1966 Jeep CJ6 Differentials

Keep Your 1966 Jeep CJ6 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 CJ6 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Bearings, Differential Oil, and Differential Covers. 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, Powertrax, and Omix. For example, National Differentials start at just $10.99 with an average 4.3 star rating. Powertrax and Omix offer similar pricing and quality, backed by strong customer feedback. With over 18 reviews and a solid 4 star average, you can shop with confidence knowing other Jeep CJ6 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1966 Jeep CJ6 Differential at Advance Auto Parts is around $221.26, with a range that starts at $2.99 and goes up to $1,337.99. With 209 options in stock from 11 trusted brands, finding the right fit is easy. Popular picks like Replacement Ring Gear Bolt For Model 35, Dana 25, 27, 30 & 44 – 3/8" X 24, Dana 25, 27, 30, 44, Model 20 And Model 35, GM 7.5", 8.2", 8.5", 12P, 12T, C9.25 Rear Cover Bolt, and Replacement Cover Gasket For Dana 30 start at just $9.99 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 CJ6 in peak condition, inside and out.

Essential 1966 Jeep CJ6 Differentials

Yukon Gear – Dana 44 And Chrysler 9.25" Traclloc Clutch Kit Replacement (Part No.16153)

Dana 44 And Chrysler 9.25" Traclloc Clutch Kit Replacement

from

$139.99
Dana 44 & 9.25 Chrysler TracLoc clutch kit.

Product Features:
  • Clutch kit
  • Fits Dana Spicer 44 and Chrysler 9.25″ Trac Loc positraction
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Yukon Gear – Replacement Floater Roll Pin For Dana 44 & 8.75" Chrysler Power Lok (Part No.33326)

Replacement Floater Roll Pin For Dana 44 & 8.75" Chrysler Power Lok

from

$5.99
Product Features:
  • Floater roll pin
  • Fits Dana Spicer 44 and Chrysler 8.75″
  • Powr Lok positraction only
See More

USA Standard Gear – Spartan Locker for Dana 44 Differential with 30 Spline Axles, Includes Heavy-duty Cross Pin Shaft (Part No.17001)

Spartan Locker for Dana 44 Differential with 30 Spline Axles, Includes Heavy-duty Cross Pin Shaft

from

$669.99
The Spartan Locker, by USA Standard Gear, provides reliable traction at a low cost. Give your vehicle great traction and save some cash. Choose a Spartan Locker for better traction. The Spartan locker by USA standard gear is a mechanical locker that replaces the spiders in a standard case. The Spartan locker’s design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap! The couplers and drivers are made from 9310 steel, for added strength. Each Spartan locker carries a one year warranty against defect.

Product Features:
  • Fits Dana Spicer 44 with 30 spline axles
  • Made from 9310 steel for added strength
  • Replaces the spiders in a standard carrier case
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Yukon Gear – Dana 30 Side Gear Thrust Washer (Part No.33284)

Dana 30 Side Gear Thrust Washer

from

$10.99
Dana 25, Dana 27, & Dana 30 side gear Thrust washer.

Product Features:
  • Side gear thrust washer for Dana Spicer 25, 27, 30 and AMC Model 35
  • 1.560″ I.D.
  • Fits standard open differentials only
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Yukon Gear – Dana 25 / 27 / 30 / 36 / 44 / 53 Pinion Nut Washer Replacement (Part No.33163)

Dana 25 / 27 / 30 / 36 / 44 / 53 Pinion Nut Washer Replacement

from

$3.99
Replacement pinion nut washer for Dana 25, 27, 30, 36, 44 & 53.

Product Features:
  • Pinion nut washer for Dana Spicer 25, 27, 30, 44 and 50
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Yukon Gear – Replacement Chrome Cover For Dana 44 (Part No.32004)

Replacement Chrome Cover For Dana 44

from

$67.99
0.080″ thick Chrome replacement cover for Dana 44.

Product Features:
  • Fits standard rotation Dana Spicer 44
  • Chrome
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Yukon Gear – Dana 44 Carrier Installation Kit Replacement (Part No.57003)

Dana 44 Carrier Installation Kit Replacement

from

$128.99
Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for Dana 44 differential. This kit contains carrier bearings, races and shims.

Product Features:
  • Fits Dana Spicer 44
  • Includes carrier bearings and races and carrier shim kit
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Yukon Gear – Grizzly Locker, Dana 30, 30 Spline, 3.73 & Up (Part No.28029)

Grizzly Locker, Dana 30, 30 Spline, 3.73 & Up

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$941.99
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 30 with 30 spline axles
  • 3.73 and up ratio only
  • Patented internal design reduces common locker failures
  • 8620 internals for added strength
  • Assembled in the USA
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FAG US – Cup (Part No.LM501310)

Cup

from

$9.99
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
See More

Omix – Axle Shaft Assembly; LH; for Dana 25; 41-71 Willys/Jeep Models (Part No.16523.01)

Axle Shaft Assembly; LH; for Dana 25; 41-71 Willys/Jeep Models

from

$377.99
Has your front axle shaft or U-joint failed? Omix-ADA offers complete front Jeep axle shaft assemblies providing everything you need for a simple installation. Slide the old parts out and slide the new parts in. You’ll be back on the road in no time.

Product Features:
  • Front Left Driver Side
  • OE Style
  • Direct Fit
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Omix – Differential Cover Gasket; for Dana 25/27/30 (Part No.16502.01)

Differential Cover Gasket; for Dana 25/27/30

from

$6.49
Is your Jeep differential cover leaking? Do you need to seal it up after some work? Omix-ADA has the OE quality differential gaskets you need.

Product Features:
  • Rubber
  • Sold Individually
  • OE Style
  • Direct Fit
See More

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

Differential Cross Shaft

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!

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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USA Standard Gear – Replacement Ring & Pinion Gear Set For Dana 44 In A 3.08 Ratio (Part No.36038)

Replacement Ring & Pinion Gear Set For Dana 44 In A 3.08 Ratio

from

$287.99
USA Standard ring & pinion sets are the right choice to add confidence to your install. USA Standard Gear offers a full line of ring & pinion sets for a variety of common & hard to find applications. USA standard gear offers a standard one year warranty against defects on their ring & pinion sets.

Product Features:
  • Fits standard rotation Dana Spicer 44
  • 8.50″ ring gear diameter
  • 26 spline pinion
  • 10 ring gear bolts
  • 3.08 ratio
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Yukon Gear – Replacement Trail Repair Kit For Dana 30 And 44 With 1310 Size U/Joint And Straps (Part No.32278)

Replacement Trail Repair Kit For Dana 30 And 44 With 1310 Size U/Joint And Straps

from

$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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Yukon Gear – Dana 44 Standard Open Spider Gear Kit Replacement (Part No.16077)

Dana 44 Standard Open Spider Gear Kit Replacement

from

$218.99
Yukon standard open spider gear replacement kit for Dana 44 with 30 spline axles (all are without c-cup, including IFS). Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. All components come with a one year warranty against manufacturing defects.

Product Features:
  • Spider gear kit
  • Fit Dana Spicer 44 open differential with 30 spline axles
  • Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.
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Yukon Gear – Replacement Oil Baffle For Model 35 IFS Front, Dana 25, 27, 30, 44 IFS & Disconnect And Dana 50 (Part No.33002)

Replacement Oil Baffle For Model 35 IFS Front, Dana 25, 27, 30, 44 IFS & Disconnect And Dana 50

from

$4.99
Product Features:
  • Oil baffle for Dana Spicer 30, Dana Spicer 44 IFS, Dana Spicer 50, AMC Model 35 IFS
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Omix – Plug; Differential Cover; Dana 30; 92-06 XJ/TJ/ZJ (Part No.16595.95)

Plug; Differential Cover; Dana 30; 92-06 XJ/TJ/ZJ

from

$11.79
Direct OE replacement Jeep parts and accessories built to the original specifications by Omix-ADA.

Product Features:
  • Metal
  • OE Style
  • Direct Fit
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Yukon Gear – Zip Locker For Dana 44 With 30 Spline Axles, 3.73 & Down (Part No.34018)

Zip Locker For Dana 44 With 30 Spline Axles, 3.73 & Down

from

$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
See More

Motive Gear – Differential Ring and Pinion (Part No.D30-373)

Differential Ring and Pinion

from

$197.99


Product Features:
  • DANA-30 R&P 3:73 RATIO (STD. CUT)
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National – Bearing Race (Part No.02820)

Bearing Race

from

$12.29
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:
  • Premium bearing design matches OEM specifications
  • Precision manufactured using premium-grade steel for outstanding durability and performance
  • Crowned raceways and rollers to ensure even load distribution for maximum life
  • Industry leading coverage
  • Professional technicians know they can depend on National
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Yukon Gear – Powr Lok Button Kit For Dana 30, Dana 44 & Chrysler 8.75" (Part No.33536)

Powr Lok Button Kit For Dana 30, Dana 44 & Chrysler 8.75"

from

$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″
See More

Omix – Drive Shaft Pinion Yoke (Part No.16580.01)

Drive Shaft Pinion Yoke

from

$101.99
Direct OE replacement Jeep parts and accessories built to the original specifications by Omix-ADA. Limited five year Manufacturer’s warranty.

Product Features:
  • OE Style
  • Direct Fit
  • Front Or Rear
  • U-bolt Style
See More

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

Dana 30 / 44 Roll Pin Replacement

from

$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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Omix – Pinion Oil Seal ; 45-93 Willys/Jeep Models (Part No.16521.01)

Pinion Oil Seal ; 45-93 Willys/Jeep Models

from

$6.49
Do you have a gear oil leak around your differential pinion? Worried you could run low on gear oil and ruin the differential? Omix-ADA offers high-quality replacement pinion seals to keep the gear lube inside the differential where it belongs.

Product Features:
  • Steel With Rubber Inner
  • OE Style
  • Direct Fit
See More

Yukon Gear – Zip Locker Install Kit (Part No.34026)

Zip Locker Install Kit

from

$249.99
Product Features:
  • Installation kit
  • Includes o-ring for bulkhead fitting, bulkhead fitting, outer fitting, switch, front and rear switch cover, solenoid, zip ties and 20′ air line
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Yukon Gear – Replacement Carrier Shim Kit For Dana 30 & 44 With 19 Spline Axles (Part No.55018)

Replacement Carrier Shim Kit For Dana 30 & 44 With 19 Spline Axles

from

$30.99
Product Features:
  • Carrier shim kit for Dana Spicer 30 and Dana Spicer 44 with 19 spline axles
See More

Powertrax – Lock Right Locker (Part No.2210-LR)

Lock Right Locker

from

$350.99
The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! 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!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
  • Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
  • Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.
  • Powertrax® = Extreme Traction Systems!
  • See More

    FAG US – Shaft Seal (Part No.SS2633)

    Shaft Seal

    from

    $28.99
    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.

    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
    See More

    Most Popular Differential Bearings for 1966 Jeep CJ6s

    Enhance your 1966 Jeep CJ6 with one of the 4 Differential Bearings we have in stock, starting at just $8.49.

    National – Tapered Roller Bearing Cone (Part No.LM501349)

    Tapered Roller Bearing Cone

    from

    $19.99
    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
    See More

    National – Bearing Race (Part No.LM501310)

    Bearing Race

    from

    $8.49
    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
    See More

    FAG US – Cone (Part No.KM86649)

    Cone

    from

    $24.29
    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
    See More

    National – Bearing Race (Part No.24721)

    Bearing Race

    from

    $21.79
    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
    See More

    Best-Selling 1966 Jeep CJ6 Differential Oil

    Upgrade your CJ6 with one of our 3 best-selling Differential Oil.

    Yukon Gear – Redline Synthetic "Shock Proof" Oil With Positraction Additive – 4 Quarts (Part No.15005)

    Redline Synthetic "Shock Proof" Oil With Positraction Additive - 4 Quarts

    from

    $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
    See More

    Yukon Gear – Redline Synthetic "Shock Proof" Oil – 3 Quarts (Part No.15000)

    Redline Synthetic "Shock Proof" Oil - 3 Quarts

    from

    $99.99
    Redline Synthetic “Shock Proof” Oil. 3 Quarts.

    Product Features:
    • Includes three quarts of Redline Shockproof oil
    See More

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

    Redline Synthetic "Shock Proof" Oil - 4 Quarts

    from

    $137.99
    Redline Synthetic “Shock Proof” Oil. 4 Quarts.

    Product Features:
    • Includes four quarts of Redline Shockproof oil
    See More

    Top-Quality Differential Covers for 1966 Jeep CJ6s

    Choose a high-quality OEM or aftermarket Differential Cover for Jeep CJ6s and enjoy top-notch performance from $52.99.

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

    Replacement Chrome Cover For Dana 44

    from

    $67.99
    0.080″ thick Chrome replacement cover for Dana 44.

    Product Features:
    • Fits standard rotation Dana Spicer 44
    • Chrome
    See More

    Yukon Gear – Replacement Chrome Cover For Dana 30 Standard Rotation (Part No.32003)

    Replacement Chrome Cover For Dana 30 Standard Rotation

    from

    $52.99
    Product Features:
    • Fits standard rotation Dana Spicer 30
    • Chrome
    See More

    Yukon Gear – Steel Cover For Dana 44 Standard Rotation (Part No.32319)

    Steel Cover For Dana 44 Standard Rotation

    from

    $129.99
    Product Features:
    • Fits standard rotation Dana Spicer 44
    • Steel
    See More

    Yukon Gear – Aluminum Girdle Replacement Cover For Dana 44 Ta HD (Part No.32110)

    Aluminum Girdle Replacement Cover For Dana 44 Ta HD

    from

    $359.99
    Aluminum Girdle replacement cover for Dana 44 TA HD.

    Product Features:
    • Fits standard rotation Dana Spicer 44
    • Aluminum girdle cover
    See More

    Yukon Gear – Differential (Part No.29101)

    Differential

    from

    $271.99
    Differential

    Top Picks for 1966 Jeep CJ6 Rear Differential Cover Gaskets

    Invest in one of our 5 durable Rear Differential Cover Gaskets for your 1966 Jeep, knowing you’re getting trusted brands and expert craftsmanship.

    Omix – Differential Cover Gasket; for Dana 25/27/30 (Part No.16502.01)

    Differential Cover Gasket; for Dana 25/27/30

    from

    $6.49
    Is your Jeep differential cover leaking? Do you need to seal it up after some work? Omix-ADA has the OE quality differential gaskets you need.

    Product Features:
    • Rubber
    • Sold Individually
    • OE Style
    • Direct Fit
    See More

    Yukon Gear – Replacement Cover Gasket For Dana 30 (Part No.23003)

    Replacement Cover Gasket For Dana 30

    from

    $12.99
    Product Features:
    • Cover gasket
    • Fits Dana Spicer 30
    See More

    Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 55015)

    Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket

    from

    $11.49
    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.

    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
    See More

    Omix – Differential Cover Gasket (Part No.16502.02)

    Differential Cover Gasket

    from

    $7.29
    Is your Jeep differential cover leaking? Do you need to seal it up after some work? Omix-ADA has the OE quality differential gaskets you need.

    Product Features:
    • Rubber
    • Sold Individually
    • OE Style
    • Direct Fit
    • Limited 5 Year Warranty
    See More

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

    Dana 44 Cover Gasket Replacement

    from

    $12.99
    Product Features:
    • Cover gasket
    • Fits Dana Spicer 44
    See More

    Differential Pinion Seals for 1966 Jeep CJ6s

    Make a smart move for your 1966 Jeep CJ6 with products all priced from $6.49 to $69.99.

    Yukon Gear – Dana 25 / 27 / 30 / 36 / 44 / 50 Pinion Seal Replacement (Part No.30128)

    Dana 25 / 27 / 30 / 36 / 44 / 50 Pinion Seal Replacement

    from

    $17.99
    Replacement pinion seal for Dana 25, Dana 27, Dana 30, D36, Dana 44, & Dana 50 .Yukon Mighty seal.

    Product Features:
    • Pinion seal
    • Fits Dana Spicer 25, 27, 30, 40 and 50
    See More

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

    Multi-Purpose Seal

    from

    $69.99
    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:
    • 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
    See More

    Motive Gear – Differential Pinion Seal (Part No.5778V)

    Differential Pinion Seal

    from

    $18.49
    All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs – the same quality and selection demanded by DIY customers and top mechanics. With four warehouses strategically located across North America, most Motive Gear orders arrive within 2-4 days. Win with Motive Gear!
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    Crown Auto Jeep Replacmnt – For Use With Model 25 Front/ Model 27 Front/ Model 30 Front/ Model 41 Rear, Zinc (Part No.639265)

    For Use With Model 25 Front/ Model 27 Front/ Model 30 Front/ Model 41 Rear, Zinc

    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.

    Product Features:
    • Long-Lasting, Durable Crown Automotive Products
    • Hazardous Free Material
    • Offers OE Fit And Function
    • Crown Automotive Has Consistently Maintained Its Commitment To Offering Only Quality Parts
    See More

    Crown Auto Jeep Replacmnt – For Use With Model 25 Front/ Model 27 Front/ Model 30 Front, Steel/Rubber (Part No.J0998092)

    For Use With Model 25 Front/ Model 27 Front/ Model 30 Front, Steel/Rubber

    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.

    Product Features:
    • Long-Lasting, Durable Crown Automotive Products
    • Hazardous Free Material
    • Offers OE Fit And Function
    • Crown Automotive Has Consistently Maintained Its Commitment To Offering Only Quality Parts
    See More

    Omix – Pinion Oil Seal ; 45-93 Willys/Jeep Models (Part No.16521.01)

    Pinion Oil Seal ; 45-93 Willys/Jeep Models

    from

    $6.49
    Do you have a gear oil leak around your differential pinion? Worried you could run low on gear oil and ruin the differential? Omix-ADA offers high-quality replacement pinion seals to keep the gear lube inside the differential where it belongs.

    Product Features:
    • Steel With Rubber Inner
    • OE Style
    • Direct Fit
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    Top-Rated Differential Brands For Your 1966 Jeep CJ6

    When it comes to finding the perfect Differential for your 1966 Jeep CJ6, 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 Powertrax, National, and Omix, and more, all known for their exceptional customer ratings (average brand rating of 4.7 stars) and competitive prices, as low as $6.49. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1966 Jeep CJ6, providing peace of mind with parts that meet or exceed OEM standards.

    Popular Powertrax 1966 Jeep CJ6 Differentials

    If you’re looking for a top-quality Differential for your 1966 Jeep CJ6, Advance Auto Parts has exactly what you need with our selection of Powertrax Differentials. We have 1 Powertrax Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $350.99, you’ll find the perfect Differential for your needs and budget. Powertrax Differentials for the 1966 Jeep CJ6 come highly rated, with over 1 customer reviews and an impressive average rating of 4.7 stars. Choosing a Powertrax Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
    Lock Right Locker
    from $350.99
    (1)
    Lock Right Locker
    “The fastest mail order i have received.”

    Top-Quality National 1966 Jeep CJ6 Differentials

    For those in search of a high-quality Differential for their 1966 Jeep CJ6, 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 $10.99, 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.
    Bearing Race
    from $10.99
    (1)
    Bearing Race
    “Excellent quality and condition”

    FAQs for 1966 Jeep CJ6 Differentials

    What are the best-selling Differentials for 1966 Jeep CJ6s?

    Out of 209 Differentials that fit 1966 Jeep CJ6s, the following parts are the top sellers:

    What’s the price range for 1966 Jeep CJ6 Differentials?

    The prices of Differentials for the 1966 Jeep CJ6 range from $2.99 up to $1,337.99 for the most premium parts.

    What is the average price of a Differential for a 1966 Jeep CJ6?

    The average price for Differentials for the 1966 Jeep CJ6 is $221.26. 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 Jeep CJ6 model years?

    Yes, we carry Differentials for 15 model years of Jeep CJ6s between 1959 and 1975. The following model years are the most popular for Differential purchases: 1975, 1974, 1973, 1972, 1971, 1970, 1969, 1968, and 1967.

    What are the cheapest Differentials for my 1966 Jeep CJ6?

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

    Yes. We stock Differentials for 27 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 are the top-rated Differentials that fit the 1966 Jeep CJ6?

    The one 1966 Jeep CJ6 Differential we have in stock is the Dana 30 Axle/ Dana 35 Axle/ Dana 44 Axle, 3/8" L, Hex Head, Steel, Single. It costs $2.99.

    What types of Differentials do you sell for my 1966 Jeep CJ6?

    As of 11/2/25, these are some of the most in-demand types of Differentials for a 1966 Jeep CJ6:

    Can I get help with 1966 Jeep CJ6 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 CJ6 Differentials?

    Advance Auto Parts keeps returns simple. For new Jeep CJ6 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.