1978 Mercury Bobcat Differentials

Essential 1978 Mercury Bobcat Differentials

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

Trac Loc Case For Ford 8"

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″
See More

Yukon Gear – Crush Sleeve (Part No.33085)

Crush Sleeve

from

$9.99
Crush Sleeve for Model 20, Ford 10.25″, 10.5″, 7.5″, 8.8″, 9 3/8″, 9″ & 9.75″. .480″ long.

Product Features:
  • Crush sleeve for AMC Model 20, Ford 10.25″, 10.5″, 7.5″, 8.8″, 9″ and 9.75″
  • 0.480″ tall
See More

Motive Gear – Differential Master Bearing Kit – Koyo (Part No.RA310RAMK)

Differential Master Bearing Kit - Koyo

from

$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:
  • FORD 8″ BRG MSTR KIT W/AUBURN & TRUETRAC
See More

Yukon Gear – Ford 7.5" & 8.8" Ring Gear Bolt, Standard Open & Tracloc (Part No.33053)

Ford 7.5" & 8.8" Ring Gear Bolt, Standard Open & Tracloc

from

$5.99
Ford 7.5″ & 8.8″ ring gear bolt, standard Open & TracLoc. 7/16″ x 20.

Product Features:
  • Ring gear bolt for Ford 7.5″ and 8.8″
  • 7/16″ x 20
See More

Motive Gear – Differential Pinion Shaft Support Block (Part No.D3SZ4211A)

Differential Pinion Shaft Support Block

from

$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 o
See More

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

Trac Loc Spring For Ford 9" & 8"

from

$8.99
Product Features:
  • Trac Loc spring for Ford 8″ and 9″
See More

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

Grip LS Traction System

from

$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!
See More

National – Bearings (Part No.M88010)

Bearings

from

$10.49
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
See More

Yukon Gear – Flange Yoke For Ford 7.5" Passenger And Truck (4.3" Od) (Part No.41045)

Flange Yoke For Ford 7.5" Passenger And Truck (4.3" Od)

from

$314.99
Yukon flange yoke for Ford 7.5″ passenger and truck (4.3″ OD). All Yukon yokes come with a one year warranty against manufacturing defects.

Product Features:
  • Fits Ford 7.5″
  • 28 spline
  • Round companion flange
  • 4.3″ O.D.
See More

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

Differential Cross Shaft

from

$2.79
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.
See More

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

Differential Internal Nest Kit

from

$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.
See More

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

Differential Pinion Nut

from

$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!
See More

National – Shaft Repair Sleeve (Part No.99166)

Shaft Repair Sleeve

from

$34.99
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:
  • 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
  • Installation tool reduces sleeve distortion and allows for installation without removal from the shaft
See More

USA Standard Gear – Ring & Pinion Gear Set For Ford 8" In A 3.00 Ratio (Part No.36115)

Ring & Pinion Gear Set For Ford 8" In A 3.00 Ratio

from

$413.99
USA Standard ring & pinion sets are the right choice to add confidence to your install. USA Standard Gear offers a full line of ring & pinion sets for a variety of common & hard to find applications. USA standard gear offers a standard one year warranty against defects on their ring & pinion sets.

Product Features:
  • Fits Ford 8″
  • 8.00″ ring gear diameter
  • 25 spline pinion
  • 10 ring gear bolts
  • 3.00 ratio
See More

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

Redline Synthetic "Shock Proof" Oil With Positraction Additive - 4 Quarts

from

$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
See More

Yukon Gear – Dura Grip For Ford 7.5" (Part No.26034)

Dura Grip For Ford 7.5"

from

$789.99
The Yukon Dura Grip provides aggressive yet smooth traction to give you the confidence & performance you need. Get longer life and better traction with the heavy duty Yukon Dura Grip Positraction. The Yukon Dura Grip uses a nodular case and forged 4320 in

Product Features:
  • Fits Ford 7.5″
  • 28 spline
  • 4-spring, clutch style positraction
  • Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
  • Fully rebuildable
  • Assembled in the USA
See More

Yukon Gear – Standard Open Spider Gear Kit For 7.5" Ford With 28 Spline Axles (Part No.16014)

Standard Open Spider Gear Kit For 7.5" Ford With 28 Spline Axles

from

$214.99
Yukon standard open spider gear kit for 7.5″ Ford with 28 spline axles. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. All components come with a one year warranty against manufacturing defects.

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.
See More

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

Pinion Install Kit For Ford 7.5" Differential

from

$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.
See More

Yukon Gear – Trac Loc Steel Clutch Plate, 4 Tab (Part No.16178)

Trac Loc Steel Clutch Plate, 4 Tab

from

$8.99
Product Features:
  • Steel clutch plate
  • Fits Ford 8″ and 9″ Trac Loc
See More

Yukon Gear – Super Carrier Shim Kit For Ford 7.5", GM 7.5", 8.2" & 8.5" (Part No.55001)

Super Carrier Shim Kit For Ford 7.5", GM 7.5", 8.2" & 8.5"

from

$59.99
Product Features:
  • Super carrier shim kit for Ford 7.5″, GM 7.5″, 7.625″, 7.6″ IFS, 7.6″ IRS, 7.75″, 8.2″, 8.2″ Buick, Oldsmobile and Pontiac and GM 8.5″ front and rear
  • Interlocking design makes installation much easier
See More

National – Bearings (Part No.HM88648)

Bearings

from

$27.49
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
See More

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

Differential Carrier Gasket

from

$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
See More

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

Cross Pin Bolt

from

$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
See More

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

8" Ford Pinion Seal

from

$24.99
8″ Ford pinion seal.Yukon Mighty seal.

Product Features:
  • Pinion seal
  • Fits Ford 8″
See More

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

Pinion Gear And Thrust Washer For 8" And 9" Ford, Model 20, And 7.25" Chrysler

from

$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″
See More

USA Standard Gear – Master Overhaul Kit for the Ford 7.5 Differential (Part No.37027)

Master Overhaul Kit for the Ford 7.5 Differential

from

$199.99
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 7.5″
  • 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.
See More

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

Pinion Support Bolt For 8" And 9" Ford

from

$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
See More

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

Dana 44, Ford 8" / 9", And Model 20 Side Gear Thrust Washer Replacement

from

$5.99
Product Features:
  • Side gear thrust washer for Ford 8″, Ford 9″ and AMC Model 20
  • 0.030″ thick
See More

1978 Mercury Bobcat Differentials

Maybe you’re in the middle of a full rebuild of that 1978 Mercury Bobcat. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 106 different Differentials in our inventory ranging from $0.99 to $931.99. That means you can find the exact parts or products you need to keep that 1978 Mercury Bobcat running smoothly.

Differentials are only as good as their brand. We stock 10 different brands to make sure you have plenty of trusted parts to choose from for your 1978 Mercury Bobcat. Driveworks, National, and Yukon Gear 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 1978 Mercury Bobcat, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 72 reviews in this category, some of the top rated parts include Multi Purpose Seal with 5.0 stars and Differential Crush Sleeve with 5.0 stars.

So if you’re in the market for aftermarket Differentials to keep your 1978 Mercury Bobcat 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 1978 Mercury Bobcat Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1978 Mercury Bobcat 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 Bobcat the best it can be. Be sure to browse some of our top Differentials brands and parts.

Popular Powertrax Differentials

We carry Powertrax parts in our stock across Differential Open Unit and Components categories, plus more. For a 1978 Mercury Bobcat, our most popular Powertrax Differentials include:
Lock Right Locker
from $444.99
(1)
Lock Right Locker
Differential Open Unit and Components

Top 1978 Mercury Bobcat Differentials from National

National products are another trusted brand when it comes to Differentials for your 1978 Mercury Bobcat. Popular National parts include:
Bearings
from $15.99
(9)
Bearings
Front Differential Pinion Bearings
Bearings
from $10.49
(4)
Bearings
Rear Differential Pinion Bearings
Bearings
from $18.79
(3)
Bearings
Front Differential Pinion Bearings

FAQs for 1978 Mercury Bobcat Differentials

What are the most purchased Differentials for the 1978 Mercury Bobcat?

Out of 106 Differentials for the 1978 Mercury Bobcat, the most popular in our inventory are:
Tapered Cone/Cup Wheel Bearing Set
from $13.99
(14)
Tapered Cone/Cup Wheel Bearing Set
Differential Bearings
3 Qt - Penzoil 80W90 Conventional Gear Oil
from $44.99
This product is not rated
3 Qt – Penzoil 80W90 Conventional Gear Oil
Differential Oil
Copper Washer For Ford 9" & 8" Dropout Housing
from $5.99
This product is not rated
Copper Washer For Ford 9" & 8" Dropout Housing
Complete Differentials

What are the top-rated 1978 Mercury Bobcat Differentials?

Top-rated Differentials for your 1978 Mercury Bobcat based on customer reviews/ratings are:
Multi Purpose Seal
from $11.79
(2)
Multi Purpose Seal
“Worked great on this 1966 Mustang w/ 8″ rear end.”
Differential Crush Sleeve
from $2.49
(1)
Differential Crush Sleeve
“High quality, would buy again”
Shaft Repair Sleeve
from $37.99
(1)
Shaft Repair Sleeve
“Very delicate piece, but came shipped quite safely and not damaged. High quality.”