1979 Chevrolet C20 Differentials

Keep Your 1979 Chevrolet C20 in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1979 Chevrolet C20 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 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 Differentials from Trusted Brands

Looking for a reliable Differential? We’ve got you covered with options from brands you know and trust like DriveWorks, Valvoline, and National. For example, DriveWorks Differentials start at just $18.49 with an average 4.3 star rating. Valvoline and National offer similar pricing and quality, backed by strong customer feedback. With over 184 reviews and a solid 4 star average, you can shop with confidence knowing other Chevrolet C20 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1979 Chevrolet C20 Differential at Advance Auto Parts is around $218.66, with a range that starts at $0.91 and goes up to $1,141.99. With 179 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 Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket start at just $8.29 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 Drive Shafts and Axles and Universal Joints. At Advance Auto Parts, we’re here to help you keep your 1979 Chevrolet C20 in peak condition, inside and out.

Essential 1979 Chevrolet C20 Differentials

Motive Gear – Axle Shaft (Part No.MG1774)

Axle Shaft

from

$175.99
The Motive Gear replacement axle shaft offers an OE-quality axle shaft at a fraction of the OE cost. Manufactured from 1541H material on high-tolerance CNC equipment, this axle shaft is designed to provide a perfect fit every time.

Product Features:
  • AXLE SHAFT 10.5″ 30 SPL. 37 9/16″ R.H.
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Yukon Gear – Bearing Race Driver (Part No.56020)

Bearing Race Driver

from

$215.99
Bearing race driver. No return.

Product Features:
  • Bearing race driver
  • Fits M802011 race
  • All steel construction
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Dorman – Differential Cover (Part No.697-703)

Differential Cover

from

$46.99
This direct replacement differential cover matches the fit and function of the original equipment diff cover for a reliable, leak-free repair. It features a durable design, made to strict specifications, to help ensure reliable service life.

Product Features:
  • Direct replacement – this differential cover matches the fit and function of the original equipment diff cover on select vehicles
  • Reliable repair – the smart solution for fixing an existing cover that’s rusted, damaged or leaking differential fluid
  • Durable construction – this differential cover is made according to strict engineering standards to help ensure dependability
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
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Yukon Gear – Redline Synthetic "Shock Proof" Oil – 4 Quarts (Part No.15004)

Redline Synthetic "Shock Proof" Oil - 4 Quarts

from

$137.99
Redline Synthetic “Shock Proof” Oil. 4 Quarts.

Product Features:
  • Includes four quarts of Redline Shockproof oil
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Driveworks – Wheel Bearing (Part No.S-R1581-TV)

Wheel Bearing

from

$27.99
Product Features:
  • Brand may vary by location
See More

Yukon Gear – Pinion Install Kit For ’88 And Older 10.5" GM 14 Bolt Truck Differential (Part No.13058)

Pinion Install Kit For '88 And Older 10.5" GM 14 Bolt Truck Differential

from

$349.99
Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings & races can be reused. This kit uses Timken bearings and races along with a high quality pinion seal and small parts. Included in this kit are the pinion bearings and races, pilot bearing (if applicable), crush sleeve (if applicable), complete pinion shim kit, thread locker, and marking compound with brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your pinion gear.

Product Features:
  • Fits 1988 and down GM 10.5″ 14 bolt truck
  • Included are pinion bearings and races, pinion seal, crush sleeve, complete pinion shim kit, and marking compound with brush.
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Richmond Gear – Differential Cross Shaft (Part No.80-0269-1)

Differential Cross Shaft

from

$64.99
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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Powertrax – No-Slip Traction System (Part No.9207883005)

No-Slip Traction System

from

$551.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
  • Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
  • Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.
  • Powertrax® = Extreme Traction Systems!
  • See More

    Yukon Gear – Differential Carrier (Part No.57015)

    Differential Carrier

    from

    $251.99
    Differential Carrier

    Yukon Gear – Pinion Nut Washer (Part No.33167)

    Pinion Nut Washer

    from

    $14.99
    Pinion nut washer for GM 7.2″ IFS, 7.5″, 7.6″, 7.6″ IFS, 8.5″, 8.6″ & 9.5″.

    Product Features:
    • Pinion nut washer for GM 7.2″ IFS, 7.5″, 7.625″, 7.6″ IFS, 8.5″, 8.6″ and 9.5″.
    See More

    Motive Gear – Differential Ring and Pinion (Part No.GM10.5-513X)

    Differential Ring and Pinion

    from

    $284.99


    Product Features:
    • GM 14BL 10.5 R/P 5.13 THICK MG
    See More

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

    MiniSpool

    from

    $151.99
    MiniSpool

    Yukon Gear – Cross Pin Shaft For GM 9.5", Fits Standard & Dura Grip Or Eaton Posi Carrier (Part No.33205)

    Cross Pin Shaft For GM 9.5", Fits Standard & Dura Grip Or Eaton Posi Carrier

    from

    $32.99
    Product Features:
    • Cross pin shaft
    • Fits GM 9.5″
    • Dura Grip positraction
    See More

    Yukon Gear – Eaton-Type Positraction Carbon Clutch Kit With 14 Plates For GM 14T And 10.5" (Part No.16112)

    Eaton-Type Positraction Carbon Clutch Kit With 14 Plates For GM 14T And 10.5"

    from

    $304.99
    Yukon 1480 Lifetime Series U/Joint. 4.188″ snap ring span, 1.375″ cap diameter. Outside snap ring.

    Product Features:
    • Clutch kit
    • Fits GM 10.5″ 14 bolt truck with Eaton positraction
    • Carbon fiber clutches
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    Yukon Gear – Steel Spool For GM 14 Bolt Truck With 30 Spline Axles, 4.10 & Down (Part No.32048)

    Steel Spool For GM 14 Bolt Truck With 30 Spline Axles, 4.10 & Down

    from

    $539.99
    Yukon Performance steel spool for GM 14T with 30 spline axles. fits 4.10 and down. Yukon performance spools are made from the highest quality materials to ensure high strength and long life in performance applications. Spools provide 100% power to both tires at all times and are a lower cost alternative to lockers. Spools are not recommended for street driven vehicles. Yukon Performance spools come with a one year warranty against manufacturing defects.

    Product Features:
    • Fits GM 10.5″ 14 bolt truck with 30 spline axles
    • 4.10 and down ratio only or 4.56 and up thick gears
    • Provides 100% traction to both wheels at all times
    • Not recommended for street driven vehicles
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    Motive Gear – Differential Master Bearing Kit – Timken (Part No.R14RMKLT)

    Differential Master Bearing Kit - Timken

    from

    $176.99
    Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

    Product Features:
    • KIT BRG & SEAL 14 BLT MSTR 4.56&UP
    See More

    National – Bearing Race (Part No.382A)

    Bearing Race

    from

    $10.99
    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
    See More

    Yukon Gear – Super Carrier Shim Kit For GM 9.5" (Part No.55003)

    Super Carrier Shim Kit For GM 9.5"

    from

    $29.99
    9.5″ GM differential carrier Supershim kit.

    Product Features:
    • Super carrier shim kit for GM 9.5″
    • Interlocking design makes installation much easier
    See More

    Motive Gear – Differential Gear Install Kit (Part No.GM12IK)

    Differential Gear Install Kit

    from

    $69.99


    Product Features:
    • MINI INSTALL KIT GM 12BLT 8.875 TRUCK
    See More

    Yukon Gear – Spider Gear Set For GM 9.5" Gura Drip Posi (Part No.16166)

    Spider Gear Set For GM 9.5" Gura Drip Posi

    from

    $561.99
    Yukon spider gear set for GM 9.5″ Gura Drip posi. This kit does not include clutches. This kit fits Yukon Dura Grip ONLY.

    Product Features:
    • Spider gear kit
    • Fits GM 9.5″ with Dura Grip positraction
    • Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
    See More

    Yukon Gear – 14T Side Gear Thrust Washer (Part No.33383)

    14T Side Gear Thrust Washer

    from

    $7.99
    14T side gear Thrust washer.

    Product Features:
    • Side gear thrust washer
    • Fits GM 10.5″ 14 bolt truck
    See More

    Yukon Gear – Pinion Seal For GM 14T (Part No.30023)

    Pinion Seal For GM 14T

    from

    $19.99
    Pinion seal for GM 14T.Yukon Mighty seal.

    Product Features:
    • Pinion seal
    • Fits 1998 and down GM 10.5″ 14 bolt truck
    See More

    Powertrax – Grip LS Traction System (Part No.LS201028)

    Grip LS Traction System

    from

    $463.99
    For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!
    See More

    National – Bearing Race (Part No.HM803110)

    Bearing Race

    from

    $20.49
    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
    See More

    Powertrax – Lock Right Locker (Part No.1950-LR)

    Lock Right Locker

    from

    $487.99
    The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!

    Product Features:
    • Powertrax® proves that you don’t have to choose between the superior traction of a locking differential and smooth handling and drivability of an open differential. Powertrax Lock-Right Lockers, No-Slip Traction Systems and GRIP limited slip differentials and lockers give you the best of both worlds!
    • The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
    • Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
    • Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.
    • Powertrax® = Extreme Traction Systems!
    See More

    Yukon Gear – Pinion Nut (Part No.33152)

    Pinion Nut

    from

    $9.99
    Pinion nut for GM 7.2″ IFS, 7.5″, 7.6″, 7.6″ IFS, 8.0″, 8.25″, 8.5″, 8.6″, 9.25″ IFS, 9.5″ & Oldsmobile Dropouts. 1 1/4″ socket, 7/8″ x 14 thread.

    Product Features:
    • Pinion nut for GM 7.2″, 7.5″, 7.625″, 8.0″, 8.25″ IFS, 8.5″, 8.6″, 9.25″ IFS and 9.5″
    • 7/8″ x 14 thread
    • 1 1/4″ socket
    See More

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

    Differential Gasket

    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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    Dorman – Differential Pinion Yoke Assembly (Part No.697-551)

    Differential Pinion Yoke Assembly

    from

    $232.99
    Worn or damaged differential end yoke causing driveline vibrations? This direct replacement end yoke matches the original equipment part for a trustworthy repair and reliable performance.

    Product Features:
    • Direct replacement – this differential end yoke matches the fit and construction of the original yoke
    • Excellent value – this replacement end yoke offers original equipment quality at a fraction of the price of dealer parts
    • Quality materials – this end yoke is machined from cast iron for strength and is precision machined for reliability
    • Validated fit – this differential end yoke has been tested to confirm accurate fit
    See More

    Most Popular Rear Differential Cover Gaskets for 1979 Chevrolet C20s

    Enhance your 1979 Chevrolet C20 with one of the 5 Rear Differential Cover Gaskets we have in stock, starting at just $3.99.

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

    Differential Gasket

    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
    See More

    Felpro – Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket (Part No.RDS 55063)

    Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket

    from

    $8.29
    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
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    Yukon Gear – GM 10.5′ 14 Bolt Truck Cover Gasket (Part No.23016)

    GM 10.5' 14 Bolt Truck Cover Gasket

    from

    $13.99
    14T cover gasket.

    Product Features:
    • Cover gasket
    • Fits GM 10.5″ 14 bolt truck
    See More

    Yukon Gear – 9.5" GM Cover Gasket (Part No.23023)

    9.5" GM Cover Gasket

    from

    $13.99
    9.5″ GM cover gasket.

    Product Features:
    • Cover gasket
    • Fits GM 9.5″
    See More

    Pro-King – Differential Cover Gasket (Part No.743B303)

    Differential Cover Gasket

    from

    $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.
    See More

    Best-Selling 1979 Chevrolet C20 Differential Oil

    Upgrade your C20 with one of our 5 best-selling Differential Oil, earning an average 5 stars rating across 2 reviews.

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

    DEXRON - VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart

    from

    $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
    See More

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

    DEX/MERC ATF Conventional Automatic Transmission Fluid, 1 Quart

    from

    $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
    See More

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

    Redline Synthetic "Shock Proof" Oil With Positraction Additive - 4 Quarts

    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
    See More

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

    Redline Synthetic "Shock Proof" Oil - 3 Quarts

    from

    $99.99
    Redline Synthetic “Shock Proof” Oil. 3 Quarts.

    Product Features:
    • Includes three quarts of Redline Shockproof oil
    See More

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

    Redline Synthetic "Shock Proof" Oil - 4 Quarts

    from

    $137.99
    Redline Synthetic “Shock Proof” Oil. 4 Quarts.

    Product Features:
    • Includes four quarts of Redline Shockproof oil
    See More

    Top-Quality Differential Pinion Seals for 1979 Chevrolet C20s

    Choose a high-quality OEM or aftermarket Differential Pinion Seal for Chevrolet C20s and enjoy top-notch performance from $19.79.

    Yukon Gear – Pinion Seal For GM 14T (Part No.30023)

    Pinion Seal For GM 14T

    from

    $19.99
    Pinion seal for GM 14T.Yukon Mighty seal.

    Product Features:
    • Pinion seal
    • Fits 1998 and down GM 10.5″ 14 bolt truck
    See More

    FAG US – Shaft Seal (Part No.SS3147)

    Shaft Seal

    from

    $32.49
    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
    See More

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

    Pinion Seal For 9.5" GM ('79-'97)

    from

    $26.99
    Pinion seal for 9.5″ GM (’79-’97).Yukon Mighty seal.

    Product Features:
    • Pinion seal
    • Fits 1997 and down GM 9.5″
    See More

    FAG US – Shaft Seal (Part No.SS2776)

    Shaft Seal

    from

    $19.79
    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
    See More

    Top Picks for 1979 Chevrolet C20 Differential Bearings

    Invest in one of our 6 durable Differential Bearings for your 1979 Chevrolet, knowing you’re getting trusted brands and expert craftsmanship.

    National – Bearing Race (Part No.382A)

    Bearing Race

    from

    $10.99
    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
    See More

    Driveworks – Tapered Cone/Cup Wheel Bearing Set (Part No.S-A-35)

    Tapered Cone/Cup Wheel Bearing Set

    from

    $26.99
    Value-priced bearing meets all cataloged application requirements.

    Product Features:
    • Brand may vary by location
    See More

    Driveworks – Tapered Cone Wheel Bearing Assembly (Part No.S-387-AS)

    Tapered Cone Wheel Bearing Assembly

    from

    $18.49
    Value-priced bearing meets all cataloged application requirements.

    Product Features:
    • Brand may vary by location
    See More

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

    Tapered Roller Bearing Cone

    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
    See More

    National – Bearing Race (Part No.LM501310)

    Bearing Race

    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
    See More

    Yukon Gear – Standard Open And Gov-Loc Cross Pin Bolt With M10X1.5 Thread For 9.5" And 9.25" GM IFS (Part No.33342)

    Standard Open And Gov-Loc Cross Pin Bolt With M10X1.5 Thread For 9.5" And 9.25" GM IFS

    from

    $23.99
    Product Features:
    • Cross pin bolt
    • Fits GM 9.5″ and 9.25″ IFS
    See More

    Differential Covers for 1979 Chevrolet C20s

    Make a smart move for your 1979 Chevrolet C20 with products all priced from $59.99 to $93.99.

    Yukon Gear – Steel Cover For GM 9.5", Threaded For Fill Plug, Plug Not Included (Part No.32333)

    Steel Cover For GM 9.5", Threaded For Fill Plug, Plug Not Included

    from

    $93.99
    Steel cover for GM 9.5″ Threaded for fill plug, fill plug not included.

    Product Features:
    • Fits GM 9.5″
    • Steel
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    Yukon Gear – Steel Cover For GM 10.5" 14 Bolt Truck (Part No.32345)

    Steel Cover For GM 10.5" 14 Bolt Truck

    from

    $92.99
    Product Features:
    • Fits GM 10.5″ 14 bolt truck
    • Steel
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    Yukon Gear – Chrome Cover For 9.5" GM (Part No.32018)

    Chrome Cover For 9.5" GM

    from

    $72.99
    Product Features:
    • Fits GM 9.5″
    • Chrome
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    Yukon Gear – Chrome Cover For 10.5" GM 14 Bolt Truck (Part No.32013)

    Chrome Cover For 10.5" GM 14 Bolt Truck

    from

    $59.99
    Chrome cover for GM 14T.

    Product Features:
    • Fits GM 10.5″ 14 bolt truck
    • Chrome
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    Top-Rated Differential Brands For Your 1979 Chevrolet C20

    When it comes to finding the perfect Differential for your 1979 Chevrolet C20, 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 Valvoline, DriveWorks, and National, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $10.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1979 Chevrolet C20, providing peace of mind with parts that meet or exceed OEM standards.

    Popular Valvoline 1979 Chevrolet C20 Differentials

    If you’re looking for a top-quality Differential for your 1979 Chevrolet C20, Advance Auto Parts has exactly what you need with our selection of Valvoline Differentials. We have 1 Valvoline Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $14.49, you’ll find the perfect Differential for your needs and budget. Valvoline Differentials for the 1979 Chevrolet C20 come highly rated, with over 2 customer reviews and an impressive average rating of 4.8 stars. Choosing a Valvoline Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
    DEXRON - VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart
    from $14.49
    (2)
    DEXRON – VI ATF Full Synthetic Automatic Transmission Fluid, 1 Quart
    “I’ve used this in my 2005 2500HD since I bought the truck with 20k on it now at 280k changed every other year maybe 40k I’d put on in two years, I pu”

    Top-Quality DriveWorks 1979 Chevrolet C20 Differentials

    For those in search of a high-quality Differential for their 1979 Chevrolet C20, Advance Auto Parts offers a great selection of DriveWorks Differentials. With 2 DriveWorks 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 $18.49, with an average price of $22.74, giving you a range of options to suit your budget. Backed by over 16 customer ratings and an average rating of 4.3 stars, DriveWorks Differentials provide both reliability and excellent performance. Choosing a DriveWorks Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
    Tapered Cone/Cup Wheel Bearing Set
    from $26.99
    (14)
    Tapered Cone/Cup Wheel Bearing Set
    “Advance Auto website when entering my 1989 Ford F150 doesn’t ask if it is 2 wheel or 4 wheel drive. So I had to return the first set”
    Tapered Cone Wheel Bearing Assembly
    from $18.49
    (2)
    Tapered Cone Wheel Bearing Assembly
    “Worked sell”

    FAQs for 1979 Chevrolet C20 Differentials

    What are the best-selling Differentials for 1979 Chevrolet C20s?

    Out of 179 Differentials that fit 1979 Chevrolet C20s, the following parts are the top sellers:

    What’s the price range for 1979 Chevrolet C20 Differentials?

    The prices of Differentials for the 1979 Chevrolet C20 range from $0.91 up to $1,141.99 for the most premium parts.

    What is the average price of a Differential for a 1979 Chevrolet C20?

    The average price for Differentials for the 1979 Chevrolet C20 is $218.66. 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 Chevrolet C20 model years?

    Yes, we carry Differentials for 10 model years of Chevrolet C20s between 1975 and 1986. The following model years are the most popular for Differential purchases: 1986, 1985, 1984, 1983, 1982, 1981, 1980, 1978, and 1977.

    What are the cheapest Differentials for my 1979 Chevrolet C20?

    The cheapest 1979 Chevrolet C20 Differentials we carry are:

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

    Yes. We stock Differentials for 22 other popular 1979 Chevrolet models. Some of the most popular are 1979 Impala Differentials, 1979 Malibu Differentials, 1979 Camaro Differentials, 1979 Monte Carlo Differentials, and 1979 Corvette Differentials.

    What types of Differentials do you sell for my 1979 Chevrolet C20?

    As of 11/2/25, these are some of the most in-demand types of Differentials for a 1979 Chevrolet C20:

    Can I get help with 1979 Chevrolet C20 Differential orders?

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

    What is your return policy for Chevrolet C20 Differentials?

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