1990 Cadillac Fleetwood Differentials

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Keep Your 1990 Cadillac Fleetwood in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1990 Cadillac Fleetwood looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Covers, Rear Differential Cover Gaskets, and Rear Housing 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 Motive Gear, Dorman, and National. For example, Motive Gear Differentials start at just $135.99 with an average 4.1 star rating. Dorman and National offer similar pricing and quality, backed by strong customer feedback. With over 355 reviews and a solid 4.1 star average, you can shop with confidence knowing other Cadillac Fleetwood owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1990 Cadillac Fleetwood Differential at Advance Auto Parts is around $143.51, with a range that starts at $2.99 and goes up to $463.99. With 70 options in stock from 11 trusted brands, finding the right fit is easy. Popular picks like Dorman Differential Cover, 697-701, Motive Gear Ring Gear Bolt, 14066913, and Dorman Differential Yoke including Seal and Pinion Nut, 697-500 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 1990 Cadillac Fleetwood in peak condition, inside and out.

Essential 1990 Cadillac Fleetwood Differentials

National – National Shaft Repair Sleeve, 99139 (Part No.99139)

National Shaft Repair Sleeve, 99139

from

$41.49
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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USA Standard Gear – USA Standard Gear Differential Axle Shaft, 35107 (Part No.35107)

USA Standard Gear Differential Axle Shaft, 35107

from

$161.99
Yukon Master Overhaul kits give you all the high quality parts you need to start & 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. Included in this kit are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), Thread locking compound, and marking compound with brush. Yukon’s Master Overhaul kits are the most comprehensive and complete kits on the market. They do extensive research to ensure that every kit is specially tailored to your application.
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ATP – ATP Differential Cover Kit With Internal Magnet, 111101 (Part No.111101)

ATP Differential Cover Kit With Internal Magnet, 111101

from

$35.99
Differential covers can become damaged from road debris, corrosion, or bolt/drain plug over tightening. Their job is to act as a lid keeping lubricants in place for the ring and pinion gears, bearings, and bushings. Without lubricants, the differential quickly become damaged. ATP Differential Cover Kits include a replacement gasket and are designed to fit and function just like the original part ensuring long life and durability.
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Richmond Gear – Richmond Gear Differential Pinion Shaft, CSPGM75 (Part No.CSPGM75)

Richmond Gear Differential Pinion Shaft, CSPGM75

from

$26.49
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND.
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Pro-King – Pro-King Differential Internal Nest Kit, 742G717A (Part No.742G717A)

Pro-King Differential Internal Nest Kit, 742G717A

from

$179.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Powertrax – Powertrax Grip LS Traction System, LS231230 (Part No.LS231230)

Powertrax Grip LS Traction System, LS231230

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!
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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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National – National Axle Differential Bearing & Seal Kit, RA-320 (Part No.RA-320)

National Axle Differential Bearing & Seal Kit, RA-320

from

$153.99
The National bearing & seal kit includes all the components required to complete the repair.
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National – National Tapered Roller Bearing Cone, LM104949 (Part No.LM104949)

National Tapered Roller Bearing Cone, LM104949

from

$24.29
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
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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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Felpro – Felpro Axle Housing Cover Gasket Oval Shaped 12 Bolt Hole Gasket, RDS 55029 (Part No.RDS 55029)

Felpro Axle Housing Cover Gasket Oval Shaped 12 Bolt Hole Gasket, RDS 55029

from

$8.49
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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Motive Gear – Motive Gear Differential Pinion Shim Kit, 1100 (Part No.1100)

Motive Gear Differential Pinion Shim Kit, 1100

from

$6.99
High-quality Differential Component Shim
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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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Victor Reinz – Victor Reinz Axle Housing Cover Gasket, 71-14834-00 (Part No.71-14834-00)

Victor Reinz Axle Housing Cover Gasket, 71-14834-00

from

$7.99
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.
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National – National Tapered Roller Bearing Cone, HM804846 (Part No.HM804846)

National Tapered Roller Bearing Cone, HM804846

from

$46.49
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
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Motive Gear – Motive Gear Differential Gear Install Kit, GM9.5IK (Part No.GM9.5IK)

Motive Gear Differential Gear Install Kit, GM9.5IK

from

$58.99
Motive Gear Differential Gear Install Kit, GM9.5IK.
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Pro-King – Pro-King Differential Cross Shaft, 742G930 (Part No.742G930)

Pro-King Differential Cross Shaft, 742G930

from

$2.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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Richmond Gear – Richmond Gear Differential Bearing Kit, 29-0013-1 (Part No.29-0013-1)

Richmond Gear Differential Bearing Kit, 29-0013-1

from

$58.99
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 Differential Yoke including Seal and Pinion Nut, 697-500 (Part No.697-500)

Dorman Differential Yoke including Seal and Pinion Nut, 697-500

from

$155.99
Worn or damaged differential end yoke causing driveline vibrations- This direct replacement end yoke matches the original equipment part for a trustworthy repair and reliable performance.
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Motive Gear – Motive Gear Ring Gear Bolt, 14066913 (Part No.14066913)

Motive Gear Ring Gear Bolt, 14066913

from

$2.99
Motive Gear Ring Gear Bolt, 14066913.
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Motive Gear – Motive Gear Differential Ring Gear Bolt, 14012703 (Part No.14012703)

Motive Gear Differential Ring Gear Bolt, 14012703

from

$11.49
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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Dorman – Help – Dorman – Help Pinion Crush Sleeves, 81057 (Part No.81057)

Dorman - Help Pinion Crush Sleeves, 81057

from

$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.
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Pro-King – Pro-King Differential Crush Sleeve, 742G034 (Part No.742G034)

Pro-King Differential Crush Sleeve, 742G034

from

$2.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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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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Motive Gear – Motive Gear Differential Ring and Pinion, GM10-411A (Part No.GM10-411A)

Motive Gear Differential Ring and Pinion, GM10-411A

from

$179.99
Motive Gear Differential Ring and Pinion, GM10-411A.
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Motive Gear – Motive Gear Performance Differential Ring and Pinion, G875342X (Part No.G875342X)

Motive Gear Performance Differential Ring and Pinion, G875342X

from

$236.99
Motive Gear Performance Differential Ring and Pinion, G875342X.
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Motive Gear – Motive Gear Differential Ring and Pinion, GM9.5-410 (Part No.GM9.5-410)

Motive Gear Differential Ring and Pinion, GM9.5-410

from

$374.99
Motive Gear Differential Ring and Pinion, GM9.5-410.
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Motive Gear – Motive Gear Differential Ring and Pinion, GM10-390 (Part No.GM10-390)

Motive Gear Differential Ring and Pinion, GM10-390

from

$233.99
Motive Gear Differential Ring and Pinion, GM10-390.
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Most Popular Differential Covers for 1990 Cadillac Fleetwoods

Enhance your 1990 Cadillac Fleetwood with one of the 4 Differential Covers we have in stock, starting at just $28.99.

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

Dorman Differential Cover, 697-701

from

$28.99
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.
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Dorman – Dorman Differential Cover, 697-700 (Part No.697-700)

Dorman Differential Cover, 697-700

from

$37.99
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.
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ATP – ATP Differential Cover Kit With Internal Magnet, 111102 (Part No.111102)

ATP Differential Cover Kit With Internal Magnet, 111102

from

$29.99
Differential covers can become damaged from road debris, corrosion, or bolt/drain plug over tightening. Their job is to act as a lid keeping lubricants in place for the ring and pinion gears, bearings, and bushings. Without lubricants, the differential quickly become damaged. ATP Differential Cover Kits include a replacement gasket and are designed to fit and function just like the original part ensuring long life and durability.
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ATP – ATP Differential Cover Kit With Internal Magnet, 111101 (Part No.111101)

ATP Differential Cover Kit With Internal Magnet, 111101

from

$35.99
Differential covers can become damaged from road debris, corrosion, or bolt/drain plug over tightening. Their job is to act as a lid keeping lubricants in place for the ring and pinion gears, bearings, and bushings. Without lubricants, the differential quickly become damaged. ATP Differential Cover Kits include a replacement gasket and are designed to fit and function just like the original part ensuring long life and durability.
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Best-Selling 1990 Cadillac Fleetwood Rear Differential Cover Gaskets

Upgrade your Fleetwood with one of our 2 best-selling Rear Differential Cover Gaskets, earning an average 4.5 stars rating across 215 reviews.

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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Felpro – Felpro Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket, RDS 55387 (Part No.RDS 55387)

Felpro Axle Housing Cover Gasket: Irregular Shaped 14 Bolt Hole Gasket, RDS 55387

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.
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Top-Quality Rear Housing Cover Gaskets for 1990 Cadillac Fleetwoods

Choose a high-quality OEM or aftermarket Rear Housing Cover Gasket for Cadillac Fleetwoods and enjoy top-notch performance from $7.99.

Victor Reinz – Victor Reinz Axle Housing Cover Gasket, 71-14834-00 (Part No.71-14834-00)

Victor Reinz Axle Housing Cover Gasket, 71-14834-00

from

$7.99
With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.
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Our Top Pick for a 1990 Cadillac Fleetwood Differential Oil

Invest in a durable Differential Oil for your 1990 Cadillac, knowing you’re getting trusted brands and expert craftsmanship.

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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Our Differential Bearings for 1990 Cadillac Fleetwoods

Make a smart move for your 1990 Cadillac Fleetwood with our Differential Bearing 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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Top-Rated Differential Brands For Your 1990 Cadillac Fleetwood

When it comes to finding the perfect Differential for your 1990 Cadillac Fleetwood, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 11 trusted brands. We carry the most popular Differential brands including National, Dorman, 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 $11.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1990 Cadillac Fleetwood, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 1990 Cadillac Fleetwood Differentials

If you’re looking for a top-quality Differential for your 1990 Cadillac Fleetwood, Advance Auto Parts has exactly what you need with our selection of National Differentials. We have 2 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 $26.74, you’ll find the perfect Differential for your needs and budget. National Differentials for the 1990 Cadillac Fleetwood come highly rated, with over 3 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 Bearing Race, LM501314
from $11.99
(2)
National Bearing Race, LM501314
“good quality & price”
National Shaft Repair Sleeve, 99139
from $41.49
(1)
National Shaft Repair Sleeve, 99139
“used these speedy sleeves on the front axle of my Kubota with the wheel seals,saved me from spending 15 times more on the axle’s, Thank’s”

Top-Quality Dorman 1990 Cadillac Fleetwood Differentials

For those in search of a high-quality Differential for their 1990 Cadillac Fleetwood, Advance Auto Parts offers a great selection of Dorman Differentials. With 3 Dorman 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 $28.99, with an average price of $74.32, giving you a range of options to suit your budget. Backed by over 62 customer ratings and an average rating of 4.2 stars, Dorman Differentials provide both reliability and excellent performance. Choosing a Dorman Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Dorman Differential Cover, 697-701
from $28.99
(38)
Dorman Differential Cover, 697-701
“Good”
Dorman Differential Yoke including Seal and Pinion Nut, 697-500
from $155.99
(10)
Dorman Differential Yoke including Seal and Pinion Nut, 697-500
“Will this fot 2001 jeep grand cherokee 4.0 limited with dana 35 read end”
Dorman Differential Cover, 697-700
from $37.99
(14)
Dorman Differential Cover, 697-700
“Heavy steel with the original magnet. Fits like original.. Not a cheap stamping by any means”

FAQs for 1990 Cadillac Fleetwood Differentials

What are the best-selling Differentials for 1990 Cadillac Fleetwoods?

Out of 70 Differentials that fit 1990 Cadillac Fleetwoods, the following parts are the top sellers:

What’s the price range for 1990 Cadillac Fleetwood Differentials?

The prices of Differentials for the 1990 Cadillac Fleetwood range from $2.99 up to $463.99 for the most premium parts.

What is the average price of a Differential for a 1990 Cadillac Fleetwood?

The average price for Differentials for the 1990 Cadillac Fleetwood is $143.51. 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 Cadillac Fleetwood model years?

Yes, we carry Differentials for 30 model years of Cadillac Fleetwoods between 1965 and 1996. The following model years are the most popular for Differential purchases: 1996, 1995, 1994, 1993, 1992, 1991, 1989, 1988, and 1987.

What are the cheapest Differentials for my 1990 Cadillac Fleetwood?

The cheapest 1990 Cadillac Fleetwood Differentials we carry are:

Does Advance Auto Parts sell Differentials for any other 1990 Cadillac models?

Yes. We stock Differentials for 4 other popular 1990 Cadillac models. Some of the most popular are 1990 DeVille Differentials, 1990 Eldorado Differentials, 1990 Seville Differentials, 1990 Brougham Differentials, and 1990 Allante Differentials.

What types of Differentials do you sell for my 1990 Cadillac Fleetwood?

As of 8/2/26, these are some of the most in-demand types of Differentials for a 1990 Cadillac Fleetwood:

Can I get help with 1990 Cadillac Fleetwood Differential orders?

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

What is your return policy for Cadillac Fleetwood Differentials?

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