1978 Ford LTD Differentials

Keep Your 1978 Ford LTD in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1978 Ford LTD looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Bearings, Rear Differential Cover Gaskets, and Differential Pinion Seals. 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 Motive Gear. For example, National Differentials start at just $7.79 with an average 4.3 star rating. Powertrax and Motive Gear offer similar pricing and quality, backed by strong customer feedback. With over 306 reviews and a solid 4 star average, you can shop with confidence knowing other Ford LTD owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1978 Ford LTD Differential at Advance Auto Parts is around $270.82, with a range that starts at $1.99 and goes up to $1,211.99. With 360 options in stock from 12 trusted brands, finding the right fit is easy. Popular picks like Oil Seal, Pinion Crush Sleeves, and Multi-Purpose Bearing start at just $5.99 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 1978 Ford LTD in peak condition, inside and out.

Essential 1978 Ford LTD Differentials

Yukon Gear – Preload Shim Kit For Chrysler 8.75" & Ford 9" (Part No.55030)

Preload Shim Kit For Chrysler 8.75" & Ford 9"

from

$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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USA Standard Gear – Standard Spider Gear Set For Ford 8.8" Trac Loc Posi, 31 Spline (Part No.39032)

Standard Spider Gear Set For Ford 8.8" Trac Loc Posi, 31 Spline

from

$299.99
Product Features:
  • Spider gear kit
  • Fits Ford 8.8″ 31 spline Trac Loc positraction
  • Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.
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Motive Gear – Differential Pinion Solid Spacer Kit w/Shims (Part No.SS9)

Differential Pinion Solid Spacer Kit w/Shims

from

$45.99
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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Powertrax – Lock Right Locker (Part No.1830-LR)

Lock Right Locker

from

$444.99
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 – Dura Grip Case For Ford 8.8", 31 Spline (Part No.20073)

    Dura Grip Case For Ford 8.8", 31 Spline

    from

    $386.99
    Product Features:
    • Dura Grip positraction carrier case
    • Does not include spider gears
    • Fits Ford 8.8″ with 31 spline axles
    See More

    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″
    See More

    Yukon Gear – Adjuster Lock Bolt 3.062" & 3.250" Ford 9" Drop Out (Part No.32149)

    Adjuster Lock Bolt 3.062" & 3.250" Ford 9" Drop Out

    from

    $3.99
    Adjuster lock bolt 3.062″ & 3.250″ Yukon Ford 9″ Drop Out.

    Product Features:
    • Side adjuster lock bolt
    See More

    Dorman – Differential Clutch Kit (Part No.697-780)

    Differential Clutch Kit

    from

    $262.99
    This differential disc kit is a low-cost, time-saving repair solution for the posi-traction function. They are designed to match the fit and performance of the original disc on specific vehicle years, makes and models.

    Product Features:
    • Direct replacement – this differential clutch kit provides the necessary components for repairing the original equipment on specific vehicles
    • Quality materials – all components are built for reliable longevity and performance
    • Smart solution – provides original equipment fit and function for a competitive price compared to original manufacturer
    • Trustworthy quality – backed by team of designers and engineers in the United States
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    Powertrax – No-Slip Traction System (Part No.9206902800)

    No-Slip Traction System

    from

    $551.99
    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!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 – Positraction Internals For 8.8" Ford With 28 Spline Axles (Part No.16015)

    Positraction Internals For 8.8" Ford With 28 Spline Axles

    from

    $336.99
    Yukon positraction internals for 8.8″ Ford with 28 spline axles. This kit fits Yukon Gura Grip & Eaton positractions. 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 8.8″ with Yukon Dura Grip positraction with 28 spline axles
    • Includes two side gears, two pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
    See More

    Yukon Gear – 8" Ford O-Ring (Part No.30027)

    8" Ford O-Ring

    from

    $9.99
    8″ Ford O-ring.

    Product Features:
    • Pinion support o-ring
    • Fits Ford 8″
    See More

    Yukon Gear – Steel Spool For Ford 9" With 35 Spline Axles (Part No.32047)

    Steel Spool For Ford 9" With 35 Spline Axles

    from

    $379.99
    Yukon Performance 2-3/16″ deck steel spool for 9″ Ford with 35 spline axles. Spool uses 2″ journal bearings (30 degree). Does not fit Mark Williams. Yukon performance spools are made from the highest quality materials to ensure high strength and long life in performance applications. Spools provide 100% power to both tires at all times and are a lower cost alternative to lockers. Spools are not recommended for street driven vehicles. Yukon Performance spools come with a one year warranty against manufacturing defects.

    Product Features:
    • Fits Ford 9″ with 35 spline axles
    • Provides 100% traction to both wheels at all times
    • Not recommended for street driven vehicles
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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
    See More

    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
    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

    National – Multi-Purpose Bearing (Part No.R-1535-TAV)

    Multi-Purpose Bearing

    from

    $41.99
    Product Features:
    • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
    • STRONG AND DURABLE: Controlled heat treatment process for strength and durability
    • 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

    Richmond Gear – Differential Bearing Kit (Part No.83-1011-1)

    Differential Bearing Kit

    from

    $153.99
    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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    Motive Gear – Differential Pinion Nut (Part No.379570S)

    Differential Pinion Nut

    from

    $6.99
    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

    Yukon Gear – 8.8" Ford Tracloc Clutch Set, Both Sides (Part No.16017)

    8.8" Ford Tracloc Clutch Set, Both Sides

    from

    $207.99
    8.8″ Ford TracLoc (with long ears–for early models only) clutch set, both sides.

    Product Features:
    • Clutch kit
    • Fit Ford 8.8″ Trac Loc positraction
    See More

    Driveworks – Oil Seal (Part No.S-7044NA)

    Oil Seal

    from

    $6.49
    Value-priced seal meets all cataloged application requirements.

    Product Features:
    • Brand may vary by location
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    Yukon Gear – Set Up Bearing (Part No.56045)

    Set Up Bearing

    from

    $153.99
    M802048 set-up bearing (one bearing). No return.

    Product Features:
    • Set up bearing
    • Fits M802048 pinion bearing
    • Easily slips on and off pinion journal to allow for easier pinion depth adjustment
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    Yukon Gear – Fine Thread Pinion Support Bolt (Aftermarket Aluminum Only) For 9" Ford (Part No.33243)

    Fine Thread Pinion Support Bolt (Aftermarket Aluminum Only) For 9" Ford

    from

    $5.99
    Fine thread pinion support bolt (aftermarket aluminum only) for 9″ Ford.

    Product Features:
    • Pinion support bolt for Ford 9″
    • 3/8″ x 24 thread
    • 1.5″ long
    See More

    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
    See More

    Yukon Gear – Pinion Gear And Thrust Washer (0.875" Shaft) For 8.8" Ford (Part No.33299)

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

    from

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

    Product Features:
    • Pinion gear thrust washer for Ford 8.8″
    • 0.875″ diameter cross pin shaft applications only
    See More

    Pro-King – Differential Crush Sleeve (Part No.761A034)

    Differential Crush Sleeve

    from

    $2.99
    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.
    See More

    USA Standard Gear – 9" Ford Spartan Locker Cross Pin, Long (Part No.17021)

    9" Ford Spartan Locker Cross Pin, Long

    from

    $49.99
    Product Features:
    • USA Standard Gear heavy-duty cross pin shaft
    • Fits Ford 9″
    • Works with Spartan Locker or standard open spider gears
    • Long shaft
    See More

    Yukon Gear – Pilot Bearing For Ford 8" (Part No.18043)

    Pilot Bearing For Ford 8"

    from

    $40.99
    9.25 Chrysler FRONT PINION KIT , 03 & UP DODGE TRUCK .

    Product Features:
    • Pilot bearing
    • Fits Ford 8″
    See More

    Yukon Gear – Yoke (Short, For Daytona Support) For Ford 9" With 28 Spline Pinion And A 1330 U/Joint Size (Part No.41055)

    Yoke (Short, For Daytona Support) For Ford 9" With 28 Spline Pinion And A 1330 U/Joint Size

    from

    $203.99
    Yukon yoke (short, for Daytona support) for Ford 9″ with 28 spline pinion and a 1330 U/joint size. 4″ length. 3.625″ snap ring span, 1.125″ cap diameter. Outside snap ring. All Yukon yokes come with a one year warranty against manufacturing defects.

    Product Features:
    • Fits Ford 9″
    • 28 spline
    • 1330 u-joint size
    • Outside snap ring design
    • 3.625″ snap ring span
    • 1.125″ cap diameter
    • U-bolt style
    See More

    Most Popular Differential Bearings for 1978 Ford LTDs

    Enhance your 1978 Ford LTD with one of the 7 Differential Bearings we have in stock, starting at just $7.29.

    National – Bearing Race (Part No.LM102910)

    Bearing Race

    from

    $7.79
    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

    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

    Yukon Gear – Pilot Bearing Retainer For Ford 9" (Part No.33255)

    Pilot Bearing Retainer For Ford 9"

    from

    $11.99
    Pilot bearing retainer for Ford 9″.

    Product Features:
    • Pilot bearing retainer for Ford 9″
    See More

    Yukon Gear – 8" Ford Pilot Bearing Retainer (Part No.33254)

    8" Ford Pilot Bearing Retainer

    from

    $13.99
    8″ Ford pilot bearing retainer.

    Product Features:
    • Pilot bearing retainer for Ford 8″
    See More

    FAG US – Bearing – TRB (Tapered Roller Bearing) (Part No.KT11)

    Bearing - TRB (Tapered Roller Bearing)

    from

    $21.79
    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

    FAG US – Cup (Part No.M88010)

    Cup

    from

    $11.29
    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.JL69310)

    Bearing Race

    from

    $7.29
    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 1978 Ford LTD Rear Differential Cover Gaskets

    Upgrade your LTD with one of our 2 best-selling Rear Differential Cover Gaskets.

    Yukon Gear – 9" Ford Gasket (Part No.23012)

    9" Ford Gasket

    from

    $11.99
    9″ Ford gasket.

    Product Features:
    • Dropout gasket
    • Fits Ford 9″
    See More

    Yukon Gear – 8" Dropout Housing Gasket (Part No.23010)

    8" Dropout Housing Gasket

    from

    $11.99
    8″ dropout housing gasket.

    Product Features:
    • Dropout gasket
    • Fits Ford 8″
    See More

    Top-Quality Differential Pinion Seals for 1978 Ford LTDs

    Choose a high-quality OEM or aftermarket Differential Pinion Seal for Ford LTDs and enjoy top-notch performance from $5.99.

    Driveworks – Oil Seal (Part No.S-3604)

    Oil Seal

    from

    $5.99
    Value-priced seal meets all cataloged application requirements.

    Product Features:
    • Brand may vary by location
    See More

    Driveworks – Oil Seal (Part No.S-7044NA)

    Oil Seal

    from

    $6.49
    Value-priced seal meets all cataloged application requirements.

    Product Features:
    • Brand may vary by location
    See More

    Yukon Gear – Pinion Seal For ’61-’85 9" Ford (Part No.30137)

    Pinion Seal For '61-'85 9" Ford

    from

    $17.99
    Pinion seal for ’61-’85 9″ Ford. 3″ OD.Yukon Mighty seal.

    Product Features:
    • Pinion seal
    • Fits 1961-1985 Ford 9″
    • 3.00″ O.D.
    See More

    Yukon Gear – 8" Ford Pinion Seal (Part No.30180)

    8" Ford Pinion Seal

    from

    $24.99
    8″ Ford pinion seal.Yukon Mighty seal.

    Product Features:
    • Pinion seal
    • Fits Ford 8″
    See More

    FAG US – Shaft Seal (Part No.SS2934)

    Shaft Seal

    from

    $21.79
    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

    FAG US – Shaft Seal (Part No.SS2865)

    Shaft Seal

    from

    $15.99
    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

    Motive Gear – Differential Pinion Seal (Part No.7044NA)

    Differential Pinion Seal

    from

    $12.99
    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

    Top Picks for 1978 Ford LTD Differential Oil

    Invest in one of our 3 durable Differential Oil for your 1978 Ford, knowing you’re getting trusted brands and expert craftsmanship.

    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

    Differential Ring Gear Bolts for 1978 Ford LTDs

    Make a smart move for your 1978 Ford LTD with products all priced from $1.99 to $43.99.

    Yukon Gear – Ford 8" & 9" Standard Open, Ag, & Detroit Locker Ring Gear Bolt (Part No.33058)

    Ford 8" & 9" Standard Open, Ag, & Detroit Locker Ring Gear Bolt

    from

    $5.99
    Ford 8″ & 9″ standard Open, AG, & Detroit locker ring gear bolt. 7/16″ head, .925″ long.

    Product Features:
    • Ring gear bolt for Ford 8″ and 9″
    • For use with standard open carrier, Auburn Gear limited slip and Detroit Locker
    • 7/16″ head
    • .925″ long
    See More

    Yukon Gear – Ford 8" & 9" Standard Open, Ag, & Detroit Locker Ring Gear Bolt (Part No.33043)

    Ford 8" & 9" Standard Open, Ag, & Detroit Locker Ring Gear Bolt

    from

    $5.99
    Ford 8″ & 9″ standard Open, AG, & Detroit locker ring gear bolt, 1.0″ long, Ford.

    Product Features:
    • Ring gear bolt for Ford 8″ and 9″
    • For use with standard open carrier, Auburn Gear limited slip and Detroit Locker
    • 1.0″ long
    See More

    Yukon Gear – Ford 8" & 9" Tracloc Ring Gear Bolt (Part No.33044)

    Ford 8" & 9" Tracloc Ring Gear Bolt

    from

    $4.99
    Ford 8″ & 9″ TracLoc ring gear bolt, 1-1/4″ long.

    Product Features:
    • Ring gear bolt for Ford 8″ and 9″
    • For use with Trac Loc limited slip
    • 1.25″ long
    See More

    Motive Gear – Ring Gear Bolt (Part No.D8OZ4216B)

    Ring Gear Bolt

    from

    $1.99


    Product Features:
    • BOLT 9″ FORD OPEN R.G. SAME AS M-4216A200
    See More

    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

    $43.99
    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
    See More

    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
    See More

    Top-Rated Differential Brands For Your 1978 Ford LTD

    When it comes to finding the perfect Differential for your 1978 Ford LTD, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 12 trusted brands. We carry the most popular Differential brands including Powertrax, National, and Motive Gear, and more, all known for their exceptional customer ratings (average brand rating of 4.7 stars) and competitive prices, as low as $2.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1978 Ford LTD, providing peace of mind with parts that meet or exceed OEM standards.

    Popular Powertrax 1978 Ford LTD Differentials

    If you’re looking for a top-quality Differential for your 1978 Ford LTD, Advance Auto Parts has exactly what you need with our selection of Powertrax Differentials. We have 2 Powertrax Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $444.99 and an average cost of $498.49, you’ll find the perfect Differential for your needs and budget. Powertrax Differentials for the 1978 Ford LTD come highly rated, with over 2 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 $444.99
    (1)
    Lock Right Locker
    “Fast service and the right part.”
    No-Slip Traction System
    from $551.99
    (1)
    No-Slip Traction System
    “Installed, no issues, works great.”

    Top-Quality National 1978 Ford LTD Differentials

    For those in search of a high-quality Differential for their 1978 Ford LTD, Advance Auto Parts offers a great selection of National Differentials. With 3 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 $7.79, with an average price of $17.92, giving you a range of options to suit your budget. Backed by over 11 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.
    Shaft Repair Sleeve
    from $37.99
    (1)
    Shaft Repair Sleeve
    “Very delicate piece, but came shipped quite safely and not damaged. High quality.”
    Bearing Race
    from $7.99
    (4)
    Bearing Race
    “Goes with M88010 bearing cup. Application was the pinion bearing race for a Ford 9 Inch on a 1957 Ford F-100.”
    Bearing Race
    from $7.79
    (6)
    Bearing Race
    “perfect fit”

    FAQs for 1978 Ford LTD Differentials

    What are the best-selling Differentials for 1978 Ford LTDs?

    Out of 360 Differentials that fit 1978 Ford LTDs, the following parts are the top sellers:

    What’s the price range for 1978 Ford LTD Differentials?

    The prices of Differentials for the 1978 Ford LTD range from $1.99 up to $1,211.99 for the most premium parts.

    What is the average price of a Differential for a 1978 Ford LTD?

    The average price for Differentials for the 1978 Ford LTD is $270.82. 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 LTD model years?

    Yes, we carry Differentials for 25 model years of Ford LTDs between 1965 and 1991. The following model years are the most popular for Differential purchases: 1991, 1990, 1989, 1988, 1987, 1986, 1985, 1984, and 1983.

    What are the cheapest Differentials for my 1978 Ford LTD?

    The cheapest 1978 Ford LTD Differentials we carry are:

    Does Advance Auto Parts sell Differentials for any other 1978 Ford models?

    Yes. We stock Differentials for 18 other popular 1978 Ford models. Some of the most popular are 1978 F-150 Differentials, 1978 F-250 Differentials, 1978 E-250 Econoline Differentials, 1978 E-350 Econoline Differentials, and 1978 E-150 Econoline Differentials.

    What are the top-rated Differentials that fit the 1978 Ford LTD?

    The one 1978 Ford LTD Differential we have in stock is the Ring Gear Bolt. It costs $1.99.

    What types of Differentials do you sell for my 1978 Ford LTD?

    As of 11/2/25, these are some of the most in-demand types of Differentials for a 1978 Ford LTD:

    Can I get help with 1978 Ford LTD 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 LTD Differentials?

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