1966 Chevrolet P20 Series Differentials

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Keep Your 1966 Chevrolet P20 Series 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 P20 Series 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 Axle Shafts, 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 Richmond Gear, Driveworks, and National. For example, Richmond Gear Differentials start at just $350.99 with an average 4.4 star rating. Driveworks and National offer similar pricing and quality, backed by strong customer feedback. With over 32 reviews and a solid 4.3 star average, you can shop with confidence knowing other Chevrolet P20 Series owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1966 Chevrolet P20 Series Differential at Advance Auto Parts is around $145.05, with a range that starts at $5.99 and goes up to $551.99. With 35 options in stock from 8 trusted brands, finding the right fit is easy. Popular picks like Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002, National Multi-Purpose Bearing, KD-11786-Y, and National Tapered Roller Bearing Cone, HM89449 start at just $25.49 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 P20 Series in peak condition, inside and out.

Essential 1966 Chevrolet P20 Series Differentials

Motive Gear – Motive Gear Differential Pinion Shim Kit, 1104 (Part No.1104)

Motive Gear Differential Pinion Shim Kit, 1104

from

$12.99
Motive Gear Differential Pinion Shim Kit, 1104.
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National – National Bearing Race, HM89410 (Part No.HM89410)

National Bearing Race, HM89410

from

$11.49
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
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Richmond Gear – Richmond Gear Differential Bearing Kit, 83-1018-M (Part No.83-1018-M)

Richmond Gear Differential Bearing Kit, 83-1018-M

from

$224.99
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.
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Felpro – Felpro Differential Carrier Gasket Round Shaped 10 Bolt Hole Gasket, RDS 4305 (Part No.RDS 4305)

Felpro Differential Carrier Gasket Round Shaped 10 Bolt Hole Gasket, RDS 4305

from

$8.99
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.
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Yukon Gear – Yukon Gear Full-Floating Blank, Dana 60, 35 Spline Diameter, Non-Drilled Axle Shaft, 21005 (Part No.21005)

Yukon Gear Full-Floating Blank, Dana 60, 35 Spline Diameter, Non-Drilled Axle Shaft, 21005

from

$232.99
Yukon Master Overhaul Kits give you all the high-quality parts you need to start and finish every differential job. Yukon offers more tailor-made kits than any other manufacturer in the industry to meet your specific installation needs. This kit uses high-quality Koyo/Timken bearings and races along with high quality seals and small parts. Yukon Master Overhaul Kits are the most comprehensive and complete kits on the market because Yukon does extensive research to ensure that every kit has everything you need for your application.
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National – National Bearing Race, HM88510 (Part No.HM88510)

National Bearing Race, HM88510

from

$11.99
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
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Motive Gear – Motive Gear Differential Carrier Shim Kit, 1101 (Part No.1101)

Motive Gear Differential Carrier Shim Kit, 1101

from

$8.99
High-quality Differential Carrier Shim Kit
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Motive Gear – Motive Gear Differential Mini Spool, MS12C (Part No.MS12C)

Motive Gear Differential Mini Spool, MS12C

from

$108.99
Motive Gear Differential Mini Spool, MS12C.
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National – National Tapered Roller Bearing Cone, LM603049 (Part No.LM603049)

National Tapered Roller Bearing Cone, LM603049

from

$12.49
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
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National – National Multi-Purpose Bearing, KD-11786-Y (Part No.KD-11786-Y)

National Multi-Purpose Bearing, KD-11786-Y

from

$81.49
Manufactured with premium-grade steel, National taper bearing sets feature crowned raceways and rollers to ensure even load distribution.
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Powertrax – Powertrax Differential Lock Assembly, 9207883005 (Part No.9207883005)

Powertrax Differential Lock Assembly, 9207883005

from

$551.99
For vehicles that are driven daily, the Power Trax 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 Power Trax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Power Trax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Power Trax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds.
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National – National Shaft Repair Sleeve, 99170 (Part No.99170)

National Shaft Repair Sleeve, 99170

from

$47.49
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.
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Motive Gear – Motive Gear Differential Ring and Pinion, GM12-373A (Part No.GM12-373A)

Motive Gear Differential Ring and Pinion, GM12-373A

from

$179.99
Motive Gear Differential Ring and Pinion, GM12-373A.
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Richmond Gear – Richmond Gear Differential Ring And Pinion, 69-0298-1 (Part No.69-0298-1)

Richmond Gear Differential Ring And Pinion, 69-0298-1

from

$360.99
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!
See More

Driveworks – Driveworks Oil Seal, S-8460N (Part No.S-8460N)

Driveworks Oil Seal, S-8460N

from

$8.99
Value-priced seal meets all cataloged application requirements.
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National – National Multi-Purpose Seal, 6818 (Part No.6818)

National Multi-Purpose Seal, 6818

from

$17.49
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.
See More

Motive Gear – Motive Gear Differential Crush Sleeve, 3954482 (Part No.3954482)

Motive Gear Differential Crush Sleeve, 3954482

from

$5.99
Motive Gear Differential Crush Sleeve, 3954482.
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Motive Gear – Motive Gear Differential Gear Install Kit, GM12IK (Part No.GM12IK)

Motive Gear Differential Gear Install Kit, GM12IK

from

$69.99
Motive Gear Differential Gear Install Kit, GM12IK.
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Felpro – Felpro Axle Housing Cover Gasket Irregular Shaped 12 Bolt Hole Gasket, RDS 13391 (Part No.RDS 13391)

Felpro Axle Housing Cover Gasket Irregular Shaped 12 Bolt Hole Gasket, RDS 13391

from

$9.49
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
See More

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

Felpro Differential Carrier Gasket Round Shaped 10 Bolt Hole Gasket, RDS 5090

from

$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.
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Valvoline – Valvoline Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid 1 GA, 904891 (Part No.904891)

Valvoline Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid 1 GA, 904891

from

$35.99
Choosing an automatic transmission fluid just got easier. Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the #1 ATF product, is suitable for use in 95% of ATF vehicles in operation with US registered light duty applications. And now, it€™s also recommended for most belt and 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 and tear, and maximize performance €“ all for much longer than conventional fluids. It has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Whether your vehicle has a CVT or traditional automatic, Valvoline MaxLife Multi-Vehicle ATF is suitable for a broad range of transmissions including Ford, GM, Toyota, Honda, Nissan, Hyundai, Subaru, BMW, Mercedes, Volvo, VW and Audi vehicles. It€™s specifically recommended for use in the following applications: 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. For the many miles ahead, trust your transmission with Valvoline, the #1 automatic transmission fluid brand.
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Yukon Gear – Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002 (Part No.15002)

Yukon Gear 3 Qt - Penzoil 80W90 Conventional Gear Oil, 15002

from

$44.99
Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.
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Most Popular Rear Differential Cover Gasket for 1966 Chevrolet P20 Series

Enhance your 1966 Chevrolet P20 Series with this popular Rear Differential Cover Gasket we have in stock, for $9.99.

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

Felpro Differential Carrier Gasket Round Shaped 10 Bolt Hole Gasket, RDS 5090

from

$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.
See More

Best-Selling 1966 Chevrolet P20 Series Differential Axle Shaft

Upgrade your P20 Series with our best-selling Differential Axle Shaft.

Richmond Gear – Richmond Gear Differential Pinion Shaft, 80-0269-1 (Part No.80-0269-1)

Richmond Gear Differential Pinion Shaft, 80-0269-1

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.
See More

Top-Quality Differential Pinion Seals for 1966 Chevrolet P20 Series

Choose a high-quality OEM or aftermarket Differential Pinion Seal for Chevrolet P20 Series and enjoy top-notch performance from $8.99.

Driveworks – Driveworks Oil Seal, S-8460N (Part No.S-8460N)

Driveworks Oil Seal, S-8460N

from

$8.99
Value-priced seal meets all cataloged application requirements.
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Top Picks for 1966 Chevrolet P20 Series Differential Oil

Invest in one of our 2 durable Differential Oil for your 1966 Chevrolet, knowing you’re getting trusted brands and expert craftsmanship.

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

Yukon Gear 3 Qt - Penzoil 80W90 Conventional Gear Oil, 15002

from

$44.99
Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.
See More

Valvoline – Valvoline Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid 1 GA, 904891 (Part No.904891)

Valvoline Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid 1 GA, 904891

from

$35.99
Choosing an automatic transmission fluid just got easier. Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the #1 ATF product, is suitable for use in 95% of ATF vehicles in operation with US registered light duty applications. And now, it€™s also recommended for most belt and 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 and tear, and maximize performance €“ all for much longer than conventional fluids. It has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Whether your vehicle has a CVT or traditional automatic, Valvoline MaxLife Multi-Vehicle ATF is suitable for a broad range of transmissions including Ford, GM, Toyota, Honda, Nissan, Hyundai, Subaru, BMW, Mercedes, Volvo, VW and Audi vehicles. It€™s specifically recommended for use in the following applications: 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. For the many miles ahead, trust your transmission with Valvoline, the #1 automatic transmission fluid brand.
See More

Differential Bearings for 1966 Chevrolet P20 Series

Make a smart move for your 1966 Chevrolet P20 Series with products all priced from $13.49 to $81.49.

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

National Multi-Purpose Bearing, KD-11786-Y

from

$81.49
Manufactured with premium-grade steel, National taper bearing sets feature crowned raceways and rollers to ensure even load distribution.
See More

Driveworks – Driveworks Tapered Roller Bearing, S-HM-803110 (Part No.S-HM-803110)

Driveworks Tapered Roller Bearing, S-HM-803110

from

$13.49
Driveworks Tapered Roller Bearing, S-HM-803110.
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Top-Rated Differential Brands For Your 1966 Chevrolet P20 Series

When it comes to finding the perfect Differential for your 1966 Chevrolet P20 Series, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 8 trusted brands. We carry the most popular Differential brands including Richmond Gear, National, and Driveworks, and more, all known for their exceptional customer ratings (average brand rating of 4.4 stars) and competitive prices, as low as $8.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1966 Chevrolet P20 Series, providing peace of mind with parts that meet or exceed OEM standards.

Popular Richmond Gear 1966 Chevrolet P20 Series Differentials

If you’re looking for a top-quality Differential for your 1966 Chevrolet P20 Series, Advance Auto Parts has exactly what you need with our selection of Richmond Gear Differentials. We have 2 Richmond Gear Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $350.99 and an average cost of $355.99, you’ll find the perfect Differential for your needs and budget. Richmond Gear Differentials for the 1966 Chevrolet P20 Series come highly rated, with over 3 customer reviews and an impressive average rating of 4.4 stars. Choosing a Richmond Gear Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Richmond Gear Differential Ring And Pinion, 69-0298-1
from $360.99
(1)
Richmond Gear Differential Ring And Pinion, 69-0298-1
“Best ever!!!’nn”
Richmond Gear Differential Ring And Pinion, 49-0072-1
from $350.99
(2)
Richmond Gear Differential Ring And Pinion, 49-0072-1
“I have a Chevy Impala 07 that runs on 3 cylinders when not needing the power of 6, and the new plugs have significantly provided an inexpensive tuneup”

Top-Quality National 1966 Chevrolet P20 Series Differentials

For those in search of a high-quality Differential for their 1966 Chevrolet P20 Series, Advance Auto Parts offers a great selection of National Differentials. With 1 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 $25.49, giving you a range of options to suit your budget. Backed by over 1 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.
National Tapered Roller Bearing Cone, HM89449
from $25.49
(1)
National Tapered Roller Bearing Cone, HM89449
“This Is The One That Fit My 1971 CHEVY TRUCK 12 BOLT PINION REAR BACK BEARING”

FAQs for 1966 Chevrolet P20 Series Differentials

What are the best-selling Differentials for 1966 Chevrolet P20 Series?

Out of 35 Differentials that fit 1966 Chevrolet P20 Series, the following parts are the top sellers:

What’s the price range for 1966 Chevrolet P20 Series Differentials?

The prices of Differentials for the 1966 Chevrolet P20 Series range from $5.99 up to $551.99 for the most premium parts.

What is the average price of a Differential for a 1966 Chevrolet P20 Series?

The average price for Differentials for the 1966 Chevrolet P20 Series is $145.05. 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 P20 Series model years?

Yes, we carry Differentials for 6 model years of Chevrolet P20 Series between 1960 and 1967. The following model years are the most popular for Differential purchases: 1967, 1965, 1964, 1963, 1962, 1961, and 1960.

What are the cheapest Differentials for my 1966 Chevrolet P20 Series?

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

Yes. We stock Differentials for 22 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 P20 Series?

As of 8/2/26, these are some of the most in-demand types of Differentials for a 1966 Chevrolet P20 Series:

Can I get help with 1966 Chevrolet P20 Series 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 P20 Series Differentials?

Advance Auto Parts keeps returns simple. For new Chevrolet P20 Series Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.