1966 Chevrolet K20 Pickup Differentials

Name: Dana 44 Pinion Gear Thrust Washer
Brand: Yukon Gear
SKU: 33281
Price: 4.99 USD

Please Select your Vehicle to See Exact Fit Parts

Keep Your 1966 Chevrolet K20 Pickup in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1966 Chevrolet K20 Pickup looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Oil, Rear Housing Cover Gaskets, and Differential Axle Shafts. 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, Valvoline, and Felpro. For example, National Differentials start at just $22.99 with an average 4.3 star rating. Valvoline and Felpro offer similar pricing and quality, backed by strong customer feedback. With over 1,860 reviews and a solid 4 star average, you can shop with confidence knowing other Chevrolet K20 Pickup owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1966 Chevrolet K20 Pickup Differential at Advance Auto Parts is around $210.50, with a range that starts at $3.99 and goes up to $1,566.99. With 183 options in stock from 13 trusted brands, finding the right fit is easy. Popular picks like 3 Qt – 80W90 Conventional Gear Oil With Posi Additive, 3 Qt – Penzoil 80W90 Conventional Gear Oil, and Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket start at just $7.99 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 1966 Chevrolet K20 Pickup in peak condition, inside and out.

Looking for the perfect Differential for your 1966 Chevrolet K20 Pickup? 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 Pickup. Whether you’re driving a 1966 model or another popular model year like 1965, 1967, 1968, 1969, 1970, 1971, 1972, 1973, and 1974, 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 1966 Chevrolet K20 Pickup Differentials

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$4.99

Dana 44, GM55P & 8.2″ GM pinion gear Thrust washer.

Product Features:

Pinion gear thrust washer for Dana Spicer 44, GM 8.2″ and 1955-1964 GM passenger car

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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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$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″

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$83.99

Product Features:

Seal housing for Dana Spicer 44
Includes o-rings

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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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$998.99

The Yukon Grizzly Locker is the ultimate in locking differentials for street, off-road, & drag racing. Grizzly Lockers provide 100% power to both tires, while still allowing for disengagement while negotiating turns. The Yukon Grizzly locker is a mechanical locking differential. It features a forged case and 8620 internals for maximum strength. It’s patented design reduces common locker failures. All units assembled in the USA! All Grizzly Lockers are backed by the best warranty in the business! Yukon covers the replacement unit and covers any collaterally damaged parts and associated labor, up to $2,000!

Product Features:

Fits Dana Spicer 44 with 30 spline axles
3.92 and up ratio only
Patented internal design reduces common locker failures
8620 internals for added strength
Assembled in the USA

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$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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$41.99

Product Features:

Belleville plate, non-splined
Fits Dana Spicer 44 Powr Lok

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$41.49

National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

Design type: spring loaded; multi-lip
Temperature range: -40 Deg. F to 400 Deg. F / -40 Deg. C to 204 Deg. C
Excellent high temperature capabilities
Compatible with wide range of fluids
Delivers quality and reliable performance for every type of repair

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$194.99

Mini Spool for Dana 44 with 30 spline axles. Mini spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier and give 100% power to both tires at all times. These units are not recommended for street-driven vehicles. We recommend full spools for vehicles with large tires or high horsepower. These units come with a one year warranty against manufacturing defects.

Product Features:

Fits Dana Spicer 44 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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$1566.99

21 Piece bearing race driver set. (Box wt: 140lbs) No return.

Product Features:

Bearing race driver set
21 pieces
All steel construction

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$9.99

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.

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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$12.99

Dana 30 & Dana 44 roll PIN, 0.235″ DIA, for cross pin shaft.

Product Features:

Roll pin for Dana Spicer 30 and Dana Spicer 44
0.235″ diameter

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$318.99

Product Features:

Spider gear kit
Fits GM 10.5″ 14 bolt truck open differential
Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers.

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$22.99

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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$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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$249.99

If you’re repairing or rebuilding a front or rear differential and want the best performance and longevity from the bearings being replaced, choose this premium differential kit. It includes high-precision bearings manufactured to tighter tolerances and engineered to last longer than common lower-grade bearings that have more backlash when subjected to the torque generated within the differential. This convenient kit also saves the time needed to source individual components. Check the product attributes and fitment details to select the correct premium differential kit for your application.

Product Features:

Ideal solution – this premium differential bearing kit features high-precision bearings to help ensure longer bearing life, prevent backlash, and restore proper differential operation
Direct replacement – the components in this all-in-one kit are engineered to precisely match the fit and function of the original equipment bearings for a seamless installation
Increased reliability – the premium bearings in this kit are manufactured to exacting tolerances and specifications from high quality materials to help ensure optimal performance
Application-specific – check the product attributes and fitment details to choose the correct kit for your application

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$223.99

Yukon replacement trail repair kit for Dana 30 and 44 with 1310 size U/joint and straps. This kit comes with a yoke, U/joint, pinion seal, U/bolt or strap kit, pinion nut, and pinion nut washer (if applicable).

Product Features:

Fits Dana Spicer 30 and 44
1310 u-joint size
Kit includes yoke, U-joint, pinion seal, pinion nut and washer, straps, bolts and threadlocker

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$108.99

Yukon Minimum installation kits are a low cost solution for gear changes in newer vehicles where the bearings can be reused. This kit uses all high quality components to ensure a smooth set up. kit includes a pinion seal, crush sleeve (if applicable), complete shim kit, marking compound and brush.

Product Features:

Fits 1988 and down GM 10.5″ 14 bolt truck
Included are a pinion seal, crush sleeve , complete shim kit, marking compound and brush.

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$44.99

3 Qt. Penzoil 80W90 conventional gear Oil.

Product Features:

Includes three quarts of conventional oil

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$689.99

The Yukon carrier bearing Puller works with an impact gun to quickly and safely remove carrier bearings without damaging them. This unit comes with a handy bench top stand and works with up to most standard one ton applications. This unit is works with differentials up to one-ton applcations. It is not compatible with Dana 70HD, Dana 80, 10.25″ & 10.5″ Ford, or GM & Chrysler 11.5″ differentials.

Product Features:

Carrier bearing puller
Works with an impact gun to safely and easliy remove carrrier bearings
Not compatible with Dana 70HD, Dana 80, Ford 10.25″ and 10.5″ or Gm and Chrysler 11.5″ applications

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$33.99

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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$11.99

10.5″ GM 14 bolt truck ring gear bolt 4.56 & up. 9/16″ x 18. 2.522″ overall length.

Product Features:

Ring gear bolt for GM 10.5″ 14 bolt truck
4.56 and up ratio
1/2″ x 18 thread
2.522″ overall length

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$38.99

National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:

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

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$1302.99

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 selectability. The Yukon Zip locker is an air operated locker that provides selectable traction for off road or street use. This unit features 4320 Chrome Moly internals for added strength. Assembled in the USA! compressor sold separately. All Zip Lockers are backed by the best warranty in the business! All Zip Lockers come with a six (6) year warranty, including any collaterally damaged parts and associated labor, up to $2,000, for the first two (2) years.

Product Features:

Fits Dana Spicer 44 with 30 spline axles
3.73 and down ratio only
Forged case and 8620 internals for added strength
Works with a variety of air delivery systems
Assembled in the USA

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$61.99

Product Features:

MINI INSTALL KIT DANA 44

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$12.99

Product Features:

Cover gasket
Fits Dana Spicer 44

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$40.99

GM HO72 (Yukon gear ONLY ) pinion depth shims.

Product Features:

Pinion depth shim kit
Fits GM HO72

Popular 1966 Chevrolet K20 Pickup Differentials Categories

Differential Oil

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 Ring and Pinions

Differential End Yokes

Differential Lock Assemblies

Differential Air System Seal Housings

Differential Spools

Differential Carrier Bearings

Automatic Transmission Differential Cover Gaskets

Front Differential Cover Gaskets

Rear Housing Cover Gaskets

Differential Pinion Bearing Kits

Differential Seals

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 Ring and Pinion Kits

Limited Slip Differential Assemblies

Differential Clutch Pack Clips

Differential Lock Thrust Blocks

Most Popular Differential Oil for 1966 Chevrolet K20 Pickups

Enhance your 1966 Chevrolet K20 Pickup with one of the 6 Differential Oil we have in stock, starting at just $35.99.

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$35.99

Valvoline MaxLife Multi-Vehicle ATF is a full-synthetic formulation with advanced additives to prevent the major causes of transmission breakdown and help extend transmission life. Developed to help prevent leaks, maximize transmission performance, reduce transmission wear, and maintain smooth shifting longer than conventional fluids. It is suitable for use in a broad range of ATF applications including most Ford, GM, Toyota, Honda, Nissan, Hyundai, BMW, Mercedes, Volvo, VW & Audi. Recommended for use in the following applications: GM DEXRON-II, DEXRON-III, DEXRON-VI, Ford MERCON LV, Toyota/Lexus Type T, T-II, T-IV, WS, Honda/Acura, ATF-Z1, Nissan/Infiniti Matic-D, Matic-J, Matric-K, Matic-S, Hyundai/Kia SP-II, SP-III, SP-IV, SPH-IV, BMW 7045E, ETL 8072B, LA2634, LT71141, Allison C-4, Mercedes Benz NAG-1, Volvo 1161521, 1161540, 97340, 1273.41, and VW/Audi G-052-025-A2, G-052-162-A1. For CVT applications Valvoline recommends Valvoline Full Synthetic CVT Fluid.

Product Features:

Formulated with full-synthetic base oils and long life friction modifiers to help improve smooth shifting, eliminate slippage and shudder, prevent clutch wear and improve drivability longer than conventional fluids
High-performance seal conditioners maintain and preserve the elasticity of seals to help prevent leaks in high mileage transmissions
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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$57.99

3 Qt. Penzoil 80W90 conventional gear Oil. W/ bottle of Posi additive.

Product Features:

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

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$44.99

3 Qt. Penzoil 80W90 conventional gear Oil.

Product Features:

Includes three quarts of conventional oil

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$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

Best-Selling 1966 Chevrolet K20 Pickup Rear Housing Cover Gaskets

Upgrade your K20 Pickup with one of our 2 best-selling Rear Housing Cover Gaskets, earning an average 3.75 stars rating across 14 reviews.

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$7.99

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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$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

Top-Quality Differential Axle Shafts for 1966 Chevrolet K20 Pickups

Choose a high-quality OEM or aftermarket Differential Axle Shaft for Chevrolet K20 Pickups and enjoy top-notch performance from $109.99.

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$232.99

Full-floating, 35 spline diameter, non-drilled blank axle shaft for Dana 60. 40″ inches long. Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H axles come with a one year warranty against manufacturing defects.

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$159.99

Genuine Spicer light vehicle axle products are manufactured to the same high standards as original equipment (OE) parts because they are OE parts. That means when an automotive axle part is replaced with a genuine Spicer part, you are getting the same performance and reliability you have come to expect. And because Dana is constantly revolutionizing the technology behind its Dana axles and Spicer products, the replacement car axle or component you purchase today may even exceed the standards set for the original equipment part that you are replacing.

Product Features:

Genuine OE quality. Tested and proven.
Ultrasonically tested for internal cracks that magnetic testing can miss.
Built from high grade steel that stands up to any grade on the market.
Engineered for consistent quality and durability.

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$109.99

Product Features:

Drive flange cap
Fits Dana 44

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$109.99

Product Features:

Drive flange cap
Fits Dana 44
Yukon engraved

Top Picks for 1966 Chevrolet K20 Pickup Differential Covers

Invest in one of our 4 durable Differential Covers for your 1966 Chevrolet, knowing you’re getting trusted brands and expert craftsmanship.

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$67.99

0.080″ thick Chrome replacement cover for Dana 44.

Product Features:

Fits standard rotation Dana Spicer 44
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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$271.99

Differential

Top-Rated Differential Bearings for 1966 Chevrolet K20 Pickups

Make a smart move for your 1966 Chevrolet K20 Pickup with products all priced from $15.99 to $57.99.

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$22.99

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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$57.99

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

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$15.99

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

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$17.99

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

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$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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$32.99

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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$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

Top-Rated Differential Brands For Your 1966 Chevrolet K20 Pickup

When it comes to finding the perfect Differential for your 1966 Chevrolet K20 Pickup, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 13 trusted brands. We carry the most popular Differential brands including Valvoline, Felpro, and National, and more, all known for their exceptional customer ratings (average brand rating of 4.8 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 1966 Chevrolet K20 Pickup, providing peace of mind with parts that meet or exceed OEM standards.

Popular Valvoline 1966 Chevrolet K20 Pickup Differentials

If you’re looking for a top-quality Differential for your 1966 Chevrolet K20 Pickup, 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 $35.99, you’ll find the perfect Differential for your needs and budget. Valvoline Differentials for the 1966 Chevrolet K20 Pickup come highly rated, with over 446 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.

from $35.99

(446)

MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon

“Good quality great price”

Top-Quality Felpro 1966 Chevrolet K20 Pickup Differentials

For those in search of a high-quality Differential for their 1966 Chevrolet K20 Pickup, Advance Auto Parts offers a great selection of Felpro Differentials. With 1 Felpro 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, giving you a range of options to suit your budget. Backed by over 10 customer ratings and an average rating of 4.6 stars, Felpro Differentials provide both reliability and excellent performance. Choosing a Felpro Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.

from $7.99

(10)

Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket

“Fit perfect”

FAQs for 1966 Chevrolet K20 Pickup Differentials

What are the best-selling Differentials for 1966 Chevrolet K20 Pickups?

Out of 183 Differentials that fit 1966 Chevrolet K20 Pickups, the following parts are the top sellers:

3 Qt – 80W90 Conventional Gear Oil With Posi Additive (11645418) – $57.99
3 Qt – Penzoil 80W90 Conventional Gear Oil (11644279) – $44.99
Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (5185793) – $7.99

What’s the price range for 1966 Chevrolet K20 Pickup Differentials?

The prices of Differentials for the 1966 Chevrolet K20 Pickup range from $3.99 up to $1,566.99 for the most premium parts.

What is the average price of a Differential for a 1966 Chevrolet K20 Pickup?

The average price for Differentials for the 1966 Chevrolet K20 Pickup is $210.50. 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 Pickup model years?

Yes, we carry Differentials for 13 model years of Chevrolet K20 Pickups between 1960 and 1974. The following model years are the most popular for Differential purchases: 1974, 1973, 1972, 1971, 1970, 1969, 1968, 1967, and 1965.

What are the cheapest Differentials for my 1966 Chevrolet K20 Pickup?

The cheapest 1966 Chevrolet K20 Pickup Differentials we carry are:

Dana 25 / 27 / 30 / 36 / 44 / 53 Pinion Nut Washer Replacement (11642796) – $3.99
Dana 44 Pinion Gear Thrust Washer (11642998) – $4.99
Dana 44, Ford 8" / 9", And Model 20 Side Gear Thrust Washer Replacement (11642264) – $5.99
Replacement Floater Roll Pin For Dana 44 & 8.75" Chrysler Power Lok (11642577) – $5.99
Replacement Outer Oil Slinger For Dana 25, 27, 30, 44 & 50 (11642565) – $5.99

Does Advance Auto Parts sell Differentials for any other 1966 Chevrolet models?

Yes. We stock Differentials for 21 other popular 1966 Chevrolet models. Some of the most popular are 1966 Impala Differentials, 1966 Malibu Differentials, 1966 Corvette Differentials, 1966 Caprice Differentials, and 1966 El Camino Differentials.

What types of Differentials do you sell for my 1966 Chevrolet K20 Pickup?

As of 3/1/26, these are some of the most in-demand types of Differentials for a 1966 Chevrolet K20 Pickup:

Can I get help with 1966 Chevrolet K20 Pickup 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 Pickup Differentials?

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

1966 Chevrolet K20 Pickup Differentials

Yukon Gear – Dana 44 Pinion Gear Thrust Washer (Part No.33281)

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

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

Yukon Gear – Seal Housing For Dana 44, Zip Locker, With O-Rings (Part No.34013)

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

Yukon Gear – Dana 44 Grizzly Locker Replacement (Part No.28001)

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

Yukon Gear – Powr Lok Drive Belleville Plate For Dana 44 (Part No.16171)

National – Multi-Purpose Seal (Part No.5778V)

Yukon Gear – Mini Spool For Dana Spicer 44 With 30 Spline Axles (Part No.32055)

Yukon Gear – Bearing Race Driver Set, 21 Piece (Part No.56030)

Felpro – Differential Carrier Gasket Round Shaped 10 Bolt Hole Gasket (Part No.RDS 5090)

Yukon Gear – Dana 30 / 44 Roll Pin Replacement (Part No.33312)

USA Standard Gear – Standard Spider Gear Set For GM 10.5" 14 Bolt Truck (Part No.39022)

National – Tapered Roller Bearing Cone (Part No.368A)

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)

Dorman – Premium Ring and Pinion Master Bearing and Installation Kit (Part No.797-105)

Yukon Gear – Replacement Trail Repair Kit For Dana 30 And 44 With 1310 Size U/Joint And Straps (Part No.32278)

Yukon Gear – Minor Install Kit For ’87 & Down 10.5" GM 14 Bolt Truck Differential (Part No.12045)

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

Yukon Gear – The Carrier Bearing Puller (Part No.56034)

National – Tapered Roller Bearing Cone (Part No.31594)

Yukon Gear – 10.5" GM 14 Bolt Truck Ring Gear Bolt (Part No.33050)

National – Shaft Repair Sleeve (Part No.99155)

Yukon Gear – Zip Locker For Dana 44 With 30 Spline Axles, 3.73 & Down (Part No.34018)

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

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

Yukon Gear – Pinion Depth Shims For GM Ho72 (Part No.55005)

Valvoline – MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon (Part No.773775)

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 Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 6629)

Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 6095-1)

Yukon Gear – Full-Floating, Blank 35 Spline Diameter, Non-Drilled Axle Shaft For Dana 60 (Part No.21005)

Spicer – Axle Shaft, Dana 44 (Part No.620200)

Yukon Gear – Drive Flange Cap For Dana 44 (Part No.32134)

Yukon Gear – Drive Flange Cap For Dana 44, Engraved (Part No.32135)

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

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 – Differential (Part No.29101)

National – Tapered Roller Bearing Cone (Part No.368A)

National – Multi-Purpose Bearing (Part No.KD-11786-Y)

National – Bearing Race (Part No.362A)

National – Bearing Race (Part No.382S)

Schaeffler – Cone (Part No.K387-A)

National – Tapered Roller Bearing Cone (Part No.25577)

National – Bearing Race (Part No.25523)