1966 GMC PB1000 Series Differentials

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Keep Your 1966 GMC PB1000 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 GMC PB1000 Series looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Carrier Bearing Set, Differential Oil, and Differential Pinion Seals. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Differentials from Trusted Brands

Looking for a reliable Differential? We’ve got you covered with options from brands you know and trust like Driveworks, Richmond Gear, and National. For example, Driveworks Differentials start at just $8.99 with an average 4.2 star rating. Richmond Gear and National offer similar pricing and quality, backed by strong customer feedback. With over 285 reviews and a solid 4.4 star average, you can shop with confidence knowing other GMC PB1000 Series owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1966 GMC PB1000 Series Differential at Advance Auto Parts is around $118.11, with a range that starts at $5.99 and goes up to $551.99. With 44 options in stock from 7 trusted brands, finding the right fit is easy. Popular picks like Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002, Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6629, and National Differential Pinion Seal, 5778 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 GMC PB1000 Series in peak condition, inside and out.

Essential 1966 GMC PB1000 Series Differentials

Driveworks – Driveworks Oil Seal, S-5778 (Part No.S-5778)

Driveworks Oil Seal, S-5778

from

$13.99
Value-priced seal meets all cataloged application requirements.
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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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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.
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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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Richmond Gear – Richmond Gear Differential Bearing Kit, 83-1018-1 (Part No.83-1018-1)

Richmond Gear Differential Bearing Kit, 83-1018-1

from

$182.99
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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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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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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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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National – National Tapered Roller Bearing Cone, 02872 (Part No.02872)

National Tapered Roller Bearing Cone, 02872

from

$24.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.
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Driveworks – Driveworks Tapered Roller Bearing, S-2872 (Part No.S-2872)

Driveworks Tapered Roller Bearing, S-2872

from

$23.49
Driveworks Tapered Roller Bearing, S-2872.
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Felpro – Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6629 (Part No.RDS 6629)

Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6629

from

$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.
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National – National Bearing Race, 25523 (Part No.25523)

National Bearing Race, 25523

from

$20.29
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
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National – National Tapered Roller Bearing Cone, 25577 (Part No.25577)

National Tapered Roller Bearing Cone, 25577

from

$33.49
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 Taper Bearing Cup, 31520 (Part No.31520)

National Taper Bearing Cup, 31520

from

$13.79
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
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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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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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Driveworks – Driveworks Taper Bearing Set, S-A-5 (Part No.S-A-5)

Driveworks Taper Bearing Set, S-A-5

from

$11.99
Value-priced bearing meets all cataloged application requirements.
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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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National – National Shaft Repair Sleeve, 99155 (Part No.99155)

National Shaft Repair Sleeve, 99155

from

$39.49
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, GM12-342 (Part No.GM12-342)

Motive Gear Differential Ring and Pinion, GM12-342

from

$205.99
Motive Gear Differential Ring and Pinion, GM12-342.
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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 Gear Install Kit, 83-1018-B (Part No.83-1018-B)

Richmond Gear Differential Gear Install Kit, 83-1018-B

from

$39.49
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

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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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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Most Popular Differential Carrier Bearing Set for 1966 GMC PB1000 Series

Enhance your 1966 GMC PB1000 Series with this popular Differential Carrier Bearing Set we have in stock, for $11.99.

Driveworks – Driveworks Taper Bearing Set, S-A-5 (Part No.S-A-5)

Driveworks Taper Bearing Set, S-A-5

from

$11.99
Value-priced bearing meets all cataloged application requirements.
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Best-Selling 1966 GMC PB1000 Series Differential Oil

Upgrade your PB1000 Series with our best-selling Differential Oil.

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

Top-Quality Differential Pinion Seals for 1966 GMC PB1000 Series

Choose a high-quality OEM or aftermarket Differential Pinion Seal for GMC PB1000 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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National – National Differential Pinion Seal, 5778 (Part No.5778)

National Differential Pinion Seal, 5778

from

$23.79
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

Driveworks – Driveworks Oil Seal, S-5778 (Part No.S-5778)

Driveworks Oil Seal, S-5778

from

$13.99
Value-priced seal meets all cataloged application requirements.
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Driveworks – Driveworks Oil Seal, S-6818 (Part No.S-6818)

Driveworks Oil Seal, S-6818

from

$12.79
Driveworks Oil Seal, S-6818. BEARINGS, SEALS, HUB ASSEMBLIES>BEARINGS & SEALS>SEALS>ECONOMY SEALS from Driveworks
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Our Top Pick for a 1966 GMC PB1000 Series Differential Bearing

Invest in a durable Differential Bearing for your 1966 GMC, knowing you’re getting trusted brands and expert craftsmanship.

National – National Bearing Race, 25523 (Part No.25523)

National Bearing Race, 25523

from

$20.29
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
See More

Our Top-Rated Rear Housing Cover Gaskets for 1966 GMC PB1000 Series

Make a smart move for your 1966 GMC PB1000 Series with our Rear Housing Cover Gasket for $7.99.

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

Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 6629

from

$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.
See More

Top-Rated Differential Brands For Your 1966 GMC PB1000 Series

When it comes to finding the perfect Differential for your 1966 GMC PB1000 Series, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 7 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 GMC PB1000 Series, providing peace of mind with parts that meet or exceed OEM standards.

Popular Richmond Gear 1966 GMC PB1000 Series Differentials

If you’re looking for a top-quality Differential for your 1966 GMC PB1000 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 GMC PB1000 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, 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”
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”

Top-Quality National 1966 GMC PB1000 Series Differentials

For those in search of a high-quality Differential for their 1966 GMC PB1000 Series, Advance Auto Parts offers a great selection of National Differentials. With 2 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 $23.79, with an average price of $24.64, giving you a range of options to suit your budget. Backed by over 5 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”
National Differential Pinion Seal, 5778
from $23.79
(4)
National Differential Pinion Seal, 5778
“Works well fit right in. Love national seals”

FAQs for 1966 GMC PB1000 Series Differentials

What are the best-selling Differentials for 1966 GMC PB1000 Series?

Out of 44 Differentials that fit 1966 GMC PB1000 Series, the following parts are the top sellers:

What’s the price range for 1966 GMC PB1000 Series Differentials?

The prices of Differentials for the 1966 GMC PB1000 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 GMC PB1000 Series?

The average price for Differentials for the 1966 GMC PB1000 Series is $118.11. 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 GMC PB1000 Series model years?

Yes, we carry Differentials for 4 model years of GMC PB1000 Series between 1961 and 1965. The following model years are the most popular for Differential purchases: 1965, 1964, 1963, 1962, and 1961.

What are the cheapest Differentials for my 1966 GMC PB1000 Series?

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

Yes. We stock Differentials for 19 other popular 1966 GMC models. Some of the most popular are 1966 K15/K1500 Pickup Differentials, 1966 Suburban Differentials, 1966 G1000 Series Differentials, 1966 I1500 Differentials, and 1966 PB15 Series Differentials.

What types of Differentials do you sell for my 1966 GMC PB1000 Series?

As of 8/2/26, these are some of the most in-demand types of Differentials for a 1966 GMC PB1000 Series:

Can I get help with 1966 GMC PB1000 Series Differential orders?

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

What is your return policy for GMC PB1000 Series Differentials?

Advance Auto Parts keeps returns simple. For new GMC PB1000 Series Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.