1984 Chevrolet K20 Differentials

Name: Replacement Bare Case For GM 8.5" & 8.6" Dura Grip
Brand: Yukon Gear
SKU: 20107
Price: 386.99 USD

Please Select your Vehicle to See Exact Fit Parts

Keep Your 1984 Chevrolet K20 in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1984 Chevrolet K20 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Covers, Differential Bearings, and Differential Oil. 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 $11.99 with an average 4.3 star rating. Motive Gear and Felpro offer similar pricing and quality, backed by strong customer feedback. With over 3,810 reviews and a solid 4 star average, you can shop with confidence knowing other Chevrolet K20 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1984 Chevrolet K20 Differential at Advance Auto Parts is around $223.11, with a range that starts at $2.59 and goes up to $1,355.00. With 320 options in stock from 15 trusted brands, finding the right fit is easy. Popular picks like Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket, 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 4WD Components and Universal Joints. At Advance Auto Parts, we’re here to help you keep your 1984 Chevrolet K20 in peak condition, inside and out.

Looking for the perfect Differential for your 1984 Chevrolet K20? 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 Chevrolet K20. Whether you’re driving a 1984 model or another popular model year like 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1985, and 1986, 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 1984 Chevrolet K20 Differentials

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$386.99

Replacement bare case for GM 8.5″ & 8.6″ Yukon Dura Grip. Fits both 28 & 30 spline applications. This carrier case is for a Yukon Dura Grip ONLY. It is NOT a replacement carrier for a stock positraction.

Product Features:

Dura Grip positraction carrier case
Does not include spider gears
Fits GM 8.5″ and 8.6″
Fits 2.76 and up ratios only

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$13.49

National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:

Premium bearing design matches OEM specifications
Precision manufactured using premium-grade steel for outstanding durability and performance
Crowned raceways and rollers to ensure even load distribution for maximum life
Industry leading coverage
Professional technicians know they can depend on National

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$23.99

Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.

Product Features:

Cross pin bolt
Fits GM 9.5″ and 9.25″ IFS

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$27.99

The Yukon Zip Locker is the latest in on-demand traction. Its air-operated design allows you to switch from an open differential to 100% lockup when you need it, giving you the ultimate in driver select ability.

Product Features:

Bulkhead fitting

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$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
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

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$124.99

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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$6.79

This differential pinion shaft lock bolt 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 differential pinion shaft lock bolt matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this bolt 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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$3.99

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

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$29.99

Yukon shim kits are precision machined and tailored for each individual application to ensure you have the right shims for every set up.

Product Features:

Super carrier shim kit for GM 9.5″
Interlocking design makes installation much easier

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$209.99

USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), threading locking compound, marking compound with brush and gasket.

Product Features:

Spider gear kit
Fits GM 8.5″ 28 spline open differential
Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.

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$47.99

Yukon Gear & Axle spider gear kits feature higher quality materials and better manufacturing techniques than OEM to ensure a longer lasting spider gear set. Kit delivers everything needed for a complete and proper spider gear set replacement.

Product Features:

Shim kit
Fits GM 9.5″ Eaton positraction

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$284.99

Product Features:

GM 14BL 10.5 R/P 5.13 THICK MG

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$289.99

Yukon Gear and Axle manufactures a complete line of general replacement and performance series of pinion yokes for many street, racing, and heavy-duty off-road applications.

Product Features:

Fits Dana Spicer 30 and 44
26 spline
1350 u-joint size
Outside snap ring design
3.625″ snap ring span
1.188″ cap diameter
Strap style

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$1.99

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

Product Features:

Meets or exceeds OE specifications

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$17.99

Yukon Mighty Seals use the latest design and manufacturing technologies to produce a precision fit that seals tight and lasts for years to come.

Product Features:

Pinion seal
Fits Dana Spicer 25, 27, 30, 40 and 50

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$13.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$44.99

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

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

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$10.49

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

Product Features:

Meets or exceeds OE specifications

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$189.99

Set-up carrier bearing (2 bearings, no races) 25590. No return.

Product Features:

Set up bearing kit
Fits Dana Spicer 44
Easily slips on and off carrier journals to allow for easier carrier shim adjustment

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$188.99

Yukon Mini Spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier in place of the spider gears and delivers 100% power to both tires at all times. These units are not recommended for street-driven vehicles. Full spools are recommended for vehicles with large tires or high horsepower.

Product Features:

Fits GM 8.5″ with 30 spline axles
Installs into a standard open carrier case
Provides 100% traction to both wheels at all times
Not recommended for street driven vehicles

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$3.99

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

Product Features:

Meets or exceeds OE specifications

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$22.99

Product Features:

KIT SHIM GM 10.5 14 BLT

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$41.99

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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$28.49

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

Product Features:

Meets or exceeds OE specifications

from

$561.99

Yukon Gear & Axle spider gear kits utilize the highest quality materials and best production techniques in the industry to ensure a longer lasting spider gear set. Kit delivers everything needed for a complete and proper spider gear set replacement.

Product Features:

33 spline axles
Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers
Does not include clutches

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$61.99

Yukon Gear & Axle manufactures a full line of top-quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers, and other general maintenance items. You can count on Yukon to fulfill all your differential small parts needs.

Product Features:

Cross pin shaft
Fits GM 8.5″
Chromoly steel for added strength

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$1497.99

Yukon front 4340 Chrome-Moly replacement axle kit for ’69-’80 GM truck and Blazer, Dana 44 with 19/30 splines. Yukon 4340 Chrome-Moly axles provide up to 50% increased strength over stock axles for use in extreme performance applications with large tires and high horsepower. Yukon’s 4340 axles are manufactured using the latest technologies and the highest quality materials to ensure high strength and long life. This kit comes with inner & outer axles for both left and right sides along with Yukon Superjoints. Limited Lifetime warranty covers manufacturing defects and axle breakage for as long as you own the vehicle. This warranty is not transferable to another party. “No Questions Asked” replacement for first warranty return, however Yukon reserves the right to either replace axle or refund original purchase price after the first warranty claim. Yukon (through Randy’s ring & pinion) makes final determination on warranty considerations.

Product Features:

30 spline inner and 19 spline outer
Fits Dana Spicer 44 in 1969-1980 GM 1/2 ton
Includes inner and outer 4340 Chromoly axles and Yukon Super Joints

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$15.99

Side gear thrust washer
Fits GM 8.5″

Popular 1984 Chevrolet K20 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

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 Clutch Packs

Differential Mini Spools

Differential Ring and Pinions

Differential End Yokes

Differential Pinion Supports

Differential Lock Assemblies

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 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 Gear Thrust Washers

Differential Drive Pinion Gear Bearing Retainer Bolts

Differential Clutch Pack Clips

Differential Carrier Bearing Set

Axle Differential Bearing and Race Set

Best-Selling 1984 Chevrolet K20 Differential Bearings

Upgrade your K20 with one of our 13 best-selling Differential Bearings, earning an average 4.38 stars rating across 14 reviews.

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from

$11.99

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

$10.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$23.99

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

$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

from

$46.99

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

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$38.99

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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$30.99

We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.

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

$23.99

Cross pin bolt
Fits GM 9.5″ and 9.25″ IFS

from

$18.99

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

from

$17.99

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

from

$11.99

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

from

$10.99

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

from

$6.99

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

Top-Quality Differential Oil for 1984 Chevrolet K20s

Choose a high-quality OEM or aftermarket Differential Oil for Chevrolet K20s and enjoy top-notch performance from $12.49.

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from

$12.49

Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the No. 1 ATF product, suitable for use in 95% of vehicles. And now, it’s recommended for most belt & chain-driven continuously variable transmissions (CVT). Featuring advanced additives to prevent the major causes of transmission breakdown, it’s designed to help prevent leaks, reduce wear & tear, and maximize performance. Has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Valv MaxLife Multi-Vehicle ATF is suitable for most Ford, GM, Toyota, Honda, Nissan, Hyundai, Subaru, BMW, Mercedes, Volvo, VW & Audi vehicles. Recommended for use in: GM DEXRON-II, DEXRON-III, DEXRON-VI, and DEX-CVT; Ford MERCON LV; Toyota/Lexus Type T, T-II, T-IV, WS, CVTF FE, and CVTF TC; Honda/Acura ATF-Z1 and Honda CVT; Nissan/Infiniti Matic-D, Matic-J, Matic-K and Matic-S; Hyundai/Kia SP-II, SP-III, SP-IV and SPH-IV; BMW 7045E, ETL 8072B, LA2634 and LT71141; Allison C-4; Mercedes-Benz NAG-1; Volvo 1161521, 1161540, 97340 and 1273.41; Subaru ATF HP, Lineartronic chain CVT and CVT-II, Lineartronic High Torque CVT, and CV-30; and VW/Audi G-052-025-A2 and G-052-162-A1. CURRENTLY UNABLE TO SHIP THIS PRODUCT TO CUSTOMERS LOCATED IN CALIFORNIA

Product Features:

FOR USE IN 95% OF VEHICLES INCLUDING MOST CVTs in operation with US registered light duty applications
HIGH PERFORMANCE CONDITIONING AGENTS prolong seal elasticity to prevent leaks
IMPROVED DURABILITY & TRANSMISSION LIFE with anti-wear technology to avoid costly repairs
ENHANCED HIGH & LOW TEMP PERFORMANCE supports transmission fluid in all weather situations

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$57.99

Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials. This kit includes three quarts of oil and a bottle of Yukon Limited Slip Friction modifier that reduces noise and chatter in clutch driven positraction units and limited slip differentials.

Product Features:

Includes three quarts of conventional oil and one 4oz bottle of Yukon positraction additive

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$44.99

Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.

Product Features:

Includes three quarts of conventional oil

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$148.99

Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection. This kit includes four quarts of oil and a bottle of Yukon Limited Slip Friction modifier that reduces noise and chatter in clutch driven positraction units and limited slip differentials.

Product Features:

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

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$99.99

Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.

Product Features:

Includes three quarts of Redline Shockproof oil

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$137.99

Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.

Product Features:

Includes four quarts of Redline Shockproof oil

Top Picks for 1984 Chevrolet K20 Rear Differential Cover Gaskets

Invest in one of our 6 durable Rear Differential Cover Gaskets for your 1984 Chevrolet, knowing you’re getting trusted brands and expert craftsmanship.

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from

$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

$13.99

9.5″ GM cover gasket.

Product Features:

Cover gasket
Fits GM 9.5″

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$13.99

14T cover gasket.

Product Features:

Cover gasket
Fits GM 10.5″ 14 bolt truck

Performance Differential Gasket - Gm 10.5 Axle - 14 Bolt

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$34.99

Spicer performance differential cover gaskets offer all-makes coverage for street, strip, drag, and off-road applications. These gaskets are reusable offering a clean release during replacement. Built with a mechanically and chemically bonder woven steel.

Product Features:

Made to adhere without messy RTV sealant This saves on install time by eliminating the time needed for RTV cure.
Provides no re-torque design with maximum compression and sealing.
Manufactured with proprietary high-density performance material.
Made in the USA.

from

$3.99

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

Product Features:

Meets or exceeds OE specifications

from

$3.99

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

Product Features:

Meets or exceeds OE specifications

Top-Rated Rear Housing Cover Gaskets for 1984 Chevrolet K20s

Make a smart move for your 1984 Chevrolet K20 with products all priced from $7.99 to $8.99.

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from

$8.29

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

$8.99

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

from

$7.99

Product Features:

Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
Dana engineering-approved for fit, form and function
Meets or exceeds OE specifications

Top-Rated Differential Brands For Your 1984 Chevrolet K20

When it comes to finding the perfect Differential for your 1984 Chevrolet K20, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 15 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 1984 Chevrolet K20, providing peace of mind with parts that meet or exceed OEM standards.

Popular Felpro 1984 Chevrolet K20 Differentials

If you’re looking for a top-quality Differential for your 1984 Chevrolet K20, 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 $8.29 and an average cost of $9.42, you’ll find the perfect Differential for your needs and budget. Felpro Differentials for the 1984 Chevrolet K20 come highly rated, with over 228 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 $8.29

(13)

Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket

“works good”

from $8.99

(20)

Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket

“Perfect fit”

Top-Quality National 1984 Chevrolet K20 Differentials

For those in search of a high-quality Differential for their 1984 Chevrolet K20, 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 $11.99, with an average price of $18.49, giving you a range of options to suit your budget. Backed by over 4 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 $24.49

(1)

Multi Purpose Seal

“Fits right the first time… No more leaks…”

from $18.99

(1)

Multi-Purpose Seal

“Fit my 1996 Chevrolet pinion housing perfectly. No leaks.”

from $11.99

(2)

Bearing Race

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

FAQs for 1984 Chevrolet K20 Differentials

What are the best-selling Differentials for 1984 Chevrolet K20s?

Out of 320 Differentials that fit 1984 Chevrolet K20s, the following parts are the top sellers:

Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket (5185823) – $10.99
Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket (5723531) – $8.29
Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket (3215601) – $8.99

What’s the price range for 1984 Chevrolet K20 Differentials?

The prices of Differentials for the 1984 Chevrolet K20 range from $2.59 up to $1,355.00 for the most premium parts.

What is the average price of a Differential for a 1984 Chevrolet K20?

The average price for Differentials for the 1984 Chevrolet K20 is $223.11. 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 K20 model years?

Yes, we carry Differentials for 10 model years of Chevrolet K20s between 1975 and 1986. The following model years are the most popular for Differential purchases: 1986, 1985, 1983, 1982, 1981, 1980, 1979, 1978, and 1977.

What are the cheapest Differentials for my 1984 Chevrolet K20?

The cheapest 1984 Chevrolet K20 Differentials we carry are:

Differential Pinion Gear Washer (10282533) – $2.59
Ring Gear Bolt (20520168) – $2.99
Differential Crush Sleeve (20520169) – $2.99
Differential Ring Gear Bolt (10282159) – $2.99
Differential Cross Shaft (10282201) – $2.99

Does Advance Auto Parts sell Differentials for any other 1984 Chevrolet models?

Yes. We stock Differentials for 28 other popular 1984 Chevrolet models. Some of the most popular are 1984 Impala Differentials, 1984 Camaro Differentials, 1984 Monte Carlo Differentials, 1984 Corvette Differentials, and 1984 Caprice Differentials.

What types of Differentials do you sell for my 1984 Chevrolet K20?

As of 6/2/26, these are some of the most in-demand types of Differentials for a 1984 Chevrolet K20:

Can I get help with 1984 Chevrolet K20 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 K20 Differentials?

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

1984 Chevrolet K20 Differentials

Yukon Gear – Replacement Bare Case For GM 8.5" & 8.6" Dura Grip (Part No.20107)

National – Bearing Race (Part No.02820)

Yukon Gear – Standard Open and Gov-Loc Cross Pin Bolt, M10X1.5 Thread for 9.5" & 9.25" GM IFS (Part No.33342)

Yukon Gear – Zip Locker Bulkhead Fitting (Part No.34001)

Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 55075)

Richmond Gear – Differential Mini Spool (Part No.78-1028-1)

Dorman – Help – Differential Shaft Lock Bolt (Part No.81048)

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

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

USA Standard Gear – Differential Spider Gear Kits (Part No.39026)

Yukon Gear – Eaton Positraction Shim Kit for 9.5" GM (Part No.16059)

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

Yukon Gear – Replacement Yoke for Dana 30, 44, and 50 with 26 Spline and 1350 U-Joint (Part No.41021)

Pro-King – Differential Ring Gear Bolt (Part No.742E935)

Yukon Gear – Dana 25 / 27 / 30 / 36 / 44 / 50 Pinion Seal replacement (Part No.30128)

Driveworks – Taper Bearing Set (Part No.S-A-38)

National – Multi-Purpose Bearing (Part No.A-42)

Pro-King – Differential Pinion Nut (Part No.744A961)

Yukon Gear – Set Up Bearing (Part No.56037)

Yukon Gear – Mini Spool for GM 8.5" with 30 Spline Axles (Part No.32233)

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

Motive Gear – Differential Pinion Shim Kit (Part No.GM14SK)

National – Shaft Repair Sleeve (Part No.99199)

Pro-King – Differential Cross Shaft (Part No.742G673)

Yukon Gear – Dura Grip Spider Gear Set for GM 9.5" Differential with 33 Spline Axles (Part No.16166)

Yukon Gear – Chrome Moly Cross Pin Shaft for Mini-Spool for 8.5" GM (Part No.32238)

Yukon Gear – Front 4340 Chrome-Moly Replacement Axle Kit For ’69-’80 GM Truck And Blazer (Part No.21414)

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

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

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

Yukon Gear – Steel Cover for GM 10.5" 14 Bolt Truck (Part No.32345)

Yukon Gear – Chrome Cover for 9.5" GM (Part No.32018)

Yukon Gear – Chrome Cover for 10.5" GM 14 Bolt Truck (Part No.32013)

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

National – Bearing Race (Part No.LM501314)

Driveworks – Taper Bearing Cone (Part No.S-LM-501349)

National – Tapered Roller Bearing Cone (Part No.387AS)

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

Schaeffler – Cone (Part No.KJLM506849-A)

National – Tapered Roller Bearing Cone (Part No.JLM506849A)

Schaeffler – Bearing – CRB (Cylindrical Roller Bearing) (Part No.FC67147)

Yukon Gear – Standard Open and Gov-Loc Cross Pin Bolt, M10X1.5 Thread for 9.5" & 9.25" GM IFS (Part No.33342)

Schaeffler – Cup (Part No.382A)

Schaeffler – Wheel Balancer Cone (Part No.KLM104949)

Schaeffler – Cup (Part No.LM104911)

Schaeffler – Cup (Part No.M88010)

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

Valvoline – MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.VV324)

Yukon Gear – 3 Qt – 80W90 Conventional Gear Oil with Posi Additive (Part No.15003)

Yukon Gear – 3 Qt – Penzoil 80W90 Conventional Gear Oil (Part No.15002)

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)

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

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

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

Spicer – Performance Differential Gasket – Gm 10.5 Axle – 14 Bolt (Part No.RD51995)

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

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

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

Felpro – Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket (Part No.RDS 55387)

Victor Reinz – Axle Housing Cover Gasket (Part No.71-14834-00)