1966 Mercury Comet Differentials

Name: Trac-Loc For Ford 8" Wtih 28 Spline Axles - Street Design
Brand: Yukon Gear
SKU: 26002
Price: 889.99 USD

Find your specific 1966 Mercury Comet original or aftermarket Differentials below. Order your parts online and have delivered to your home or pick up in-store at Advance Auto.

Essential 1966 Mercury Comet Differentials

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$889.99

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 8″ with 28 spline axles
Trac Loc positraction
Clutch style positraction
Street 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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$577.99

RngPnn

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$43.99

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

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$23.79

CONE

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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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$8.99

Product Features:

Trac Loc spring for Ford 8″ and 9″

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$19.79

SHAFT SEAL

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$26.99

Pinion depth shim kit 9″ Ford.

Product Features:

Pinion depth shims for Ford 9″

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$236.99

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 9″ with LM603011 carrier races
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, pilot bearing, thread locker, marking compound with brush and gasket.

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$319.99

Yukon yoke (short, for Daytona support) for Ford 9″ with 28 spline pinion and a 1310 U/joint size. 3.219″ snap ring span, 1.062″ cap diameter. Outside snap ring. 4″ length. All Yukon yokes come with a one year warranty against manufacturing defects.

Product Features:

Fits Ford 9″
28 spline
1310 u-joint size
3.219″ snap ring span
1.062″ cap diameter
Outside snap ring design
U-bolt style

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$4.99

STAR washers, 3.062″ Yukon Ford 9″ Drop Out new design ONLY.

Product Features:

Star washer
Fits Ford 9″
3.062″ designs only

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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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$5.99

Product Features:

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

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$38.49

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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$149.99

Product Features:

FULL SPOOL 9″, 28 SPL. LIGHTWEIGHT

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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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$31.99

Product Features:

MINI SPOOL 8″ & 9″ 31 SPLN STL 090431

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$11.99

8″ dropout housing gasket.

Product Features:

Dropout gasket
Fits Ford 8″

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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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$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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$10.49

Product Features:

SOLID SPACER FORD 8.8″ & 9″

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$49.99

Product Features:

USA Standard Gear heavy-duty cross pin shaft
Fits Ford 9″
Works with Spartan Locker or standard open spider gears
Long shaft

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$99.99

Redline Synthetic “Shock Proof” Oil. 3 Quarts.

Product Features:

Includes three quarts of Redline Shockproof oil

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$127.99

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:

KT BRNG.&SEAL FORD MSTR 9

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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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$14.99

O-ring for 9″ Ford.Yukon Mighty seal.

Product Features:

Pinion support o-ring
Fits Ford 9″

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$33.99

Product Features:

MINI INSTALL KIT FORD 9″

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$34.99

The tremendous shock loads generated at launch by most any drag racing vehicle equipped with today sticky tire compounds or the acceleration and deceleration of oval track cars put considerable strain on the ring gear. For this reason, the fastener experts at ARP have developed the Pro Series ring gear bolts. they are forged from premium grade 8740 chrome moly steel and are heat treated to a nominal rating of 200,000 PSI tensile strength. Specially hardened, precision ground washers are included where required. Available to fit most any ring gear setup ranging from popular 9 Inch Ford GM 10 and 12 bolt rear ends to the beefy strange differentials found in top fuel and funny car applications.

Product Features:

Forged From Premium Grade 8740 Chrome Moly Steel
Heat Treated
Nominally Rated At 200,000 PSI Tensile Strength
Specially Hardened, Precision Ground Washers
0.95″ Underhead Length
200,000 PSI
Sold As A Set

Popular 1966 Mercury Comet Differentials Categories

Differential Oil

Rear Differential Cover Gaskets

Differential Open Unit and Components

Differential Bearings

Differential Pinion Pilot Bearings

Differential Carriers

Differential Bearing Kits

Front Differential Pinion Bearings

Differential Spider Gear Kits

Differential Rebuild Kits

Differential Carrier Shim Kits

Differential Pinion Seals

Differential Clutch Packs

Differential Mini Spools

Differential Ring and Pinions

Differential Cases

Differential End Yokes

Differential Pinion Supports

Rear Differential Pinion Bearings

Differential Spools

Differential Lock Springs

Differential Carrier Bearing Adjusters

Automatic Transmission Differential Cover Gaskets

Differential Pinion Bearing Kits

Differential Ring Gear Bolts

Bearing Race Drivers

Differential Crush Sleeves

Differential Side Bearing Spacers

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Gear Install Kits

Differential Cross Pins

Differential Housing O-Rings

Differential Side Gear Thrust Washers

Differential Pilot Bearing

Differential Pinion Gear Thrust Washers

Differential Drive Pinion Gear Bearing Retainer Bolts

Differential Drive Pinion Oil Deflectors

Limited Slip Differential Assemblies

Differential Clutch Pack Clips

Differential Lock Washers

Differential Pinion Bearing Spacers

Differential Bearing Adjuster Nut Lock Bolts

Differential Carrier Bearing Races

Maybe you’re in the middle of a full rebuild of that 1966 Mercury Comet. Maybe you just need a couple of Differentials. Either way, Advance Auto Parts has 403 different Differentials in our inventory ranging from $1.99 to $1,566.99. That means you can find the exact parts or products you need to keep that 1966 Mercury Comet running smoothly.

Differentials are only as good as their brand. We stock 13 different brands to make sure you have plenty of trusted parts to choose from for your 1966 Mercury Comet. Driveworks, Yukon Gear, 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 1966 Mercury Comet, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 159 reviews in this category, some of the top rated parts include Multi Purpose Seal with 5.0 stars and Bearings with 5.0 stars.

So if you’re in the market for aftermarket Differentials to keep your 1966 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 1966 Mercury Comet Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1966 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 Cover Gaskets categories, plus more. For a 1966 Mercury Comet, our most popular Felpro Differentials include:

from $8.49

(9)

Differential Carrier Gasket

Automatic Transmission Differential Cover Gaskets

Top 1966 Mercury Comet Differentials from Driveworks

Driveworks products are another trusted brand when it comes to Differentials for your 1966 Mercury Comet. 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 1966 Mercury Comet Differentials

What are the most purchased Differentials for the 1966 Mercury Comet?

Out of 403 Differentials for the 1966 Mercury Comet, the most popular in our inventory are:

from $57.99

This product is not rated

3 Qt – 80W90 Conventional Gear Oil With Posi Additive

Differential Oil

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

What are the top-rated 1966 Mercury Comet Differentials?

Top-rated Differentials for your 1966 Mercury Comet based on customer reviews/ratings are:

from $15.79

(3)

Multi Purpose Seal

“good quality”

from $38.49

(2)

Bearings

“nice finish and function. Should perform well.”

from $2.49

(1)

Differential Crush Sleeve

“High quality, would buy again”

1966 Mercury Comet Differentials

More 1966 Mercury Comet Differentials

Essential 1966 Mercury Comet Differentials

Yukon Gear – Trac-Loc For Ford 8" Wtih 28 Spline Axles – Street Design (Part No.26002)

Richmond Gear – RngPnn (Part No.69-0368-1)

National – Shaft Repair Sleeve (Part No.99193)

FAG US – CONE (Part No.KLM603049)

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

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

FAG US – SHAFT SEAL (Part No.SS2934)

Yukon Gear – Pinion Depth Shims For Ford 9" (Part No.55056)

USA Standard Gear – Master Overhaul Kit for the Ford 9" LM603011 Differential with Solid Spacer (Part No.37037)

Yukon Gear – Yoke (Short, For Daytona Support) For Ford 9" With 28 Spline Pinion And A 1310 U/Joint Size (Part No.41056)

Yukon Gear – Star Washers, 3.062" Ford 9" Drop Out New Design Only (Part No.32143)

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

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

National – Bearings (Part No.HM89443)

Motive Gear – Differential Spool (Part No.FS9-28LW)

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

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

Yukon Gear – 8" Dropout Housing Gasket (Part No.23010)

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

Yukon Gear – One (1) Specialty Bearing Race To Adapt Small Bearing Journal Into A 3.250" Dropout (Part No.32157)

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

USA Standard Gear – 9" Ford Spartan Locker Cross Pin, Long (Part No.17021)

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

Motive Gear – Differential Master Bearing Kit – Koyo (Part No.R9RMK)

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

Yukon Gear – O-Ring For 9" Ford (Part No.30028)

Motive Gear – Differential Gear Install Kit (Part No.F9IK)

ARP Auto Racing – For Use With Ford 9" Using 5/8"Socket, 0.94"L Under Head, 7/16"-20, 12Point Head (Part No.250-3002)

Popular 1966 Mercury Comet Differentials Categories