1966 Jeep CJ6A Differentials

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Keep Your 1966 Jeep CJ6A in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1966 Jeep CJ6A looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Pinion Seals, Differential Oil, 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, Driveworks, and Motive Gear. For example, National Differentials start at just $23.79 with an average 4.3 star rating. Driveworks and Motive Gear offer similar pricing and quality, backed by strong customer feedback. With over 22 reviews and a solid 3.5 star average, you can shop with confidence knowing other Jeep CJ6A owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1966 Jeep CJ6A Differential at Advance Auto Parts is around $156.27, with a range that starts at $1.15 and goes up to $1,337.99. With 51 options in stock from 11 trusted brands, finding the right fit is easy. Popular picks like Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002, Yukon Gear Replacement Carrier Shim Kit For Dana Spicer 44, 30 Spline Axles, 55010, and National Tapered Roller Bearing Cone, 02872 start at just $15.99 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 4WD Components and Universal Joints. At Advance Auto Parts, we’re here to help you keep your 1966 Jeep CJ6A in peak condition, inside and out.

Essential 1966 Jeep CJ6A Differentials

Motive Gear – Motive Gear Differential Carrier Shim Kit, 1115 (Part No.1115)

Motive Gear Differential Carrier Shim Kit, 1115

from

$18.99
Motive Gear Differential Carrier Shim Kit, 1115.
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Powertrax – Powertrax Differential Lock Assembly, 2115-LR (Part No.2115-LR)

Powertrax Differential Lock Assembly, 2115-LR

from

$425.99
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 Differential Gear Install Kit, D44IK (Part No.D44IK)

Motive Gear Differential Gear Install Kit, D44IK

from

$61.99
Motive Gear Differential Gear Install Kit, D44IK.
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Powertrax – Powertrax Differential Lock Assembly, 2413-LR (Part No.2413-LR)

Powertrax Differential Lock Assembly, 2413-LR

from

$442.99
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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Needa Parts – "Needa Parts Standard Engine Oil Drain Plug: 7/8 "" -16 Thread, 1-1/8 "" Head (Sold by each), 090-018" (Part No.090-018)

"Needa Parts Standard Engine Oil Drain Plug: 7/8 "" -16 Thread, 1-1/8 "" Head (Sold by each), 090-018"

from

$11.49
This engine oil drain plug is designed to match the fit and function of an original equipment plug on specified vehicles. It is engineered to replace a missing or damaged plug and help ensure a secure seal.
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National – National Tapered Roller Bearing Cone, 24780 (Part No.24780)

National Tapered Roller Bearing Cone, 24780

from

$35.49
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
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Crown Auto Jeep Replacmnt – Crown Auto Jeep Replacmnt For Use With Model 25 Front/ Model 27 Front/ Model 30 Front/ Model 41 Rear, Zinc, 639265 (Part No.639265)

Crown Auto Jeep Replacmnt For Use With Model 25 Front/ Model 27 Front/ Model 30 Front/ Model 41 Rear, Zinc, 639265

from

$8.99
Crown Automotive offers the largest line of replacement parts for Jeep (R), as well as a growing line of parts for Chrysler and Dodge vehicles. Our applications features Axle, Body, Brake, Clutch, Cooling, Electrical, Engine, Fuel, Lamps, Mirrors, Steering, Suspension, Transmission and Wiper.
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Driveworks – Driveworks Tapered Roller Bearing, S-2820 (Part No.S-2820)

Driveworks Tapered Roller Bearing, S-2820

from

$18.49
Driveworks Tapered Roller Bearing, S-2820.
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Yukon Gear – Yukon Gear Dura Grip Spider Gear Set for Dana 44 Differential with 30 Spline Axles, 16168 (Part No.16168)

Yukon Gear Dura Grip Spider Gear Set for Dana 44 Differential with 30 Spline Axles, 16168

from

$399.99
Yukon Gear & Axle spider gear kits utilize the highest quality materials and best production techniques in the industry to ensure a longer lasting spider gear set. Kit delivers everything needed for a complete and proper spider gear set replacement.
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Powertrax – Powertrax Differential Lock Assembly, 1710-LR (Part No.1710-LR)

Powertrax Differential Lock Assembly, 1710-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 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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Yukon Gear – Yukon Gear Replacement Carrier Shim Kit For Dana Spicer 44, 30 Spline Axles, 55010 (Part No.55010)

Yukon Gear Replacement Carrier Shim Kit For Dana Spicer 44, 30 Spline Axles, 55010

from

$15.99
Yukon 1541H alloy replacement rear axle for Dana 80, 37 spline (34.0-36.5) Full float axle (8X3.96). Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H alloy rear axles come with a one year warranty against manufacturing defects. This is a full-floating axle.
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Motive Gear – Motive Gear RP DANA 30 3.54 STANDARD MG, D30-354 (Part No.D30-354)

Motive Gear RP DANA 30 3.54 STANDARD MG, D30-354

from

$176.99
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.
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Motive Gear – Motive Gear OEC DANA 30 3.73-UP, D30-CL (Part No.D30-CL)

Motive Gear OEC DANA 30 3.73-UP, D30-CL

from

$83.49
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.
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Motive Gear – Motive Gear Differential Master Bearing Kit – Timken, RA28RMKT (Part No.RA28RMKT)

Motive Gear Differential Master Bearing Kit - Timken, RA28RMKT

from

$149.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv
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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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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 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 Carrier Shim Kit, 1116 (Part No.1116)

Motive Gear Differential Carrier Shim Kit, 1116

from

$18.99
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.
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Motive Gear – Motive Gear Differential Ring and Pinion, D44-538 (Part No.D44-538)

Motive Gear Differential Ring and Pinion, D44-538

from

$227.99
Motive Gear Differential Ring and Pinion, D44-538.
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Yukon Gear – "Yukon Gear Redline Synthetic ""Shock Proof"" Oil – 4 Quarts, 15004" (Part No.15004)

"Yukon Gear Redline Synthetic ""Shock Proof"" Oil - 4 Quarts, 15004"

from

$137.99
Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.
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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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Motive Gear – Motive Gear Differential Crush Sleeve, 1114 (Part No.1114)

Motive Gear Differential Crush Sleeve, 1114

from

$6.99
Motive Gear Differential Crush Sleeve, 1114.
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USA Standard Gear – USA Standard Gear 4340 Axle Kit For ’82-’83 CJ5 & ’82-’86 CJ7, Dana 30, 27 Spline With Super Joints, 35129 (Part No.35129)

USA Standard Gear 4340 Axle Kit For '82-'83 CJ5 & '82-'86 CJ7, Dana 30, 27 Spline With Super Joints, 35129

from

$1337.99
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, pinion nut, 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.
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Richmond Gear – Richmond Gear Differential Pinion Shaft, CSPD44 (Part No.CSPD44)

Richmond Gear Differential Pinion Shaft, CSPD44

from

$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.
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Most Popular Differential Pinion Seals for 1966 Jeep CJ6As

Enhance your 1966 Jeep CJ6A with one of the 4 Differential Pinion Seals we have in stock, starting at just $8.99.

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.
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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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Schaeffler – Schaeffler Shaft Seal, SS2633 (Part No.SS2633)

Schaeffler Shaft Seal, SS2633

from

$18.99
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.
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Crown Auto Jeep Replacmnt – Crown Auto Jeep Replacmnt For Use With Model 25 Front/ Model 27 Front/ Model 30 Front/ Model 41 Rear, Zinc, 639265 (Part No.639265)

Crown Auto Jeep Replacmnt For Use With Model 25 Front/ Model 27 Front/ Model 30 Front/ Model 41 Rear, Zinc, 639265

from

$8.99
Crown Automotive offers the largest line of replacement parts for Jeep (R), as well as a growing line of parts for Chrysler and Dodge vehicles. Our applications features Axle, Body, Brake, Clutch, Cooling, Electrical, Engine, Fuel, Lamps, Mirrors, Steering, Suspension, Transmission and Wiper.
See More

Best-Selling 1966 Jeep CJ6A Differential Oil

Upgrade your CJ6A with one of our 3 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

Yukon Gear – "Yukon Gear Redline Synthetic ""Shock Proof"" Oil – 4 Quarts, 15004" (Part No.15004)

"Yukon Gear Redline Synthetic ""Shock Proof"" Oil - 4 Quarts, 15004"

from

$137.99
Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.
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.
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Top-Quality Differential Axle Shafts for 1966 Jeep CJ6As

Choose a high-quality OEM or aftermarket Differential Axle Shaft for Jeep CJ6As and enjoy top-notch performance from $1,337.99.

USA Standard Gear – USA Standard Gear 4340 Axle Kit For ’82-’83 CJ5 & ’82-’86 CJ7, Dana 30, 27 Spline With Super Joints, 35129 (Part No.35129)

USA Standard Gear 4340 Axle Kit For '82-'83 CJ5 & '82-'86 CJ7, Dana 30, 27 Spline With Super Joints, 35129

from

$1337.99
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, pinion nut, 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.
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Top Picks for 1966 Jeep CJ6A Differential Bearings

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

National – National Tapered Roller Bearing Cone, 24780 (Part No.24780)

National Tapered Roller Bearing Cone, 24780

from

$35.49
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 Bearing Race, 24721 (Part No.24721)

National Bearing Race, 24721

from

$21.99
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
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Our Differential Crush Sleeves for 1966 Jeep CJ6As

Make a smart move for your 1966 Jeep CJ6A with our Differential Crush Sleef for $6.99.

Motive Gear – Motive Gear Differential Crush Sleeve, 1114 (Part No.1114)

Motive Gear Differential Crush Sleeve, 1114

from

$6.99
Motive Gear Differential Crush Sleeve, 1114.
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Top-Rated Differential Brands For Your 1966 Jeep CJ6A

When it comes to finding the perfect Differential for your 1966 Jeep CJ6A, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 11 trusted brands. We carry the most popular Differential brands including National, Driveworks, and Motive Gear, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $13.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1966 Jeep CJ6A, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 1966 Jeep CJ6A Differentials

If you’re looking for a top-quality Differential for your 1966 Jeep CJ6A, Advance Auto Parts has exactly what you need with our selection of National Differentials. We have 2 National Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $23.79 and an average cost of $29.64, you’ll find the perfect Differential for your needs and budget. National Differentials for the 1966 Jeep CJ6A come highly rated, with over 5 customer reviews and an impressive average rating of 4.3 stars. Choosing a National Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
National Tapered Roller Bearing Cone, 24780
from $35.49
(1)
National Tapered Roller Bearing Cone, 24780
“Used in A Bush Hog rotory cutter. Has to be tough.”
National Differential Pinion Seal, 5778
from $23.79
(4)
National Differential Pinion Seal, 5778
“Works well fit right in. Love national seals”

Top-Quality Driveworks 1966 Jeep CJ6A Differentials

For those in search of a high-quality Differential for their 1966 Jeep CJ6A, Advance Auto Parts offers a great selection of Driveworks Differentials. With 1 Driveworks 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 $13.99, giving you a range of options to suit your budget. Backed by over 3 customer ratings and an average rating of 4.2 stars, Driveworks Differentials provide both reliability and excellent performance. Choosing a Driveworks Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Driveworks Oil Seal, S-5778
from $13.99
(3)
Driveworks Oil Seal, S-5778
“Fit the rear Dana 44 on my TJ just fine and stopped the leaking.”

FAQs for 1966 Jeep CJ6A Differentials

What are the best-selling Differentials for 1966 Jeep CJ6As?

Out of 51 Differentials that fit 1966 Jeep CJ6As, the following parts are the top sellers:

What’s the price range for 1966 Jeep CJ6A Differentials?

The prices of Differentials for the 1966 Jeep CJ6A range from $1.15 up to $1,337.99 for the most premium parts.

What is the average price of a Differential for a 1966 Jeep CJ6A?

The average price for Differentials for the 1966 Jeep CJ6A is $156.27. 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.

What are the cheapest Differentials for my 1966 Jeep CJ6A?

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

Yes. We stock Differentials for 26 other popular 1966 Jeep models. Some of the most popular are 1966 Wagoneer Differentials, 1966 CJ5 Differentials, 1966 DJ5 Differentials, 1966 J-2600 Differentials, and 1966 J-2500 Differentials.

What types of Differentials do you sell for my 1966 Jeep CJ6A?

As of 8/2/26, these are some of the most in-demand types of Differentials for a 1966 Jeep CJ6A:

Can I get help with 1966 Jeep CJ6A Differential orders?

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

What is your return policy for Jeep CJ6A Differentials?

Advance Auto Parts keeps returns simple. For new Jeep CJ6A Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.