1990 Mercury Topaz Differentials

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Keep Your 1990 Mercury Topaz in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1990 Mercury Topaz looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Front Differential Pinion Bearings, Differential Oil, and Differential Seals. 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 and Royal Purple. For example, National Differentials start at just $18.29 with an average 4.3 star rating. Royal Purple offer similar pricing and quality, backed by strong customer feedback. With over 131 reviews and a solid 4.8 star average, you can shop with confidence knowing other Mercury Topaz owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1990 Mercury Topaz Differential at Advance Auto Parts is around $22.38, with a range that starts at $8.99 and goes up to $41.49. With 12 options in stock from 5 trusted brands, finding the right fit is easy. Popular picks like Valvoline Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart, 889787, National Multi-Purpose Bearing, A-18, and Driveworks Tapered Roller Bearing, S-JL-69349 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 Mercury Topaz in peak condition, inside and out.

Essential 1990 Mercury Topaz Differentials

Valvoline – Valvoline Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart, 889787 (Part No.889787)

Valvoline Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart, 889787

from

$19.99
We’ve squeezed innovation into every ounce of Valvoline FlexFill SAE 75W-140 Full Synthetic Gear Oil, the ultimate gear protection in hypoid rear differentials and non-synchronized manual transmissions. Our unique new flexible pouch makes getting into the tightest places to lubricate gears easier than ever and with less waste. The superior detergent package-based formulation contains fully synthetic basestocks and special additives that help protect parts from rust and corrosion while providing exceptional high and low temperature protection and excellent thermal stability, especially in demanding driving situations such as towing and off-roading. It contains an extreme pressure additive for better load carrying capacity, wear resistance additives that assist in protecting gear teeth, a limited slip additive for optimal clutch pack performance, and an anti-foaming agent for better lubrication and service life. Valvoline FlexFill SAE 75W-140 Full Synthetic Gear Oil is recommended for use in axle applications requiring factory-fill or drain-and-fill levels for limited slip performance. Volume: 1 quart.
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Royal Purple – Royal Purple MaxGear SAE 75W140 High Performance Gear Oil w/Friction Modifier Additive, 1 QT, 01301 (Part No.01301)

Royal Purple MaxGear SAE 75W140 High Performance Gear Oil w/Friction Modifier Additive, 1 QT, 01301

from

$28.49
Max Gear is recommended for truck and automotive differentials, outboard motor lower units or in rear axles or manual transmissions requiring an API fluid. Max Gear is a high performance automotive gear oil designed to provide maximum protection to heavily loaded gears while increasing power throughput through the drive train. Max Gear virtually eliminates both gear and bearing wear-even under severe squeeze film conditions caused by extremely high loads, sudden shock loads or low RPMs. Slippery, synthetic molecules not only reduce wear and friction but significantly increase Max Gear’s cold weather fluidity and lubricity, making it the ideal choice for vehicles operating in cold climates. Gears run smoother, quieter, cooler and longer without overhauls. It is noncorrosive to both ferrous and nonferrous metals.
See More

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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National – National Multi-Purpose Seal, 472258 (Part No.472258)

National Multi-Purpose Seal, 472258

from

$10.99
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.
See More

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.
See More

Driveworks – Driveworks Tapered Roller Bearing, S-JL-69349 (Part No.S-JL-69349)

Driveworks Tapered Roller Bearing, S-JL-69349

from

$8.99
Driveworks Tapered Roller Bearing, S-JL-69349.
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National – National Tapered Roller Bearing Cone, M86647 (Part No.M86647)

National Tapered Roller Bearing Cone, M86647

from

$27.99
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
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National – National Bearing Race, JL69310 (Part No.JL69310)

National Bearing Race, JL69310

from

$12.99
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
See More

National – National Multi-Purpose Bearing, A-18 (Part No.A-18)

National Multi-Purpose Bearing, A-18

from

$18.29
Manufactured with premium-grade steel, National taper bearing sets feature crowned raceways and rollers to ensure even load distribution.
See More

Schaeffler – Schaeffler Bearing – TRB (Tapered Roller Bearing), KT45 (Part No.KT45)

Schaeffler Bearing - TRB (Tapered Roller Bearing), KT45

from

$21.99
With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.
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Driveworks – Driveworks Wheel Bearing: Direct Fit, 1 Piece, S-513001 (Part No.S-513001)

Driveworks Wheel Bearing: Direct Fit, 1 Piece, S-513001

from

$33.99
Driveworks wheel bearings are a direct replacement for original parts at a much more affordable cost. Each wheel bearing is engineered to meet or exceed OE specifications, and goes through intensive quality control inspections to ensure proper fitment. Manufactured using high-precision machinery and advanced heat treatment processes, these bearings are designed for maximum durability and extended periods of use under any driving condition. Specific to certain applications, Driveworks bearings have multi-lip seals built into the bearing for increased protection against invasive contaminants and premature wear.
See More

Schaeffler – Schaeffler Shaft Seal, SS2421 (Part No.SS2421)

Schaeffler Shaft Seal, SS2421

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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Most Popular Front Differential Pinion Bearings for 1990 Mercury Topazs

Enhance your 1990 Mercury Topaz with one of the 2 Front Differential Pinion Bearings we have in stock, starting at just $12.99.

National – National Tapered Roller Bearing Cone, M86647 (Part No.M86647)

National Tapered Roller Bearing Cone, M86647

from

$27.99
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
See More

National – National Bearing Race, JL69310 (Part No.JL69310)

National Bearing Race, JL69310

from

$12.99
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
See More

Best-Selling 1990 Mercury Topaz Differential Oil

Upgrade your Topaz with one of our 3 best-selling Differential Oil, earning an average 5 stars rating across 57 reviews.

Royal Purple – Royal Purple MaxGear SAE 75W140 High Performance Gear Oil w/Friction Modifier Additive, 1 QT, 01301 (Part No.01301)

Royal Purple MaxGear SAE 75W140 High Performance Gear Oil w/Friction Modifier Additive, 1 QT, 01301

from

$28.49
Max Gear is recommended for truck and automotive differentials, outboard motor lower units or in rear axles or manual transmissions requiring an API fluid. Max Gear is a high performance automotive gear oil designed to provide maximum protection to heavily loaded gears while increasing power throughput through the drive train. Max Gear virtually eliminates both gear and bearing wear-even under severe squeeze film conditions caused by extremely high loads, sudden shock loads or low RPMs. Slippery, synthetic molecules not only reduce wear and friction but significantly increase Max Gear’s cold weather fluidity and lubricity, making it the ideal choice for vehicles operating in cold climates. Gears run smoother, quieter, cooler and longer without overhauls. It is noncorrosive to both ferrous and nonferrous metals.
See More

Valvoline – Valvoline Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart, 889787 (Part No.889787)

Valvoline Flex Fill Transmission & Differential Gear Oil: Full Synthetic 75W-140, 1 Quart, 889787

from

$19.99
We’ve squeezed innovation into every ounce of Valvoline FlexFill SAE 75W-140 Full Synthetic Gear Oil, the ultimate gear protection in hypoid rear differentials and non-synchronized manual transmissions. Our unique new flexible pouch makes getting into the tightest places to lubricate gears easier than ever and with less waste. The superior detergent package-based formulation contains fully synthetic basestocks and special additives that help protect parts from rust and corrosion while providing exceptional high and low temperature protection and excellent thermal stability, especially in demanding driving situations such as towing and off-roading. It contains an extreme pressure additive for better load carrying capacity, wear resistance additives that assist in protecting gear teeth, a limited slip additive for optimal clutch pack performance, and an anti-foaming agent for better lubrication and service life. Valvoline FlexFill SAE 75W-140 Full Synthetic Gear Oil is recommended for use in axle applications requiring factory-fill or drain-and-fill levels for limited slip performance. Volume: 1 quart.
See More

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.
See More

Top-Quality Differential Seals for 1990 Mercury Topazs

Choose a high-quality OEM or aftermarket Differential Seal for Mercury Topazs and enjoy top-notch performance from $10.99.

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.
See More

National – National Multi-Purpose Seal, 472258 (Part No.472258)

National Multi-Purpose Seal, 472258

from

$10.99
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.
See More

Our Top Pick for a 1990 Mercury Topaz Differential Carrier Bearing

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

Driveworks – Driveworks Tapered Roller Bearing, S-JL-69349 (Part No.S-JL-69349)

Driveworks Tapered Roller Bearing, S-JL-69349

from

$8.99
Driveworks Tapered Roller Bearing, S-JL-69349.
See More

Top-Rated Differential Bearings for 1990 Mercury Topazs

Make a smart move for your 1990 Mercury Topaz with products all priced from $18.29 to $33.99.

National – National Multi-Purpose Bearing, A-18 (Part No.A-18)

National Multi-Purpose Bearing, A-18

from

$18.29
Manufactured with premium-grade steel, National taper bearing sets feature crowned raceways and rollers to ensure even load distribution.
See More

Driveworks – Driveworks Wheel Bearing: Direct Fit, 1 Piece, S-513001 (Part No.S-513001)

Driveworks Wheel Bearing: Direct Fit, 1 Piece, S-513001

from

$33.99
Driveworks wheel bearings are a direct replacement for original parts at a much more affordable cost. Each wheel bearing is engineered to meet or exceed OE specifications, and goes through intensive quality control inspections to ensure proper fitment. Manufactured using high-precision machinery and advanced heat treatment processes, these bearings are designed for maximum durability and extended periods of use under any driving condition. Specific to certain applications, Driveworks bearings have multi-lip seals built into the bearing for increased protection against invasive contaminants and premature wear.
See More

Schaeffler – Schaeffler Bearing – TRB (Tapered Roller Bearing), KT45 (Part No.KT45)

Schaeffler Bearing - TRB (Tapered Roller Bearing), KT45

from

$21.99
With advanced load-carrying capacity and compact design, tapered roller bearings are used in wheel bearings, transmissions, differentials, transfer cases and other miscellanous applications. FAG manufacturers over 100 million tapered roller bearings annually.
See More

Top-Rated Differential Brands For Your 1990 Mercury Topaz

When it comes to finding the perfect Differential for your 1990 Mercury Topaz, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 5 trusted brands. We carry the most popular Differential brands including Royal Purple and National, and more, all known for their exceptional customer ratings (average brand rating of 4.8 stars) and competitive prices, as low as $18.29. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1990 Mercury Topaz, providing peace of mind with parts that meet or exceed OEM standards.

Popular Royal Purple 1990 Mercury Topaz Differentials

If you’re looking for a top-quality Differential for your 1990 Mercury Topaz, Advance Auto Parts has exactly what you need with our selection of Royal Purple Differentials. We have 1 Royal Purple Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $28.49, you’ll find the perfect Differential for your needs and budget. Royal Purple Differentials for the 1990 Mercury Topaz come highly rated, with over 57 customer reviews and an impressive average rating of 4.8 stars. Choosing a Royal Purple Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.

Top-Quality National 1990 Mercury Topaz Differentials

For those in search of a high-quality Differential for their 1990 Mercury Topaz, Advance Auto Parts offers a great selection of National Differentials. With 2 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 $18.29, with an average price of $29.89, giving you a range of options to suit your budget. Backed by over 37 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.
National Multi-Purpose Bearing, A-18
from $18.29
(36)
National Multi-Purpose Bearing, A-18
“High quality.”
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”

FAQs for 1990 Mercury Topaz Differentials

What are the best-selling Differentials for 1990 Mercury Topazs?

Out of 12 Differentials that fit 1990 Mercury Topazs, the following parts are the top sellers:

What’s the price range for 1990 Mercury Topaz Differentials?

The prices of Differentials for the 1990 Mercury Topaz range from $8.99 up to $41.49 for the most premium parts.

What is the average price of a Differential for a 1990 Mercury Topaz?

The average price for Differentials for the 1990 Mercury Topaz is $22.38. 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 Mercury Topaz model years?

Yes, we carry Differentials for 9 model years of Mercury Topazs between 1984 and 1994. The following model years are the most popular for Differential purchases: 1994, 1993, 1992, 1991, 1989, 1988, 1987, 1986, and 1985.

What are the cheapest Differentials for my 1990 Mercury Topaz?

The cheapest 1990 Mercury Topaz Differentials we carry are:

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

Yes. We stock Differentials for 3 other popular 1990 Mercury models. Some of the most popular are 1990 Cougar Differentials, 1990 Grand Marquis Differentials, 1990 Colony Park Differentials, and 1990 Sable Differentials.

What are the top-rated Differentials that fit the 1990 Mercury Topaz?

Based on 131 reviews by customers, our 1990 Mercury Topaz Differentials have an average customer rating of 4.8 stars. These are the highest-rated categories of Differentials for the 1990 Mercury Topaz and their top-rated products:

What types of Differentials do you sell for my 1990 Mercury Topaz?

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

Can I get help with 1990 Mercury Topaz Differential orders?

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

What is your return policy for Mercury Topaz Differentials?

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