1979 Mercury Zephyr Differentials

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Keep Your 1979 Mercury Zephyr in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1979 Mercury Zephyr looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Bearings, Differential Carrier Bearing Set, 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, Powertrax, and Driveworks. For example, Motive Gear Differentials start at just $6.99 with an average 4.1 star rating. Powertrax and Driveworks offer similar pricing and quality, backed by strong customer feedback. With over 114 reviews and a solid 4.7 star average, you can shop with confidence knowing other Mercury Zephyr owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1979 Mercury Zephyr Differential at Advance Auto Parts is around $109.96, with a range that starts at $1.29 and goes up to $789.99. With 69 options in stock from 14 trusted brands, finding the right fit is easy. Popular picks like Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002, "Yukon Gear Cover Bolt For Ford 7.5"", 8.8"" & 9.75"", 33554", and Dorman – Help Pinion Crush Sleeves, 81056 start at just $6.99 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 1979 Mercury Zephyr in peak condition, inside and out.

Essential 1979 Mercury Zephyr Differentials

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

Dorman - Help Differential Shaft Lock Bolt, 81048

from

$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.
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Yukon Gear – Yukon Gear Bearing Race Driver for Popular Ford, Gm, Amc, Chrysler, and Dana Diffs, 56020 (Part No.56020)

Yukon Gear Bearing Race Driver for Popular Ford, Gm, Amc, Chrysler, and Dana Diffs, 56020

from

$215.99
Yukon Gear & Axle offers a full line of top quality differential tools to save time and money.
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Yukon Gear – "Yukon Gear Pinion Install Kit for Ford 7.5"" Differential, 13039" (Part No.13039)

"Yukon Gear Pinion Install Kit for Ford 7.5"" Differential, 13039"

from

$184.99
Yukon Pinion Installation Kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings and races can be reused. This kit features Timken bearings and races along with high-quality seals and small parts. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your gear set.
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Schaeffler – Schaeffler Shaft Seal, SS2865 (Part No.SS2865)

Schaeffler Shaft Seal, SS2865

from

$11.99
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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Driveworks – Driveworks Taper Bearing Set, S-A-17 (Part No.S-A-17)

Driveworks Taper Bearing Set, S-A-17

from

$12.49
Value-priced bearing meets all cataloged application requirements.
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Motive Gear – Motive Gear Differential Gear Install Kit, F7.5IK (Part No.F7.5IK)

Motive Gear Differential Gear Install Kit, F7.5IK

from

$35.49
Motive Gear Differential Gear Install Kit, F7.5IK.
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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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Yukon Gear – "Yukon Gear Super Carrier Shim Kit for Ford 7.5"", GM 7.5"", 8.2"" & 8.5, 55001" (Part No.55001)

"Yukon Gear Super Carrier Shim Kit for Ford 7.5"", GM 7.5"", 8.2"" & 8.5, 55001"

from

$59.99
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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Yukon Gear – Yukon Gear Trac Loc Friction Plate, 4 Tab, 16177 (Part No.16177)

Yukon Gear Trac Loc Friction Plate, 4 Tab, 16177

from

$21.99
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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Motive Gear – Motive Gear Differential Internal Carrier Gear Kit, F7.5BI (Part No.F7.5BI)

Motive Gear Differential Internal Carrier Gear Kit, F7.5BI

from

$149.99
Motive Gear Differential Internal Carrier Gear Kit, F7.5BI.
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Sealed Power – Sealed Power Engine Auxiliary Shaft Bearing Set, 1460M (Part No.1460M)

Sealed Power Engine Auxiliary Shaft Bearing Set, 1460M

from

$23.99
Sealed Power parts provide innovative designs, use leading-edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
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Yukon Gear – "Yukon Gear Cover Bolt For Ford 7.5"", 8.8"" & 9.75"", 33554" (Part No.33554)

"Yukon Gear Cover Bolt For Ford 7.5"", 8.8"" & 9.75"", 33554"

from

$6.99
“Yukon 1541H alloy replacement rear axle for Dana 60, 70, and 80, 35 spline. (40″” to 43.5″”) Full float axle (8×3.96″” ). Yukon 1541H alloy axles offer a strength increase over stock while retaining a low cost. Yukon 1541H alloy rear axles come with a one year warranty against manufacturing defects. This is a full-floating axle.”
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USA Standard Gear – USA Standard Gear Differential Cross Pin, 17044 (Part No.17044)

USA Standard Gear Differential Cross Pin, 17044

from

$22.99
“9”” FORD SPARTAN LOCKER EXTRA SHORT Cross Pin SHAFT .”
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Yukon Gear – "Yukon Gear Ford 8"" & 9"" Standard Open, Ag, & Detroit Locker Ring Gear Bolt, 33043" (Part No.33043)

"Yukon Gear Ford 8"" & 9"" Standard Open, Ag, & Detroit Locker Ring Gear Bolt, 33043"

from

$5.99
“Ford 8″” & 9″” standard Open, AG, & Detroit locker ring gear bolt, 1.0″” long, Ford.”
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Yukon Gear – "Yukon Gear Standard Open & Tracloc Pinion Gear and Thrust Washer for 7.5"" Ford, 33296" (Part No.33296)

"Yukon Gear Standard Open & Tracloc Pinion Gear and Thrust Washer for 7.5"" Ford, 33296"

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 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 Standard Open Spider Gear Kit for 7.5"" Ford with 28 Spline Axles, 16014" (Part No.16014)

"Yukon Gear Standard Open Spider Gear Kit for 7.5"" Ford with 28 Spline Axles, 16014"

from

$214.99
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 Master Overhaul Kit for Ford 7.5"" Differential, 14046" (Part No.14046)

"Yukon Gear Master Overhaul Kit for Ford 7.5"" Differential, 14046"

from

$275.99
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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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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Yukon Gear – "Yukon Gear Standard Open Side Gear and Thrust Washer for 7.5"" Ford, 33295" (Part No.33295)

"Yukon Gear Standard Open Side Gear and Thrust Washer for 7.5"" Ford, 33295"

from

$19.99
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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Powertrax – Powertrax Differential Lock Assembly, 1830-LR (Part No.1830-LR)

Powertrax Differential Lock Assembly, 1830-LR

from

$444.99
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 7.5"", 8"", 8.8"", 9"", 10.25"" Ford Redi Sleeve Yoke Saver, 30226" (Part No.30226)

"Yukon Gear 7.5"", 8"", 8.8"", 9"", 10.25"" Ford Redi Sleeve Yoke Saver, 30226"

from

$30.99
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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Yukon Gear – "Yukon Gear Bearing Install Kit for Ford 8"" Differential, 11040" (Part No.11040)

"Yukon Gear Bearing Install Kit for Ford 8"" Differential, 11040"

from

$255.99
Yukon Bearing Installation Kits are perfect for shops and builders who have shims on the shelf and are looking to save cost over a Master Overhaul Kit. This kit uses Timken bearings and races along with all high-quality small parts. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to properly install your ring and pinion gear set.
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Pro-King – Pro-King Differential Internal Nest Kit, 761A717 (Part No.761A717)

Pro-King Differential Internal Nest Kit, 761A717

from

$309.99
Pro-King is the leading supplier of transmission and driveline products in the aftermarket.
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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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Schaeffler – Schaeffler Tapered Roller Bearing, KT63 (Part No.KT63)

Schaeffler Tapered Roller Bearing, KT63

from

$25.99
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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Yukon Gear – "Yukon Gear Flange Yoke for Ford 7.5"" Passenger and Truck (4.3"" OD), 41045" (Part No.41045)

"Yukon Gear Flange Yoke for Ford 7.5"" Passenger and Truck (4.3"" OD), 41045"

from

$314.99
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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Yukon Gear – Yukon Gear Ford OEM Steel Differential Cover, 32364 (Part No.32364)

Yukon Gear Ford OEM Steel Differential Cover, 32364

from

$99.99
These Yukon replacement diff covers are a direct bolt-on.
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Most Popular Differential Bearing for 1979 Mercury Zephyrs

Enhance your 1979 Mercury Zephyr with this popular Differential Bearing we have in stock, for $21.99.

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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Best-Selling 1979 Mercury Zephyr Differential Carrier Bearing Set

Upgrade your Zephyr with our best-selling Differential Carrier Bearing Set with a 5 Starts rating across 1 review.

Driveworks – Driveworks Taper Bearing Set, S-A-17 (Part No.S-A-17)

Driveworks Taper Bearing Set, S-A-17

from

$12.49
Value-priced bearing meets all cataloged application requirements.
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Top-Quality Rear Housing Cover Gaskets for 1979 Mercury Zephyrs

Choose a high-quality OEM or aftermarket Rear Housing Cover Gasket for Mercury Zephyrs and enjoy top-notch performance from $7.49.

Felpro – Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55393 (Part No.RDS 55393)

Felpro Axle Housing Cover Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55393

from

$7.49
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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Victor Reinz – Victor Reinz Axle Housing Cover Gasket, 71-14838-00 (Part No.71-14838-00)

Victor Reinz Axle Housing Cover Gasket, 71-14838-00

from

$7.49
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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Top Picks for 1979 Mercury Zephyr Differential Covers

Invest in one of our 3 durable Differential Covers for your 1979 Mercury, knowing you’re getting trusted brands and expert craftsmanship.

Yukon Gear – "Yukon Gear Outer Oil Slinger For Ford 7.5"", 8.8"", 9"", 10.25"", 33022" (Part No.33022)

"Yukon Gear Outer Oil Slinger For Ford 7.5"", 8.8"", 9"", 10.25"", 33022"

from

$8.99
“Replacement outer oil slinger for Ford 7.5″”, 8.8″”, 9″”, 10.25″”, Nissan Titan rear, Dana 44 Rubicon & 44 JK non-Rubicon.”
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Yukon Gear – Yukon Gear Ford OEM Steel Differential Cover, 32364 (Part No.32364)

Yukon Gear Ford OEM Steel Differential Cover, 32364

from

$99.99
These Yukon replacement diff covers are a direct bolt-on.
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Yukon Gear – "Yukon Gear Chrome Cover for 7.5"" Ford, 32008" (Part No.32008)

"Yukon Gear Chrome Cover for 7.5"" Ford, 32008"

from

$42.99
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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Differential Oil for 1979 Mercury Zephyrs

Make a smart move for your 1979 Mercury Zephyr with products all priced from $44.99 to $137.99.

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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Top-Rated Differential Brands For Your 1979 Mercury Zephyr

When it comes to finding the perfect Differential for your 1979 Mercury Zephyr, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 14 trusted brands. We carry the most popular Differential brands including Powertrax, Driveworks, and Motive Gear, and more, all known for their exceptional customer ratings (average brand rating of 5.0 stars) and competitive prices, as low as $6.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1979 Mercury Zephyr, providing peace of mind with parts that meet or exceed OEM standards.

Popular Powertrax 1979 Mercury Zephyr Differentials

If you’re looking for a top-quality Differential for your 1979 Mercury Zephyr, Advance Auto Parts has exactly what you need with our selection of Powertrax Differentials. We have 1 Powertrax Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $444.99, you’ll find the perfect Differential for your needs and budget. Powertrax Differentials for the 1979 Mercury Zephyr come highly rated, with over 1 customer reviews and an impressive average rating of 5.0 stars. Choosing a Powertrax Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Powertrax Differential Lock Assembly, 1830-LR
from $444.99
(1)
Powertrax Differential Lock Assembly, 1830-LR
“Fast service and the right part.”

Top-Quality Driveworks 1979 Mercury Zephyr Differentials

For those in search of a high-quality Differential for their 1979 Mercury Zephyr, Advance Auto Parts offers a great selection of Driveworks Differentials. With 1 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 $12.49, giving you a range of options to suit your budget. Backed by over 1 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 Taper Bearing Set, S-A-17
from $12.49
(1)
Driveworks Taper Bearing Set, S-A-17
“Looked felt fine quality”

FAQs for 1979 Mercury Zephyr Differentials

What are the best-selling Differentials for 1979 Mercury Zephyrs?

Out of 69 Differentials that fit 1979 Mercury Zephyrs, the following parts are the top sellers:

What’s the price range for 1979 Mercury Zephyr Differentials?

The prices of Differentials for the 1979 Mercury Zephyr range from $1.29 up to $789.99 for the most premium parts.

What is the average price of a Differential for a 1979 Mercury Zephyr?

The average price for Differentials for the 1979 Mercury Zephyr is $109.96. 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 Zephyr model years?

Yes, we carry Differentials for 4 model years of Mercury Zephyrs between 1978 and 1983. The following model years are the most popular for Differential purchases: 1983, 1982, 1981, 1980, and 1978.

What are the cheapest Differentials for my 1979 Mercury Zephyr?

The cheapest 1979 Mercury Zephyr Differentials we carry are:

Does Advance Auto Parts sell Differentials for any other 1979 Mercury models?

Yes. We stock Differentials for 5 other popular 1979 Mercury models. Some of the most popular are 1979 Cougar Differentials, 1979 Grand Marquis Differentials, 1979 Capri Differentials, 1979 Marquis Differentials, and 1979 Monarch Differentials.

What are the top-rated Differentials that fit the 1979 Mercury Zephyr?

The one 1979 Mercury Zephyr Differential we have in stock is the Pro-King Differential Ring Gear Bolt, 761A935. It costs $1.29.

What types of Differentials do you sell for my 1979 Mercury Zephyr?

As of 8/2/26, these are some of the most in-demand types of Differentials for a 1979 Mercury Zephyr:

Can I get help with 1979 Mercury Zephyr 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 Zephyr Differentials?

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