1968 Mercury Comet Differentials

Essential 1968 Mercury Comet Differentials

Richmond Gear – Differential Cross Shaft (Part No.CSPF9)

Differential Cross Shaft

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$26.49
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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Yukon Gear – Pilot Bearing For Ford 9" (Part No.18042)

Pilot Bearing For Ford 9"

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$38.99
8.6″ GM 99-08 PINION Bearing & SEAL KIT .

Product Features:
  • Pilot bearing
  • Fits Ford 9″
  • 0.656″ thick
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Motive Gear – Differential Mini Spool (Part No.MS9-31)

Differential Mini Spool

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$31.99


Product Features:
  • MINI SPOOL 8″ & 9″ 31 SPLN STL 090431
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Yukon Gear – 7.25" Ford & 6.75" Ford Pinion Seal (Part No.30173)

7.25" Ford & 6.75" Ford Pinion Seal

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$55.99
7.25″ Ford & 6.75″ Ford pinion seal.Yukon Mighty seal.

Product Features:
  • Pinion seal
  • Fits Ford 6.75″ and 7.25″
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Felpro – Differential Carrier Gasket (Part No.RDS 55074)

Differential Carrier Gasket

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

Differential Gear Install Kit

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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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Yukon Gear – Trac Loc For Ford 9" Wtih 31 Spline Axles – Aggressive Design (Part No.26009)

Trac Loc For Ford 9" Wtih 31 Spline Axles - Aggressive Design

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$784.99
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 Trac Loc uses a nodular case, billet side hat, and forged internals for higher strength than stock Trac-Locs. The units use composite clutches for high performance and long life. All units are Rebuildable. Yukon offers a one year warranty against manufacturing defects.

Product Features:
  • Fits Ford 9″ with 31 spline axles
  • Trac Loc positraction
  • Clutch style positraction
  • Aggressive design
  • Internal gears are manufactured using forged 4320 steel and cut to provide stronger teeth
  • Fully rebuildable
  • Assembled in the USA
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USA Standard Gear – 9" Ford Pinion Kit, Koyo Bearings (Part No.60002)

9" Ford Pinion Kit, Koyo Bearings

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$124.99
9″ Ford pinion kit, Koyo bearings.

Product Features:
  • Fits Ford 9″
  • Uses Koyo bearings and races
  • Included are pinion bearings and races, pinion seal, pinion nut, crush sleeve, marking compound and brush.
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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

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$5.99
Product Features:
  • Side gear thrust washer for Ford 8″, Ford 9″ and AMC Model 20
  • 0.030″ thick
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Pro-King – Differential Crush Sleeve (Part No.761A034)

Differential Crush Sleeve

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

Grip LS Traction System

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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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Yukon Gear – Pinion Nut (Part No.33154)

Pinion Nut

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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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Yukon Gear – Star Washers, 3.250" Ford 9" Drop Out New Design Only (Part No.32144)

Star Washers, 3.250" Ford 9" Drop Out New Design Only

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$4.99
STAR washers, 3.250″ Yukon Ford 9″ Drop Out new design ONLY.

Product Features:
  • Star washer
  • Fits Ford 9″
  • 3.250″ designs only
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USA Standard Gear – Spartan Locker For Ford 9", 28 Or 31 Spline (Part No.17042)

Spartan Locker For Ford 9", 28 Or 31 Spline

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$579.99
The Spartan Locker, by USA Standard Gear, provides reliable traction at a low cost. Give your vehicle great traction and save some cash. Choose a Spartan Locker for better traction. The Spartan locker by USA standard gear is a mechanical locker that replaces the spiders in a standard case. The Spartan locker’s design does not use the thrust washers and has a revolutionary spring and pin design that makes installation a snap! The couplers are made from 9310 steel, for added strength. Each Spartan locker carries a one year warranty against defect. This unit uses the factory side gears.

Product Features:
  • Fits Ford 8″ and 9″ with 28 or 31 spline axles
  • Made from 9310 steel for added strength
  • Works with stock side gears in standard carrier case
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National – Bearings (Part No.M88010)

Bearings

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$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
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Yukon Gear – Trac Loc Clutch Guide For 9" Ford (Part No.33250)

Trac Loc Clutch Guide For 9" Ford

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$4.99
Trac Loc clutch guide for 9″ Ford.

Product Features:
  • Clutch guide
  • Fits Ford 8″ and 9″
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Yukon Gear – One (1) Specialty Bearing Race To Adapt Small Bearing Journal Into A 3.250" Dropout (Part No.32157)

One (1) Specialty Bearing Race To Adapt Small Bearing Journal Into A 3.250" Dropout

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$51.99
One (1) specialty bearing race to adapt small bearing journal into a 3.250″ dropout. This adapter allows the use of a 28 or 31 spline carrier, positraction or locker in a 3.250″ dropout. This is a perfect solution if you are currently running 28 or 31 spline axles but are looking to upgrade to 35 spline later, or are stepping down from 35 spline but don’t want to buy a new dropout.

Product Features:
  • Carrier race
  • Fits Ford 9″
  • Conversion race to install small bearing carrier into 3.250″ dropout
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Yukon Gear – Fine Thread Pinion Support Bolt (Aftermarket Aluminum Only) For 9" Ford (Part No.33243)

Fine Thread Pinion Support Bolt (Aftermarket Aluminum Only) For 9" Ford

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$5.99
Fine thread pinion support bolt (aftermarket aluminum only) for 9″ Ford.

Product Features:
  • Pinion support bolt for Ford 9″
  • 3/8″ x 24 thread
  • 1.5″ long
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Yukon Gear – Standard Open Spider Gear Kit For And 9" Ford With 28 Spline Axles And 4-Pinion Design (Part No.16032)

Standard Open Spider Gear Kit For And 9" Ford With 28 Spline Axles And 4-Pinion Design

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$315.99
Yukon standard open spider gear kit for and 9″ Ford with 28 spline axles and 4-pinion design. 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
  • Fits Ford 8″ and 9″ open differential with 28 spline axles
  • Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers.
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Motive Gear – Differential Pinion Shaft Support Block (Part No.D3SZ4211A)

Differential Pinion Shaft Support Block

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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 o
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Yukon Gear – Adjuster Lock Bolt 3.062" & 3.250" Ford 9" Drop Out (Part No.32149)

Adjuster Lock Bolt 3.062" & 3.250" Ford 9" Drop Out

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$3.99
Adjuster lock bolt 3.062″ & 3.250″ Yukon Ford 9″ Drop Out.

Product Features:
  • Side adjuster lock bolt
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Yukon Gear – 8" Dropout Housing Gasket (Part No.23010)

8" Dropout Housing Gasket

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$11.99
8″ dropout housing gasket.

Product Features:
  • Dropout gasket
  • Fits Ford 8″
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Yukon Gear – The Carrier Bearing Puller (Part No.56034)

The Carrier Bearing Puller

from

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

Tapered Cone/Cup Wheel Bearing Set

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$13.99
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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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

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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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Motive Gear – Differential Pinion Shim Kit (Part No.WAA4663)

Differential Pinion Shim Kit

from

$15.99
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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Yukon Gear – Ford 8" & 9" Standard Open, Ag, & Detroit Locker Ring Gear Bolt (Part No.33043)

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

from

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

Copper Washer For Ford 9" & 8" Dropout Housing

from

$5.99
Product Features:
  • Copper washer
  • Fits Ford 8″ and 9″
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1968 Mercury Comet Differentials

Maybe you’re in the middle of a full rebuild of that 1968 Mercury Comet. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 381 different Differentials in our inventory ranging from $1.99 to $1,211.99. That means you can find the exact parts or products you need to keep that 1968 Mercury Comet 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 1968 Mercury Comet. 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 1968 Mercury Comet, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 1,904 reviews in this category, some of the top rated parts include Bearings with 4.8 stars and Multi Purpose Seal with 5.0 stars.

So if you’re in the market for aftermarket Differentials to keep your 1968 Mercury Comet 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 1968 Mercury Comet Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1968 Mercury Comet 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 Comet 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 Carrier Gaskets categories, plus more. For a 1968 Mercury Comet, our most popular Felpro Differentials include:
Differential Carrier Gasket
from $8.49
(9)
Differential Carrier Gasket
Automatic Transmission Differential Carrier Gaskets

Top 1968 Mercury Comet Differentials from Driveworks

Driveworks products are another trusted brand when it comes to Differentials for your 1968 Mercury Comet. Popular Driveworks parts include:
Taper Bearing Set
from $10.29
(38)
Taper Bearing Set
Differential Bearings
Tapered Cone/Cup Wheel Bearing Set
from $13.99
(14)
Tapered Cone/Cup Wheel Bearing Set
Differential Bearings

FAQs for 1968 Mercury Comet Differentials

What are the most purchased Differentials for the 1968 Mercury Comet?

Out of 381 Differentials for the 1968 Mercury Comet, the most popular in our inventory are:
Bearings
from $16.99
(25)
Bearings
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
Bearings
from $15.99
(9)
Bearings
Front Differential Pinion Bearings

What are the top-rated 1968 Mercury Comet Differentials?

Top-rated Differentials for your 1968 Mercury Comet based on customer reviews/ratings are:
Bearings
from $10.49
(4)
Bearings
“Goes with M88010 bearing cup. Application was the pinion bearing race for a Ford 9 Inch on a 1957 Ford F-100.”
Multi Purpose Seal
from $15.79
(3)
Multi Purpose Seal
“good quality”
Bearings
from $18.79
(3)
Bearings
“as advertised”