1981 Mercury Zephyr Differentials

Name: Differential Super Bearing Kit - Koyo
Brand: Motive Gear
SKU: R7.5FRSK
Price: 113.99 USD

Please Select your Vehicle to See Exact Fit Parts

Keep Your 1981 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 1981 Mercury Zephyr looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Rear Differential Cover Gaskets, Differential Covers, 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.

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, Motive Gear, and Driveworks. For example, National Differentials start at just $11.99 with an average 4.3 star rating. Motive Gear and Driveworks offer similar pricing and quality, backed by strong customer feedback. With over 2,904 reviews and a solid 5 star average, you can shop with confidence knowing other Mercury Zephyr owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1981 Mercury Zephyr Differential at Advance Auto Parts is around $153.42, with a range that starts at $1.29 and goes up to $1,566.99. With 85 options in stock from 13 trusted brands, finding the right fit is easy. Popular picks like 3 Qt – 80W90 Conventional Gear Oil With Posi Additive, Differential Shaft Lock Bolt, and 3 Qt – Penzoil 80W90 Conventional Gear Oil start at just $6.79 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 1981 Mercury Zephyr in peak condition, inside and out.

Looking for the perfect Differential for your 1981 Mercury Zephyr? 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 Mercury Zephyr. Whether you’re driving a 1981 model or another popular model year like 1978, 1979, 1980, 1982, and 1983, 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 1981 Mercury Zephyr Differentials

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$113.99

Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv

Product Features:

KIT, SUPER BRG & SEAL-FORD 7.5

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$17.99

Product Features:

CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
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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$251.99

Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings & races can be reused. This kit uses Timken bearings and races along with a high quality pinion seal and small parts. Included in this kit are the pinion bearings and races, pilot bearing (if applicable), crush sleeve (if applicable), complete pinion shim kit, thread locker, and marking compound with brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your pinion gear.

Product Features:

Fits Ford 8″
Included are pinion bearings and races, pinion seal, pinion nut, crush sleeve, complete pinion shim kit, and marking compound with brush.

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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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$156.99

Spindle nut washer for Dana 28, ’92 & down. This replaces Spicer part number 40075.

Product Features:

Spider gear kit
Fit Ford 7.5″ open differential
Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt and spider gear thrust washers.

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$21.99

Product Features:

Friction plate
Fits Ford 8″ and 9″ Trac Loc positraction

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$22.99

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.

Product Features:

Steel-backed Babbitt lining material
Used in automotive and high-performance
Babbitt is designed to perform under extreme loads without damaging other engine parts
Babbitt is more environmentally friendly than other material
ISO & QS certified manufacturing

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$4.99

Pinion gear thrust washer for 8″ and 9″ Ford, Model 20, and 7.25″ Chrysler.

Product Features:

Pinion gear thrust washer for Ford 8″, Ford 9″ and Chrysler 7.25″

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$10.99

Crush Sleeve for Model 35, Chrysler 7.25″, 8.25″ Ford 8″ & GM 7.75″. Approx 0.495″ long.

Product Features:

Crush sleeve for AMC Model 35, Chrysler 7.25″ and 8.25″, Ford 8″ and GM 7.75″
0.495″ tall

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$1.29

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

8″ Ford pinion shim kit.

Product Features:

Pinion depth shims for Ford 8″

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$6.99

All Motive Gear products are engineered for their specific application and manufactured in state of the art facilities. All of our products undergo rigid quality control processes to insure proper fit, performance and longevity. Motive Gear products can be found in the winners circle at NHRA, IHRA, NMRA, NMCA, SODA, SCORE, BITD, Ultra-4 and NASCAR events because we offer unmatched selection and quality demanded by racers and their crew chiefs – the same quality and selection demanded by DIY customers and top mechanics. With four warehouses strategically located across North America, most Motive Gear orders arrive within 2-4 days. Win with Motive Gear!

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$8.99

Product Features:

Trac Loc spring for Ford 8″ and 9″

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$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.

Product Features:

35 spline
8 x 3.96″ bolt pattern
Cut to length design fits 40″-43.5″ applications
Fits Dana Spicer 60, 70 and 80

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$19.99

Standard Open side gear thrust washer for 7.5″ Ford.

Product Features:

Side gear thrust washer
Fits Ford 7.5″

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$149.99

Product Features:

INTERNALS FORD 7.5

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$2.99

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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$10.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$379.99

8″ TracLoc case, bare, 2 or 4 PIN, 4 TAB clutch design.

Product Features:

Trac Loc positraction carrier case
Does not include spider gears
Fits Ford 8″

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$149.99

The Motive Gear replacement axle shaft offers an OE-quality axle shaft at a fraction of the OE cost. Manufactured from 1541H material on high-tolerance CNC equipment, this axle shaft is designed to provide a perfect fit every time.

Product Features:

AXLE SHAFT 8.8″ 28 SPL. 29 1/4″ 79-93 MUSTANG L & R

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$249.99

USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. Included 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), threading locking compound, marking compound with brush and gasket.

Product Features:

Fits Ford 8″ with aftermarket positraction
Uses Koyo bearings and races
Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, thread locker, marking compound with brush and gasket.

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$451.99

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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$219.99

Bearing race driver. No return.

Product Features:

Bearing race driver
Fits M88010 race
All steel construction

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$309.99

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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$6.99

Cross pin bolt for Chrysler 8.25″, 9.25″ rear, Ford 7.5″, 8.8″, GM 12 bolt car & truck, 7.2″ IFs, 7.5″, 7.6″, 8.0″, 8.25″ IFS & 8.5″.

Product Features:

Cross pin bolt for Chrysler 8.25″ and 9.25″ rear, Ford 7.5″ and 8.8″, GM 12 botl car and truck, 8.5″, 8.25″ IFS, 8.0″, 7.625″, 7.5″ and 7.2″ IFS

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$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.

Product Features:

Outer oil slinger for Ford 10.25″, 7.5″, 8.8″ and 9″ also Jeep JK and Nissan Titan rear

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$42.99

Chrome cover for 7.5″ Ford.

Product Features:

Fits Ford 7.5″
Chrome

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$99.99

DiffrlCover

Popular 1981 Mercury Zephyr 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 Cover Bolts

Differential Carriers

Differential Bearing Kits

Front Differential Pinion Bearings

Differential Spider Gear Kits

Differential Rebuild Kits

Differential Carrier Shim Kits

Differential Pinion Seals

Differential Clutch Packs

Differential Ring and Pinions

Differential Carrier Bearings

Differential Lock Springs

Rear Housing Cover Gaskets

Differential Pinion Bearing Kits

Complete Differentials

Differential Ring Gear Bolts

Bearing Race Drivers

Differential Carrier Bearing Shims

Differential Crush Sleeves

Differential Side Bearing Spacers

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Gear Install Kits

Differential Cross Pins

Differential Side Gear Thrust Washers

Differential Pinion Gear Thrust Washers

Differential Drive Pinion Oil Deflectors

Auxiliary Shaft Bearings

Differential Spider and Pinion Gear Kits

Differential Pinion Bearing Spacers

Differential Bolts

Most Popular Rear Differential Cover Gasket for 1981 Mercury Zephyrs

Enhance your 1981 Mercury Zephyr with this popular Rear Differential Cover Gasket we have in stock, for $9.99.

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$9.99

7.5″ Ford cover gasket.

Product Features:

Cover gasket
Fits Ford 7.5″

Best-Selling 1981 Mercury Zephyr Differential Covers

Upgrade your Zephyr with one of our 2 best-selling Differential Covers.

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from

$99.99

DiffrlCover

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$42.99

Chrome cover for 7.5″ Ford.

Product Features:

Fits Ford 7.5″
Chrome

Top-Quality Differential Bearings for 1981 Mercury Zephyrs

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

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$10.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

Top Picks for 1981 Mercury Zephyr Differential Oil

Invest in one of our 6 durable Differential Oil for your 1981 Mercury, 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

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$57.99

3 Qt. Penzoil 80W90 conventional gear Oil. W/ bottle of Posi additive.

Product Features:

Includes three quarts of conventional oil and one 4oz bottle of Yukon positraction additive

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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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$148.99

Redline Synthetic “Shock Proof” Oil with positraction Additive. 4 Quarts.

Product Features:

Includes four quarts of Redline Shockproof oil and one 4oz bottle of Yukon positraction additive

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$99.99

Redline Synthetic “Shock Proof” Oil. 3 Quarts.

Product Features:

Includes three quarts of Redline Shockproof oil

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$137.99

Redline Synthetic “Shock Proof” Oil. 4 Quarts.

Product Features:

Includes four quarts of Redline Shockproof oil

Our Top-Rated Rear Housing Cover Gaskets for 1981 Mercury Zephyrs

Make a smart move for your 1981 Mercury Zephyr with our Rear Housing Cover Gasket for $7.49.

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$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.

Product Features:

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-Rated Differential Brands For Your 1981 Mercury Zephyr

When it comes to finding the perfect Differential for your 1981 Mercury Zephyr, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 13 trusted brands. We carry the most popular Differential brands including National, Driveworks, 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 $6.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1981 Mercury Zephyr, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 1981 Mercury Zephyr Differentials

If you’re looking for a top-quality Differential for your 1981 Mercury Zephyr, 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 $14.99, you’ll find the perfect Differential for your needs and budget. National Differentials for the 1981 Mercury Zephyr 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

(7)

Multi-Purpose Bearing

“Comparable with the Timkens I removed. NATIONAL bearings have lasted decades in many of my other machines.”

from $11.99

(2)

Bearing Race

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

Top-Quality Driveworks 1981 Mercury Zephyr Differentials

For those in search of a high-quality Differential for their 1981 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 $10.99, giving you a range of options to suit your budget. Backed by over 3 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.

from $10.99

(3)

Taper Bearing Cone

“Worked for my 2006 escalade esv front diff”

FAQs for 1981 Mercury Zephyr Differentials

What are the best-selling Differentials for 1981 Mercury Zephyrs?

Out of 85 Differentials that fit 1981 Mercury Zephyrs, the following parts are the top sellers:

3 Qt – 80W90 Conventional Gear Oil With Posi Additive (11645418) – $57.99
Differential Shaft Lock Bolt (5707714) – $6.79
3 Qt – Penzoil 80W90 Conventional Gear Oil (11644279) – $44.99

What’s the price range for 1981 Mercury Zephyr Differentials?

The prices of Differentials for the 1981 Mercury Zephyr range from $1.29 up to $1,566.99 for the most premium parts.

What is the average price of a Differential for a 1981 Mercury Zephyr?

The average price for Differentials for the 1981 Mercury Zephyr is $153.42. 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, 1980, 1979, and 1978.

What are the cheapest Differentials for my 1981 Mercury Zephyr?

The cheapest 1981 Mercury Zephyr Differentials we carry are:

Differential Ring Gear Bolt (10282257) – $1.29
Ring Gear Bolt (20520509) – $1.99
Differential Crush Sleeve (10282338) – $2.99
Differential Cross Shaft (10282201) – $2.99
Differential Crush Sleeve (10715159) – $3.99

Does Advance Auto Parts sell Differentials for any other 1981 Mercury models?

Yes. We stock Differentials for 4 other popular 1981 Mercury models. Some of the most popular are 1981 Cougar Differentials, 1981 Grand Marquis Differentials, 1981 Capri Differentials, 1981 Marquis Differentials, and 1981 Lynx Differentials.

What types of Differentials do you sell for my 1981 Mercury Zephyr?

As of 3/1/26, these are some of the most in-demand types of Differentials for a 1981 Mercury Zephyr:

Can I get help with 1981 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.

1981 Mercury Zephyr Differentials

Motive Gear – Differential Super Bearing Kit – Koyo (Part No.R7.5FRSK)

National – Multi-Purpose Bearing (Part No.A-17)

Yukon Gear – Pinion Install Kit For Ford 8" Differential (Part No.13040)

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

USA Standard Gear – Standard Spider Gear Set For Ford 7.5" (Part No.39014)

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

Sealed Power – Engine Auxiliary Shaft Bearing Set (Part No.1460M)

Yukon Gear – Pinion Gear And Thrust Washer For 8" And 9" Ford, Model 20, And 7.25" Chrysler (Part No.33301)

Yukon Gear – Crush Sleeve (Part No.33093)

Pro-King – Differential Ring Gear Bolt (Part No.761A935)

Yukon Gear – Pinion Depth Shims For Ford 8" (Part No.55055)

Motive Gear – Differential Pinion Nut (Part No.379570S)

Yukon Gear – Trac Loc Spring For Ford 9" & 8" (Part No.33518)

Yukon Gear – Cover Bolt For Ford 7.5", 8.8" & 9.75" (Part No.33554)

Yukon Gear – Standard Open Side Gear And Thrust Washer For 7.5" Ford (Part No.33295)

Motive Gear – Differential Carrier Gear Kit (Part No.F7.5BI)

Pro-King – Differential Cross Shaft (Part No.742G930)

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

Yukon Gear – Trac Loc Case For Ford 8" (Part No.20075)

Motive Gear – Axle Shaft (Part No.MG1231)

USA Standard Gear – Master Overhaul Kit for the Ford 8" Differential w/ HD Posi (Part No.37029)

Powertrax – Grip LS Traction System (Part No.LS108028)

Yukon Gear – Bearing Race Driver (Part No.56023)

Pro-King – Differential Internal Nest Kit (Part No.761A717)

Yukon Gear – Cross Pin Bolt (Part No.33067)

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

Yukon Gear – Chrome Cover For 7.5" Ford (Part No.32008)

Yukon Gear – DiffrlCover (Part No.32364)

Yukon Gear – 7.5" Ford Cover Gasket (Part No.23009)

Yukon Gear – DiffrlCover (Part No.32364)

Yukon Gear – Chrome Cover For 7.5" Ford (Part No.32008)

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

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

Yukon Gear – 3 Qt – 80W90 Conventional Gear Oil With Posi Additive (Part No.15003)

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

Yukon Gear – Redline Synthetic "Shock Proof" Oil With Positraction Additive – 4 Quarts (Part No.15005)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 3 Quarts (Part No.15000)

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 4 Quarts (Part No.15004)

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