1978 Oldsmobile Cutlass Differentials

Name: Standard Open Side Gear Thrust Washer for 8.5" GM
Brand: Yukon Gear
SKU: 33304
Price: 15.99 USD

Please Select your Vehicle to See Exact Fit Parts

Keep Your 1978 Oldsmobile Cutlass 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 Cutlass looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Oil, Differential Bearings, 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 2,686 reviews and a solid 4 star average, you can shop with confidence knowing other Oldsmobile Cutlass owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1978 Oldsmobile Cutlass Differential at Advance Auto Parts is around $192.81, with a range that starts at $2.79 and goes up to $1,015.00. With 149 options in stock from 14 trusted brands, finding the right fit is easy. Popular picks like Multi-Purpose Bearing, 3 Qt – 80W90 Conventional Gear Oil with Posi Additive, and Differential Shaft Lock Bolt start at just $6.79 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 Cutlass in peak condition, inside and out.

Looking for the perfect Differential for your 1978 Oldsmobile Cutlass? 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 Cutlass. Whether you’re driving a 1978 model or another popular model year like 1979, 1980, 1981, 1982, 1983, 1988, 1997, 1998, and 1999, 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 Cutlass Differentials

from

$15.99

Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.

Product Features:

Side gear thrust washer
Fits GM 8.5″

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$551.99

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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$373.99

This Yukon Gear & Axle clutch kit is a direct replacement for the popular Yukon Dura Grip positraction unit.

Product Features:

Fits Ford 8.8″, 1963-1979 Corvette, GM 12 bolt passenger car and truck, 8.2″, 8.5″ and 8.6″ differentials
Dura Grip composite replacement clutches
14 piece kit
Composite clutches

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$59.99

Yukon shim kits are precision machined and tailored for each individual application to ensure you have the right shims for every set up.

Product Features:

Super carrier shim kit for Ford 7.5″, GM 7.5″, 7.625″, 7.6″ IFS, 7.6″ IRS, 7.75″, 8.2″, 8.2″ Buick, Oldsmobile and Pontiac and GM 8.5″ front and rear
Interlocking design makes installation much easier

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$282.99

Yukon Pinion Installation Kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings and races can be reused. This kit features Timken bearings and races along with high-quality seals and small parts. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your gear set.

Product Features:

Fits 8.2″ Buick, Oldsmobile and Pontiac
Included are pinion bearings and races, pinion seal, crush sleeve, complete pinion shim kit, and marking compound with brush.

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$368.99

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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$9.99

Yukon Mighty Seals use the latest design and manufacturing technologies to produce a precision fit that seals tight and lasts for years to come.

Product Features:

Pinion seal
Fits GM 8.5″ rear, 8.2″ and 8.2″ in Buick, Oldsmobile and Pontiac

from

$84.99

Cross pin shaft
Fits GM 7.5″
Notched
Not compatible with Spartan Lockers or Lock Rights

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$57.99

Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials. This kit includes three quarts of oil and a bottle of Yukon Limited Slip Friction modifier that reduces noise and chatter in clutch driven positraction units and limited slip differentials.

Product Features:

Includes three quarts of conventional oil and one 4oz bottle of Yukon positraction additive

from

$513.99

RngPnn

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$24.99

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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$214.99

Yukon 35 spline (outside spline) male coupler for 9″ Ford. All Yukon yokes come with a Limited warranty against manufacturing defects.

Product Features:

Spider gear kit
Fits GM 8.5″ 30 spline open differential
Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.

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$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

$289.99

If you’re repairing or rebuilding a front or rear differential and want the best performance and longevity from the bearings being replaced, choose this premium differential kit. It includes high-precision bearings manufactured to tighter tolerances and engineered to last longer than common lower-grade bearings that have more backlash when subjected to the torque generated within the differential. This convenient kit also saves the time needed to source individual components. Check the product attributes and fitment details to select the correct premium differential kit for your application.

Product Features:

Ideal solution – this premium differential bearing kit features high-precision bearings to help ensure longer bearing life, prevent backlash, and restore proper differential operation
Direct replacement – the components in this all-in-one kit are engineered to precisely match the fit and function of the original equipment bearings for a seamless installation
Increased reliability – the premium bearings in this kit are manufactured to exacting tolerances and specifications from high quality materials to help ensure optimal performance
Application-specific – check the product attributes and fitment details to choose the correct kit for your application
Contents: Bearings; Shims; Crush Collar; Hardware; Gasket Material; Gear Marking Compound; Application Brush; Thread Lock Compound

from

$7.99

Differential Cover B

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$57.99

Yukon Mighty Seals use the latest design and manufacturing technologies to produce a precision fit that seals tight and lasts for years to come.

Product Features:

Pinion Redi-sleeve
Fits GM 8.5″, 9.5″ and 8.2″ Buick, Oldsmobile and Pontiac

from

$115.99

8.5″ GM PINION KIT .

Product Features:

Fits GM 8.5″ rear
Uses Koyo bearings and races
Included are pinion bearings and races, pinion seal, pinion nut, crush sleeve, marking compound and brush.

from

$153.99

Positraction spring kit
Fits GM 7.5″ and 7.625″ Dura Grip
Includes preload plates

from

$14.99

Pinion nut washer for GM 7.2″ IFS, 7.5″, 7.625″, 7.6″ IFS, 8.5″, 8.6″ and 9.5″.

from

$5.99

Product Features:

CRUSH SLEEVE 12 BLT CAR

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$24.99

This direct replacement differential cover matches the fit and function of the original equipment diff cover for a reliable, leak-free repair. It features a durable design, made to strict specifications, to help ensure reliable service life.

Product Features:

Direct replacement – this differential cover matches the fit and function of the original equipment diff cover on select vehicles
Reliable repair – the smart solution for fixing an existing cover that’s rusted, damaged or leaking differential fluid
Durable construction – this differential cover is made according to strict engineering standards to help ensure dependability
Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

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$2.99

Product Features:

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

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$98.99

Motive Gear Mini-Spools replace your stock spider and side gears with a solid billet mini-spool for 100% traction to both wheels. Not recommended for street applications.

Product Features:

Billet construction
Not recommended for street applications

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$124.99

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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$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

$10.99

Clutch guide
Fits GM 7.5″ and 7.625″ Dura Grip

from

$19.99

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

Product Features:

Meets or exceeds OE specifications

from

$9.99

Pinion nut for GM 7.2″, 7.5″, 7.625″, 8.0″, 8.25″ IFS, 8.5″, 8.6″, 9.25″ IFS and 9.5″
7/8″ x 14 thread
1 1/4″ socket

Popular 1978 Oldsmobile Cutlass Differentials Categories

Differential Oil

Rear Differential Cover Gaskets

Differential Open Unit and Components

Differential Covers

Differential Pinion Shaft Lock Bolts

Differential Bearings

Differential Axle Shafts

Differential Pinion Pilot Bearings

Differential Cover Bolts

Differential Carriers

Differential Bearing Kits

Front Differential Pinion Bearings

Differential Spider Gear Kits

Differential Rebuild Kits

Differential Carrier Shim Kits

Differential Pinion Seals

Differential Clutch Packs

Differential Mini Spools

Differential Ring and Pinions

Differential End Yokes

Differential Lock Assemblies

Differential Spools

Differential Carrier Bearings

Differential Lock Springs

Differential Pinion Bearing Kits

Complete Differentials

Differential Ring Gear Bolts

Bearing Race Drivers

Differential Carrier Bearing Shims

Differential Crush Sleeves

Differential Side Bearing Spacers

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Gear Install Kits

Differential Cross Pins

Differential Side Gear Thrust Washers

Differential Pinion Gear Thrust Washers

Differential Carrier Bearing Races

Differential Clutch Pack Clips

Most Popular Differential Oil for 1978 Oldsmobile Cutlasses

Enhance your 1978 Oldsmobile Cutlass with one of the 6 Differential Oil we have in stock, starting at just $12.49.

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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

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$57.99

Includes three quarts of conventional oil and one 4oz bottle of Yukon positraction additive

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$44.99

Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.

Product Features:

Includes three quarts of conventional oil

from

$148.99

Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection. This kit includes four quarts of oil and a bottle of Yukon Limited Slip Friction modifier that reduces noise and chatter in clutch driven positraction units and limited slip differentials.

Product Features:

Includes four quarts of Redline Shockproof oil and one 4oz bottle of Yukon positraction additive

from

$99.99

Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.

Product Features:

Includes three quarts of Redline Shockproof oil

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$137.99

Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.

Product Features:

Includes four quarts of Redline Shockproof oil

Best-Selling 1978 Oldsmobile Cutlass Differential Bearings

Upgrade your Cutlass with one of our 5 best-selling Differential Bearings, earning an average 4.33 stars rating across 29 reviews.

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$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

$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

$6.99

Cross pin bolt for Chrysler 8.25″ and 9.25″ rear, Ford 7.5″ and 8.8″, GM 12 bolt car and truck, 8.5″, 8.25″ IFS, 8.0″, 7.625″, 7.5″ and 7.2″ IFS

Top-Quality Rear Differential Cover Gaskets for 1978 Oldsmobile Cutlasses

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

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from

$8.99

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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$11.99

7.5 GM cover gasket.

Product Features:

Cover gasket
Fits GM 7.5″ and 7.625″

Top Picks for 1978 Oldsmobile Cutlass Differential Covers

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

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from

$67.99

These Yukon replacement diff covers are a direct bolt-on.

Product Features:

Fits GM 7.5″ and 7.625″
Steel

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$67.99

These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design finished in chrome.

Product Features:

Fits GM 7.5″ and 7.625″
Chrome

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$29.99

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

Product Features:

Meets or exceeds OE specifications

Differential Pinion Seals for 1978 Oldsmobile Cutlasses

Make a smart move for your 1978 Oldsmobile Cutlass with products all priced from $9.99 to $19.99.

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$9.99

Yukon Mighty Seals use the latest design and manufacturing technologies to produce a precision fit that seals tight and lasts for years to come.

Product Features:

Pinion seal
Fits GM 7.2″ IFS, 1999 and down GM 7.5″ and 7.625″ and GM 8.2″
2.660″ O.D.

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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

Top-Rated Differential Brands For Your 1978 Oldsmobile Cutlass

When it comes to finding the perfect Differential for your 1978 Oldsmobile Cutlass, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 14 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 $8.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1978 Oldsmobile Cutlass, providing peace of mind with parts that meet or exceed OEM standards.

Popular Felpro 1978 Oldsmobile Cutlass Differentials

If you’re looking for a top-quality Differential for your 1978 Oldsmobile Cutlass, Advance Auto Parts has exactly what you need with our selection of Felpro Differentials. We have 1 Felpro Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $8.99, you’ll find the perfect Differential for your needs and budget. Felpro Differentials for the 1978 Oldsmobile Cutlass come highly rated, with over 45 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 $8.99

(45)

Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket

“A1+”

Top-Quality National 1978 Oldsmobile Cutlass Differentials

For those in search of a high-quality Differential for their 1978 Oldsmobile Cutlass, 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 $41.99

(1)

Shaft Repair Sleeve

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

from $11.99

(2)

Bearing Race

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

from $16.99

(25)

Multi-Purpose Bearing

“Smooth”

FAQs for 1978 Oldsmobile Cutlass Differentials

What are the best-selling Differentials for 1978 Oldsmobile Cutlasses?

Out of 149 Differentials that fit 1978 Oldsmobile Cutlasses, the following parts are the top sellers:

Multi-Purpose Bearing (3275973) – $16.99
3 Qt – 80W90 Conventional Gear Oil with Posi Additive (11645418) – $57.99
Differential Shaft Lock Bolt (5707714) – $6.79

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

The prices of Differentials for the 1978 Oldsmobile Cutlass range from $2.79 up to $1,015.00 for the most premium parts.

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

The average price for Differentials for the 1978 Oldsmobile Cutlass is $192.81. 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 Cutlass model years?

Yes, we carry Differentials for 25 model years of Oldsmobile Cutlasses between 1961 and 1999. The following model years are the most popular for Differential purchases: 1999, 1998, 1997, 1988, 1983, 1982, 1981, 1980, and 1979.

What are the cheapest Differentials for my 1978 Oldsmobile Cutlass?

The cheapest 1978 Oldsmobile Cutlass Differentials we carry are:

Differential Crush Sleeve (10715252) – $2.79
Ring Gear Bolt (20520168) – $2.99
Differential Cross Shaft (10282201) – $2.99
Differential Cover Bolt (50333283) – $2.99
Differential Crush Sleeve (10593152) – $3.99

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 Supreme Differentials, 1978 98 Differentials, 1978 Delta 88 Differentials, 1978 Toronado Differentials, and 1978 Custom Cruiser Differentials.

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

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

Can I get help with 1978 Oldsmobile Cutlass 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 Cutlass Differentials?

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

1978 Oldsmobile Cutlass Differentials

Yukon Gear – Standard Open Side Gear Thrust Washer for 8.5" GM (Part No.33304)

Powertrax – Differential Lock Assembly (Part No.9207883005)

Yukon Gear – 14 Plate Dura Grip Comp Clutches GM 8.2"/GM 8.5"/12T/12P/Ford 8.8"/CastIronVette (Part No.16064)

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

Yukon Gear – Pinion Install Kit for GM 8.2" Diff for Buick, Pontiac, and Oldsmobile (Part No.13068)

Powertrax – Differential Lock Assembly (Part No.1921-LR)

Yukon Gear – Pinion Seal for GM 8.5", 8.2", Buick, Oldsmobile, and Pontiac (Part No.30017)

Yukon Gear – Notched Cross Pin Shaft for 7.5" GM (Part No.33435)

Yukon Gear – 3 Qt – 80W90 Conventional Gear Oil with Posi Additive (Part No.15003)

Richmond Gear – RngPnn (Part No.79-0027-1)

National – Bearing Race (Part No.HM804810)

USA Standard Gear – Differential Spider Gear Kits (Part No.39027)

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

Dorman – Premium Ring and Pinion Master Bearing and Installation Kit (Part No.797-102)

Yukon Gear – Differential Cover B (Part No.33572)

Yukon Gear – Redi Sleeve for GM 8.5", 9.5" & 8.2" BOP Yokes (Part No.30229)

USA Standard Gear – Differential Rebuild Kit (Part No.60012)

Yukon Gear – Posi Spring Kit for GM 7.5", with Preload Plates (Part No.33206)

Yukon Gear – Pinion Nut washer (Part No.33167)

Motive Gear – Differential Crush Sleeve (Part No.3954480)

Dorman – Differential Cover (Part No.697-701)

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

Motive Gear – Differential Mini Spool (Part No.MS7.5-26)

Richmond Gear – Differential Mini Spool (Part No.78-7526-1)

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

Yukon Gear – Clutch Guide for GM 7.5" & 7.6" Dura Grip (Part No.33251)

Pro-King – Differential Carrier Shim Kit (Part No.741A200)

Yukon Gear – Pinion Nut (Part No.33152)

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

Yukon Gear – 3 Qt – 80W90 Conventional Gear Oil with Posi Additive (Part No.15003)

Yukon Gear – 3 Qt – Penzoil 80W90 Conventional Gear Oil (Part No.15002)

Yukon Gear – Redline Synthetic "Shock Proof" Oil with Positraction Additive – 4 Quarts (Part No.15005)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 3 Quarts (Part No.15000)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 4 Quarts (Part No.15004)

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

National – Bearing Race (Part No.LM501314)

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

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

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

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

Yukon Gear – 7.5 GM Cover Gasket (Part No.23018)

Yukon Gear – Steel Cover for GM 7.5" & 7.625" (Part No.32331)

Yukon Gear – Chrome Cover for 7.5" GM (Part No.32014)

Pro-King – Differential Carrier Cover (Part No.741A758)

Yukon Gear – 7.2" GM 7.5" GM & 8.2" GM Pinion Seal (Part No.30192)

Schaeffler – Shaft Seal (Part No.SS2588)