1978 Oldsmobile Omega Differentials

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Keep Your 1978 Oldsmobile Omega 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 Omega looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Bearings, Differential Covers, and Differential Oil. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Differentials from Trusted Brands

Looking for a reliable Differential? We’ve got you covered with options from brands you know and trust like Motive Gear, National, and Driveworks. For example, Motive Gear Differentials start at just $3.99 with an average 4.1 star rating. National and Driveworks offer similar pricing and quality, backed by strong customer feedback. With over 2,106 reviews and a solid 4.2 star average, you can shop with confidence knowing other Oldsmobile Omega owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1978 Oldsmobile Omega Differential at Advance Auto Parts is around $204.56, with a range that starts at $2.79 and goes up to $1,015.00. With 242 options in stock from 13 trusted brands, finding the right fit is easy. Popular picks like Driveworks Taper Bearing Set, S-A-6, Dorman – Help Differential Shaft Lock Bolt, 81048, and Motive Gear Ring Gear Bolt, 14066913 start at just $2.99 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 Omega in peak condition, inside and out.

Essential 1978 Oldsmobile Omega Differentials

Yukon Gear – "Yukon Gear Mini Spool for GM 8.5"" with 30 Spline Axles, 32233" (Part No.32233)

"Yukon Gear Mini Spool for GM 8.5"" with 30 Spline Axles, 32233"

from

$188.99
Yukon Mini Spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier in place of the spider gears and delivers 100% power to both tires at all times. These units are not recommended for street-driven vehicles. Full spools are recommended for vehicles with large tires or high horsepower.
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Yukon Gear – Yukon Gear Ring Gear Bolt, 33049 (Part No.33049)

Yukon Gear Ring Gear Bolt, 33049

from

$6.99
“Ring gear bolt for GM 7.5″”, 7.6″”, 7.6″” IRS, 8.0″”, 8.25″” IFS, 8.5″”, 8.6″” & 8.6″” IRS. 7/16″” x 20.”
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Yukon Gear – "Yukon Gear Dana 25, 27, 30, 44, Model 20 And Model 35, GM 7.5"", 8.2"", 8.5"", 12P, 12T, C9.25 Rear Cover Bolt, 33286" (Part No.33286)

"Yukon Gear Dana 25, 27, 30, 44, Model 20 And Model 35, GM 7.5"", 8.2"", 8.5"", 12P, 12T, C9.25 Rear Cover Bolt, 33286"

from

$9.99
“5/16″”-18 cover bolt, Dana Spicer 25, 27, 30 and 44, AMC Model 20 and Model 35, Chrysler 9.25 rear, GM 7.5″”, 7.625″”, 8.2″”, 8.5″”, 12 bolt passenger car and truck.”
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Yukon Gear – "Yukon Gear Standard Open Spider Gear Kit, Early GM 7.5"", 26 Spline and Large Windows, 16048" (Part No.16048)

"Yukon Gear Standard Open Spider Gear Kit, Early GM 7.5"", 26 Spline and Large Windows, 16048"

from

$149.99
Yukon Gear & Axle spider gear kits feature higher quality materials and better manufacturing techniques than OEM to ensure a longer lasting spider gear set. Kit delivers everything needed for a complete and proper spider gear set replacement.
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Yukon Gear – "Yukon Gear Posi Spring Kit for GM 7.5"", with Preload Plates, 33206" (Part No.33206)

"Yukon Gear Posi Spring Kit for GM 7.5"", with Preload Plates, 33206"

from

$153.99
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.
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Yukon Gear – Yukon Gear Pinion Setup Bearing for Popular GM, Ford, Dana, & Chrysler Differentials, 56045 (Part No.56045)

Yukon Gear Pinion Setup Bearing for Popular GM, Ford, Dana, & Chrysler Differentials, 56045

from

$153.99
Yukon Gear & Axle offers a full line of top quality differential tools to save time and money.
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Motive Gear – Motive Gear Differential Gear Install Kit, GM8.5IK (Part No.GM8.5IK)

Motive Gear Differential Gear Install Kit, GM8.5IK

from

$65.99
Motive Gear Differential Gear Install Kit, GM8.5IK.
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Richmond Gear – Richmond Gear Differential Bearing Kit, 83-1016-1 (Part No.83-1016-1)

Richmond Gear Differential Bearing Kit, 83-1016-1

from

$182.99
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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Yukon Gear – "Yukon Gear 7.2"" GM 7.5"" GM & 8.2"" GM Pinion Seal, 30192" (Part No.30192)

"Yukon Gear 7.2"" GM 7.5"" GM & 8.2"" GM Pinion Seal, 30192"

from

$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.
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Richmond Gear – Richmond Gear Differential Pinion Shaft, 80-0272-1 (Part No.80-0272-1)

Richmond Gear Differential Pinion Shaft, 80-0272-1

from

$66.99
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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Dorman – Dorman Axle Shaft, 630-140 (Part No.630-140)

Dorman Axle Shaft, 630-140

from

$259.99
This axle shaft is designed to match the performance of the original equipment shaft on specified vehicle makes, models and years. When a factory axle shaft fails or is damaged by rust or collision, this replacement is engineered to help restore and ensure the proper transfer of torque and rotational power from the differential or transmission to the wheel.
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Yukon Gear – "Yukon Gear Master Overhaul Kit for ’81 and Older GM 7.5"" Differential, 14076" (Part No.14076)

"Yukon Gear Master Overhaul Kit for '81 and Older GM 7.5"" Differential, 14076"

from

$289.99
Yukon Master Overhaul Kits give you all the high-quality parts you need to start and finish every differential job. Yukon offers more tailor-made kits than any other manufacturer in the industry to meet your specific installation needs. This kit uses Timken bearings and races along with high quality seals and small parts. Yukon Master Overhaul Kits are the most comprehensive and complete kits on the market because Yukon does extensive research to ensure that every kit has everything you need for your application.
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Pro-King – Pro-King Differential Cover Plug, 742G484 (Part No.742G484)

Pro-King Differential Cover Plug, 742G484

from

$6.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Yukon Gear – "Yukon Gear Yoke for GM 7.5"" and 7.625"" (Mech 3R) In A Triple Lip Design, 41088" (Part No.41088)

"Yukon Gear Yoke for GM 7.5"" and 7.625"" (Mech 3R) In A Triple Lip Design, 41088"

from

$154.99
Yukon Gear and Axle manufactures a complete line of general replacement and performance series of pinion yokes for many street, racing, and heavy-duty off-road applications.
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Richmond Gear – Richmond Gear RngPnn, 69-0322-1 (Part No.69-0322-1)

Richmond Gear RngPnn, 69-0322-1

from

$350.99
Richmond Gear RngPnn, 69-0322-1. DRIVELINE – TRANSMISSION PARTS>DIFFERENTIAL PARTS>RING AND PINION KITS>RING AND PINION KITS from Richmond Gear
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Yukon Gear – "Yukon Gear Clutch Guide for GM 7.5"" & 7.6"" Dura Grip, 33251" (Part No.33251)

"Yukon Gear Clutch Guide for GM 7.5"" & 7.6"" Dura Grip, 33251"

from

$10.99
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.
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Yukon Gear – "Yukon Gear Crush Sleeve Eliminator Kit for GM 8.5"" & Chrysler 9.25"", 55048" (Part No.55048)

"Yukon Gear Crush Sleeve Eliminator Kit for GM 8.5"" & Chrysler 9.25"", 55048"

from

$57.99
Yukon shim kits are precision machined and tailored for each individual application to ensure you have the right shims for every set up.
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Motive Gear – Motive Gear Differential Pinion Nut, 1260823 (Part No.1260823)

Motive Gear Differential Pinion Nut, 1260823

from

$10.99
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.
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Yukon Gear – Yukon Gear Bearing Race Driver for Popular Ford, Gm, Chrysler, and Dana Differentials, 56017 (Part No.56017)

Yukon Gear Bearing Race Driver for Popular Ford, Gm, Chrysler, and Dana Differentials, 56017

from

$215.99
Yukon Gear & Axle offers a full line of top quality differential tools to save time and money.
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Powertrax – Powertrax Differential Lock Assembly, 9207853005 (Part No.9207853005)

Powertrax Differential Lock Assembly, 9207853005

from

$544.99
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.
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Yukon Gear – "Yukon Gear Dura Grip Spider Gear Set for GM 8.5"" Differential with 28 Spline Axles, 16052" (Part No.16052)

"Yukon Gear Dura Grip Spider Gear Set for GM 8.5"" Differential with 28 Spline Axles, 16052"

from

$336.99
Yukon Gear & Axle spider gear kits utilize the highest quality materials and best production techniques in the industry to ensure a longer lasting spider gear set. Kit delivers everything needed for a complete and proper spider gear set replacement.
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Yukon Gear – "Yukon Gear 8.5"" & 8.2"" GM carrier installation kit, 57008" (Part No.57008)

"Yukon Gear 8.5"" & 8.2"" GM carrier installation kit, 57008"

from

$109.99
Yukon Carrier Installation Kits are a convenient and low-cost solution for carrier changes in cases where one is upgrading to a positraction limited slip differential, a mechanical locker, or an air operated locker. These kits contain carrier bearings and races and a carrier shim kit.
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Yukon Gear – "Yukon Gear Redi Sleeve for GM 8.5"", 9.5"" & 8.2"" BOP Yokes, 30229" (Part No.30229)

"Yukon Gear Redi Sleeve for GM 8.5"", 9.5"" & 8.2"" BOP Yokes, 30229"

from

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

Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 55072

from

$9.49
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.
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Yukon Gear – "Yukon Gear Ltd. Slip Clutch Guide, Chry 9.25/Dana 44/50/GM 12 Bolt/8.2""/8.5""/8.6""/Nis M226, 33352" (Part No.33352)

"Yukon Gear Ltd. Slip Clutch Guide, Chry 9.25/Dana 44/50/GM 12 Bolt/8.2""/8.5""/8.6""/Nis M226, 33352"

from

$8.99
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.
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Yukon Gear – "Yukon Gear Pinion Depth Shim Kit for Toyota8"", GM 7.5"", 8.2"" & 12 Bolt Truck, 55064" (Part No.55064)

"Yukon Gear Pinion Depth Shim Kit for Toyota8"", GM 7.5"", 8.2"" & 12 Bolt Truck, 55064"

from

$39.99
Yukon shim kits are precision machined and tailored for each individual application to ensure you have the right shims for every set up.
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Powertrax – Powertrax Differential Lock Assembly, 1930-LR (Part No.1930-LR)

Powertrax Differential Lock Assembly, 1930-LR

from

$445.99
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.
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Yukon Gear – "Yukon Gear Chrome Moly Cross Pin Shaft for Mini-Spool for 8.5"" GM, 32238" (Part No.32238)

"Yukon Gear Chrome Moly Cross Pin Shaft for Mini-Spool for 8.5"" GM, 32238"

from

$61.99
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 other general maintenance items. You can count on Yukon to fulfill all your differential small parts needs.
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Most Popular Differential Bearing for 1978 Oldsmobile Omegas

Enhance your 1978 Oldsmobile Omega with this popular Differential Bearing we have in stock, for $141.99.

Driveworks – Driveworks Wheel Bearing Kit, S-RA-321 (Part No.S-RA-321)

Driveworks Wheel Bearing Kit, S-RA-321

from

$141.99
Driveworks Wheel Bearing Kit, S-RA-321.
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Best-Selling 1978 Oldsmobile Omega Differential Covers

Upgrade your Omega with one of our 6 best-selling Differential Covers.

Yukon Gear – "Yukon Gear Chrome Cover for 8.6"", 8.5"" and 8.2"" GM Rear, 32017" (Part No.32017)

"Yukon Gear Chrome Cover for 8.6"", 8.5"" and 8.2"" GM Rear, 32017"

from

$74.99
These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design finished in chrome.
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Yukon Gear – "Yukon Gear Polished Aluminum Cover for 8.6"", 8.2"" and 8.5"" GM Rear, 32030" (Part No.32030)

"Yukon Gear Polished Aluminum Cover for 8.6"", 8.2"" and 8.5"" GM Rear, 32030"

from

$255.99
These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design made from aluminum and polished to perfection.
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Yukon Gear – "Yukon Gear Steel Cover for GM 8.2"" & 8.5"" Rear, 32332" (Part No.32332)

"Yukon Gear Steel Cover for GM 8.2"" & 8.5"" Rear, 32332"

from

$123.99
These Yukon replacement diff covers are a direct bolt-on.
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Yukon Gear – "Yukon Gear Steel Cover for GM 7.5"" & 7.625"", 32331" (Part No.32331)

"Yukon Gear Steel Cover for GM 7.5"" & 7.625"", 32331"

from

$67.99
These Yukon replacement diff covers are a direct bolt-on.
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Yukon Gear – "Yukon Gear Chrome Cover for 7.5"" GM, 32014" (Part No.32014)

"Yukon Gear Chrome Cover for 7.5"" GM, 32014"

from

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

Pro-King Differential Carrier Cover, 741A758

from

$29.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Top-Quality Differential Oil for 1978 Oldsmobile Omegas

Choose a high-quality OEM or aftermarket Differential Oil for Oldsmobile Omegas and enjoy top-notch performance from $35.99.

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

Yukon Gear 3 Qt - Penzoil 80W90 Conventional Gear Oil, 15002

from

$44.99
Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.
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Yukon Gear – "Yukon Gear Redline Synthetic ""Shock Proof"" Oil – 4 Quarts, 15004" (Part No.15004)

"Yukon Gear Redline Synthetic ""Shock Proof"" Oil - 4 Quarts, 15004"

from

$137.99
Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.
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Valvoline – Valvoline Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid 1 GA, 904891 (Part No.904891)

Valvoline Multi-Vehicle (ATF) Full Synthetic Automatic Transmission Fluid 1 GA, 904891

from

$35.99
Choosing an automatic transmission fluid just got easier. Valvoline Full Synthetic MaxLife Multi-Vehicle ATF, the #1 ATF product, is suitable for use in 95% of ATF vehicles in operation with US registered light duty applications. And now, it€™s also recommended for most belt and 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 and tear, and maximize performance €“ all for much longer than conventional fluids. It has improved thermal stability for longer fluid life, better viscosity stability for consistent transmission operation, and frictional enhancements for smooth gear engagements. Whether your vehicle has a CVT or traditional automatic, Valvoline MaxLife Multi-Vehicle ATF is suitable for a broad range of transmissions including Ford, GM, Toyota, Honda, Nissan, Hyundai, Subaru, BMW, Mercedes, Volvo, VW and Audi vehicles. It€™s specifically recommended for use in the following applications: 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. For the many miles ahead, trust your transmission with Valvoline, the #1 automatic transmission fluid brand.
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Top Picks for 1978 Oldsmobile Omega Differential Pinion Seals

Invest in one of our 7 durable Differential Pinion Seals for your 1978 Oldsmobile, knowing you’re getting trusted brands and expert craftsmanship.

Driveworks – Driveworks Oil Seal, S-2043 (Part No.S-2043)

Driveworks Oil Seal, S-2043

from

$10.79
Value-priced seal meets all cataloged application requirements.
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Motive Gear – Motive Gear Differential Pinion Seal, 2043 (Part No.2043)

Motive Gear Differential Pinion Seal, 2043

from

$3.99
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.
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National – National Multi-Purpose Seal, 8610 (Part No.8610)

National Multi-Purpose Seal, 8610

from

$18.29
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
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Driveworks – Driveworks Oil Seal, S-8610 (Part No.S-8610)

Driveworks Oil Seal, S-8610

from

$11.99
Value-priced seal meets all cataloged application requirements.
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Yukon Gear – "Yukon Gear 7.2"" GM 7.5"" GM & 8.2"" GM Pinion Seal, 30192" (Part No.30192)

"Yukon Gear 7.2"" GM 7.5"" GM & 8.2"" GM Pinion Seal, 30192"

from

$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.
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Schaeffler – Schaeffler Shaft Seal, SS2588 (Part No.SS2588)

Schaeffler Shaft Seal, SS2588

from

$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.
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Schaeffler – Schaeffler Shaft Seal, SS2983 (Part No.SS2983)

Schaeffler Shaft Seal, SS2983

from

$9.99
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.
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Top-Rated Rear Differential Cover Gaskets for 1978 Oldsmobile Omegas

Make a smart move for your 1978 Oldsmobile Omega with products all priced from $9.49 to $22.19.

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

Felpro Axle Housing Cover Gasket Irregular Shaped 10 Bolt Hole Gasket, RDS 55072

from

$9.49
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.
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Mr. Gasket – Mr. Gasket Differential Cover Gasket, 84B (Part No.84B)

Mr. Gasket Differential Cover Gasket, 84B

from

$22.19
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.
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Felpro – Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1 (Part No.RDS 55028-1)

Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55028-1

from

$11.99
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.
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Yukon Gear – Yukon Gear 7.5 GM Cover Gasket, 23018 (Part No.23018)

Yukon Gear 7.5 GM Cover Gasket, 23018

from

$11.99
7.5 GM cover gasket. EXTERNAL SUPPLY>FDO>BACK ROOM-FDO>APPLICATION SPECIFIC from Yukon Gear
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Top-Rated Differential Brands For Your 1978 Oldsmobile Omega

When it comes to finding the perfect Differential for your 1978 Oldsmobile Omega, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 13 trusted brands. We carry the most popular Differential brands including National, Driveworks, and Motive Gear, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $3.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1978 Oldsmobile Omega, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 1978 Oldsmobile Omega Differentials

If you’re looking for a top-quality Differential for your 1978 Oldsmobile Omega, Advance Auto Parts has exactly what you need with our selection of National Differentials. We have 3 National Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $11.99 and an average cost of $18.59, you’ll find the perfect Differential for your needs and budget. National Differentials for the 1978 Oldsmobile Omega come highly rated, with over 7 customer reviews and an impressive average rating of 4.3 stars. Choosing a National Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
National Multi-Purpose Seal, 8610
from $18.29
(4)
National Multi-Purpose Seal, 8610
“Perfect”
National Bearing Race, LM501314
from $11.99
(2)
National Bearing Race, LM501314
“good quality & price”
National Tapered Roller Bearing Cone, HM89449
from $25.49
(1)
National Tapered Roller Bearing Cone, HM89449
“This Is The One That Fit My 1971 CHEVY TRUCK 12 BOLT PINION REAR BACK BEARING”

Top-Quality Driveworks 1978 Oldsmobile Omega Differentials

For those in search of a high-quality Differential for their 1978 Oldsmobile Omega, Advance Auto Parts offers a great selection of Driveworks Differentials. With 2 Driveworks Differentials in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Differentials start at just $10.79, with an average price of $11.39, giving you a range of options to suit your budget. Backed by over 39 customer ratings and an average rating of 4.2 stars, Driveworks Differentials provide both reliability and excellent performance. Choosing a Driveworks Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Driveworks Oil Seal, S-2043
from $10.79
(1)
Driveworks Oil Seal, S-2043
“Didn’t fit my 1992 K1500 10 bolt 8.5″ ring gear rear end. Was told wrong part.”
Driveworks Taper Bearing Set, S-A-6
from $11.99
(38)
Driveworks Taper Bearing Set, S-A-6
“HELPFUL ASSOCIATE”

FAQs for 1978 Oldsmobile Omega Differentials

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

Out of 242 Differentials that fit 1978 Oldsmobile Omegas, the following parts are the top sellers:

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

The prices of Differentials for the 1978 Oldsmobile Omega 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 Omega?

The average price for Differentials for the 1978 Oldsmobile Omega is $204.56. 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 Omega model years?

Yes, we carry Differentials for 10 model years of Oldsmobile Omegas between 1973 and 1984. The following model years are the most popular for Differential purchases: 1984, 1983, 1982, 1981, 1980, 1979, 1977, 1976, and 1975.

What are the cheapest Differentials for my 1978 Oldsmobile Omega?

The cheapest 1978 Oldsmobile Omega Differentials we carry are:

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 98 Differentials, 1978 Delta 88 Differentials, and 1978 Toronado Differentials.

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

As of 8/2/26, these are some of the most in-demand types of Differentials for a 1978 Oldsmobile Omega:

Can I get help with 1978 Oldsmobile Omega 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 Omega Differentials?

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