1979 Mercury Monarch Differentials

Name: Differential Mini Spool
Brand: Motive Gear
SKU: MS9-31
Price: 31.99 USD

Find your specific 1979 Mercury Monarch original or aftermarket Differentials below. Order your parts online and have delivered to your home or pick up in-store at Advance Auto.

Essential 1979 Mercury Monarch Differentials

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$31.99

Product Features:

MINI SPOOL 8″ & 9″ 31 SPLN STL 090431

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$5.99

Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:

All products are designed to meet or exceed OE quality, form, fit and funtion.

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$129.99

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:

MSTR KIT BRG & SEAL FORD 8″

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$41.99

National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:

Premium bearing design matches OEM specifications
Precision manufactured using premium-grade steel for outstanding durability and performance
High radial load capacity makes them suitable for high speed applications
Industry leading coverage
Professional technicians know they can depend on National

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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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$19.79

Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:

All products are designed to meet or exceed OE quality, form, fit and funtion.

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$21.79

Mr. Gasket Axle Housing/Differential Cover or Rear End Gaskets are manufactured from a .047 inch thick cellulose/nitrile composite gasket material for excellent sealing and durability. They are precision die-cut for an excellent fit. Fits 1957-1981 Ford 10 bolt 9 inch ring gear.

Product Features:

.047″ thick cellulose/nitrile composite gasket material
Precision die cut
Reusable

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$309.99

Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:

All products are designed to meet or exceed OE quality, form, fit and funtion.

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$119.99

Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:

All products are designed to meet or exceed OE quality, form, fit and funtion.

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$9.49

National Oil Seals & Bearings offer a full line of premium oil seals and bearings.

Product Features:

Premium bearing design matches OEM specifications
Precision manufactured using premium-grade steel for outstanding durability and performance
Crowned raceways and rollers to ensure even load distribution for maximum life
Industry leading coverage
Professional technicians know they can depend on National

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$0.99

Pro-King is the leading supplier of transmission and driveline products in the aftermarket.

Product Features:

All products are designed to meet or exceed OE quality, form, fit and funtion.

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$21.99

CONE

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$259.99

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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$6.49

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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$2.49

Product Features:

CRUSH SLEEVE 7.25 & 8.25 MIN ORDER 5000

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$360.99

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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$52.99

Spectre’s Differential Covers are made to OEM specifications and are triple chrome plated for a lasting shine. Designed to protect the intricate moving parts of the differential, Spectre’s covers add an extra layer of protection to the vehicle’s underside. Featuring a 10-bolt design and fits the following vehicles with 7.5 inch ring gears: 1979-2003 Ford Mustang/Capri V8, 1982-2003 Ford Ranger, 1984-1997 Ford Aerostar, 1982-1992 Ford Bronco II, and 1994-2003 Mazda 2300/3000 differentials. Includes 10 SAE standard chrome bolts for installation. You’ll need to supply your own bolts if your application requires metric bolts.

Product Features:

10 chrome 5/16 inch -18 x 3/4 inch differential cover bolts
10-bolt design
Triple chrome plated for a lasting shine
Precision engineered for a perfect fit

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$15.99

SHAFT SEAL

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$47.49

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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$111.99

Product Features:

INT KT 8″ AND 9″ OPEN 28 SPL FRD

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$444.99

The Powertrax Lock-Right ultra-strength alloy locker’s straight-line performance is equal to a solid spool, but automatically unlocks in turns. Best suited for extreme off-road to severe on-road use, Powertrax Lock Right lockers replace the spider gears in your open differential carrier using basic tools and without affecting your ring and pinion settings. The whole job can be done in your driveway in a couple of hours, pin included! 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!The Powertrax® Lock-Right Locker provides outstanding traction for off-road machines and race vehicles. Powertrax No-Slip Traction Systems deliver excellent performance to street-driven cars and trucks.

Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.

Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.

Powertrax® = Extreme Traction Systems!

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$5.99

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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$551.99

Powertrax® lockers range from the original, Lock-Right for serious straight-line performance, to the No-Slip traction system for street-able vehicles.

Powertrax® offers three levels of GRIP locking differentials, ranging from the clutch-type GRIP LS with a forged steel case, the gear-driven GRIP PRO and finally the GRIP LOK for extreme traction.

Powertrax® = Extreme Traction Systems!

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$10.49

Product Features:

SOLID SPACER FORD 8.8″ & 9″

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$4.49

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

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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$8.49

Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

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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$35.49

Product Features:

MINI INSTALL KIT FORD 7.5

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$44.49

Popular 1979 Mercury Monarch Differentials Categories

Rear Differential Cover Gaskets

Differential Open Unit and Components

Differential Covers

Differential Pinion Shaft Lock Bolts

Differential Bearings

Differential Pinion Pilot Bearings

Differential Carriers

Differential Bearing Kits

Front Differential Pinion Bearings

Differential Carrier Shim Kits

Differential Pinion Seals

Differential Clutch Packs

Differential Mini Spools

Differential Ring and Pinions

Differential Pinion Supports

Rear Differential Pinion Bearings

Differential Spools

Automatic Transmission Differential Cover Gaskets

Complete Differentials

Differential Ring Gear Bolts

Differential Crush Sleeves

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Gear Install Kits

Differential Spider and Pinion Gear Kits

Differential Pinion Bearing Spacers

Maybe you’re in the middle of a full rebuild of that 1979 Mercury Monarch. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 95 different Differentials in our inventory ranging from $0.99 to $668.99. That means you can find the exact parts or products you need to keep that 1979 Mercury Monarch running smoothly.

Differentials are only as good as their brand. We stock 12 different brands to make sure you have plenty of trusted parts to choose from for your 1979 Mercury Monarch. Driveworks, FELPRO, and National are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Differentials for your 1979 Mercury Monarch, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 66 reviews in this category, some of the top rated parts include Differential Master Bearing Kit – Koyo with 5.0 stars and Differential Pinion Shim Kit with 5.0 stars.

So if you’re in the market for aftermarket Differentials to keep your 1979 Mercury Monarch rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Differentials Brands To Make Your 1979 Mercury Monarch Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1979 Mercury Monarch demands trusted brand parts and products to keep it running. Many trusted brands of Differentials make up Advance Auto Parts’ inventory, and all are ready to help make your Monarch the best it can be. Be sure to browse some of our top Differentials brands and parts.

Popular Felpro Differentials

We carry Felpro parts in our stock across Automatic Transmission Differential Cover Gaskets categories, plus more. For a 1979 Mercury Monarch, our most popular Felpro Differentials include:

from $8.49

(9)

Differential Carrier Gasket

Automatic Transmission Differential Cover Gaskets

Top 1979 Mercury Monarch Differentials from Driveworks

Driveworks products are another trusted brand when it comes to Differentials for your 1979 Mercury Monarch. Popular Driveworks parts include:

from $13.99

(14)

Tapered Cone/Cup Wheel Bearing Set

Front Differential Pinion Bearings

from $4.29

(1)

Oil Seal

Differential Pinion Seals

FAQs for 1979 Mercury Monarch Differentials

What are the most purchased Differentials for the 1979 Mercury Monarch?

Out of 95 Differentials for the 1979 Mercury Monarch, the most popular in our inventory are:

from $5.99

This product is not rated

Pinion Crush Sleeves

Differential Crush Sleeves

from $9.49

This product is not rated

Bearings

Rear Differential Pinion Bearings

from $15.79

(3)

Multi Purpose Seal

Differential Pinion Seals

What are the top-rated 1979 Mercury Monarch Differentials?

Top-rated Differentials for your 1979 Mercury Monarch based on customer reviews/ratings are:

from $112.99

(1)

Differential Master Bearing Kit – Koyo

“perfect product”

from $7.49

(1)

Differential Pinion Shim Kit

“good product”

from $444.99

(1)

Lock Right Locker

“Fast service and the right part.”

1979 Mercury Monarch Differentials

More 1979 Mercury Monarch Differentials

Essential 1979 Mercury Monarch Differentials

Motive Gear – Differential Mini Spool (Part No.MS9-31)

Pro-King – Differential Pinion Shim Kit (Part No.742G202)

Motive Gear – Differential Master Bearing Kit – Timken (Part No.RA310RMKT)

National – Bearings (Part No.R-1535-TAV)

Powertrax – Grip LS Traction System (Part No.LS109031)

Pro-King – Differential Bearing Cone (Part No.742G255)

Mr. Gasket – Rear End Gasket – Ford 9" – Blend Of Nitrile Rubber And Fiber For Excellent Sealing And Durability (Part No.82)

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

Pro-King – Differential Clutch Pack (Part No.763A119)

National – Bearings (Part No.M86610)

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

FAG US – CONE (Part No.KLM102949)

Richmond Gear – Differential Spool (Part No.81-0935-3)

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

Motive Gear – Differential Crush Sleeve (Part No.3507575)

Richmond Gear – Differential Ring And Pinion (Part No.69-0069-1)

Spectre – Differential Cover (Part No.6073)

FAG US – SHAFT SEAL (Part No.SS2865)

Motive Gear – Differential Lock Thrust Block (Part No.D3SZ4211A)

Motive Gear – Differential Carrier Gear Kit (Part No.F9-IO28)

Powertrax – Lock Right Locker (Part No.1830-LR)

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

Powertrax – No-Slip Traction System (Part No.9206902800)

Motive Gear – Differential Pinion Solid Spacer Kit w/Shims (Part No.4104)

Felpro – Differential Carrier Gasket (Part No.RDS 13270)

Felpro – Differential Carrier Gasket (Part No.RDS 55074)

Motive Gear – Differential Gear Install Kit (Part No.F7.5IK)

Motive Gear – Differential Gear Install Kit (Part No.F8IK)

Popular 1979 Mercury Monarch Differentials Categories