1971 Mercury Comet Drivetrains

Below you will find various in-demand Mercury Drivetrains, components and accessories for your 1971 Comet. Advance Auto Parts has popular Comet parts like Drive Shafts and Axles, Transfer Cases, Differentials and more. You’ll also find aftermarket and OEM Drivetrains for other Comet model years including 1967, 1968, 1969, 1972, 1973, 1974, 1975, 1976, 1977 and more. Select a category of 1971 Mercury Comet Drivetrains below and start saving instantly.

Please Select your Vehicle to See Exact Fit Parts

Popular 1971 Mercury Comet Drivetrains Categories

Differential Oil

U-Joints

Rear Differential Cover Gaskets

Center Support Bearings

Differential Bearings

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

Axle Flange Gaskets

Differential Clutch Packs

Rear Axle Shaft Bearings

Differential Ring and Pinions

U-Joint U-Bolt Kits

Differential Cases

Differential End Yokes

Differential Pinion Supports

Spindle Lock Nuts

Differential Lock Assemblies

Differential Spools

Differential Lock Springs

Differential Carrier Bearing Adjusters

Automatic Transmission Differential Cover Gaskets

Differential Pinion Bearing Kits

Transfer Case Differential Bearings

Drive Shaft Seals

Complete Differentials

Differential Ring Gear Bolts

Bearing Race Drivers

Spindle Lock Nut Thrust Washers

Differential Pinion Shafts

Input Shaft Seals

Spindle Retainers

Differential Crush Sleeves

Differential Side Bearing Spacers

Differential Pinion Shims

Differential Pinion Shaft Nuts

Differential Gear Install Kits

Differential Cross Pins

Mounting Adapter Seals

Differential Housing O-Rings

Differential Side Gear Thrust Washers

Differential Pilot Bearing

Differential Pinion Gear Thrust Washers

Axle Shaft Studs

Differential Drive Pinion Gear Bearing Retainer Bolts

Differential Drive Pinion Oil Deflectors

Spindle Washers

Axle Shaft Bearing Retainers

Differential Pinion Shaft Bearing Retainers

Limited Slip Differential Assemblies

Differential Pinion Bearing Spacers

Differential Clutch Pack Clips

Differential Lock Washers

Differential Bearing Adjuster Nut Lock Bolts

Differential Lock Thrust Blocks

Axle Housing Fill Plugs

Differential Carrier Bearing Races

Drive Shaft Pinion Yoke Washers

Axle Housing End

Essential Drivetrains for 1971 Mercury Comets

from

$569.99

Ford 9″ pinion Support, 35 spline, 10 hole, no races included.

Product Features:

Fits Ford 9″ with 35 spline pinion
Larger inner pinion bearing reduces gear deflection under high load
6061 aluminum
10 bolt holes
Does not include races

from

$38.99

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

Product Features:

Pilot bearing
Fits Ford 9″
0.656″ thick

from

$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

from

$11.29

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

from

$215.99

Bearing race driver. No return.

Product Features:

Bearing race driver
Fits HM89410 race
All steel construction

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

from

$409.99

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
3.55 ratio

from

$451.99

from

$15.49

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$993.99

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 uses 8620 internals and a patented design to provide maximum strength and reduce common failures. Assembled in the USA! This unit has been approved for competition in NASCAR National & Touring series. 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! This locker also fits 9.5″ & 10″ dropouts.

Product Features:

Fits Ford 9″ with 31 spline axles and loadbolt housing
Patented internal design reduces common locker failures
8620 internals for added strength
Assembled in the USA

from

$30.99

Standard open and TracLoc cross pin block for 9″ Ford.

Product Features:

Cross pin block
Fits Ford 9″

from

$279.99

9″ (3/8″ holes) Torino design housing ends for Ford (for 2-5/8″ ID axle tube).

Product Features:

Housing ends
Fits Ford 9″
3 9/16″ x 2″ bolt pattern
3/8″ bolt holes
Set of two

from

$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

from

$137.99

Worn or damaged differential end yoke causing driveline Vibrations! This direct replacement end yoke matches the original equipment part for a trustworthy repair and reliable performance.

Product Features:

Direct replacement – this differential end yoke matches the fit and construction of the original yoke
Excellent value – this replacement end yoke offers original equipment quality at a fraction of the price of dealer parts
Quality materials – this end yoke is machined from cast iron for strength and is precision machined for reliability
Validated fit – this differential end yoke has been tested to confirm accurate fit

from

$94.99

3.062″ side adjuster, Only Fits Yukon Ford 9″ Drop Out, new design ONLY.

Product Features:

Side adjuster
Fits Ford 9″
3.062″ designs only

from

$5.99

Product Features:

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

from

$5.29

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
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

from

$11.99

9″ Ford gasket.

Product Features:

Dropout gasket
Fits Ford 9″

from

$9.99

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

from

$37.99

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

from

$10.99

Yukon Ring & Pinion sets give you the confidence of knowing you’re running gears designed for the harshest of conditions. Whether it’s on the street, off-road, or at the track; Yukon ring & pinion sets deliver unrivaled performance & quality. Yukon uses t

Product Features:

Fill plug
Fits Ford 9″

from

$3.49

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 Length service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$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!

from

$1070.00

9″ Yukon 3.250″ aluminum case, HD Drop Out housing, with load bolt. Made from A356-T6 aluminum & featuring a through bolt design, this dropout is rated for up to 1400 horsepower!

Product Features:

Fits Ford 9″
3.250″ carrier race diameter
A356-T6 aluminum
Thru-bolt design added strength
With load bolt

from

$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

from

$315.99

Yukon positraction internals for 8″ and 9″ Ford with 28 spline axles, in a 4-pinion design. Yukon uses higher quality materials and better techniques than OEM to ensure a longer lasting spider gear set. This kit does not include clutches. All components come with a one year warranty against manufacturing defects.

Product Features:

Spider gear kit
Fits Ford 9″ with Trac Loc positraction with 28 spline axles
Includes two side gears, four pinion gears, cross pin shaft, roll pin and spider gear thrust washers.

from

$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

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!

Upgrade your 1971 Mercury Comet with Top-Quality Drivetrains

When it comes to maintaining or upgrading your 1971 Mercury Comet, 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 Comet functioning at its best. At Advance Auto Parts, we offer a wide selection of 394 Drivetrains for the 1971 Mercury Comet, designed to meet your needs without breaking the bank. From Drive Shafts and Axle replacements to Transfer Cases 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 1971 Mercury Comet at great prices. Our Drivetrains inventory for this model ranges from just $1.99 to $1,566.99, with an average price of $244.28. Our 394 Drivetrains in stock come from 15 trusted brands, so you’re sure to find the right part for your 1971 Mercury Comet 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 1971 Mercury Comet, we stock popular OEM and aftermarket Drivetrains from top names like Moog, National, Motive Gear, and more. Moog Drivetrains start at just $11.99 and boast an impressive 4.5 stars average rating from customers. National and Motive Gear also bring quality to the table, with Drivetrains available starting at $2.79, and at an average 4.3 stars rating. With 2,825 customer reviews and counting, our 1971 Mercury Comet 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 1971 Mercury Comet is always ready to roll. We’re committed to providing you with everything you need to keep your Comet in top shape, all in one place. Start shopping confidently below for your 1971 Mercury Comet!

Best-Selling Drive Shafts and Axles for 1971 Mercury Comets

Enhance the driving experience in your Mercury with 16 quality Drive Shafts and Axle components, starting at $2.49.

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from

$45.99

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

from

$9.99

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$17.99

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

from

$6.99

Ford 7.5″, 8″, 8.8″, & 9″ axle stud.

Product Features:

Axle stud for Ford 7.5″, 8.8″ and 9″
1/2″ x 20 thread
1 7/8″ long
29/64″ shoulder length

from

$2.49

Meets or exceeds all original equipment specifications
Application specific design to ensure a perfect fit
Engineered for the sealing repair environment
Validated for fit, form and function
Unsurpassed quality you can trust

from

$16.99

9″ 31spline (69-73Mustang & OTHERS) axle seal (1.5″ shaft).Yukon Mighty seal.

Product Features:

Rear axle seal
Fits 1969-1973 Ford Mustang with Ford 9″

from

$26.99

Axle seal.Yukon Mighty seal.

Product Features:

Rear axle seal
Fits Ford 8″
2.264″ O.D.
1.365″ I.D.

from

$10.99

Fill plug
Fits Ford 9″

from

$37.49

Product Features:

BUILT TO LAST: Advanced heat treatment process for strength
PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
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

$67.99

Product Features:

Axle bearing retainer for Ford 9″
Fits large bearing applications
1/2″ bolt holes
3 1/2″ x 2 3/8″ bolt pattern

from

$279.99

9″ (3/8″ holes) Torino design housing ends for Ford (for 2-5/8″ ID axle tube).

Product Features:

Housing ends
Fits Ford 9″
3 9/16″ x 2″ bolt pattern
3/8″ bolt holes
Set of two

from

$92.99

Conversion bearing for small bearing Ford 9″ axle in large bearing housing.

Product Features:

Axle bearing
Fits Ford 9″
Conversion bearing to install small bearing axle into large bearing housing
3.150″ O.D.
1.377″ I.D.

from

$71.99

Adaptor washer for 28 spline pinion in oversize support, for 9″ Ford.

Product Features:

Adapter washer
Fits Ford 9″
Adapts 28 spline pinion into 35 spline pinion support

from

$22.99

Product Features:

Axle bearing retainer for Ford 9″
Fits large and small bearing applications
3/8″ bolt holes
3 9/16″ x 2″ bolt pattern

from

$22.99

Product Features:

Axle bearing retainer for Ford 9″
Fits small bearing applications
3/8″ bolt holes
3 5/16″ x 2″ bolt pattern

from

$5.99

Model 20 & Model 35 axle stud 0.620″ Dia. Shank.

Product Features:

Axle stud for AMC Model 20 and Model 35
1/2″ x 20 thread
0.620″ knurl diameter
1.625″ long

Top Picks for 1971 Mercury Comet Differentials

Upgrade Mercury Comets with top-quality Differentials parts, including 349 OEM and aftermarket selections for your 1971 model.

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from

$9.99

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

from

$12.99

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

$2.79

Product Features:

CRUSH SLEEVE 7.25 & 8.25 MIN ORDER 5000

from

$551.99

from

$6.99

from

$15.49

Value-priced bearing meets all cataloged application requirements.

Product Features:

Brand may vary by location

from

$57.99

3 Qt. Penzoil 80W90 conventional gear Oil. W/ bottle of Posi additive.

Product Features:

Includes three quarts of conventional oil and one 4oz bottle of Yukon positraction additive

from

$44.99

3 Qt. Penzoil 80W90 conventional gear Oil.

Product Features:

Includes three quarts of conventional oil

from

$6.49

This differential crush sleeve is designed to match the fit and function of the original sleeve on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

Direct replacement – this differential crush sleeve is designed to match the fit and function of the original sleeve on specified vehicles
Required replacement – when servicing the differential
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

from

$9.99

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

from

$5.49

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

from

$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

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

from

$8.99

Replacement outer oil slinger for Ford 7.5″, 8.8″, 9″, 10.25″, Nissan Titan rear, Dana 44 Rubicon & 44 JK non-Rubicon.

Product Features:

Outer oil slinger for Ford 10.25″, 7.5″, 8.8″ and 9″ also Jeep JK and Nissan Titan rear

from

$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

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

from

$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

from

$1.99

Product Features:

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

from

$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

from

$11.99

9″ Ford gasket.

Product Features:

Dropout gasket
Fits Ford 9″

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

from

$21.99

8.75″ Chrysler & 9″ Ford preload shim kit.

Product Features:

Preload shim kit for Ford 9″ and Chrysler 8.75″ with ’41’ and ’42’ case housing

from

$25.99

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

Product Features:

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

from

$5.99

Product Features:

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

In-Demand Spindles for 1971 Mercury Comets

Select from 5 premium Spindles parts for your 1971 Mercury Comet, with prices ranging from $2.99 to $6.99.

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from

$3.49

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

from

$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 Length service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$6.99

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 Length service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

from

$4.99

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

from

$2.99

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 Length service life
Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

Most Sold 1971 Mercury Comet Universal Joints

Explore our best-selling Mercury parts for the 1971 Comet among 19 OEM and aftermarket options starting from $6.99.

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from

$11.99

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

from

$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

from

$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

from

$41.49

Backed by superior materials and rigorous testing, MOOG Super Strength universal joints deliver reliable performance you can count on. MOOG problem-solving innovations ensure fast, hassle-free installation.

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
GREASEABLE 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

from

$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

from

$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

from

$27.99

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

from

$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.

from

$31.49

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

$78.99

Yukon 1350 to 1410 conversion u/joint.

from

$27.99

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
GREASEABLE 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

from

$109.99

Yukon 1310 to Mechanics 3R adapter U/Joint.

from

$63.99

Yukon 1350 Lifetime Series U/Joint. 3.625″ snap ring span, 1.188″ cap diameter. Outside snap ring.

from

$51.99

Yukon 1350 U/Joint with zerk fitting. 3.625″ snap ring span, 1.118″ cap diameter. Outside snap ring.

from

$57.99

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

from

$111.99

Yukon 1350 to Mechanics 3R adaptor U/joint.

from

$36.99

Demand genuine Spicer. Dana design, engineering, testing and manufacturing processes all work in conjunction with one another to ensure unparalleled performance that non-genuine parts simply cannot deliver.

Product Features:

Journal cross is engineered with a solid cold-formed body to ensure better wear and overall strength.
Bearing cups are heat treated for strength; precision-ground and case-hardened for durability.
Multi-lip seal keeps grease in and contaminants out, and gets maximum retention in a wider range of environments.
Thrust washers eliminate metal-to-metal contact, prevent wear and lower the overall operating temperature.

from

$31.99

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-Rated Drivetrains Brands For Your 1971 Mercury Comet

Shop for the best-rated brands offering Drivetrains and other products for your 1971 Mercury Comets. Below you’ll find some of our best rated Drivetrains from Moog, National, and Motive Gear, and more. Drivetrains from these brands that fit a 1971 Comet start at just $2.79 and are rated as high as 4.5 stars. OEM and aftermarket Drivetrains don’t get more top quality, durable, and affordable than from the brands below.

Popular Moog 1971 Mercury Comet Drivetrains

When it comes to maintaining or upgrading your 1971 Mercury Comet, using quality Drivetrains is essential to ensure durability and a perfect fit. Moog ticks all of those boxes. We offer a wide selection of Moog Drivetrains, specifically designed for the 1971 Mercury Comet. With over 3 Moog brand Drivetrains in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $11.99, with an average price of just $27.32. Plus, with over 112 customer reviews and an average rating of 4.5 stars, you can trust that our Moog 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 $33.99

(28)

Non-Greaseable Super Strength Universal Joint

“installed as needed”

from $11.99

(2)

Universal Joint U-Bolt Kit

“quality product”

from $35.99

(82)

Greaseable Premium Universal Joint

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

Popular National 1971 Mercury Comet Drivetrains

National auto parts is one of the highest quality Drivetrain brands in the market. Any 1971 Mercury Comet owner should feel confident when installing genuine National parts in their vehicle. To ensure the best fit and performance for your 1971 Comet, Advance Auto Parts carries a full inventory of 3 National Drivetrains. Plus you will be keeping your Mercury in peak condition while saving money because prices on these National Drivetrains range from $12.99 to $45.99, plus, with more than 4 customer reviews and an impressive 4.3 stars average rating, you can be confident the Fram Drivetrains below will deliver on both quality and value.

from $37.99

(1)

Shaft Repair Sleeve

“Very delicate piece, but came shipped quite safely and not damaged. High quality.”

from $12.99

(2)

Multi-Purpose Seal

“Worked great on this 1966 Mustang w/ 8″ rear end.”

from $45.99

(1)

Shaft Repair Sleeve

“To use this sleeve on a torque converter, the supplied tool isn’t long enough. However a piece of PVC pipe can work. (normally this is used on a harmo”

FAQs for 1971 Mercury Comet Drivetrains

Which Drivetrains are best-sellers for 1971 Mercury Comets?

Out of 394 Drivetrains that fit 1971 Mercury Comets, the following parts are the top sellers:

Taper Bearing Set (5050529) – $9.99
Universal Joint (10265714) – $15.99
Multi-Purpose Bearing (3275965) – $17.99

What’s the price range for 1971 Mercury Comet Drivetrains?

Drivetrain prices for the 1971 Mercury Comet start at $1.99 and go up to $1,566.99 for the most premium parts.

What’s the average price of a Drivetrain for a 1971 Mercury Comet?

The average price for Drivetrains for the 1971 Mercury Comet is $244.28. 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 Comet model years?

Yes, we currently carry Drivetrains for 15 model years of Mercury Comets between 1960 and 1977. Drivetrains are bought most frequently for the following model years: 1977, 1976, 1975, 1974, 1973, 1972, 1969, 1968, and 1967.

What are the cheapest Drivetrains for my 1971 Mercury Comet?

The cheapest 1971 Mercury Comet Drivetrains we carry in stock are:

Ring Gear Bolt (19640279) – $1.99
Drive Axle Shaft Flange Gasket 4 Bolt Hole Gasket, 2.688 Inch Inside Diameter (3215571) – $2.49
Differential Crush Sleeve (20520219) – $2.79
Differential Crush Sleeve (10592883) – $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 1971 Mercury Comet?

Out of 2,825 reviews by customers, our 1971 Mercury Comet Drivetrains have an average customer rating of . These are some of the highest-rated Drivetrain types for the 1971 Mercury Comet and their top-rated products:

Universal Joints
- Universal Joint U-Bolt Kit (10086976) – $11.99
- Greaseable Super Strength Universal Joint (10086944) – $41.49
- Greaseable Premium Universal Joint (10086900) – $35.99
Differentials
- Universal Joint U-Bolt Kit (10086976) – $11.99
- Greaseable Super Strength Universal Joint (10086944) – $41.49
- Greaseable Premium Universal Joint (10086900) – $35.99

What types of Drivetrains do you sell for my 1971 Mercury Comet?

As of 3/1/26, these are some of the most in-demand types of Drivetrains for a 1971 Mercury Comet:

Can I get help with 1971 Mercury Comet 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 Comet Drivetrains?

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

1971 Mercury Comet Drivetrains

Yukon Gear – Ford 9" Pinion Support, 35 Spline, 10 Hole, No Races Included (Part No.32165)

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

Schaeffler – Cup (Part No.LM48510)

Schaeffler – Cup (Part No.M88010)

Yukon Gear – Bearing Race Driver (Part No.56017)

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

USA Standard Gear – Ring & Pinion Gear Set For Ford 8" In A 3.55 Ratio (Part No.36117)

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

Driveworks – Taper Bearing Cone (Part No.S-LM-102949)

Yukon Gear – Grizzly Locker For Ford 9" With 31 Spline Axles, Fits Load Bolt Housing (Part No.28033)

Yukon Gear – Standard Open And Tracloc Cross Pin Block For 9" Ford (Part No.33336)

Yukon Gear – Ford 9" (3/8" Holes) Torino Design Housing Ends (Part No.32160)

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

Dorman – Differential Pinion Yoke Assembly (Part No.697-530)

Yukon Gear – 3.062" Side Adjuster For Ford 9" (Part No.32139)

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

Felpro – Drive Axle Shaft Flange Gasket 4 Bolt Hole Gasket, 2.656 Inch Inside Diameter (Part No.5578)

Yukon Gear – 9" Ford Gasket (Part No.23012)

Felpro – Differential Carrier Gasket Oval Shaped 10 Bolt Hole Gasket (Part No.RDS 55074)

National – Shaft Repair Sleeve (Part No.99199)

Yukon Gear – Fill Plug For Ford 9", 1/2" Thread (Part No.33539)

Dorman – Standard Spindle Nut 3/4 In.-16 Hex Size 1-1/16 In. (Part No.615-072.1)

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

Yukon Gear – 9" 3.250" Aluminum Case, HD Drop Out Housing, With Load Bolt (Part No.32152)

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

Yukon Gear – Positraction Internals For 8" And 9" Ford With 28 Spline Axles, In A 4-Pinion Design (Part No.16023)

Yukon Gear – Pinion Nut (Part No.33154)

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

National – Shaft Repair Sleeve (Part No.99174)

Driveworks – Taper Bearing Set (Part No.S-A-5)

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

Yukon Gear – Ford 7.5", 8", 8.8", & 9" Axle Stud (Part No.33175)

Felpro – Drive Axle Shaft Flange Gasket 4 Bolt Hole Gasket, 2.688 Inch Inside Diameter (Part No.4978)

Yukon Gear – 9" 31Spline (69-73Mustang & Others) Axle Seal (Part No.30211)

Yukon Gear – Mighty Seal (Part No.30214)

Yukon Gear – Fill Plug For Ford 9", 1/2" Thread (Part No.33539)

National – Multi-Purpose Bearing (Part No.207-L)

Yukon Gear – Axle Bearing Retainer For Ford 9", Large Bearing, 1/2" Bolt Holes (Part No.33467)

Yukon Gear – Ford 9" (3/8" Holes) Torino Design Housing Ends (Part No.32160)

Yukon Gear – Conversion Bearing For Small Bearing Ford 9" Axle In Large Bearing Housing (Part No.18046)

Yukon Gear – Adaptor Washer For 28 Spline Pinion In Oversize Support, For 9" Ford (Part No.32240)

Yukon Gear – Axle Bearing Retainer For Ford 9", Large & Small Bearing, 3/8" Bolt Holes (Part No.33466)

Yukon Gear – Axle Bearing Retainer For Ford 9", Small Bearing, 3/8" Bolt Holes (Part No.33468)

Yukon Gear – Model 20 & Model 35 Axle Stud 1/2"-20 X 1.625" Length, 0.620" Dia – Knurl (Part No.33181)

National – Shaft Repair Sleeve (Part No.99199)

Driveworks – Oil Seal (Part No.S-3638)

National – Multi-Purpose Bearing (Part No.208-LO)

Schaeffler – Cup (Part No.M88010)

Schaeffler – Cup (Part No.LM102910)

Felpro – Differential Carrier Gasket Oval Shaped 10 Bolt Hole Gasket (Part No.RDS 55074)

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

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

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

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

Driveworks – Taper Bearing Cone (Part No.S-LM-102949)

Yukon Gear – 3 Qt – 80W90 Conventional Gear Oil With Posi Additive (Part No.15003)

Yukon Gear – 3 Qt – Penzoil 80W90 Conventional Gear Oil (Part No.15002)

Dorman – Help – Pinion Crush Sleeves (Part No.81056)

National – Bearing Race (Part No.M86610)

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

Yukon Gear – Crush Sleeve (Part No.33093)

Yukon Gear – Crush Sleeve (Part No.33085)

Yukon Gear – Outer Oil Slinger For Ford 7.5", 8.8", 9", 10.25" (Part No.33022)

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 – 9" Ford Gasket (Part No.23012)

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

Yukon Gear – Preload Shim Kit For Chrysler 8.75" & Ford 9" (Part No.55030)

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

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

Dorman – Spindle Nut 13/16 In.-20 Hex Size 1-1/8 In. (Part No.615-075.1)

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)

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