1978 Oldsmobile 98 Differentials

Name: Differential Lock Assembly
Brand: Powertrax
SKU: 1940-LR
Price: 441.99 USD

Please Select your Vehicle to See Exact Fit Parts

Keep Your 1978 Oldsmobile 98 in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1978 Oldsmobile 98 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Rear Housing Cover Gaskets, Differential Pinion Seals, and Rear Differential Cover Gaskets. 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, Motive Gear, and Felpro. For example, National Differentials start at just $11.99 with an average 4.3 star rating. Motive Gear and Felpro offer similar pricing and quality, backed by strong customer feedback. With over 4,576 reviews and a solid 4 star average, you can shop with confidence knowing other Oldsmobile 98 owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1978 Oldsmobile 98 Differential at Advance Auto Parts is around $166.96, with a range that starts at $2.79 and goes up to $551.99. With 105 options in stock from 12 trusted brands, finding the right fit is easy. Popular picks like Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, and Multi-Purpose Bearing start at just $8.99 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 Oldsmobile 98 in peak condition, inside and out.

Looking for the perfect Differential for your 1978 Oldsmobile 98? You’re in the right place. Below, you’ll find links to various types of Differentials that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Differentials, ensuring durability and a precise fit for your Oldsmobile 98. Whether you’re driving a 1978 model or another popular model year like 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, and 1996, we’ve got you covered. Purchasing Differentials from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Differentials that fit your vehicle.

Essential 1978 Oldsmobile 98 Differentials

from

$441.99

For vehicles that are driven daily, the Power Trax 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 Power Trax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Power Trax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Power Trax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds.

Product Features:

The Power Trax Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Power Trax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.
Power Trax lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.
Power Trax 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.
Power Trax ia an Extreme Traction System

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$4.99

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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$19.99

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

from

$17.49

Product Features:

Brand may vary by location

from

$111.99

Product Features:

GM10 BOLT 8.5″ 28 SPL INTERNAL KIT (OPEN)

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$213.99

Yukon Gear & Axle offers an extensive line of general replacement and high-performance axles for passenger car, truck and SUV applications. High quality alloys and the latest in heat-treating technologies provide a stronger-than-stock axle for off-road, on the street, or at the track.

Product Features:

28 spline
30 7/16″ long
Fits GM 8.5″ in 1980-1988 Caprice and Impala

from

$216.99

This differential bearing kit includes all necessary installation components for a differential ring and pinion on certain vehicle years, makes and models.

Product Features:

Convenient kit – this ring and pinion bearing installation kit includes all necessary components for a complete repair on certain vehicle applications
Related repair – smart to have on hand when installing a differential ring and pinion
Durable construction – built for reliable longevity, free of defects in materials and workmanship
Trustworthy quality – backed by team of designers and engineers in the United States

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$151.99

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.

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$5.99

This differential crush sleeve is designed to match the fit and function of the original sleeve on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

Direct replacement – this differential crush sleeve is designed to match the fit and function of the original sleeve on specified vehicles
Required replacement – when servicing the differential
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

from

$10.99

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
Unsurpassed quality you can trust
Validated for fit, form and function
Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

from

$9.99

Product Features:

KIT SHIM PINION

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$108.99

Product Features:

MINI SPOOL GM12 BOLT CAR & TRUCK STRANGE # 088430

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$7.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$39.49

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

from

$23.99

Product Features:

Brand may vary by location

from

$322.99

Product Features:

GM 10BL 8.5 R/P 3.42 FRT/REAR MGP

from

$216.99

This differential ring and pinion directly replaces the original equipment on specific vehicle years, makes and models.

Product Features:

Direct replacement – this ring and pinion set matches the fit and function of the original components on certain vehicle applications
Effective fix – eliminates grinding and whining from failed original bearings
Thoroughly tested – vehicle try-on testing and rigorous quality control measures ensure longevity
Trustworthy quality – backed by team of designers and engineers in the United States

from

$8.49

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Unsurpassed quality you can trust
Validated for fit, form and function
Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

from

$8.29

Product Features:

Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
Dana engineering-approved for fit, form and function
Meets or exceeds OE specifications

from

$12.49

Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the No. 1 ATF product, suitable for use in 95% of vehicles. And now, it’s recommended for most belt & chain-driven continuously variable transmissions (CVT). Featuring advanced additives to prevent the major causes of transmission breakdown, it’s designed to help prevent leaks, reduce wear & tear, and maximize performance. Has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Valv MaxLife Multi-Vehicle ATF is suitable for most Ford, GM, Toyota, Honda, Nissan, Hyundai, Subaru, BMW, Mercedes, Volvo, VW & Audi vehicles. Recommended for use in: GM DEXRON-II, DEXRON-III, DEXRON-VI, and DEX-CVT; Ford MERCON LV; Toyota/Lexus Type T, T-II, T-IV, WS, CVTF FE, and CVTF TC; Honda/Acura ATF-Z1 and Honda CVT; Nissan/Infiniti Matic-D, Matic-J, Matic-K and Matic-S; Hyundai/Kia SP-II, SP-III, SP-IV and SPH-IV; BMW 7045E, ETL 8072B, LA2634 and LT71141; Allison C-4; Mercedes-Benz NAG-1; Volvo 1161521, 1161540, 97340 and 1273.41; Subaru ATF HP, Lineartronic chain CVT and CVT-II, Lineartronic High Torque CVT, and CV-30; and VW/Audi G-052-025-A2 and G-052-162-A1. CURRENTLY UNABLE TO SHIP THIS PRODUCT TO CUSTOMERS LOCATED IN CALIFORNIA

Product Features:

FOR USE IN 95% OF VEHICLES INCLUDING MOST CVTs in operation with US registered light duty applications
HIGH PERFORMANCE CONDITIONING AGENTS prolong seal elasticity to prevent leaks
IMPROVED DURABILITY & TRANSMISSION LIFE with anti-wear technology to avoid costly repairs
ENHANCED HIGH & LOW TEMP PERFORMANCE supports transmission fluid in all weather situations

from

$6.99

With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.

Product Features:

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

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

from

$480.99

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!

from

$53.99

Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.

Product Features:

GM12 BOLT CAR SOLID SPACER & SHIMS

from

$2.99

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

Product Features:

Meets or exceeds OE specifications

from

$2.99

Product Features:

RING GEAR BOLT 8.5″ 7.5″ 7/16 X 20 LEFT HAND

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$47.99

The tremendous shock loads generated at launch by most any drag racing vehicle equipped with todays 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
3/8″-24 RH Thread Size
0.8″ Underhead Length
200,000 PSI

Popular 1978 Oldsmobile 98 Differentials Categories

Differential Oil

Rear Differential Cover Gaskets

Differential Pinion Shaft Lock Bolts

Differential Bearings

Differential Axle Shafts

Differential Pinion Pilot Bearings

Differential Bearing Kits

Front Differential Pinion Bearings

Differential Carrier Shim Kits

Differential Pinion Seals

Differential Mini Spools

Differential Ring and Pinions

Differential Lock Assemblies

Differential Spools

Rear Housing Cover Gaskets

Complete Differentials

Differential Ring Gear Bolts

Differential Crush Sleeves

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Gear Install Kits

Differential Carrier Bearing Races

Most Popular Rear Housing Cover Gaskets for 1978 Oldsmobile 98s

Enhance your 1978 Oldsmobile 98 with one of the 2 Rear Housing Cover Gaskets we have in stock, starting at just $8.29.

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$8.49

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Unsurpassed quality you can trust
Validated for fit, form and function
Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

from

$8.29

Product Features:

Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.
Dana engineering-approved for fit, form and function
Meets or exceeds OE specifications

Best-Selling 1978 Oldsmobile 98 Differential Pinion Seals

Upgrade your 98 with one of our 2 best-selling Differential Pinion Seals.

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from

$19.99

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

from

$9.99

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

Top-Quality Rear Differential Cover Gaskets for 1978 Oldsmobile 98s

Choose a high-quality OEM or aftermarket Rear Differential Cover Gasket for Oldsmobile 98s and enjoy top-notch performance from $8.99.

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from

$8.99

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

from

$21.49

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. Fits 1964-1970 Chevrolet 8.2 inch 10 bolt & 1970-1981 GM 8.5 inch ring gear

Product Features:

.047″ thick cellulose/nitrile composite gasket material
Precision die cut
Reusable

from

$10.99

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Unsurpassed quality you can trust
Validated for fit, form and function
Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes

Our Top Pick for a 1978 Oldsmobile 98 Differential Oil

Invest in a durable Differential Oil for your 1978 Oldsmobile, knowing you’re getting trusted brands and expert craftsmanship.

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from

$12.49

FOR USE IN 95% OF VEHICLES INCLUDING MOST CVTs in operation with US registered light duty applications
HIGH PERFORMANCE CONDITIONING AGENTS prolong seal elasticity to prevent leaks
IMPROVED DURABILITY & TRANSMISSION LIFE with anti-wear technology to avoid costly repairs
ENHANCED HIGH & LOW TEMP PERFORMANCE supports transmission fluid in all weather situations

Top-Rated Differential Bearings for 1978 Oldsmobile 98s

Make a smart move for your 1978 Oldsmobile 98 with products all priced from $10.99 to $30.99.

show more show less

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

from

$11.99

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

from

$27.99

Manufactured with premium-grade steel, National taper bearing sets feature crowned raceways and rollers to ensure even load distribution.

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

from

$21.99

Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.

Product Features:

PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION – Crowned raceways and rollers for even load distribution
OE-STYLE DESIGN – Engineered to meet OE specifications
COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on

from

$30.99

We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.

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

from

$10.99

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

Top-Rated Differential Brands For Your 1978 Oldsmobile 98

When it comes to finding the perfect Differential for your 1978 Oldsmobile 98, 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 Felpro, National, and Motive Gear, and more, all known for their exceptional customer ratings (average brand rating of 4.6 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 1978 Oldsmobile 98, providing peace of mind with parts that meet or exceed OEM standards.

Popular Felpro 1978 Oldsmobile 98 Differentials

If you’re looking for a top-quality Differential for your 1978 Oldsmobile 98, Advance Auto Parts has exactly what you need with our selection of Felpro Differentials. We have 3 Felpro Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $8.49 and an average cost of $9.49, you’ll find the perfect Differential for your needs and budget. Felpro Differentials for the 1978 Oldsmobile 98 come highly rated, with over 247 customer reviews and an impressive average rating of 4.6 stars. Choosing a Felpro Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

from $10.99

(195)

Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket

“Worked as described”

from $8.99

(45)

Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket

“A1+”

from $8.49

(7)

Axle Housing Cover Gasket Oval Shaped 12 Bolt Hole Gasket

“good”

Top-Quality National 1978 Oldsmobile 98 Differentials

For those in search of a high-quality Differential for their 1978 Oldsmobile 98, 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 $11.99, with an average price of $23.66, giving you a range of options to suit your budget. Backed by over 28 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.

from $11.99

(2)

Bearing Race

“Reasonable price and woks well. front diff 2006 Escalade esv”

from $41.99

(1)

Shaft Repair Sleeve

“Very delicate piece, but came shipped quite safely and not damaged. High quality.”

from $16.99

(25)

Multi-Purpose Bearing

“Smooth”

FAQs for 1978 Oldsmobile 98 Differentials

What are the best-selling Differentials for 1978 Oldsmobile 98s?

Out of 105 Differentials that fit 1978 Oldsmobile 98s, the following parts are the top sellers:

Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket (5185823) – $10.99
Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (5782376) – $8.99
Multi-Purpose Bearing (3275973) – $16.99

What’s the price range for 1978 Oldsmobile 98 Differentials?

The prices of Differentials for the 1978 Oldsmobile 98 range from $2.79 up to $551.99 for the most premium parts.

What is the average price of a Differential for a 1978 Oldsmobile 98?

The average price for Differentials for the 1978 Oldsmobile 98 is $166.96. 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 Oldsmobile 98 model years?

Yes, we carry Differentials for 38 model years of Oldsmobile 98s between 1957 and 1996. The following model years are the most popular for Differential purchases: 1996, 1995, 1994, 1993, 1992, 1991, 1990, 1989, and 1988.

What are the cheapest Differentials for my 1978 Oldsmobile 98?

The cheapest 1978 Oldsmobile 98 Differentials we carry are:

Differential Crush Sleeve (10715252) – $2.79
Ring Gear Bolt (20520168) – $2.99
Pinion Crush Sleeves (22140005) – $5.99
Differential Shaft Lock Bolt (5707714) – $6.79
Pinion Crush Sleeves (22140004) – $6.99

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

Yes. We stock Differentials for 8 other popular 1978 Oldsmobile models. Some of the most popular are 1978 Cutlass Differentials, 1978 Cutlass Supreme Differentials, 1978 Delta 88 Differentials, 1978 Toronado Differentials, and 1978 Custom Cruiser Differentials.

What are the top-rated Differentials that fit the 1978 Oldsmobile 98?

Based on 4,576 reviews by customers, our 1978 Oldsmobile 98 Differentials have an average customer rating of 4 stars. These are the highest-rated categories of Differentials for the 1978 Oldsmobile 98 and their top-rated products:

Differential Pinion Shims
- Differential Pinion Shim Kit (20520100) – $7.99
Differential Oil
- MaxLife Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid, 1 Quart (8020023) – $12.49

What types of Differentials do you sell for my 1978 Oldsmobile 98?

As of 6/2/26, these are some of the most in-demand types of Differentials for a 1978 Oldsmobile 98:

Can I get help with 1978 Oldsmobile 98 Differential orders?

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

What is your return policy for Oldsmobile 98 Differentials?

Advance Auto Parts keeps returns simple. For new Oldsmobile 98 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.

1978 Oldsmobile 98 Differentials

Powertrax – Differential Lock Assembly (Part No.1940-LR)

Pro-King – Differential Drive Pinion Nut (Part No.740A961)

Schaeffler – Shaft Seal (Part No.SS2588)

Driveworks – Tapered Roller Bearing (Part No.S-M-802048)

Motive Gear – Differential Internal Carrier Gear Kit (Part No.GM10BI)

Yukon Gear – 1541H Alloy Rear Axle for ’80-’88 8.5" GM Caprice and Impala (Part No.21426)

Dorman – Ring and Pinion Bearing Installation Kit (Part No.697-100)

Richmond Gear – Differential Mini Spool (Part No.78-7528-1)

Dorman – Help – Pinion Crush Sleeves (Part No.81057)

Felpro – Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket (Part No.RDS 55028-1)

Motive Gear – Differential Pinion Shim Kit (Part No.1102)

Motive Gear – Differential Mini Spool (Part No.MS12C)

Driveworks – Taper Bearing Cup (Part No.S-LM-501314)

Richmond Gear – Differential Gear Install Kit (Part No.83-1019-B)

Dorman – Help – Differential Shaft Lock Bolt (Part No.81048)

Driveworks – Camshaft Seal (Part No.S-99139)

Motive Gear – Performance Differential Ring and Pinion (Part No.G885342)

Dorman – Differential Ring and Pinion Set (Part No.697-812)

Felpro – Axle Housing Cover Gasket Oval Shaped 12 Bolt Hole Gasket (Part No.RDS 55029)

Victor Reinz – Axle Housing Cover Gasket (Part No.71-14827-00)

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

Schaeffler – Cup (Part No.LM48510)

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

Powertrax – Grip LS Traction System (Part No.LS231230)

Motive Gear – Differential Pinion Bearing Spacer (Part No.4101)

Pro-King – Differential Ring Gear Bolt (Part No.742G935)

Motive Gear – Ring Gear Bolt (Part No.14066913)

ARP Auto Racing – For Use With General Motors, 0.800" Head L, 3/8" – 24 Thread Size, Chrome Moly (Part No.230-3001)

Felpro – Axle Housing Cover Gasket Oval Shaped 12 Bolt Hole Gasket (Part No.RDS 55029)

Victor Reinz – Axle Housing Cover Gasket (Part No.71-14827-00)

Schaeffler – Shaft Seal (Part No.SS2588)

Schaeffler – Shaft Seal (Part No.SS2983)

Felpro – Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket (Part No.RDS 55072)

Mr. Gasket – Differential Gasket (Part No.84B)

Felpro – Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket (Part No.RDS 55028-1)

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

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

National – Bearing Race (Part No.LM501314)

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

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

Schaeffler – Bearing – CRB (Cylindrical Roller Bearing) (Part No.FC67147)

Schaeffler – Cup (Part No.M88010)