1978 Mercury Bobcat Drivetrains

Below you will find various in-demand Mercury Drivetrains, components and accessories for your 1978 Bobcat. Advance Auto Parts has popular Bobcat parts like Universal Joints, Spindles, Transfer Cases and more. You’ll also find aftermarket and OEM Drivetrains for other Bobcat model years including 1975, 1976, 1977, 1979, 1980 and more. Select a category of 1978 Mercury Bobcat Drivetrains below and start saving instantly.

Popular 1978 Mercury Bobcat Drivetrains Categories

Differential Oil

Pinion Shaft Bearings

Drive Shaft Support Bolts

U-Joints

Rear Differential Cover Gaskets

Differential Open Unit and Components

Differential Pinion Shaft Lock Bolts

Differential Bearings

Bearing Pullers

Drive Shaft Bearings

Axle Shaft Seals

Differential Pinion Pilot Bearings

Axle Shaft Bearings

Differential Carriers

Differential Bearing Kits

Input Shaft Bearings

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

U-Joint U-Bolt Kits

Differential End Yokes

Spindle Lock Nuts

Differential Spools

Differential Lock Springs

Transfer Case Output Shaft Bearings

Differential Pinion Bearing Kits

Drive Shaft Seals

Complete Differentials

Differential Ring Gear Bolts

Bearing Race Drivers

Spindle Lock Nut Thrust Washers

Spindle Retainers

Differential Crush Sleeves

Differential Side Bearing Spacers

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Gear Install Kits

Differential Cross Pins

Automatic Transmission Differential Carrier Gaskets

Differential Housing O-Rings

Differential Side Gear Thrust Washers

Differential Pilot Bearing

Differential Pinion Gear Thrust Washers

Differential Drive Pinion Gear Bearing Retainer Bolts

Auxiliary Shaft Bearings

Spindle Washers

Limited Slip Differential Assemblies

Differential Spider and Pinion Gear Kits

Differential Lock Thrust Blocks

Essential Drivetrains for 1978 Mercury Bobcats

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$8.99

Product Features:

Trac Loc spring for Ford 8″ and 9″

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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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$62.99

The FAG repair sleeve is a precision element that provides additional sealing for damaged shafts. Made of heat-treated stainless steel, the FAG repair sleeve signifcantly increases the life of the shaft and prevents premature wear. Since no shaft removal or machining is required during the repair, the repair sleeve is a cost effective repair solution to protect damaged surfaces.

Product Features:

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

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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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$24.99

8″ Ford pinion seal.Yukon Mighty seal.

Product Features:

Pinion seal
Fits Ford 8″

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$13.99

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.

Product Features:

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

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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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$22.49

This drive shaft 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 engine mount bolt matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this drive shaft 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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$6.99

Pinion support bolt for 8″ and 9″ Ford.

Product Features:

Pinion support bolt for Ford 8″ and 9″
3/8″ x 24 thread
1.0″ long

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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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$7.69

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.

Product Features:

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

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$883.99

The Yukon carrier bearing Puller works with an impact gun to quickly and safely remove carrier bearings without damaging them. This unit comes with a handy bench top stand and works with up to one ton applications including Dana 70HD, Dana 80, 10.25″ & 10.5″ Ford, or GM & Chrysler 11.5″ differentials.

Product Features:

Carrier bearing puller
Works with an impact gun to safely and easliy remove carrrier bearings

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$6.99

This spindle nut retainer 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 spindle nut retainer matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this retainer 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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$51.99

Flat side gear without hub for 8″ and 9″ Ford with 28 splines.

Product Features:

Side gear without hub
Fits Ford 8″ and 9″ Trac Loc positraction with 28 spline axles

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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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$44.49

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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$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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$22.99

9″ FORD SPARTAN LOCKER EXTRA SHORT Cross Pin SHAFT .

Product Features:

USA Standard Gear heavy-duty cross pin shaft
Fits Ford 9″

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$9.99

8″ Ford O-ring.

Product Features:

Pinion support o-ring
Fits Ford 8″

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$11.99

By constantly introducing design enhancements that extend product life and simplify installation and replacement, MOOG has earned its reputation as the chassis industry’s Problem Solver.

Product Features:

For U-Joints 375, 430, 434 & 498
Fits 1-1/8″ bearings

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$23.99

Pinion gear for 8″ and 9″ Ford.

Product Features:

Pinion gear
Fits Ford 8″ and 9″

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$2.99

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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$941.99

The Yukon Grizzly Locker is the ultimate in locking differentials for street, off-road, & drag racing. Grizzly Lockers provide 100% power to both tires, while still allowing for disengagement while negotiating turns. The Yukon Grizzly locker is a mechanical locking differential. It features a forged case and 8620 internals for maximum strength. It’s patented design reduces common locker failures. All units assembled in the USA! All Grizzly Lockers are backed by the best warranty in the business! Yukon covers the replacement unit and covers any collaterally damaged parts and associated labor, up to $2,000!

Product Features:

Fits Ford 8″ with 31 spline axles
Patented internal design reduces common locker failures
8620 internals for added strength
Assembled in the USA

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$4.49

This spindle nut 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 spindle nut matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this nut 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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$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.

Product Features:

Design type: spring loaded; single-lip
Temperature range: -20 Deg. F to 300 Deg. F / -29 Deg. C to 49 Deg. C
Resistance to EP lubricants
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

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$302.99

Yukon Master Overhaul kits give you all the high quality parts you need to start & 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. Included in this kit 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), Thread locking compound, marking compound with brush, and gasket. Yukon’s Master Overhaul kits are the most comprehensive and complete kits on the market. They do extensive research to ensure that every kit is specially tailored to your application.

Product Features:

Fits Ford 8″
Included are Timken 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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$184.99

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 7.5″
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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$2.99

This spindle nut washer 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 spindle nut washer matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this washer is a reliable replacement for an original part that is missing or has failed due to wear
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

Upgrade your 1978 Mercury Bobcat with Top-Quality Drivetrains

When it comes to maintaining or upgrading your 1978 Mercury Bobcat, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Mercury or enhancing its overall performance, Drivetrains are key to keeping your Bobcat functioning at its best. At Advance Auto Parts, we offer a wide selection of 135 Drivetrains for the 1978 Mercury Bobcat, designed to meet your needs without breaking the bank. From Universal Joint replacements to Spindles upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Drivetrains for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Drivetrains for your 1978 Mercury Bobcat at great prices. Our Drivetrains inventory for this model ranges from just $1.29 to $941.99, with an average price of $171.87. Our 135 Drivetrains in stock come from 14 trusted brands, so you’re sure to find the right part for your 1978 Mercury Bobcat without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 1978 Mercury Bobcat, we stock popular OEM and aftermarket Drivetrains from top names like Powertrax, Moog, National, and more. Powertrax Drivetrains start at just $444.99 and boast an impressive 4.7 stars average rating from customers. Moog and National also bring quality to the table, with Drivetrains available starting at $7.99, and at an average 4.5 stars rating. With 564 customer reviews and counting, our 1978 Mercury Bobcat Drivetrains have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Drivetrain upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 1978 Mercury Bobcat is always ready to roll. We’re committed to providing you with everything you need to keep your Bobcat in top shape, all in one place. Start shopping confidently below for your 1978 Mercury Bobcat!

Best-Selling Universal Joints for 1978 Mercury Bobcats

Enhance the driving experience in your Mercury with 13 quality Universal Joint components, starting at $6.99.

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$11.99

For U-Joints 375, 430, 434 & 498
Fits 1-1/8″ bearings

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$35.99

Product Features:

BUILT TO LAST – Rugged design specifically engineered for fleets, off-highway and commercial vehicles
STRONG AND DURABLE – Bearing cups are cold-formed, case-hardened and precision ground for strength and durability
KEEPS DIRT OUT – Abrasion-resistant nitrile seals provide ideal grease retention and protection from under-vehicle contaminants
GREASEABLE DESIGN – Drilled and tapped grease fitting holes for easy servicing and cross trunnions with large grease reservoirs with radial grease channels for grease distribution
INHIBITS PREMATURE WEAR – Cross trunnions ground to a 15-25 RMS finish for a smooth surface free of microscopic grooves that can cause premature wear
RELIABLE PERFORMANCE – Internal anti-drainback valve integrated into thrust washer controls lubrication flow and prevents dry startup
RIGOROUS TESTING – Comprehensive testing throughout design and development processes by MOOG engineers for quality you can count on

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$33.99

Product Features:

BUILT TO LAST – Rugged design specifically engineered for applications with higher torque and horsepower
COMPREHENSIVE COVERAGE – Available for foreign and domestic nameplates
CORROSION PROTECTION – Exclusive MICRO SHIELD coating protects against rust and corrosion
KEEPS DIRT OUT – Abrasion-resistant nitrile seals provide ideal grease retention and protection from under-vehicle contaminants
RIGOROUS TESTING – Comprehensive testing throughout design and development processes by MOOG engineers for quality you can count on
STRONG AND DURABLE – Bearing cups are cold-forged, case-hardened and precision ground while steel cross is forged and carburized heat treated for strength and durability

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$46.99

Product Features:

BUILT TO LAST – Rugged design specifically engineered for applications with higher torque and horsepower
COMPREHENSIVE COVERAGE – Available for foreign and domestic nameplates
CORROSION PROTECTION – Exclusive MICRO SHIELD coating protects against rust and corrosion
GREASABLE DESIGN – Bearing cups feature a radial design to allow 360 Degrees lubricant distribution to all bearing surfaces
KEEPS DIRT OUT – Abrasion-resistant nitrile seals provide ideal grease retention and protection from under-vehicle contaminants
RIGOROUS TESTING – Comprehensive testing throughout design and development processes by MOOG engineers for quality you can count on
STRONG AND DURABLE – Bearing cups are cold-forged, case-hardened and precision ground while steel cross is forged and carburized heat treated for strength and durability

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$15.99

Driveworks Universal Joints are designed to meet or exceed OE fit, form, and function. These universal joints are set to provide superior quality and easy installation. Driveworks Universal Joints are constructed from quality materials for extended durability. Driveworks Universal Joints are pre-lubricated with premium grease to provide a longer service life. The grease fittings are pre-installed to allow for easy maintenance (where applicable).

Product Features:

The cross is hot forged for the higher torque and horsepower
The bearing cups are made by cold forging, having higher strength and better rigidity
Bearing cups allow 360 lubricant distribution to bearing surfaces, and are precision-ground for maximum load-carrying capabilities
Lubrication grooves are designed to ensure grease penetration to entire journal and needle bearings
Grease fitting in the cross allows for easy maintenance and the flexible use of the whole assembly
Snap rings are held to strict tolerances to ensure proper cup position and retention
Nitrile rubber seals to optimize grease retention and reduce contamination

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$6.99

This universal joint U-bolt kit is designed to match the original components required to repair and resecure universal joints on specified vehicles. Made of quality components, this kit is engineered for reliable performance and durability.

Product Features:

Direct replacement – this universal joint U-bolt kit is designed to match the original components required to repair and resecure universal joints on specified vehicles
Ideal solution – this kit is a reliable replacement for original components that are missing or have failed due to fatigue
Durable construction – this kit is made from quality components to ensure reliable performance and a 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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$26.99

Product Features:

COMPREHENSIVE COVERAGE – Available for foreign and domestic nameplates
GREASABLE DESIGN – Greasable u-joints allow for new grease to flush out contaminants and moisture
KEEPS DIRT OUT – Nitrile rubber grease seals use a compressed double lip design for effective protection against contaminants
RIGOROUS TESTING – Comprehensive testing throughout design and development processes by MOOG engineers for quality you can count on
STRONG AND DURABLE – Bearing cups are cold-forged, case-hardened and precision ground while steel cross is forged and carburized heat treated for strength and durability
Cross forging shape and flash provide easier installation and high strength

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$44.99

Yukon 1310 U/Joint with zerk fitting on cross. 3.219″ snap ring span, 1.062″ cap diameter. Outside snap ring.

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$59.99

Yukon 1310 to 1330 adapter U/Joint. The 1310 side has a 3.219″ span and 1.062″ caps. The 1330 side has a 3.625″ span and 1.062″ caps. Both sides are outside snap ring.

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$30.99

Product Features:

BUILT TO LAST – Rugged design specifically engineered for applications with higher torque and horsepower
COMPREHENSIVE COVERAGE – Available for foreign and domestic nameplates
CORROSION PROTECTION – Exclusive MICRO SHIELD coating protects against rust and corrosion
KEEPS DIRT OUT – Abrasion-resistant nitrile seals provide ideal grease retention and protection from under-vehicle contaminants
RIGOROUS TESTING – Comprehensive testing throughout design and development processes by MOOG engineers for quality you can count on
STRONG AND DURABLE – Bearing cups are cold-forged, case-hardened and precision ground while steel cross is forged and carburized heat treated for strength and durability

from

$27.99

Product Features:

BUILT TO LAST – Rugged design specifically engineered for applications with higher torque and horsepower
COMPREHENSIVE COVERAGE – Available for foreign and domestic nameplates
CORROSION PROTECTION – Exclusive MICRO SHIELD coating protects against rust and corrosion
GREASABLE DESIGN – Bearing cups feature a radial design to allow 360 Degrees lubricant distribution to all bearing surfaces
KEEPS DIRT OUT – Abrasion-resistant nitrile seals provide ideal grease retention and protection from under-vehicle contaminants
RIGOROUS TESTING – Comprehensive testing throughout design and development processes by MOOG engineers for quality you can count on
STRONG AND DURABLE – Bearing cups are cold-forged, case-hardened and precision ground while steel cross is forged and carburized heat treated for strength and durability

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$57.99

1310 Yukon Lifetime U/joint. 1.718″ snap ring span, 1.062″ cap diameter. Inside snap ring.

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$29.99

You expect a lot from your vehicle, and Spicer Life Series (SPL) universal joints deliver. SPL universal joints consistently outperform competitors, so you can hit the road or trail with confidence. Check out the difference that SPL universal joints can make in your vehicle, and make sure you are getting the longer life, increased bearing capacity and lower maintenance costs that Spicer Life Series (SPL) can provide.

Top Picks for 1978 Mercury Bobcat Transfer Cases

Upgrade Mercury Bobcats with top-quality Transfer Cases parts, including 3 OEM and aftermarket selections for your 1978 model.

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$11.29

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$62.99

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

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$13.99

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

In-Demand Drive Shafts and Axles for 1978 Mercury Bobcats

Select from 7 premium Drive Shafts and Axles parts for your 1978 Mercury Bobcat, with prices ranging from $7.69 to $689.99.

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$22.49

Direct replacement – this engine mount bolt matches the fit and function of the factory part on specified years, makes and models
Ideal solution – this drive shaft 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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$13.99

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

Product Features:

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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$43.99

Outer axle seal for 8″ Ford.Yukon Mighty seal.

Product Features:

Outer axle seal
Fits Ford 8″

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$689.99

The Yukon carrier bearing Puller works with an impact gun to quickly and safely remove carrier bearings without damaging them. This unit comes with a handy bench top stand and works with up to most standard one ton applications. This unit is works with differentials up to one-ton applcations. It is not compatible with Dana 70HD, Dana 80, 10.25″ & 10.5″ Ford, or GM & Chrysler 11.5″ differentials.

Product Features:

Carrier bearing puller
Works with an impact gun to safely and easliy remove carrrier bearings
Not compatible with Dana 70HD, Dana 80, Ford 10.25″ and 10.5″ or Gm and Chrysler 11.5″ applications

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$13.99

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

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$10.99

Design type: spring loaded; single-lip
Temperature range: -20 Deg. F to 300 Deg. F / -29 Deg. C to 49 Deg. C
Resistance to EP lubricants
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$7.69

High-precision and High-quality components used in all KITs
Coverage of classic and new high-tech solutions for the best system coverage

Most Sold 1978 Mercury Bobcat Differentials

Explore our best-selling Mercury parts for the 1978 Bobcat among 108 OEM and aftermarket options starting from $1.29.

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from

$13.79

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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$7.99

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

Product Features:

PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION – Crowned raceways 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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$12.99

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.

Product Features:

Design type: spring loaded; multi-lip
Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
Good low temperature capability
Low swell in hydrocarbon fluids
Delivers quality and reliable performance for every type of repair

from

$2.99

Product Features:

CRUSH SLEEVE 7.25 & 8.25 MIN ORDER 5000

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$37.99

Designed to repair damaged, grooved or worn shafts
Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
Easy to install with removable flange and installation tool

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$551.99

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!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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$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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$26.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$333.99

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.

from

$16.99

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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$6.99

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$5.99

Product Features:

Copper washer
Fits Ford 8″ and 9″

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$5.49

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 and manufactured specifically for the repair environment
Unsurpassed quality you can trust
Includes all parts needed to complete the repair

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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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$37.99

Designed to repair damaged, grooved or worn shafts
Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
Easy to install with removable flange and installation tool

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$5.99

Ford 8″ & 9″ standard Open, AG, & Detroit locker ring gear bolt. 7/16″ head, .925″ long.

Product Features:

Ring gear bolt for Ford 8″ and 9″
For use with standard open carrier, Auburn Gear limited slip and Detroit Locker
7/16″ head
.925″ long

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$5.99

Ford 8″ & 9″ standard Open, AG, & Detroit locker ring gear bolt, 1.0″ long, Ford.

Product Features:

Ring gear bolt for Ford 8″ and 9″
For use with standard open carrier, Auburn Gear limited slip and Detroit Locker
1.0″ long

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$4.99

Ford 8″ & 9″ TracLoc ring gear bolt, 1-1/4″ long.

Product Features:

Ring gear bolt for Ford 8″ and 9″
For use with Trac Loc limited slip
1.25″ long

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$1.99

Product Features:

BOLT 9″ FORD OPEN R.G. SAME AS M-4216A200

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$7.99

Pinion nut for Ford 7.5″, 8″, 8.8″, 9 3/8″ & 9″. 1 1/6″ socket, 3/4″ x 20 thread.

Product Features:

Pinion nut for Ford 7.5″, 8″ and 9″
3/4″ x 20 thread
1 1/6″ socket

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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

from

$8.49

Product Features:

PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
SMOOTH ROTATION: Crowned raceways 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

from

$5.99

Product Features:

Side gear thrust washer for Ford 8″, Ford 9″ and AMC Model 20
0.030″ thick

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$99.99

Redline Synthetic “Shock Proof” Oil. 3 Quarts.

Product Features:

Includes three quarts of Redline Shockproof oil

Top-Rated Drivetrains Brands For Your 1978 Mercury Bobcat

Shop for the best-rated brands offering Drivetrains and other products for your 1978 Mercury Bobcats. Below you’ll find some of our best rated Drivetrains from Powertrax, Moog, and National, and more. Drivetrains from these brands that fit a 1978 Bobcat start at just $7.99 and are rated as high as 4.7 stars. OEM and aftermarket Drivetrains don’t get more top quality, durable, and affordable than from the brands below.

Popular Powertrax 1978 Mercury Bobcat Drivetrains

When it comes to maintaining or upgrading your 1978 Mercury Bobcat, using quality Drivetrains is essential to ensure durability and a perfect fit. Powertrax ticks all of those boxes. We offer a wide selection of Powertrax Drivetrains, specifically designed for the 1978 Mercury Bobcat. With over 2 Powertrax brand Drivetrains in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $444.99, with an average price of just $498.49. Plus, with over 2 customer reviews and an average rating of 4.7 stars, you can trust that our Powertrax Drivetrains will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.

from $551.99

(1)

No-Slip Traction System

“Installed, no issues, works great.”

from $444.99

(1)

Lock Right Locker

“Fast service and the right part.”

Popular Moog 1978 Mercury Bobcat Drivetrains

Moog auto parts is one of the highest quality Drivetrain brands in the market. Any 1978 Mercury Bobcat owner should feel confident when installing genuine Moog parts in their vehicle. To ensure the best fit and performance for your 1978 Bobcat, Advance Auto Parts carries a full inventory of 3 Moog Drivetrains. Plus you will be keeping your Mercury in peak condition while saving money because prices on these Moog Drivetrains range from $11.99 to $35.99, plus, with more than 112 customer reviews and an impressive 4.5 stars average rating, you can be confident the Fram Drivetrains below will deliver on both quality and value.

from $11.99

(2)

Universal Joint U-Bolt Kit

“quality product”

from $33.99

(28)

Non-Greaseable Super Strength Universal Joint

“installed as needed”

from $35.99

(82)

Greaseable Premium Universal Joint

“Great u joints works very well I’ll recomended”

FAQs for 1978 Mercury Bobcat Drivetrains

Which Drivetrains are best-sellers for 1978 Mercury Bobcats?

Out of 135 Drivetrains that fit 1978 Mercury Bobcats, the following parts are the top sellers:

Universal Joint (10265714) – $15.99
Multi-Purpose Bearing (3275965) – $16.99
Tapered Cone/Cup Wheel Bearing Set (5050723) – $26.99

What’s the price range for 1978 Mercury Bobcat Drivetrains?

Drivetrain prices for the 1978 Mercury Bobcat start at $1.29 and go up to $941.99 for the most premium parts.

What’s the average price of a Drivetrain for a 1978 Mercury Bobcat?

The average price for Drivetrains for the 1978 Mercury Bobcat is $171.87. Keep in mind the variety of part types within our Drivetrain category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Drivetrains for other Mercury Bobcat model years?

Yes, we currently carry Drivetrains for 4 model years of Mercury Bobcats between 1975 and 1980. Drivetrains are bought most frequently for the following model years: 1980, 1979, 1977, 1976, and 1975.

What are the cheapest Drivetrains for my 1978 Mercury Bobcat?

The cheapest 1978 Mercury Bobcat Drivetrains we carry in stock are:

Differential Ring Gear Bolt (10282257) – $1.29
Ring Gear Bolt (19640279) – $1.99
Differential Crush Sleeve (20520219) – $2.99
Differential Cross Shaft (10282201) – $2.99
Spindle Washer – I.D. 13/16 In. O.D. 1-21/32 In. Thickness 3/32 In. (Sold by each) (22148784) – $2.99

What are the top-rated Drivetrains that fit the 1978 Mercury Bobcat?

Out of 564 reviews by customers, our 1978 Mercury Bobcat Drivetrains have an average customer rating of . These are some of the highest-rated Drivetrain types for the 1978 Mercury Bobcat and their top-rated products:

Differentials
- No-Slip Traction System (10461097) – $551.99
- Multi-Purpose Bearing (3275736) – $13.79
- Bearing Race (3277585) – $7.99
Universal Joints
- No-Slip Traction System (10461097) – $551.99
- Multi-Purpose Bearing (3275736) – $13.79
- Bearing Race (3277585) – $7.99

What types of Drivetrains do you sell for my 1978 Mercury Bobcat?

As of 11/2/25, these are some of the most in-demand types of Drivetrains for a 1978 Mercury Bobcat:

Can I get help with 1978 Mercury Bobcat Drivetrain orders?

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

What is your return policy for Mercury Bobcat Drivetrains?

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

1978 Mercury Bobcat Drivetrains

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

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

FAG US – Repair Sleeve (Part No.SR3501)

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

Yukon Gear – 8" Ford Pinion Seal (Part No.30180)

FAG US – Cone (Part No.KL68149)

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

Dorman – Help – Driveshaft Flange Bolts (Part No.80992)

Yukon Gear – Pinion Support Bolt For 8" And 9" Ford (Part No.33242)

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

FAG US – Cup (Part No.LM48510)

Yukon Gear – The Carrier Bearing Puller (Part No.56072)

Dorman – Spindle Nut 13/16 In.-20 Hex Size 1-1/8 In. (Sold by each) (Part No.615-075)

Yukon Gear – Flat Side Gear Without Hub For 8" And 9" Ford With 28 Splines (Part No.16164)

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

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

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

USA Standard Gear – 9" Ford Spartan Locker Cross Pin, Extra Short (Part No.17044)

Yukon Gear – 8" Ford O-Ring (Part No.30027)

MOOG Driveline Products – Universal Joint U-Bolt Kit (Part No.534-10)

Yukon Gear – Pinion Gear For 8" And 9" Ford (Part No.16160)

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

Yukon Gear – Grizzly Locker For Ford 8" With 31 Spline Axles (Part No.28007)

Dorman – Standard Spindle Nut 13/16 In.-20 Hex Size 1-1/8 In. (sold by each) (Part No.615-074)

National – Manual Transmission Input Shaft Seal (Part No.2503N)

Yukon Gear – Master Overhaul Kit For Ford 8" Differential (Part No.14047)

Yukon Gear – Pinion Install Kit For Ford 7.5" Differential (Part No.13039)

Dorman – Spindle Washer – I.D. 13/16 In. O.D. 1-21/32 In. Thickness 3/32 In. (Sold by each) (Part No.618-013)

MOOG Driveline Products – Universal Joint U-Bolt Kit (Part No.534-10)

MOOG Driveline Products – Greaseable Premium Universal Joint (Part No.369)

MOOG Driveline Products – Non-Greaseable Super Strength Universal Joint (Part No.269)

MOOG Driveline Products – Greaseable Super Strength Universal Joint (Part No.280)

Driveworks – Universal Joint (Part No.DW-369)

Dorman – Help – U-Joint Bolt Kit (Part No.81004)

MOOG Driveline Products – Greaseable Premium Universal Joint (Part No.430)

Yukon Gear – 1310 U/Joint With Zerk Fitting On Cross (Part No.42008)

Yukon Gear – 1310 To 1330 Adapter U/Joint (Part No.42005)

MOOG Driveline Products – Non-Greaseable Super Strength Universal Joint (Part No.230)

MOOG Driveline Products – Greaseable Super Strength Universal Joint (Part No.255)

Yukon Gear – 1310 Lifetime U/Joint (Part No.42003)

Spicer – Universal Joint (Part No.5-7439X)

Dorman – Standard Spindle Nut 13/16 In.-20 Hex Size 1-1/8 In. (sold by each) (Part No.615-074)

Dorman – Spindle Nut 13/16 In.-20 Hex Size 1-1/8 In. (Sold by each) (Part No.615-075)

Dorman – Spindle Washer – I.D. 13/16 In. O.D. 1-21/32 In. Thickness 3/32 In. (Part No.618-013.1)

Dorman – Spindle Washer – I.D. 13/16 In. O.D. 1-21/32 In. Thickness 3/32 In. (Sold by each) (Part No.618-013)

Driveworks – Taper Bearing Cone (Part No.S-M-88048)

FAG US – Repair Sleeve (Part No.SR3501)

FAG US – Cone (Part No.KL68149)

Dorman – Help – Driveshaft Flange Bolts (Part No.80992)

National – Bearing (Part No.M88048)

Yukon Gear – Outer Axle Seal For 8" Ford (Part No.30031)

Yukon Gear – The Carrier Bearing Puller (Part No.56034)

FAG US – Cone (Part No.KLM48548)

National – Manual Transmission Input Shaft Seal (Part No.2503N)

FAG US – Cup (Part No.LM48510)

National – Multi-Purpose Bearing (Part No.A-13)

National – Bearing Race (Part No.M88010)

National – Multi-Purpose Seal (Part No.8181NA)

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

National – Shaft Repair Sleeve (Part No.99199)

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

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

Driveworks – Tapered Cone/Cup Wheel Bearing Set (Part No.S-A-35)

Richmond Gear – Differential Ring And Pinion (Part No.49-0111-1)

National – Multi-Purpose Bearing (Part No.A-5)

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

Yukon Gear – Copper Washer For Ford 9" & 8" Dropout Housing (Part No.32339)

Felpro – Differential Carrier Gasket Oval Shaped 10 Bolt Hole Gasket (Part No.RDS 13270)

Yukon Gear – Crush Sleeve (Part No.33093)

National – Shaft Repair Sleeve (Part No.99181)

Yukon Gear – Ford 8" & 9" Standard Open, Ag, & Detroit Locker Ring Gear Bolt (Part No.33058)

Yukon Gear – Ford 8" & 9" Standard Open, Ag, & Detroit Locker Ring Gear Bolt (Part No.33043)

Yukon Gear – Ford 8" & 9" Tracloc Ring Gear Bolt (Part No.33044)

Motive Gear – Ring Gear Bolt (Part No.D8OZ4216B)

Yukon Gear – Pinion Nut (Part No.33154)

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

National – Bearing Race (Part No.LM501310)

Yukon Gear – Dana 44, Ford 8" / 9", And Model 20 Side Gear Thrust Washer Replacement (Part No.33283)

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