1981 Ford Thunderbird Differentials

Essential 1981 Ford Thunderbird Differentials

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

Oil Seal

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$10.49
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Yukon Gear – Preload Shim Kit For Chrysler 8.75" & Ford 9" (Part No.55030)

Preload Shim Kit For Chrysler 8.75" & Ford 9"

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$21.99
8.75″ Chrysler & 9″ Ford preload shim kit.

Product Features:
  • Preload shim kit for Ford 9″ and Chrysler 8.75″ with ’41’ and ’42’ case housing
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Powertrax – Lock Right Locker (Part No.1810-LR)

Lock Right Locker

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$339.99
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!
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    National – Bearings (Part No.31520)

    Bearings

    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 – Trac Loc Internals For 8" & 9" Ford, 31 Spline, Includes Hub & Clutches (Part No.16027)

    Trac Loc Internals For 8" & 9" Ford, 31 Spline, Includes Hub & Clutches

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    $487.99
    Yukon Trac Loc internals for 8″ & 9″ Ford, 31 spline, includes hub & clutches. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. This kit does not include clutches. All components come with a one year warranty against manufacturing defects.

    Product Features:
    • Spider gear kit
    • Fits Ford 9″ with Trac Loc positraction with 31 spline axles
    • Includes two side gears, four pinion gears, cross pin shaft, clutch hub, roll pin and spider gear thrust washers.
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    ARP Auto Racing – For Use With Ford 9" Using 5/8"Socket, 0.94"L Under Head, 7/16"-20, 12Point Head (Part No.250-3002)

    For Use With Ford 9" Using 5/8"Socket, 0.94"L Under Head, 7/16"-20, 12Point Head

    from

    $34.99
    The tremendous shock loads generated at launch by most any drag racing vehicle equipped with today 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.

    Product Features:
    • Forged From Premium Grade 8740 Chrome Moly Steel
    • Heat Treated
    • Nominally Rated At 200,000 PSI Tensile Strength
    • Specially Hardened, Precision Ground Washers
    • 0.95″ Underhead Length
    • 200,000 PSI
    • Sold As A Set
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    Richmond Gear – RngPnnInstlKt (Part No.83-1005-1)

    RngPnnInstlKt

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    $191.99
    RngPnnInstlKt

    Yukon Gear – Super Carrier Shim Kit For Ford 7.5", GM 7.5", 8.2" & 8.5" (Part No.55001)

    Super Carrier Shim Kit For Ford 7.5", GM 7.5", 8.2" & 8.5"

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    $59.99
    Product Features:
    • Super carrier shim kit for Ford 7.5″, GM 7.5″, 7.625″, 7.6″ IFS, 7.6″ IRS, 7.75″, 8.2″, 8.2″ Buick, Oldsmobile and Pontiac and GM 8.5″ front and rear
    • Interlocking design makes installation much easier
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    Yukon Gear – Outer Oil Slinger For Ford 7.5", 8.8", 9", 10.25" (Part No.33022)

    Outer Oil Slinger For Ford 7.5", 8.8", 9", 10.25"

    from

    $8.99
    Replacement outer oil slinger for Ford 7.5″, 8.8″, 9″, 10.25″, Nissan Titan rear, Dana 44 Rubicon & 44 JK non-Rubicon.

    Product Features:
    • Outer oil slinger for Ford 10.25″, 7.5″, 8.8″ and 9″ also Jeep JK and Nissan Titan rear
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    Yukon Gear – Pinion Install Kit For Ford Daytona 9" Differential (Part No.13049)

    Pinion Install Kit For Ford Daytona 9" Differential

    from

    $225.99
    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.

    Product Features:
    • Fits Ford 9″ with Daytona pinion support
    • Included are pinion bearings and races, pinion seal, crush sleeve eliminator , complete pinion shim kit, and marking compound with brush.
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    Yukon Gear – Pinion Gear And Thrust Washer (0.750" Shaft) For 8.8" Ford (Part No.33297)

    Pinion Gear And Thrust Washer (0.750" Shaft) For 8.8" Ford

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    $8.99
    Pinion gear thrust washer (0.750″ shaft) for 8.8″ Ford.

    Product Features:
    • Pinion gear thrust washer
    • Fits Ford 8.8″
    • 0.750″ I.D.
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    Driveworks – Tapered Cone/Cup Wheel Bearing Set (Part No.S-A-35)

    Tapered Cone/Cup Wheel Bearing Set

    from

    $13.99
    Value-priced bearing meets all cataloged application requirements.

    Product Features:
    • Brand may vary by location
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    Yukon Gear – Minor Install Kit For Ford 8.8" Differential (Part No.12035)

    Minor Install Kit For Ford 8.8" Differential

    from

    $62.99
    Yukon Minimum installation kits are a low cost solution for gear changes in newer vehicles where the bearings can be reused. This kit uses all high quality components to ensure a smooth set up. kit includes a pinion seal, crush sleeve (if applicable), complete shim kit, marking compound and brush. (Includes Supershims).

    Product Features:
    • Fits Ford 8.8″
    • Included are a pinion seal, crush sleeve , complete shim kit, marking compound and brush.
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    Yukon Gear – Flange Yoke For Ford 7.5" Passenger And Truck (4.3" Od) (Part No.41045)

    Flange Yoke For Ford 7.5" Passenger And Truck (4.3" Od)

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    $314.99
    Yukon flange yoke for Ford 7.5″ passenger and truck (4.3″ OD). All Yukon yokes come with a one year warranty against manufacturing defects.

    Product Features:
    • Fits Ford 7.5″
    • 28 spline
    • Round companion flange
    • 4.3″ O.D.
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    Yukon Gear – 9" Ford Pinion Nut, 35 Spline Large Pinion Oversize (Part No.33161)

    9" Ford Pinion Nut, 35 Spline Large Pinion Oversize

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    $26.99
    9″ Ford pinion nut, 35 spline Large pinion oversize.

    Product Features:
    • Pinion nut
    • Fits Ford 9″ with 35 spline pinion
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    Yukon Gear – Chrome Cover For 8.8" Ford (Part No.32009)

    Chrome Cover For 8.8" Ford

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    $74.99
    Chrome cover for 8.8″ Ford.

    Product Features:
    • Fits Ford 8.8″
    • Chrome
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    Yukon Gear – Bearing Race Driver (Part No.56020)

    Bearing Race Driver

    from

    $215.99
    Bearing race driver. No return.

    Product Features:
    • Bearing race driver
    • Fits M802011 race
    • All steel construction
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    USA Standard Gear – 8.8" Ford Spartan Locker Cross Pin, 31 Spline Only (Part No.17020)

    8.8" Ford Spartan Locker Cross Pin, 31 Spline Only

    from

    $59.99
    Product Features:
    • USA Standard Gear heavy-duty cross pin shaft
    • Fits Ford 8.8″ with 7/8″ cross pin diameter
    • Works with Spartan Locker or standard open spider gears
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    Yukon Gear – 8.5" & 8.2" GM Carrier Installation Kit (Part No.57008)

    8.5" & 8.2" GM Carrier Installation Kit

    from

    $109.99
    Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for GM 8.2″ & 8.5″ differential. This kit contains carrier bearings, races and shims.

    Product Features:
    • Fits GM 7.5″, 7.625″ 8.2″ and 8.5″
    • Includes carrier bearings and races and “super” carrier shim kit
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    Dorman – Rear Axle Shaft, Left or Right (Part No.630-228)

    Rear Axle Shaft, Left or Right

    from

    $242.99
    Axle shaft damaged or bearings worn out? This axle shaft directly replaces the original equipment on certain vehicles, complete with all necessary application-specific installation components.

    Product Features:
    • Direct replacement – this axle shaft replaces the original equipment on specific vehicle years, makes and models
    • Complete kit – each shaft includes critical installation hardware and components needed for specific vehicle applications
    • Durable construction – designed to rigorous standards and tested to ensure performance
    • Trustworthy solution – backed by team of engineers and quality control specialists in the United States
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    Motive Gear – Differential Pinion Solid Spacer Kit w/Shims (Part No.4105)

    Differential Pinion Solid Spacer Kit w/Shims

    from

    $22.79


    Product Features:
    • FORD 9″ SOLID SPACER KIT
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    Yukon Gear – Cover Bolt For Ford 7.5", 8.8" & 9.75" (Part No.33554)

    Cover Bolt For Ford 7.5", 8.8" & 9.75"

    from

    $6.99
    Yukon 1541H alloy replacement rear axle for Dana 60, 70, and 80, 35 spline. (40″ to 43.5″) Full float axle (8×3.96″ ). 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.

    Product Features:
    • 35 spline
    • 8 x 3.96″ bolt pattern
    • Cut to length design fits 40″-43.5″ applications
    • Fits Dana Spicer 60, 70 and 80
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    Motive Gear – Differential Gear Install Kit (Part No.F7.5IK)

    Differential Gear Install Kit

    from

    $35.49


    Product Features:
    • MINI INSTALL KIT FORD 7.5
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    Felpro – Axle Housing Cover Gasket (Part No.RDS 6629)

    Axle Housing Cover Gasket

    from

    $6.49
    Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

    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
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    Valvoline – MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart (Part No.VV324)

    MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart

    from

    $12.79
    Product Features:
    • High-performance seal conditioners maintain and preserve the elasticity of seals to help prevent leaks
    • Long-life friction modifiers and premium base oils help improve smooth shifting, eliminate slippage and shudder, prevent clutch wear and improve drivability longer than conventional fluids
    • Enhanced cleaning additives help reduce varnish formation and keep the transmission running properly longer
    • Engineered with a unique blend of viscosity modifiers and base oils to provide better oil flow at low temperatures and greater film protection at higher temperatures
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    Yukon Gear – Tracloc Clutch Set (Two Sides) For 7.5" Ford (Part No.16013)

    Tracloc Clutch Set (Two Sides) For 7.5" Ford

    from

    $264.99
    TracLoc clutch set (two sides) for 7.5″ Ford.

    Product Features:
    • Clutch kit
    • Fit Ford 7.5″ Trac Loc positraction
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    National – Bearings (Part No.NP559445)

    Bearings

    from

    $59.99
    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
    See More

    Pro-King – Differential Bearing Cup (Part No.742G256)

    Differential Bearing Cup

    from

    $8.99
    Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

    Product Features:
    • All products are designed to meet or exceed OE quality, form, fit and funtion.
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    1981 Ford Thunderbird Differentials

    Maybe you’re in the middle of a full rebuild of that 1981 Ford Thunderbird. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 97 different Differentials in our inventory ranging from $0.99 to $789.99. That means you can find the exact parts or products you need to keep that 1981 Ford Thunderbird running smoothly.

    Differentials are only as good as their brand. We stock 12 different brands to make sure you have plenty of trusted parts to choose from for your 1981 Ford Thunderbird. National, Yukon Gear, and Dorman are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

    We know you’ll find the perfect Differentials for your 1981 Ford Thunderbird, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 219 reviews in this category, some of the top rated parts include Taper Bearing Cone with 3.0 stars and Shaft Repair Sleeve with 5.0 stars.

    So if you’re in the market for aftermarket Differentials to keep your 1981 Ford Thunderbird rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

    Differentials Brands To Make Your 1981 Ford Thunderbird Last

    Simple repair, complete replacement, or a full rebuild. No matter the job, your 1981 Ford Thunderbird demands trusted brand parts and products to keep it running. Many trusted brands of Differentials make up Advance Auto Parts’ inventory, and all are ready to help make your Thunderbird the best it can be. Be sure to browse some of our top Differentials brands and parts.

    Popular Powertrax Differentials

    We carry Powertrax parts in our stock across Differential Open Unit and Components categories, plus more. For a 1981 Ford Thunderbird, our most popular Powertrax Differentials include:
    Lock Right Locker
    from $444.99
    (1)
    Lock Right Locker
    Differential Open Unit and Components

    Top 1981 Ford Thunderbird Differentials from National

    National products are another trusted brand when it comes to Differentials for your 1981 Ford Thunderbird. Popular National parts include:
    Multi Purpose Seal
    from $11.99
    (28)
    Multi Purpose Seal
    Differential Pinion Seals
    Bearings
    from $15.99
    (9)
    Bearings
    Front Differential Pinion Bearings
    Bearings
    from $10.49
    (4)
    Bearings
    Rear Differential Pinion Bearings

    FAQs for 1981 Ford Thunderbird Differentials

    What are the most purchased Differentials for the 1981 Ford Thunderbird?

    Out of 97 Differentials for the 1981 Ford Thunderbird, the most popular in our inventory are:
    Differential Shaft Lock Bolt
    from $5.99
    (11)
    Differential Shaft Lock Bolt
    Differential Pinion Shaft Lock Bolts
    3 Qt - Penzoil 80W90 Conventional Gear Oil
    from $44.99
    This product is not rated
    3 Qt – Penzoil 80W90 Conventional Gear Oil
    Differential Oil
    Differential Cover Gasket
    from $6.49
    (13)
    Differential Cover Gasket
    Rear Housing Cover Gaskets

    What are the top-rated 1981 Ford Thunderbird Differentials?

    Top-rated Differentials for your 1981 Ford Thunderbird based on customer reviews/ratings are:
    Taper Bearing Cone
    from $17.99
    (2)
    Taper Bearing Cone
    “good deal”
    Shaft Repair Sleeve
    from $37.99
    (1)
    Shaft Repair Sleeve
    “Very delicate piece, but came shipped quite safely and not damaged. High quality.”
    Differential Master Bearing Kit - Koyo
    from $112.99
    (1)
    Differential Master Bearing Kit – Koyo
    “perfect product”