1990 Cadillac Fleetwood Differentials

Please Select your Vehicle to See Exact Fit Parts

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 National, Dorman, and Driveworks. For example, National Differentials start at just $11.99 with an average 4.3 star rating. Dorman and Driveworks offer similar pricing and quality, backed by strong customer feedback. With over 1,251 reviews and a solid 4 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 $108.25, with a range that starts at $2.99 and goes up to $379.99. With 59 options in stock from 9 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 14 Bolt Hole Gasket, and Differential Cover 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 1990 Cadillac Fleetwood in peak condition, inside and out.

Looking for the perfect Differential for your 1990 Cadillac Fleetwood? 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 Cadillac Fleetwood. Whether you’re driving a 1990 model or another popular model year like 1987, 1988, 1989, 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 1990 Cadillac Fleetwood Differentials

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$6.99

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

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$161.99

Product Features:

30 spline
5 x 5 metric bolt pattern
30 3/8″ long
Fits GM 8.5″ in 1991-1996 Caprice

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$30.49

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

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$139.99

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.

Product Features:

Direct replacement – this differential end yoke matches the fit and construction of the original yoke
Excellent value – this replacement end yoke offers original equipment quality at a fraction of the price of dealer parts
Quality materials – this end yoke is machined from cast iron for strength and is precision machined for reliability
Validated fit – this differential end yoke has been tested to confirm accurate fit

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$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!

Product Features:

For over 80-years, the Richmond Double-Diamond logo has represented some of the highest quality gears in the racing industry. Winners Run Richmond!
The superior quality of Richmond gearsets is a result of outstanding design, world class manufacturing and an extensive testing process that is performed on all products.
Richmond performance gearsets have been winners for decades at: NHRA, NMRA, NMCA, Daytona 500, WISSOTA and U.S. Nationals.
Richmond Gear is a leading manufacturer of high performance ring and pinion gearsets and drivetrain components, backed by a two year warranty.
Engineered to perform faster and be more reliable, Richmond performance drivetrain products are the result of a continuous research and development program combined with state-of-the-art manufacturing capabilities.

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$222.99

Product Features:

GM 10BL 8.5 R/P 4.10 FRT/REAR MGP

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$7.99

High-quality Differential Component Shim

Product Features:

SHIM KIT FITS-8.25-F7.5-AMC20-GM0

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$43.99

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.

Product Features:

Designed to repair damaged, grooved or worn shafts
Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
Easy to install with removable flange and installation tool

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$35.99

DIFF COVER KIT

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$6.99

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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$31.99

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

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$44.99

3 Qt. Penzoil 80W90 conventional gear Oil.

Product Features:

Includes three quarts of conventional oil

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$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

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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

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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

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$9.29

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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$65.99

Product Features:

MINI INSTALL KIT GM 8.5 REAR

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$49.99

Product Features:

MINI INSTALL KIT GM 7.5

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$38.99

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

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$34.49

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

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$155.99

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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$179.99

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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$11.39

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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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$156.99

Product Features:

KIT BRG&SL GM 8.5″ 10 BLT MSTR NON IFS FRONT / REAR

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$141.99

Product Features:

Brand may vary by location

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$21.99

Product Features:

KIT SHIM SIDE 9.5″ GM

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$121.99

Product Features:

GM10 BOLT 8.5″ 30 SPL INTERNAL KIT 1988-1999 (OPEN)

Popular 1990 Cadillac Fleetwood Differentials Categories

Differential Oil

Rear Differential Cover Gaskets

Differential Covers

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 Cover Plugs

Differential Ring and Pinions

Differential End Yokes

Differential Carrier Bearings

Rear Housing Cover Gaskets

Differential Ring Gear Bolts

Differential Crush Sleeves

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Gear Install Kits

Differential Spider and Pinion Gear Kits

Most Popular Differential Covers for 1990 Cadillac Fleetwoods

Enhance your 1990 Cadillac Fleetwood with one of the 5 Differential Covers we have in stock, starting at just $21.99.

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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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$37.99

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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$29.99

DIFF COVER KIT

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$35.99

DIFF COVER KIT

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$21.99

Pro-King High Quality Differential Products are designed for trouble free installation and setup.

Product Features:

Meets or exceeds OE specifications

Best-Selling 1990 Cadillac Fleetwood Rear Differential Cover Gasket

Upgrade your Fleetwood with our best-selling Rear Differential Cover Gasket with a 4.5 Starts rating across 20 reviews.

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$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

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 $10.99.

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$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 1990 Cadillac Fleetwood Differential Oil

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

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$35.99

Valvoline MaxLife Multi-Vehicle ATF is a full-synthetic formulation with advanced additives to prevent the major causes of transmission breakdown and help extend transmission life. Developed to help prevent leaks, maximize transmission performance, reduce transmission wear, and maintain smooth shifting longer than conventional fluids. It is suitable for use in a broad range of ATF applications including most Ford, GM, Toyota, Honda, Nissan, Hyundai, BMW, Mercedes, Volvo, VW & Audi. Recommended for use in the following applications: GM DEXRON-II, DEXRON-III, DEXRON-VI, Ford MERCON LV, Toyota/Lexus Type T, T-II, T-IV, WS, Honda/Acura, ATF-Z1, Nissan/Infiniti Matic-D, Matic-J, Matric-K, Matic-S, Hyundai/Kia SP-II, SP-III, SP-IV, SPH-IV, BMW 7045E, ETL 8072B, LA2634, LT71141, Allison C-4, Mercedes Benz NAG-1, Volvo 1161521, 1161540, 97340, 1273.41, and VW/Audi G-052-025-A2, G-052-162-A1. For CVT applications Valvoline recommends Valvoline Full Synthetic CVT Fluid.

Product Features:

Formulated with full-synthetic base oils and long life friction modifiers to help improve smooth shifting, eliminate slippage and shudder, prevent clutch wear and improve drivability longer than conventional fluids
High-performance seal conditioners maintain and preserve the elasticity of seals to help prevent leaks in high mileage transmissions
Developed with anti-wear technology to help improve transmission durability
Engineered with a proprietary blend of base oils and advanced additives to provide better oil flow at low temperatures and greater film protection at higher temperatures

Our Top-Rated Differential Bearings for 1990 Cadillac Fleetwoods

Make a smart move for your 1990 Cadillac Fleetwood with our Differential Bearing for $10.99.

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$10.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

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 9 trusted brands. We carry the most popular Differential brands including National, Dorman, and Driveworks, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $10.79. 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 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 $24.66, you’ll find the perfect Differential for your needs and budget. National Differentials for the 1990 Cadillac Fleetwood come highly rated, with over 9 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.

from $17.99

(5)

Differential Pinion Seal

“Perfect fit”

from $11.99

(2)

Bearing Race

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

from $43.99

(2)

Shaft Repair Sleeve

“As a mechanic I dont have time or money to waste on inferior products, which this is not. Great product,great price”

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 $24.99, with an average price of $67.66, 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.

from $24.99

(38)

Differential Cover

“Item as described and good price.”

from $37.99

(14)

Differential Cover

“Heavy steel with the original magnet. Fits like original.. Not a cheap stamping by any means”

from $139.99

(10)

Differential Yoke including Seal and Pinion Nut

“Will this fot 2001 jeep grand cherokee 4.0 limited with dana 35 read end”

FAQs for 1990 Cadillac Fleetwood Differentials

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

Out of 59 Differentials that fit 1990 Cadillac Fleetwoods, 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 14 Bolt Hole Gasket (3215601) – $8.99
Differential Cover (20640679) – $24.99

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 $379.99 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 $108.25. 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:

Ring Gear Bolt (20520168) – $2.99
Differential Crush Sleeve (10282146) – $2.99
Differential Ring Gear Bolt (10282159) – $2.99
Differential Cross Shaft (10282201) – $2.99
Pinion Crush Sleeves (22140005) – $5.99

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 are the top-rated Differentials that fit the 1990 Cadillac Fleetwood?

The one 1990 Cadillac Fleetwood Differential we have in stock is the Ring Gear Bolt. It costs $2.99.

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

As of 3/1/26, 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.

1990 Cadillac Fleetwood Differentials

Dorman – Help – Pinion Crush Sleeves (Part No.81058)

USA Standard Gear – Axle For ’91-’96 Caprice & ’91-’93 Impala (Part No.35107)

Schaeffler – Shaft Seal (Part No.SS2588)

Dorman – Differential Yoke including Seal and Pinion Nut (Part No.697-500)

Richmond Gear – Differential Spool Bearing Kit (Part No.29-0013-1)

Motive Gear – Performance Differential Ring and Pinion (Part No.G885410)

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

National – Shaft Repair Sleeve (Part No.99193)

ATP – DIFF COVER KIT (Part No.111101)

Pro-King – Differential Cover Plug (Part No.742G484)

National – Tapered Roller Bearing Cone (Part No.HM89249)

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

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

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

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

Motive Gear – Pinion Nut (Part No.1260823)

Motive Gear – Differential Gear Install Kit (Part No.GM8.5IK)

Motive Gear – Differential Gear Install Kit (Part No.GM7.5IK)

National – Tapered Roller Bearing Cone (Part No.JLM506849A)

Schaeffler – Bearing – TRB (Tapered Roller Bearing) (Part No.KT36)

Pro-King – Differential Internal Nest Kit (Part No.741A717A)

Pro-King – Differential Internal Nest Kit (Part No.742G717A)

Motive Gear – Differential Ring Gear Bolt (Part No.14012703)

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

Motive Gear – Differential Master Bearing Kit – Koyo (Part No.R10RMK)

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

Motive Gear – Differential Carrier Shim Kit (Part No.GM9.5SSK)

Motive Gear – Differential Carrier Gear Kit (Part No.GM10BI-30)

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

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

ATP – DIFF COVER KIT (Part No.111102)

ATP – DIFF COVER KIT (Part No.111101)

Pro-King – Differential Carrier Cover (Part No.742G758A)

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

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

Valvoline – MaxLife Multi-Vehicle Automatic Transmission Fluid, 1 Gallon (Part No.773775)

Driveworks – Taper Bearing Cone (Part No.S-LM-501349)