1978 Mazda B1800 Differentials

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Keep Your 1978 Mazda B1800 in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1978 Mazda B1800 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Pinion Seals, Differential Oil, and Differential Bearings. 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.

Explore Related Parts

While you’re upgrading or replacing your Differential, don’t forget to check out other key components like Transfer Cases. At Advance Auto Parts, we’re here to help you keep your 1978 Mazda B1800 in peak condition, inside and out.

Essential 1978 Mazda B1800 Differentials

National – National Shaft Repair Sleeve, 99166 (Part No.99166)

National Shaft Repair Sleeve, 99166

from

$36.49
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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National – National Multi-Purpose Bearing, 30306 (Part No.30306)

National Multi-Purpose Bearing, 30306

from

$52.99
Manufactured with premium materials, National taper bearing assemblies are designed and engineered to meet OE specifications.
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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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National – National Multi-Purpose Seal, 712011 (Part No.712011)

National Multi-Purpose Seal, 712011

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 Multi-Purpose Bearing, 30206 (Part No.30206)

National Multi-Purpose Bearing, 30206

from

$30.49
Manufactured with premium materials, National® taper bearing assemblies are designed and engineered to meet OE specifications.
See More

National – National Multi-Purpose Bearing, 30208 (Part No.30208)

National Multi-Purpose Bearing, 30208

from

$33.99
Manufactured with premium materials, National taper bearing assemblies are designed and engineered to meet OE specifications.
See More

Most Popular Differential Pinion Seal for 1978 Mazda B1800s

Enhance your 1978 Mazda B1800 with this popular Differential Pinion Seal we have in stock, for $10.99.

National – National Multi-Purpose Seal, 712011 (Part No.712011)

National Multi-Purpose Seal, 712011

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

Best-Selling 1978 Mazda B1800 Differential Oil

Upgrade your B1800 with our best-selling Differential Oil.

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-Quality Differential Bearings for 1978 Mazda B1800s

Choose a high-quality OEM or aftermarket Differential Bearing for Mazda B1800s and enjoy top-notch performance from $33.99.

National – National Multi-Purpose Bearing, 30208 (Part No.30208)

National Multi-Purpose Bearing, 30208

from

$33.99
Manufactured with premium materials, National taper bearing assemblies are designed and engineered to meet OE specifications.
See More

Our Top Pick for a 1978 Mazda B1800 Front Differential Pinion Bearing

Invest in a durable Front Differential Pinion Bearing for your 1978 Mazda, knowing you’re getting trusted brands and expert craftsmanship.

National – National Multi-Purpose Bearing, 30206 (Part No.30206)

National Multi-Purpose Bearing, 30206

from

$30.49
Manufactured with premium materials, National® taper bearing assemblies are designed and engineered to meet OE specifications.
See More

Our Differential Pinion Pilot Bearings for 1978 Mazda B1800s

Make a smart move for your 1978 Mazda B1800 with our Differential Pinion Pilot Bearing for $36.49.

National – National Shaft Repair Sleeve, 99166 (Part No.99166)

National Shaft Repair Sleeve, 99166

from

$36.49
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

FAQs for 1978 Mazda B1800 Differentials

What are the best-selling Differentials for 1978 Mazda B1800s?

Out of 6 Differentials that fit 1978 Mazda B1800s, the following parts are the top sellers:

What’s the price range for 1978 Mazda B1800 Differentials?

The prices of Differentials for the 1978 Mazda B1800 range from $10.99 up to $52.99 for the most premium parts.

What is the average price of a Differential for a 1978 Mazda B1800?

The average price for Differentials for the 1978 Mazda B1800 is $33.49. 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.

What are the cheapest Differentials for my 1978 Mazda B1800?

The cheapest 1978 Mazda B1800 Differentials we carry are:

Does Advance Auto Parts sell Differentials for any other 1978 Mazda models?

Yes. We stock Differentials for 3 other popular 1978 Mazda models. Some of the most popular are 1978 GLC Differentials, 1978 Cosmo Differentials, 1978 RX-3 Differentials, and 1978 RX-4 Differentials.

What types of Differentials do you sell for my 1978 Mazda B1800?

As of 8/2/26, these are some of the most in-demand types of Differentials for a 1978 Mazda B1800:

Can I get help with 1978 Mazda B1800 Differential orders?

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

What is your return policy for Mazda B1800 Differentials?

Advance Auto Parts keeps returns simple. For new Mazda B1800 Differentials and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.