1981 Ford Thunderbird Differentials

Essential 1981 Ford Thunderbird Differentials

Yukon Gear – Flat Side Gear Without Hub For 9" Ford With 31 Splines (Part No.16162)

Flat Side Gear Without Hub For 9" Ford With 31 Splines

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$46.99
Flat side gear without hub for 9″ Ford with 31 splines.

Product Features:
  • Side gear without hub
  • Fits Ford 8″ and 9″ Trac Loc positraction with 31 spline axles
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Idemitsu – Type HP Automatic Transmission Fluid – 1 qt (Part No.30040099-75000C)

Type HP Automatic Transmission Fluid - 1 qt

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$13.79
Formulated to meet the specific requirements of Subaru vehicles equipped with conventional (non-CVT) transmissions up to model year 2005. Recommended for service-fill in all Subaru automatic transmissions where SUBARU ATF HP is specified. Fuel economy demands and more sophisticated electronic controls have made automatic transmissions not only more complex, but also unique to each vehicle manufacturer. Long gone are the days of having just a couple choices of automatic transmission fluid type. IDEMITSU is the factory fill Automatic Transmission Fluid (ATF) supplier to most Asian imports. IDEMITSU application-specific ATF products match the exact friction materials and performance requirements of each different vehicle model for which they are made.

Product Features:
  • Excellent resistance to oxidation and thermal breakdown provide long fluid life and extended protection
  • Precisely engineered frictional characteristics guarantee smooth shifting and outstanding anti-shudder performance
  • Provides superior cleanliness, maintaining the transmission free of sludge and varnish deposits
  • Excellent seal compatibility and conditioning reduces risk of fluid leaks due to seal shrinkage, hardening and cracking
  • Advanced anti-wear technology provides maximum protection to gears and bearings
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Powertrax – Grip LOK Traction System (Part No.LK109031)

Grip LOK Traction System

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$679.99
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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Yukon Gear – Dana 44, Ford 8" / 9", And Model 20 Side Gear Thrust Washer Replacement (Part No.33283)

Dana 44, Ford 8" / 9", And Model 20 Side Gear Thrust Washer Replacement

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$5.99
Product Features:
  • Side gear thrust washer for Ford 8″, Ford 9″ and AMC Model 20
  • 0.030″ thick
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Powertrax – Lock Right Locker (Part No.2415-LR)

Lock Right Locker

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$442.99
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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    Yukon Gear – Cross Pin Bolt (Part No.33067)

    Cross Pin Bolt

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    $6.99
    Cross pin bolt for Chrysler 8.25″, 9.25″ rear, Ford 7.5″, 8.8″, GM 12 bolt car & truck, 7.2″ IFs, 7.5″, 7.6″, 8.0″, 8.25″ IFS & 8.5″.

    Product Features:
    • Cross pin bolt for Chrysler 8.25″ and 9.25″ rear, Ford 7.5″ and 8.8″, GM 12 botl car and truck, 8.5″, 8.25″ IFS, 8.0″, 7.625″, 7.5″ and 7.2″ IFS
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    Yukon Gear – Carrier Installation Kit For Ford 8.8" Differential (Part No.57007)

    Carrier Installation Kit For Ford 8.8" Differential

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    $129.99
    Yukon Carrier installation kits are great, low cost kit for carrier changes such as Positraction or locker upgrades. Carrier installation kit for Ford 8.8″ differential. This kit contains carrier bearings, races and shims.

    Product Features:
    • Fits Ford 8.8″
    • Includes carrier bearings and races and “super” carrier shim 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"

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    $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 – Axle Shaft (Part No.MG1231)

    Axle Shaft

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    $143.99
    The Motive Gear replacement axle shaft offers an OE-quality axle shaft at a fraction of the OE cost. Manufactured from 1541H material on high-tolerance CNC equipment, this axle shaft is designed to provide a perfect fit every time.

    Product Features:
    • AXLE SHAFT 8.8″ 28 SPL. 29 1/4″ 79-93 MUSTANG L & R
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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

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    $52.99
    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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    National – Shaft Repair Sleeve (Part No.99157)

    Shaft Repair Sleeve

    from

    $37.49
    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.

    Product Features:
    • Designed to repair damaged, grooved or worn shafts
    • Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
    • Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
    • Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
    • Easy to install with removable flange and installation tool
    • Installation tool reduces sleeve distortion and allows for installation without removal from the shaft
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    Motive Gear – Differential Pinion Shim Kit (Part No.WAA4663)

    Differential Pinion Shim Kit

    from

    $15.99
    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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    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"

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    $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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    Richmond Gear – RngPnn (Part No.79-0045-1)

    RngPnn

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    $623.99
    RngPnn

    Pro-King – Differential Ring Gear Bolt (Part No.761A935)

    Differential Ring Gear Bolt

    from

    $0.99
    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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    Yukon Gear – Trao Loc Spring For Ford 8.8", 31 Spline (Part No.33516)

    Trao Loc Spring For Ford 8.8", 31 Spline

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    $99.99
    Product Features:
    • Trac Loc spring for Ford 8.8″
    • 31 spline applications only
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    Yukon Gear – Chrome Cover For 7.5" Ford (Part No.32008)

    Chrome Cover For 7.5" Ford

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    $42.99
    Chrome cover for 7.5″ Ford.

    Product Features:
    • Fits Ford 7.5″
    • Chrome
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    Yukon Gear – The Carrier Bearing Puller (Part No.56034)

    The Carrier Bearing Puller

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    $689.99
    The Yukon carrier bearing Puller works with an impact gun to quickly and safely remove carrier bearings without damaging them. This unit comes with a handy bench top stand and works with up to most standard one ton applications. This unit is works with differentials up to one-ton applcations. It is not compatible with Dana 70HD, Dana 80, 10.25″ & 10.5″ Ford, or GM & Chrysler 11.5″ differentials.

    Product Features:
    • Carrier bearing puller
    • Works with an impact gun to safely and easliy remove carrrier bearings
    • Not compatible with Dana 70HD, Dana 80, Ford 10.25″ and 10.5″ or Gm and Chrysler 11.5″ applications
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    Yukon Gear – Bearing Race Driver (Part No.56023)

    Bearing Race Driver

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    $198.99
    Bearing race driver. No return.

    Product Features:
    • Bearing race driver
    • Fits M88010 race
    • All steel construction
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    Yukon Gear – Pinion Install Kit For Ford Daytona 9" Differential (Part No.13045)

    Pinion Install Kit For Ford Daytona 9" Differential

    from

    $259.99
    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, pinion nut, crush sleeve, complete pinion shim kit, and marking compound with brush.
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    USA Standard Gear – Master Overhaul Kit for the Ford 7.5 Differential (Part No.37027)

    Master Overhaul Kit for the Ford 7.5 Differential

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    $196.99
    USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), threading locking compound, marking compound with brush and gasket.

    Product Features:
    • Fits Ford 7.5″
    • Uses Koyo bearings and races
    • Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, thread locker, marking compound with brush and gasket.
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    Yukon Gear – Standard Open & Tracloc Pinion Gear And Thrust Washer For 7.5" Ford (Part No.33296)

    Standard Open & Tracloc Pinion Gear And Thrust Washer For 7.5" Ford

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    $10.99
    Standard Open & TracLoc pinion gear thrust washer for 7.5″ Ford.

    Product Features:
    • Pinion gear thrust washer
    • Fits Ford 7.5″
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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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    National – Bearings (Part No.02820)

    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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    National – Multi Purpose Seal (Part No.6930)

    Multi Purpose Seal

    from

    $28.49
    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.

    Product Features:
    • Low swell in hydrocarbon fluids
    • Design type: spring loaded; multi-lip
    • Provides good low temperature capability
    • Temperature range: -40°F to 225°F; -40°C to 107°C
    • Delivers quality and reliable performance for every type of repair
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    Yukon Gear – Shim Kit For 9" Ford Tracloc Clutch (Part No.16030)

    Shim Kit For 9" Ford Tracloc Clutch

    from

    $46.99
    Shim kit for 9″ Ford TracLoc clutch, (8″ also) positraction.

    Product Features:
    • Shim kit
    • Fits Ford 8″ and 9″ Trac Loc
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    Yukon Gear – Bearing Install Kit For Ford 9" Differential, Lm603011 Bearings (Part No.11045)

    Bearing Install Kit For Ford 9" Differential, Lm603011 Bearings

    from

    $239.99
    Yukon Bearing installation kits are perfect for shops & builders who have shims on the shelf and are looking to save cost over a Master Overhaul kit. This kit uses carrier bearings & races with an I.D. of 1.780″ and an O.D. of 3.062″. This kit uses Timken bearings and races along with all high quality small parts. kit includes carrier bearings and races, pinion bearings and races, pilot bearing, pinion seal, crush sleeve (if applicable), oil baffles and slingers (if applicable), marking compound and 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 ring & pinion set.

    Product Features:
    • Fits Ford 9″ with LM603011 carrier races
    • Included are carrier bearings and races, pinion bearings and races, pinion seal, crush sleeve, pilot bearing, marking compound and brush.
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    Motive Gear – Differential Crush Sleeve (Part No.B7A4662A)

    Differential Crush Sleeve

    from

    $2.99
    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!
    See More

    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 95 different Differentials in our inventory ranging from $0.99 to $883.99. 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 201 reviews in this category, some of the top rated parts include Differential Pinion Shim Kit with 5.0 stars and Differential Master Bearing Kit – Koyo 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 Complete Differentials categories, plus more. For a 1981 Ford Thunderbird, our most popular Powertrax Differentials include:
    Lock Right Locker
    from $444.99
    (1)
    Lock Right Locker
    Complete Differentials

    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
    (7)
    Bearings
    Front Differential Pinion Bearings
    Bearings
    from $10.49
    (2)
    Bearings
    Differential Bearings

    FAQs for 1981 Ford Thunderbird Differentials

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

    Out of 95 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 Differential 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:
    Differential Pinion Shim Kit
    from $7.49
    (1)
    Differential Pinion Shim Kit
    “good product”
    Differential Master Bearing Kit - Koyo
    from $112.99
    (1)
    Differential Master Bearing Kit – Koyo
    “perfect product”
    Differential Pinion Nut
    from $6.49
    (1)
    Differential Pinion Nut
    “If a pinion nut is ever removed from the pinion shaft, it is recommended NOT to reuse it. Replace it with a BRAND NEW nut, even if the old nut is rel”