1979 Corvette.

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$9.99

5/16″-18 cover bolt, Dana Spicer 25, 27, 30 and 44, AMC Model 20 and Model 35, Chrysler 9.25 rear, GM 7.5″, 7.625″, 8.2″, 8.5″, 12 bolt passenger car and truck.

Product Features:

Cover bolt for Dana Spicer 25, 27, 30 and 44, AMC Model 20 and Model 35, GM 7.5″, 7.625″, 8.2″, 8.5″ and 12 bolt passenger car and truck.
1/2″ head

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$151.99

MiniSpool

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$221.99

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 o

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$5.99

This differential crush sleeve is designed to match the fit and function of the original sleeve on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

Direct replacement – this differential crush sleeve is designed to match the fit and function of the original sleeve on specified vehicles
Required replacement – when servicing the differential
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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$859.99

The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 internals for added strength along with composite clutches for high performance and long life. All units are Rebuildable and many offer upgrades to increase aggressiveness for racing applications. Each unit carries a one year warranty against defects. This unit has larger bearing journals for added strength & uses heavy-duty carrier bearings & races.

Product Features:

Fits GM 8.5″ with 28 spline axles
2.73 ratio and up only
4-spring, clutch style positraction
Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
Fully rebuildable
Assembled in the USA

from

$4.99

3/8″ ring gear bolt washer for GM 12 bolt car & truck, 8.2 BOP & more.

Product Features:

Ring gear bolt washer for GM 12 bolt car and truck, 1955-1964 passenger car, 1963-1979 Corvette and 8.2″ Buick, Oldsmobile and Pontiac

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$67.99

Yukon Ring & Pinion sets give you the confidence of knowing you’re running gears designed for the harshest of conditions. Whether it’s on the street, off-road, or at the track; Yukon ring & pinion sets deliver unrivaled performance & quality. Yukon uses t

Product Features:

Powr Lok button kit
Fits Dana Spicer 30, 44 and Chrysler 8.75″

Popular 1979 GMC K1500 Differentials Categories

Differential Oil

Rear Differential Cover Gaskets

Differential Open Unit and Components

Differential Covers

Differential Pinion Shaft Lock Bolts

Differential Bearings

Differential Axle Shafts

Differential Pinion Pilot Bearings

Front Housing Cover Gaskets

Differential Cover Bolts

Differential Carriers

Differential Bearing Kits

Front Differential Pinion Bearings

Differential Spider Gear Kits

Differential Rebuild Kits

Differential Carrier Shim Kits

Differential Pinion Seals

Differential Cover Plugs

Differential Clutch Packs

Differential Mini Spools

Differential Ring and Pinions

Differential End Yokes

Differential Pinion Supports

Differential Lock Assemblies

Differential Air System Seal Housings

Rear Differential Pinion Bearings

Differential Spools

Differential Carrier Bearings

Front Differential Cover Gaskets

Rear Housing Cover Gaskets

Differential Pinion Bearing Kits

Differential Seals

Complete Differentials

Differential Ring Gear Bolts

Bearing Race Drivers

Differential Pinion Shafts

Differential Carrier Bearing Shims

Differential Crush Sleeves

Differential Side Bearing Spacers

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Gear Install Kits

Differential Cross Pins

Differential Side Gear Thrust Washers

Differential Pinion Bearing Baffles

Differential Pinion Gear Thrust Washers

Differential Drive Pinion Oil Deflectors

Differential Carrier Bolts

Differential Pinion Gear Washers

Differential Ring and Pinion Kits

Limited Slip Differential Assemblies

Differential Lock Washers

Differential Clutch Pack Clips

Differential Lock Thrust Blocks

Most Popular Rear Differential Cover Gaskets for 1979 GMC K1500s

Enhance your 1979 GMC K1500 with one of the 7 Rear Differential Cover Gaskets we have in stock, starting at just $3.99.

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$9.49

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered for the sealing repair environment
Validated for fit, form and function
Unsurpassed quality you can trust

from

$20.99

Mr. Gasket Axle Housing/Differential Cover or Rear End Gaskets are manufactured from a .047 inch thick cellulose/nitrile composite gasket material for excellent sealing and durability. They are precision die-cut for an excellent fit. Fits 1964-1970 Chevrolet 8.2 inch 10 bolt & 1970-1981 GM 8.5 inch ring gear

Product Features:

.047″ thick cellulose/nitrile composite gasket material
Precision die cut
Reusable

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$31.49

Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:

All products are designed to meet or exceed OE quality, form, fit and funtion.

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$12.99

Product Features:

Cover gasket
Fits Dana Spicer 44

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$12.99

12T cover gasket.

Product Features:

Cover gasket
Fits GM 12 bolt truck

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$10.99

8.2″ & 8.5″ rear cover gasket.

Product Features:

Cover gasket
Fits GM 8.2″, 8.5″ and 8.6″

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$3.99

Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:

All products are designed to meet or exceed OE quality, form, fit and funtion.

Best-Selling 1979 GMC K1500 Differential Oil

Upgrade your K1500 with one of our 5 best-selling Differential Oil, earning an average 5 stars rating across 2 reviews.

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$14.49

Valvoline DEXRON-VI/MERCON LV ATF is a full-synthetic transmission fluid formulated with advanced additive technology to meet and exceed the requirements of the General Motors DEXRON-VI specification. It is officially licensed and approved by GM and is fully back-serviceable and can be used wherever DEXRON-II and/or DEXRON-III are recommended. Recommended for use in the following applications: DEXRON-VI, DEXRON-III, DEXRON-II, and Allison C-4.

Product Features:

Formulated with full-synthetic base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
Enhanced anti-shudder protection for smooth shifting and maximum power transfer
Developed with anti-wear technology to help improve transmission durability
Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures

from

$11.99

Formulated with premium base stocks and advanced additive technology to meet the challenging demands of automatic transmissions
Enhanced anti-shudder protection for smooth shifting and maximum power transfer
Developed with anti-wear technology to help improve transmission durability
Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures

from

$148.99

Redline Synthetic “Shock Proof” Oil with positraction Additive. 4 Quarts.

Product Features:

Includes four quarts of Redline Shockproof oil and one 4oz bottle of Yukon positraction additive

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$99.99

Redline Synthetic “Shock Proof” Oil. 3 Quarts.

Product Features:

Includes three quarts of Redline Shockproof oil

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$137.99

Redline Synthetic “Shock Proof” Oil. 4 Quarts.

Product Features:

Includes four quarts of Redline Shockproof oil

Top-Quality Differential Covers for 1979 GMC K1500s

Choose a high-quality OEM or aftermarket Differential Cover for GMC K1500s and enjoy top-notch performance from $44.99.

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from

$74.99

Chrome cover for 8.6″, 8.5″ and 8.2″ GM rear.

Product Features:

Fits GM 8.2″, 8.5″ and 8.6″
Chrome

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$67.99

0.080″ thick Chrome replacement cover for Dana 44.

Product Features:

Fits standard rotation Dana Spicer 44
Chrome

from

$44.99

Chrome cover for 8.5″ GM front.

Product Features:

Fits GM 8.5″ front
Chrome

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$255.99

Polished aluminum cover for 8.6″, 8.2″ and 8.5″ GM rear.

Product Features:

Fits GM 8.5″ and 8.6″
Finned polished aluminum

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$123.99

Product Features:

Fits GM 8.2″, 8.5″ and 8.6″
Steel

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$64.99

Chrome cover for GM 12T.

Product Features:

Fits GM 12 bolt truck
Chrome

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$129.99

Product Features:

Fits standard rotation Dana Spicer 44
Steel

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$359.99

Aluminum Girdle replacement cover for Dana 44 TA HD.

Product Features:

Fits standard rotation Dana Spicer 44
Aluminum girdle cover

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$296.99

Polished aluminum cover for 8.5″ GM.

Product Features:

Fits GM 8.5″ front
Finned polished aluminum

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$271.99

Differential

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$269.99

Polished aluminum cover for 12T GM.

Product Features:

Fits GM 12 bolt truck
Finned polished aluminum

Top Picks for 1979 GMC K1500 Rear Housing Cover Gaskets

Invest in one of our 2 durable Rear Housing Cover Gaskets for your 1979 GMC, knowing you’re getting trusted brands and expert craftsmanship.

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$10.99

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Unsurpassed quality you can trust
Validated for fit, form and function
Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

from

$7.99

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered for the sealing repair environment
Validated for fit, form and function
Unsurpassed quality you can trust

Top-Rated Differential Bearings for 1979 GMC K1500s

Make a smart move for your 1979 GMC K1500 with products all priced from $6.99 to $28.99.

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from

$9.29

Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

Product Features:

PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION – Crowned raceways for even load distribution
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

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$21.99

Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.

Product Features:

PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
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

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$27.99

Product Features:

CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
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

$19.99

Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.

Product Features:

PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
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

$8.49

Product Features:

PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION: Crowned raceways for even load distribution
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

$28.99

Positraction cross pin bolt for GM 12P and 12T.

Product Features:

Cross pin bolt for GM 12 bolt passenger car and truck
For OEM positraction applications only

from

$19.99

Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

Product Features:

PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION – Crowned raceways for even load distribution
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

$11.29

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

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$9.99

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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$6.99

Cross pin bolt for Chrysler 8.25″, 9.25″ rear, Ford 7.5″, 8.8″, GM 12 bolt car & truck, 7.2″ IFs, 7.5″, 7.6″, 8.0″, 8.25″ IFS & 8.5″.

Product Features:

Cross pin bolt for Chrysler 8.25″ and 9.25″ rear, Ford 7.5″ and 8.8″, GM 12 botl car and truck, 8.5″, 8.25″ IFS, 8.0″, 7.625″, 7.5″ and 7.2″ IFS

Top-Rated Differential Brands For Your 1979 GMC K1500

When it comes to finding the perfect Differential for your 1979 GMC K1500, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 14 trusted brands. We carry the most popular Differential brands including FELPRO, National, and Motive Gear, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $7.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1979 GMC K1500, providing peace of mind with parts that meet or exceed OEM standards.

Popular FELPRO 1979 GMC K1500 Differentials

If you’re looking for a top-quality Differential for your 1979 GMC K1500, Advance Auto Parts has exactly what you need with our selection of FELPRO Differentials. We have 3 FELPRO Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $7.99 and an average cost of $9.49, you’ll find the perfect Differential for your needs and budget. FELPRO Differentials for the 1979 GMC K1500 come highly rated, with over 208 customer reviews and an impressive average rating of 4.6 stars. Choosing a FELPRO Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

from $10.99

(195)

Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket

“Worked as described”

from $9.49

(3)

Axle Housing Cover Gasket Irregular Shaped 12 Bolt Hole Gasket

“felpro gaskets are great”

from $7.99

(10)

Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket

“Fit perfect”

Top-Quality National 1979 GMC K1500 Differentials

For those in search of a high-quality Differential for their 1979 GMC K1500, Advance Auto Parts offers a great selection of National Differentials. With 3 National Differentials in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Differentials start at just $7.99, with an average price of $18.42, giving you a range of options to suit your budget. Backed by over 7 customer ratings and an average rating of 4.3 stars, National Differentials provide both reliability and excellent performance. Choosing a National Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.

from $37.99

(1)

Shaft Repair Sleeve

“Very delicate piece, but came shipped quite safely and not damaged. High quality.”

from $7.99

(4)

Bearing Race

“Goes with M88010 bearing cup. Application was the pinion bearing race for a Ford 9 Inch on a 1957 Ford F-100.”

from $9.29

(2)

Bearing Race

“Reasonable price and woks well. front diff 2006 Escalade esv”

FAQs for 1979 GMC K1500 Differentials

What are the best-selling Differentials for 1979 GMC K1500s?

Out of 461 Differentials that fit 1979 GMC K1500s, the following parts are the top sellers:

DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart (12079201) – $14.49
DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (12079139) – $11.99
Differential Shaft Lock Bolt (5707714) – $6.79

What’s the price range for 1979 GMC K1500 Differentials?

The prices of Differentials for the 1979 GMC K1500 range from $2.59 up to $1,969.99 for the most premium parts.

What is the average price of a Differential for a 1979 GMC K1500?

The average price for Differentials for the 1979 GMC K1500 is $248.24. Keep in mind the variety of part types within our Differential category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Differentials for other GMC K1500 model years?

Yes, we carry Differentials for 18 model years of GMC K1500s between 1980 and 1999. The following model years are the most popular for Differential purchases: 1999, 1998, 1997, 1996, 1995, 1994, 1993, 1992, and 1991.

What are the cheapest Differentials for my 1979 GMC K1500?

The cheapest 1979 GMC K1500 Differentials we carry are:

Differential Pinion Gear Washer (10282533) – $2.59
Ring Gear Bolt (20520168) – $2.99
Differential Cross Shaft (10282201) – $2.99
Differential Ring Gear Bolt (10282159) – $2.99
Differential Crush Sleeve (10282146) – $2.99

Does Advance Auto Parts sell Differentials for any other 1979 GMC models?

Yes. We stock Differentials for 12 other popular 1979 GMC models. Some of the most popular are 1979 Jimmy Differentials, 1979 K2500 Differentials, 1979 C2500 Differentials, 1979 C1500 Differentials, and 1979 K3500 Differentials.

What are the top-rated Differentials that fit the 1979 GMC K1500?

The one 1979 GMC K1500 Differential we have in stock is the Differential Pinion Gear Washer. It costs $2.59.

What types of Differentials do you sell for my 1979 GMC K1500?

As of 11/2/25, these are some of the most in-demand types of Differentials for a 1979 GMC K1500:

Can I get help with 1979 GMC K1500 Differential orders?

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

What is your return policy for GMC K1500 Differentials?

Advance Auto Parts keeps returns simple. For new GMC K1500 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

1979 GMC K1500 Differentials

Yukon Gear – Replacement Chrome Cover For Dana 44 (Part No.32004)

Felpro – Axle Housing Cover Gasket Irregular Shaped 12 Bolt Hole Gasket (Part No.RDS 13391)

Pro-King – Differential Cover Plug (Part No.742G484)

National – Shaft Repair Sleeve (Part No.99170)

Yukon Gear – Standard Open Carrier Case For ’00-’06 GM 8.6" V2 Design (Part No.20096)

Yukon Gear – Standard Open Side Gear Thrust Washer For 8.5" GM (Part No.33304)

Valvoline – DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (Part No.798153)

Motive Gear – Differential Gear Install Kit (Part No.D44IK)

Yukon Gear – GM 9.5" Ring Gear Bolt (Part No.33047)

Yukon Gear – Pinion Seal For 9.5" GM (’79-’97) (Part No.30043)

National – Tapered Roller Bearing Cone (Part No.LM501349)

USA Standard Gear – Ring & Pinion Gear Set For GM 8.5" In A 3.23 Ratio (Part No.36212)

Richmond Gear – Differential Cross Shaft (Part No.CSPD44)

Motive Gear – Differential Pinion Shim Kit (Part No.1102)

Yukon Gear – Replacement Oil Baffle For Dana 44 (Part No.33000)

Yukon Gear – Dana 25 / 27 / 30 / 36 / 44 / 53 Pinion Nut Washer Replacement (Part No.33163)

Yukon Gear – 8.5" & 8.2" GM Carrier Installation Kit (Part No.57008)

Yukon Gear – 8.5 Front Cover Gasket (Part No.23021)

Yukon Gear – Standard Open Cross Pin (0.795" Diameter) For 8.5" GM – Fits Some Eaton Positractions (Part No.33401)

Yukon Gear – Dana 30 & Dana 44 Power Lok Bolt, Left Hand, & 8.75" Chrysler & 55P (Part No.33234)

Yukon Gear – Pinion Nut Washer (Part No.33166)

Yukon Gear – Dana 25, 27, 30, 44, Model 20 And Model 35, GM 7.5", 8.2", 8.5", 12P, 12T, C9.25 Rear Cover Bolt (Part No.33286)

Richmond Gear – MiniSpool (Part No.78-1230-1)

Motive Gear – Differential Carrier (Part No.GM8.6L)

Dorman – Help – Pinion Crush Sleeves (Part No.81057)

Yukon Gear – Dura Grip Positraction For GM 8.5" With 28 Spline Axles (Part No.26015)

Yukon Gear – 3/8" Ring Gear Bolt Washer For GM 12 Bolt Car & Truck, 8.2 Bop & More (Part No.33347)

Yukon Gear – Powr Lok Button Kit For Dana 30, Dana 44 & Chrysler 8.75" (Part No.33536)

Felpro – Axle Housing Cover Gasket Irregular Shaped 12 Bolt Hole Gasket (Part No.RDS 13391)

Mr. Gasket – Differential Gasket (Part No.84B)

Pro-King – Differential Cover Gasket (Part No.742G303A)

Yukon Gear – Dana 44 Cover Gasket Replacement (Part No.23006)

Yukon Gear – GM 12 Bolt Truck Cover Gasket (Part No.23015)

Yukon Gear – 8.2" & 8.5" Rear Cover Gasket (Part No.23020)

Pro-King – Differential Cover Gasket (Part No.742G303)

Valvoline – DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.822405)

Valvoline – DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart (Part No.798153)

Yukon Gear – Redline Synthetic "Shock Proof" Oil With Positraction Additive – 4 Quarts (Part No.15005)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 3 Quarts (Part No.15000)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 4 Quarts (Part No.15004)

Yukon Gear – Chrome Cover For 8.6", 8.5" And 8.2" GM Rear (Part No.32017)

Yukon Gear – Replacement Chrome Cover For Dana 44 (Part No.32004)

Yukon Gear – Chrome Cover For 8.5" GM Front (Part No.32016)

Yukon Gear – Polished Aluminum Cover For 8.6", 8.2" And 8.5" GM Rear (Part No.32030)

Yukon Gear – Steel Cover For GM 8.2" & 8.5" Rear (Part No.32332)

Yukon Gear – Chrome Cover For GM 12 Bolt Truck (Part No.32012)

Yukon Gear – Steel Cover For Dana 44 Standard Rotation (Part No.32319)

Yukon Gear – Aluminum Girdle Replacement Cover For Dana 44 Ta HD (Part No.32110)

Yukon Gear – Polished Aluminum Cover For 8.5" GM (Part No.32029)

Yukon Gear – Differential (Part No.29101)

Yukon Gear – Polished Aluminum Cover For GM 12 Bolt Truck (Part No.32027)

Felpro – Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket (Part No.RDS 55028-1)

Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 6629)

National – Bearing Race (Part No.LM501314)

National – Tapered Roller Bearing Cone (Part No.LM104949)

National – Multi-Purpose Bearing (Part No.A-36)

National – Tapered Roller Bearing Cone (Part No.LM501349)

National – Bearing Race (Part No.LM501310)

Yukon Gear – Positraction Cross Pin Bolt For GM 12 Bolt Car And Truck (Part No.33344)

National – Bearing Race (Part No.25523)

FAG US – Cup (Part No.M88010)

FAG US – Cup (Part No.LM501310)

Yukon Gear – Cross Pin Bolt (Part No.33067)