1989 Ford Mustang Differentials

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Keep Your 1989 Ford Mustang in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1989 Ford Mustang looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Axle Shafts, Differential Covers, and Differential Bearings. 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 Motive Gear, National, and Driveworks. For example, Motive Gear Differentials start at just $7.99 with an average 4.0 star rating. National and Driveworks offer similar pricing and quality, backed by strong customer feedback. With over 1,895 reviews and a solid 4 star average, you can shop with confidence knowing other Ford Mustang owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1989 Ford Mustang Differential at Advance Auto Parts is around $298.45, with a range that starts at $1.29 and goes up to $2,064.99. With 227 options in stock from 17 trusted brands, finding the right fit is easy. Popular picks like Axle Housing Cover Gasket Rectangular Shaped, 10 Bolt Hole Gasket, Multi-Purpose Bearing, and 3 Qt – 80W90 Conventional Gear Oil With Posi Additive 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 Drive Shafts and Axles and Universal Joints. At Advance Auto Parts, we’re here to help you keep your 1989 Ford Mustang in peak condition, inside and out.

Essential 1989 Ford Mustang Differentials

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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Yukon Gear – 1310 And 1330 U/Bolt Kit (2 U-Bolts And 4 Nuts) For 9" Ford (Part No.41112)

1310 And 1330 U/Bolt Kit (2 U-Bolts And 4 Nuts) For 9" Ford

from

$18.99
1310 and 1330 U/bolt kit (2 U-bolts and 4 nuts) for 9″ Ford.

Product Features:
  • u-joint u-bolt kit
  • Fits Ford 9″
  • 1310 and 1330 u-joint size
  • Includes two u-bolts and four nuts
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Yukon Gear – 8.8" Ford Tracloc Clutch Set, Both Sides (Part No.16018)

8.8" Ford Tracloc Clutch Set, Both Sides

from

$241.99
8.8″ Ford TracLoc (with short ears–for late models only) clutch set, both sides.

Product Features:
  • Clutch kit
  • Fit Ford 8.8″ Trac Loc positraction
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Motive Gear – Differential Pinion Solid Spacer Kit w/Shims (Part No.4104)

Differential Pinion Solid Spacer Kit w/Shims

from

$10.49


Product Features:
  • SOLID SPACER FORD 8.8″ & 9″
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Yukon Gear – Standard Open Spider Gear Kit For 9" Ford With 31 Spline Axles And 4-Pinion Design (Part No.16034)

Standard Open Spider Gear Kit For 9" Ford With 31 Spline Axles And 4-Pinion Design

from

$317.99
Yukon standard open spider gear kit for 9″ Ford with 31 spline axles and 4-pinion design. 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 Ford 9″ open differential with 31 spline axles
  • Includes two side gears, four pinion gears, cross pin shaft, roll pins and spider gear thrust washers.
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Yukon Gear – Side Gear And Thrust Washer (0.875" Shaft) For 8.8" Ford (Part No.33300)

Side Gear And Thrust Washer (0.875" Shaft) For 8.8" Ford

from

$11.99
Side gear thrust washer (0.875″ shaft) for 8.8″ Ford.

Product Features:
  • Side gear thrust washer for Ford 8.8″
  • 0.875″ diameter cross pin shaft applications only
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Driveworks – Camshaft Seal (Part No.S-99139)

Camshaft Seal

from

$23.99
Product Features:
  • Brand may vary by location
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Schaeffler – Cone (Part No.KL44649)

Cone

from

$13.29
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
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Yukon Gear – Bearing Race Driver Set, 21 Piece (Part No.56030)

Bearing Race Driver Set, 21 Piece

from

$1566.99
21 Piece bearing race driver set. (Box wt: 140lbs) No return.

Product Features:
  • Bearing race driver set
  • 21 pieces
  • All steel construction
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Richmond Gear – Differential Spool (Part No.81-0931-1)

Differential Spool

from

$272.99
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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Yukon Gear – Crush Sleeve Eliminator Kit For Ford 9" For 35 Spline Pinion (Part No.55042)

Crush Sleeve Eliminator Kit For Ford 9" For 35 Spline Pinion

from

$175.99
9″ large solid pinion preload spacer & shim kit for 35 spline pinion.

Product Features:
  • Crush sleeve eliminator kit for Ford 9″ with 35 spline pinion
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Richmond Gear – Differential Cross Shaft (Part No.CSPF9)

Differential Cross Shaft

from

$26.49
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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Mr. Gasket – Differential Gasket (Part No.142)

Differential Gasket

from

$24.29
Mr. Gasket Axle Housing/Differential Cover or Rear End Gaskets are manufactured from a .047 inch thick cellulose/nitrile composite gasket material for excellent sealing and durability. They are precision die-cut for an excellent fit.

Product Features:
  • .047″ thick cellulose/nitrile composite gasket material
  • Precision die cut
  • Reusable
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Richmond Gear – RngPnnInstlKt (Part No.83-1011-B)

RngPnnInstlKt

from

$48.99
RngPnnInstlKt

Yukon Gear – The Carrier Bearing Puller (Part No.56072)

The Carrier Bearing Puller

from

$883.99
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 one ton applications including 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
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Yukon Gear – Trao Loc Spring For Ford 8.8", 28 Spline (Part No.33515)

Trao Loc Spring For Ford 8.8", 28 Spline

from

$63.99
Product Features:
  • Trac Loc spring
  • Fits 28 spline Ford 8.8
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Pro-King – Differential Internal Nest Kit (Part No.762B717A)

Differential Internal Nest Kit

from

$90.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:
  • Meets or exceeds OE specifications
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Yukon Gear – Trac Loc Ring Gear Bolt Washer For 8" And 9" Ford (Part No.33245)

Trac Loc Ring Gear Bolt Washer For 8" And 9" Ford

from

$3.99
Trac Loc ring gear bolt washer for 8″ and 9″ Ford.

Product Features:
  • Ring gear bolt for Ford 8″ and 9″
  • For Trac Loc positraction applications only
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Valvoline – High Performance Transmission & Differential Gear Oil: Conventional 80W-90, 1 Quart (Part No.VV831)

High Performance Transmission & Differential Gear Oil: Conventional 80W-90, 1 Quart

from

$12.99
Valvoline High Performance Gear Oil is an extreme pressure gear lubricant formulated with quality base oils and superior additives that helps protect against severe temperatures, shock loads, scuffing, scouring, corrosion and pitting in high speed, high load, high torque and high horsepower conditions.

Product Features:
  • Formulated for reliable gear protection
  • Protects against severe temperatures to help extend service life
  • Formulated with extreme-pressure additives to minimize gear wear from shock loads
  • Helps protect against gear wear from scuffing, scouring, corrosion and pitting
  • Recommended for conventional hypoid differentials and non-synchronized manual transmissions in passenger cars, light trucks, sport utility vehicles, vans and heavy-duty trucks where an API-GL5 or GL-4 fluid is specified
  • PLEASE NOTE: Valvoline recommends SynPower Full Synthetic Gear Oil for limited slip differentials
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Yukon Gear – Standard Open Spider Gear Kit For And 9" Ford With 28 Spline Axles And 4-Pinion Design (Part No.16032)

Standard Open Spider Gear Kit For And 9" Ford With 28 Spline Axles And 4-Pinion Design

from

$315.99
Yukon standard open spider gear kit for and 9″ Ford with 28 spline axles and 4-pinion design. 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
  • Fits Ford 8″ and 9″ open differential with 28 spline axles
  • Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
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Dorman – Help – Differential Shaft Lock Bolt (Part No.81048)

Differential Shaft Lock Bolt

from

$6.79
This differential pinion shaft lock bolt is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this differential pinion shaft lock bolt matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this bolt is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Yukon Gear – Pinion Nut (Part No.33154)

Pinion Nut

from

$7.99
Pinion nut for Ford 7.5″, 8″, 8.8″, 9 3/8″ & 9″. 1 1/6″ socket, 3/4″ x 20 thread.

Product Features:
  • Pinion nut for Ford 7.5″, 8″ and 9″
  • 3/4″ x 20 thread
  • 1 1/6″ socket
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Powertrax – Lock Right Locker (Part No.1821-LR)

Lock Right Locker

from

$441.99
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

    Yukon Gear – Carrier Installation Kit For Ford 8.8" Differential (Part No.57007)

    Carrier Installation Kit For Ford 8.8" Differential

    from

    $134.99
    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
    See More

    Yukon Gear – Pinion Install Kit For Ford 7.5" Differential (Part No.13039)

    Pinion Install Kit For Ford 7.5" Differential

    from

    $184.99
    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, 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 7.5″
    • Included are pinion bearings and races, pinion seal, pinion nut, crush sleeve, complete pinion shim kit, and marking compound with brush.
    See More

    Yukon Gear – Pinion Install Kit For Ford 8" Differential (Part No.13040)

    Pinion Install Kit For Ford 8" Differential

    from

    $251.99
    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, 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 8″
    • Included are pinion bearings and races, pinion seal, pinion nut, crush sleeve, complete pinion shim kit, and marking compound with brush.
    See More

    Motive Gear – Differential Master Bearing Kit – Timken (Part No.R7.5FRMKT)

    Differential Master Bearing Kit - Timken

    from

    $111.99
    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

    Product Features:
    • FORD 7.5″ MASTER BEARING KIT (TIMKEN)
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    Motive Gear – Differential Bearing Kit – Koyo (Part No.R9R325S)

    Differential Bearing Kit - Koyo

    from

    $97.99
    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

    Product Features:
    • BEARING KIT FORD 9″ W/3.25 CARRIER & STD PINION SUPPORT
    See More

    Most Popular Differential Axle Shafts for 1989 Ford Mustangs

    Enhance your 1989 Ford Mustang with one of the 12 Differential Axle Shafts we have in stock, starting at just $117.99.

    Motive Gear – Axle Shaft (Part No.MG1231)

    Axle Shaft

    from

    $149.99
    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
    See More

    USA Standard Gear – Axle For ’83-’92 2WD & 4WD Ford Ranger, Left Hand Side (Part No.35007)

    Axle For '83-'92 2WD & 4WD Ford Ranger, Left Hand Side

    from

    $175.99
    USA Standard Axle for ’83-’92 2WD & 4WD Ford Ranger, left hand side. 29 5/32″ long, 5 lug, 28 spline.

    Product Features:
    • Fits 1983-1992 Ford 7.5″ rear in Ford Ranger
    • Left hand side
    • 28 spline
    • 29 5-32″ long
    • 5 lug
    See More

    Yukon Gear – 79-’93 Mustang Axle Kit, 28 Spline, 4 Lug Axles With Duragrip Positraction (Part No.21554)

    79-'93 Mustang Axle Kit, 28 Spline, 4 Lug Axles With Duragrip Positraction

    from

    $1050.00
    Product Features:
    • 28 spline
    • 4 lug
    • Fits Ford 8.8″ in 1979-1993 Mustang
    • Includes Dura Grip positraction, carrier bearings and races, carrier shims, axle bearings and seal and studs
    See More

    Yukon Gear – 79-’93 Mustang Axle Kit, 31 Spline, 5 Lug Axles With Duragrip Positraction (Part No.21557)

    79-'93 Mustang Axle Kit, 31 Spline, 5 Lug Axles With Duragrip Positraction

    from

    $954.99
    Product Features:
    • 31 spline
    • 5 lug
    • Fits Ford 8.8″ in 1979-1993 Mustang
    • Includes Dura Grip positraction, carrier bearings and races, carrier shims, axle bearings and seal and studs
    See More

    Yukon Gear – 79-’93 Mustang Axle Kit, 28 Spline, 5 Lug Axles With Duragrip Positraction (Part No.21556)

    79-'93 Mustang Axle Kit, 28 Spline, 5 Lug Axles With Duragrip Positraction

    from

    $899.99
    Product Features:
    • 28 spline
    • 5 lug
    • Fits Ford 8.8″ in 1979-1993 Mustang
    • Includes Dura Grip positraction, carrier bearings and races, carrier shims, axle bearings and seal and studs
    See More

    Yukon Gear – 79-’93 Mustang Axle Kit, 31 Spline, 4 Lug Axles With Duragrip Positraction (Part No.21555)

    79-'93 Mustang Axle Kit, 31 Spline, 4 Lug Axles With Duragrip Positraction

    from

    $889.99
    Product Features:
    • 31 spline
    • 4 lug
    • Fits Ford 8.8″ in 1979-1993 Mustang
    • Includes Dura Grip positraction, carrier bearings and races, carrier shims, axle bearings and seal and studs
    See More

    Pro-King – Rear Axle Shaft Kit (Part No.AXK-212)

    Rear Axle Shaft Kit

    from

    $241.99
    Pro-King is the leading supplier of transmission and driveline products in the aftermarket. All products are designed to meet or exceed OE quality, form, fit and function.

    Product Features:
    • Meets or exceeds OE specifications
    • Dual heat treating process
    See More

    Yukon Gear – 1541H Alloy 4 Lug Rear Axle For 7.5" And 8.8" Ford Thunderbird, Cougar, Or Mustang (Part No.21179)

    1541H Alloy 4 Lug Rear Axle For 7.5" And 8.8" Ford Thunderbird, Cougar, Or Mustang

    from

    $234.99
    Yukon 1541H alloy 4 lug rear axle for 7.5″ and 8.8″ Ford Thunderbird, Cougar, or Mustang with a length of 29-1/4″ inches and 28 splines. 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 C-clip axle.

    Product Features:
    • Fits 1979-1993 Mustang, Thunderbird and Cougar
    • 28 spline
    • 29 1/4″ long
    • 4 lug
    • Will not work in Mustang Cobra applications
    See More

    Yukon Gear – 1541H Alloy 5 Lug Left Hand Rear Axle For 7.5" And 8.8" Ford Ranger (Part No.21181)

    1541H Alloy 5 Lug Left Hand Rear Axle For 7.5" And 8.8" Ford Ranger

    from

    $234.99
    Yukon 1541H alloy 5 lug left hand rear axle for 7.5″ and 8.8″ Ford Ranger (right hand for Aerostar) with a length of 29-5/32″ inches and 28 splines. 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 C-clip axle.

    Product Features:
    • Fits 1983-1992 Ford 7.5″ rear in Ford Ranger
    • Left hand side
    • 28 spline
    • 29 5-32″ long
    • 5 lug
    See More

    Pro-King – Rear Axle Shaft Kit (Part No.AXK-279)

    Rear Axle Shaft Kit

    from

    $181.99
    Pro-King is the leading supplier of transmission and driveline products in the aftermarket. All products are designed to meet or exceed OE quality, form, fit and function.

    Product Features:
    • Meets or exceeds OE specifications
    • Dual heat treating process
    See More

    USA Standard Gear – Axle For Ford Mustang, Thunderbird & Cougar (Part No.35105)

    Axle For Ford Mustang, Thunderbird & Cougar

    from

    $177.99
    USA Standard axle for Ford Mustang, Thunderbird & Cougar. 29 1/4″ long, 28 spline, 4 lug.

    Product Features:
    • 28 spline
    • 4 lug
    • 29.25″ long
    • Fits Ford 7.5″ and 8.8″ in 1979-1993 Mustang
    See More

    Dorman – Rear Axle Shaft, Left Or Right (Part No.630-228A)

    Rear Axle Shaft, Left Or Right

    from

    $117.99
    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
    See More

    Best-Selling 1989 Ford Mustang Differential Covers

    Upgrade your Mustang with one of our 5 best-selling Differential Covers.

    Yukon Gear – Steel Cover For Ford 8.8" (Part No.32328)

    Steel Cover For Ford 8.8"

    from

    $99.99
    Yukon outer stub axle for Chrysler 9.25″ front. This axle uses a 1485 u/joint and has 33 splines.

    Product Features:
    • Fits Ford 8.8″
    • Steel
    See More

    Yukon Gear – DiffrlCover (Part No.32364)

    DiffrlCover

    from

    $99.99
    DiffrlCover

    Yukon Gear – Chrome Cover For 8.8" Ford (Part No.32009)

    Chrome Cover For 8.8" Ford

    from

    $74.99
    Chrome cover for 8.8″ Ford.

    Product Features:
    • Fits Ford 8.8″
    • Chrome
    See More

    Yukon Gear – Chrome Cover For 7.5" Ford (Part No.32008)

    Chrome Cover For 7.5" Ford

    from

    $42.99
    Chrome cover for 7.5″ Ford.

    Product Features:
    • Fits Ford 7.5″
    • Chrome
    See More

    B & M – Rear End Cover 1 EA B&M (Part No.40297)

    Rear End Cover 1 EA B&M

    from

    $299.99
    B&M Cast Aluminum Differential Covers are designed to strengthen the differential by preventing case distortion and ring gear & bearing cap deflection. Constructed of A356.0-T6 aluminum, these rugged covers significantly increase the fluid capacity and dissipate heat much faster than the stock factory unit to prolong the life of your ring and pinion gears. Additional features include an engraved B&M logo, drain and fill port locations, a magnetic drain plug for catching ferrous metal particles, and complete hardware and installation instructions.

    Product Features:
    • Additional Oil Capacity
    • More Cooling Ability
    • No Dipstick Modification
    • Some Include Fluid Pickup Extension
    • Built-In Drain Plugs
    • Cast Aluminum
    See More

    Top-Quality Differential Bearings for 1989 Ford Mustangs

    Choose a high-quality OEM or aftermarket Differential Bearing for Ford Mustangs and enjoy top-notch performance from $10.99.

    National – Multi-Purpose Bearing (Part No.A-6)

    Multi-Purpose Bearing

    from

    $16.99
    National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

    Product Features:
    • CONSISTENT PERFORMANCE — Matched cup and cone components ensure consistent performance
    • 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
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    Driveworks – Taper Bearing Cone (Part No.S-LM-501349)

    Taper Bearing Cone

    from

    $10.99
    Value-priced bearing meets all cataloged application requirements.

    Product Features:
    • Brand may vary by location
    See More

    National – Multi-Purpose Bearing (Part No.A-36)

    Multi-Purpose Bearing

    from

    $27.99
    Product Features:
    • CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
    • 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.362A)

    Bearing Race

    from

    $15.99
    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
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    Schaeffler – Bearing – TRB (Tapered Roller Bearing) (Part No.KT36)

    Bearing - TRB (Tapered Roller Bearing)

    from

    $34.49
    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
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    Schaeffler – Bearing – TRB (Tapered Roller Bearing) (Part No.KT5)

    Bearing - TRB (Tapered Roller Bearing)

    from

    $21.29
    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

    Top Picks for 1989 Ford Mustang Differential Oil

    Invest in one of our 6 durable Differential Oil for your 1989 Ford, knowing you’re getting trusted brands and expert craftsmanship.

    Valvoline – MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon (Part No.773775)

    MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon

    from

    $35.99
    Valvoline MaxLife Multi-Vehicle ATF is a full-synthetic formulation with advanced additives to prevent the major causes of transmission breakdown and help extend transmission life.  Developed to help prevent leaks, maximize transmission performance, reduce transmission wear, and maintain smooth shifting longer than conventional fluids. It is suitable for use in a broad range of ATF applications including most Ford, GM, Toyota, Honda, Nissan, Hyundai, BMW, Mercedes, Volvo, VW & Audi. Recommended for use in the following applications: GM DEXRON-II, DEXRON-III, DEXRON-VI, Ford MERCON LV, Toyota/Lexus Type T, T-II, T-IV, WS, Honda/Acura, ATF-Z1, Nissan/Infiniti Matic-D, Matic-J, Matric-K, Matic-S, Hyundai/Kia SP-II, SP-III, SP-IV, SPH-IV, BMW 7045E, ETL 8072B, LA2634, LT71141, Allison C-4, Mercedes Benz NAG-1, Volvo 1161521, 1161540, 97340, 1273.41, and VW/Audi G-052-025-A2, G-052-162-A1. For CVT applications Valvoline recommends Valvoline Full Synthetic CVT Fluid.

    Product Features:
    • Formulated with full-synthetic base oils and long life friction modifiers to help improve smooth shifting, eliminate slippage and shudder, prevent clutch wear and improve drivability longer than conventional fluids
    • High-performance seal conditioners maintain and preserve the elasticity of seals to help prevent leaks in high mileage transmissions
    • Developed with anti-wear technology to help improve transmission durability
    • Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures
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    Yukon Gear – 3 Qt – 80W90 Conventional Gear Oil With Posi Additive (Part No.15003)

    3 Qt - 80W90 Conventional Gear Oil With Posi Additive

    from

    $57.99
    3 Qt. Penzoil 80W90 conventional gear Oil. W/ bottle of Posi additive.

    Product Features:
    • Includes three quarts of conventional oil and one 4oz bottle of Yukon positraction additive
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    Yukon Gear – 3 Qt – Penzoil 80W90 Conventional Gear Oil (Part No.15002)

    3 Qt - Penzoil 80W90 Conventional Gear Oil

    from

    $44.99
    3 Qt. Penzoil 80W90 conventional gear Oil.

    Product Features:
    • Includes three quarts of conventional oil
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    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
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    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-Rated Rear Differential Cover Gaskets for 1989 Ford Mustangs

    Make a smart move for your 1989 Ford Mustang with products all priced from $4.99 to $24.29.

    Felpro – Axle Housing Cover Gasket Rectangular Shaped, 10 Bolt Hole Gasket (Part No.RDS 55341)

    Axle Housing Cover Gasket Rectangular Shaped, 10 Bolt Hole Gasket

    from

    $15.99
    Fel-Pro gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

    Product Features:
    • Meets or exceeds all original equipment specifications
    • Application specific design to ensure a perfect fit
    • Engineered for the sealing repair environment
    • Validated for fit, form and function
    • Unsurpassed quality you can trust
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    Mr. Gasket – Differential Gasket (Part No.142)

    Differential Gasket

    from

    $24.29
    Mr. Gasket Axle Housing/Differential Cover or Rear End Gaskets are manufactured from a .047 inch thick cellulose/nitrile composite gasket material for excellent sealing and durability. They are precision die-cut for an excellent fit.

    Product Features:
    • .047″ thick cellulose/nitrile composite gasket material
    • Precision die cut
    • Reusable
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    Yukon Gear – 8.8" Ford Cover Gasket (Part No.23011)

    8.8" Ford Cover Gasket

    from

    $12.99
    8.8″ Ford cover gasket.

    Product Features:
    • Cover gasket
    • Fits Ford 8.8″
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    Yukon Gear – 7.5" Ford Cover Gasket (Part No.23009)

    7.5" Ford Cover Gasket

    from

    $9.99
    7.5″ Ford cover gasket.

    Product Features:
    • Cover gasket
    • Fits Ford 7.5″
    See More

    Pro-King – Differential Cover Gasket (Part No.762B303)

    Differential Cover Gasket

    from

    $4.99
    Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

    Product Features:
    • Meets or exceeds OE specifications
    See More

    Top-Rated Differential Brands For Your 1989 Ford Mustang

    When it comes to finding the perfect Differential for your 1989 Ford Mustang, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 17 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 $7.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1989 Ford Mustang, providing peace of mind with parts that meet or exceed OEM standards.

    Popular National 1989 Ford Mustang Differentials

    If you’re looking for a top-quality Differential for your 1989 Ford Mustang, Advance Auto Parts has exactly what you need with our selection of National Differentials. We have 3 National Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $11.99 and an average cost of $15.66, you’ll find the perfect Differential for your needs and budget. National Differentials for the 1989 Ford Mustang come highly rated, with over 34 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.
    Multi-Purpose Bearing
    from $16.99
    (25)
    Multi-Purpose Bearing
    “Smooth”
    Bearing Race
    from $11.99
    (2)
    Bearing Race
    “Reasonable price and woks well. front diff 2006 Escalade esv”
    Multi-Purpose Bearing
    from $17.99
    (7)
    Multi-Purpose Bearing
    “Comparable with the Timkens I removed. NATIONAL bearings have lasted decades in many of my other machines.”

    Top-Quality Driveworks 1989 Ford Mustang Differentials

    For those in search of a high-quality Differential for their 1989 Ford Mustang, 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 $10.99, 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.
    Taper Bearing Cone
    from $10.99
    (3)
    Taper Bearing Cone
    “Worked for my 2006 escalade esv front diff”

    FAQs for 1989 Ford Mustang Differentials

    What are the best-selling Differentials for 1989 Ford Mustangs?

    Out of 227 Differentials that fit 1989 Ford Mustangs, the following parts are the top sellers:

    What’s the price range for 1989 Ford Mustang Differentials?

    The prices of Differentials for the 1989 Ford Mustang range from $1.29 up to $2,064.99 for the most premium parts.

    What is the average price of a Differential for a 1989 Ford Mustang?

    The average price for Differentials for the 1989 Ford Mustang is $298.45. 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 Ford Mustang model years?

    Yes, we carry Differentials for 55 model years of Ford Mustangs between 1964 and 2025. The following model years are the most popular for Differential purchases: 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, and 2015.

    What are the cheapest Differentials for my 1989 Ford Mustang?

    The cheapest 1989 Ford Mustang Differentials we carry are:

    Does Advance Auto Parts sell Differentials for any other 1989 Ford models?

    Yes. We stock Differentials for 57 other popular 1989 Ford models. Some of the most popular are 1989 E-250 Econoline Differentials, 1989 E-350 Econoline Differentials, 1989 E-150 Econoline Differentials, 1989 Thunderbird Differentials, and 1989 Bronco Differentials.

    What types of Differentials do you sell for my 1989 Ford Mustang?

    As of 3/1/26, these are some of the most in-demand types of Differentials for a 1989 Ford Mustang:

    Can I get help with 1989 Ford Mustang Differential orders?

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

    What is your return policy for Ford Mustang Differentials?

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