1966 Oldsmobile Dynamic Differentials

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Keep Your 1966 Oldsmobile Dynamic in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1966 Oldsmobile Dynamic 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 Carrier Bearing Set, and Differential Ring Gear Bolts. 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, National, and Felpro. For example, Driveworks Differentials start at just $10.79 with an average 4.2 star rating. National and Felpro offer similar pricing and quality, backed by strong customer feedback. With over 538 reviews and a solid 4.6 star average, you can shop with confidence knowing other Oldsmobile Dynamic owners approve.

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 Transfer Cases. At Advance Auto Parts, we’re here to help you keep your 1966 Oldsmobile Dynamic in peak condition, inside and out.

Essential 1966 Oldsmobile Dynamic Differentials

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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Powertrax – Powertrax Differential Lock Assembly, 9207853005 (Part No.9207853005)

Powertrax Differential Lock Assembly, 9207853005

from

$544.99
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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Felpro – Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1 (Part No.RDS 55028-1)

Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1

from

$11.99
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

Powertrax – Powertrax Differential Lock Assembly, 1921-LR (Part No.1921-LR)

Powertrax Differential Lock Assembly, 1921-LR

from

$368.99
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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Motive Gear – Motive Gear Ring Gear Bolt, 14066913 (Part No.14066913)

Motive Gear Ring Gear Bolt, 14066913

from

$2.99
Motive Gear Ring Gear Bolt, 14066913.
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ARP Auto Racing – "ARP Auto Racing For Use With General Motors, 0.800""Head L, 3/8"" – 24 Thread Size, Chrome Moly, 230-3001" (Part No.230-3001)

"ARP Auto Racing For Use With General Motors, 0.800""Head L, 3/8"" - 24 Thread Size, Chrome Moly, 230-3001"

from

$47.99
The tremendous shock loads generated at launch by most any drag racing vehicle equipped with todays sticky tire compounds or the acceleration and deceleration of oval track cars put considerable strain on the ring gear. For this reason, the fastener experts at ARP have developed the Pro Series ring gear bolts. They are forged from premium grade 8740 chrome moly steel and are heat treated to a nominal rating of 200,000 PSI tensile strength. Specially hardened, precision ground washers are included where required. Available to fit most any ring gear setup ranging from popular 9 Inch Ford GM 10 and 12 bolt rear ends to the beefy strange differentials found in top fuel and funny car applications.
See More

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

Powertrax Grip LS Traction System, LS201028

from

$463.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!
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Driveworks – Driveworks Oil Seal, S-2043 (Part No.S-2043)

Driveworks Oil Seal, S-2043

from

$10.79
Value-priced seal meets all cataloged application requirements.
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Schaeffler – Schaeffler Shaft Seal, SS2983 (Part No.SS2983)

Schaeffler Shaft Seal, SS2983

from

$9.99
Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.
See More

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 Tapered Roller Bearing Cone, HM88649 (Part No.HM88649)

National Tapered Roller Bearing Cone, HM88649

from

$20.79
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 Tapered Roller Bearing Cone, HM89449 (Part No.HM89449)

National Tapered Roller Bearing Cone, HM89449

from

$25.49
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
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Driveworks – Driveworks Taper Bearing Cone, S-HM-88649 (Part No.S-HM-88649)

Driveworks Taper Bearing Cone, S-HM-88649

from

$19.49
Value-priced bearing meets all cataloged application requirements.
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Driveworks – Driveworks Taper Bearing Cup, S-LM-501314 (Part No.S-LM-501314)

Driveworks Taper Bearing Cup, S-LM-501314

from

$7.99
Value-priced bearing meets all cataloged application requirements.
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National – National Tapered Roller Bearing Cone, HM804846 (Part No.HM804846)

National Tapered Roller Bearing Cone, HM804846

from

$46.49
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
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Schaeffler – Schaeffler Bearing, 6207 (Part No.6207)

Schaeffler Bearing, 6207

from

$13.99
We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.
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Powertrax – Powertrax Differential Lock Assembly, 1940-LR (Part No.1940-LR)

Powertrax Differential Lock Assembly, 1940-LR

from

$441.99
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.
See More

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.
See More

Most Popular Rear Differential Cover Gasket for 1966 Oldsmobile Dynamics

Enhance your 1966 Oldsmobile Dynamic with this popular Rear Differential Cover Gasket we have in stock, for $11.99.

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

Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1

from

$11.99
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

Best-Selling 1966 Oldsmobile Dynamic Differential Carrier Bearing Set

Upgrade your Dynamic with our best-selling Differential Carrier Bearing Set with a 4.5 Starts rating across 70 reviews.

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.
See More

Top-Quality Differential Ring Gear Bolts for 1966 Oldsmobile Dynamics

Choose a high-quality OEM or aftermarket Differential Ring Gear Bolt for Oldsmobile Dynamics and enjoy top-notch performance from $47.99.

ARP Auto Racing – "ARP Auto Racing For Use With General Motors, 0.800""Head L, 3/8"" – 24 Thread Size, Chrome Moly, 230-3001" (Part No.230-3001)

"ARP Auto Racing For Use With General Motors, 0.800""Head L, 3/8"" - 24 Thread Size, Chrome Moly, 230-3001"

from

$47.99
The tremendous shock loads generated at launch by most any drag racing vehicle equipped with todays sticky tire compounds or the acceleration and deceleration of oval track cars put considerable strain on the ring gear. For this reason, the fastener experts at ARP have developed the Pro Series ring gear bolts. They are forged from premium grade 8740 chrome moly steel and are heat treated to a nominal rating of 200,000 PSI tensile strength. Specially hardened, precision ground washers are included where required. Available to fit most any ring gear setup ranging from popular 9 Inch Ford GM 10 and 12 bolt rear ends to the beefy strange differentials found in top fuel and funny car applications.
See More

Our Top Pick for a 1966 Oldsmobile Dynamic Differential Oil

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

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

Top-Rated Differential Pinion Seals for 1966 Oldsmobile Dynamics

Make a smart move for your 1966 Oldsmobile Dynamic with products all priced from $9.99 to $10.79.

Driveworks – Driveworks Oil Seal, S-2043 (Part No.S-2043)

Driveworks Oil Seal, S-2043

from

$10.79
Value-priced seal meets all cataloged application requirements.
See More

Schaeffler – Schaeffler Shaft Seal, SS2983 (Part No.SS2983)

Schaeffler Shaft Seal, SS2983

from

$9.99
Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.
See More

Top-Rated Differential Brands For Your 1966 Oldsmobile Dynamic

When it comes to finding the perfect Differential for your 1966 Oldsmobile Dynamic, 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 Felpro, National, and Driveworks, and more, all known for their exceptional customer ratings (average brand rating of 4.6 stars) and competitive prices, as low as $10.79. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1966 Oldsmobile Dynamic, providing peace of mind with parts that meet or exceed OEM standards.

Popular Felpro 1966 Oldsmobile Dynamic Differentials

If you’re looking for a top-quality Differential for your 1966 Oldsmobile Dynamic, Advance Auto Parts has exactly what you need with our selection of Felpro Differentials. We have 1 Felpro Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $11.99, you’ll find the perfect Differential for your needs and budget. Felpro Differentials for the 1966 Oldsmobile Dynamic come highly rated, with over 195 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.
Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1
from $11.99
(195)
Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1
“Product easy to put on and easy to work with worked great so far”

Top-Quality National 1966 Oldsmobile Dynamic Differentials

For those in search of a high-quality Differential for their 1966 Oldsmobile Dynamic, 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 $11.99, with an average price of $18.74, giving you a range of options to suit your budget. Backed by over 3 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 Bearing Race, LM501314
from $11.99
(2)
National Bearing Race, LM501314
“good quality & price”

FAQs for 1966 Oldsmobile Dynamic Differentials

What are the best-selling Differentials for 1966 Oldsmobile Dynamics?

Out of 15 Differentials that fit 1966 Oldsmobile Dynamics, the following parts are the top sellers:

What’s the price range for 1966 Oldsmobile Dynamic Differentials?

The prices of Differentials for the 1966 Oldsmobile Dynamic range from $7.99 up to $544.99 for the most premium parts.

What is the average price of a Differential for a 1966 Oldsmobile Dynamic?

The average price for Differentials for the 1966 Oldsmobile Dynamic is $134.64. 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 Oldsmobile Dynamic model years?

Yes, we carry Differentials for 7 model years of Oldsmobile Dynamics between 1958 and 1965. The following model years are the most popular for Differential purchases: 1965, 1964, 1963, 1962, 1961, 1960, 1959, and 1958.

What are the cheapest Differentials for my 1966 Oldsmobile Dynamic?

The cheapest 1966 Oldsmobile Dynamic Differentials we carry are:

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

Yes. We stock Differentials for 8 other popular 1966 Oldsmobile models. Some of the most popular are 1966 Cutlass Differentials, 1966 98 Differentials, 1966 Delta 88 Differentials, 1966 Toronado Differentials, and 1966 F85 Differentials.

What types of Differentials do you sell for my 1966 Oldsmobile Dynamic?

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

Can I get help with 1966 Oldsmobile Dynamic Differential orders?

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

What is your return policy for Oldsmobile Dynamic Differentials?

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