1961 Mercury Comet Differentials

Keep Your 1961 Mercury Comet in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1961 Mercury Comet looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Pinion Shaft Bearings, Differential Bearings, and Differential Pinion Seals. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Top-Rated Differentials from Trusted Brands

Looking for a reliable Differential? We’ve got you covered with options from brands you know and trust like National. For example, National Differentials start at just $12.99 with an average 4.3 star rating. With over 84 reviews and a solid 5 star average, you can shop with confidence knowing other Mercury Comet owners approve.

Competitive Prices and Extensive Inventory

The average price for a 1961 Mercury Comet Differential at Advance Auto Parts is around $131.36, with a range that starts at $10.79 and goes up to $883.99. With 15 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Shaft Repair Sleeve, Bearing Race, and Bearing Race start at just $10.79 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Differential, don’t forget to check out other key components like Drive Shafts and Axles and Universal Joints. At Advance Auto Parts, we’re here to help you keep your 1961 Mercury Comet in peak condition, inside and out.

Essential 1961 Mercury Comet Differentials

FAG US – Shaft Seal (Part No.SS2934)

Shaft Seal

from

$21.79
Our wheel seals are engineered using only the highest-quality materials to meet vehicle manufacturer specificatons. We work with suppliers to design seals that meet FAG’s quality standards. Seals are designed to protect wheel end components from contamination – such as dirt, dust, and moisture – and prevent the loss of grease over the life of the bearing. The specifications for wheel seals are very demanding, and the type required depends on the specific application, position and vehicle class.

Product Features:
  • High-precision and High-quality components used in all KITs
  • Coverage of classic and new high-tech solutions for the best system coverage
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Motive Gear – Differential Pinion Seal (Part No.8181NA)

Differential Pinion Seal

from

$9.99
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 – 7.25" Ford & 6.75" Ford Pinion Seal (Part No.30173)

7.25" Ford & 6.75" Ford Pinion Seal

from

$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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Pro-King – Differential Crush Sleeve (Part No.761A034)

Differential Crush Sleeve

from

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

Pinion Crush Sleeves

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

Redline Synthetic "Shock Proof" Oil - 3 Quarts

from

$99.99
Redline Synthetic “Shock Proof” Oil. 3 Quarts.

Product Features:
  • Includes three quarts of Redline Shockproof oil
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Yukon Gear – Redline Synthetic "Shock Proof" Oil – 4 Quarts (Part No.15004)

Redline Synthetic "Shock Proof" Oil - 4 Quarts

from

$137.99
Redline Synthetic “Shock Proof” Oil. 4 Quarts.

Product Features:
  • Includes four quarts of Redline Shockproof oil
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Yukon Gear – The Carrier Bearing Puller (Part No.56072)

The Carrier Bearing Puller

from

$883.99
The Yukon carrier bearing Puller works with an impact gun to quickly and safely remove carrier bearings without damaging them. This unit comes with a handy bench top stand and works with up to one ton applications including Dana 70HD, Dana 80, 10.25″ & 10.5″ Ford, or GM & Chrysler 11.5″ differentials.

Product Features:
  • Carrier bearing puller
  • Works with an impact gun to safely and easliy remove carrrier bearings
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National – Multi-Purpose Bearing (Part No.A-5)

Multi-Purpose Bearing

from

$16.99
Product Features:
  • CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
  • SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
  • OE-STYLE DESIGN: Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
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USA Standard Gear – Master Overhaul Kit for the Ford 9" LM603011 Differential with Daytona Pinion Support (Part No.37038)

Master Overhaul Kit for the Ford 9" LM603011 Differential with Daytona Pinion Support

from

$273.99
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 and Daytona pinion support
  • 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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USA Standard Gear – 9" Ford Pinion Kit, Koyo Bearings (Part No.60002)

9" Ford Pinion Kit, Koyo Bearings

from

$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 – Minor Install Kit For Ford 9" Differential (Part No.12036)

Minor Install Kit For Ford 9" Differential

from

$54.99
Yukon Minimum installation kits are a low cost solution for gear changes in newer vehicles where the bearings can be reused. This kit uses all high quality components to ensure a smooth set up. kit includes a pinion seal, crush sleeve (if applicable), marking compound and brush.

Product Features:
  • Fits Ford 9″
  • Included are a pinion seal, crush sleeve , complete shim kit, marking compound and brush.
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USA Standard Gear – Master Overhaul Kit for the Ford 8" Differential w/ HD Posi (Part No.37029)

Master Overhaul Kit for the Ford 8" Differential w/ HD Posi

from

$249.99
USA Standard Master Overhaul kits let you finish your install with confidence. This kit uses Koyo bearings and races. Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve (if applicable), oil baffles and slingers (if applicable), threading locking compound, marking compound with brush and gasket.

Product Features:
  • Fits Ford 8″ with aftermarket positraction
  • Uses Koyo bearings and races
  • Included are carrier bearings and races, pinion bearings and races, pinion seal, complete shim kit, ring gear bolts, pinion nut, crush sleeve, thread locker, marking compound with brush and gasket.
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National – Bearing Race (Part No.HM89410)

Bearing Race

from

$10.79
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.

Product Features:
  • PREMIUM MATERIALS – Precision manufactured using premium-grade steel for outstanding durability and performance
  • SMOOTH ROTATION – Crowned raceways for even load distribution
  • OE-STYLE DESIGN – Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE – Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING – Comprehensive testing throughout design and development processes by National engineers for quality you can count on
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Yukon Gear – Pilot Bearing For Ford 9" (Part No.18042)

Pilot Bearing For Ford 9"

from

$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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National – Shaft Repair Sleeve (Part No.99199)

Shaft Repair Sleeve

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
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Yukon Gear – 7.5", 8", 8.8", 9", 10.25" Ford Redi Sleeve Yoke Saver (Part No.30226)

7.5", 8", 8.8", 9", 10.25" Ford Redi Sleeve Yoke Saver

from

$30.99
7.5″, 8″, 8.8″, 9″, 10.25″ Ford REDI sleeve yoke saver.Yukon Mighty seal.

Product Features:
  • Redi-Sleeve yoke saver
  • Fits Ford 7.5″, 8.8″, 9″ and 10.25″
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National – Shaft Repair Sleeve (Part No.99181)

Shaft Repair Sleeve

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
See More

National – Multi-Purpose Bearing (Part No.R-1535-TAV)

Multi-Purpose Bearing

from

$41.99
Product Features:
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
  • STRONG AND DURABLE: Controlled heat treatment process for strength and durability
  • OE-STYLE DESIGN: Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
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FAG US – Repair Sleeve (Part No.SR3506)

Repair Sleeve

from

$53.99
The FAG repair sleeve is a precision element that provides additional sealing for damaged shafts. Made of heat-treated stainless steel, the FAG repair sleeve signifcantly increases the life of the shaft and prevents premature wear. Since no shaft removal or machining is required during the repair, the repair sleeve is a cost effective repair solution to protect damaged surfaces.

Product Features:
  • High-precision and High-quality components used in all KITs
  • Coverage of classic and new high-tech solutions for the best system coverage
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National – Multi-Purpose Bearing (Part No.A-13)

Multi-Purpose Bearing

from

$13.79
Product Features:
  • CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
  • SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
  • OE-STYLE DESIGN: Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

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

Tapered Cone/Cup Wheel Bearing Set

from

$26.99
Value-priced bearing meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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National – Multi-Purpose Bearing (Part No.A-37)

Multi-Purpose Bearing

from

$18.99
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
See More

FAG US – Bearing – TRB (Tapered Roller Bearing) (Part No.KT13)

Bearing - TRB (Tapered Roller Bearing)

from

$20.29
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
See More

Yukon Gear – 8" Ford Pilot Bearing Retainer (Part No.33254)

8" Ford Pilot Bearing Retainer

from

$13.99
8″ Ford pilot bearing retainer.

Product Features:
  • Pilot bearing retainer for Ford 8″
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FAG US – Bearing – TRB (Tapered Roller Bearing) (Part No.KT5)

Bearing - TRB (Tapered Roller Bearing)

from

$21.29
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
See More

Most Popular Pinion Shaft Bearing for 1961 Mercury Comets

Enhance your 1961 Mercury Comet with this popular Pinion Shaft Bearing we have in stock, for $16.99.

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

Multi-Purpose Bearing

from

$16.99
Product Features:
  • CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
  • PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
  • SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
  • OE-STYLE DESIGN: Engineered to meet OE specifications
  • COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
  • RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
See More

Best-Selling 1961 Mercury Comet Differential Bearings

Upgrade your Comet with one of our 2 best-selling Differential Bearings.

National – Bearing Race (Part No.LM29710)

Bearing Race

from

$16.49
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
See More

FAG US – Cone (Part No.KM86649)

Cone

from

$24.29
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
See More

Top-Quality Differential Pinion Seals for 1961 Mercury Comets

Choose a high-quality OEM or aftermarket Differential Pinion Seal for Mercury Comets and enjoy top-notch performance from $12.99.

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

Multi-Purpose Seal

from

$12.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

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

from

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

Product Features:
  • Pinion seal
  • Fits Ford 6.75″ and 7.25″
See More

Our Top Pick for a 1961 Mercury Comet Differential Crush Sleef

Invest in a durable Differential Crush Sleef for your 1961 Mercury, knowing you’re getting trusted brands and expert craftsmanship.

Yukon Gear – 7.25" Ford Crush Sleeve – 2.00" Long (Part No.33084)

7.25" Ford Crush Sleeve - 2.00" Long

from

$34.99
7.25″ Ford crush sleeve. 2.00″ long.

Product Features:
  • Crush sleeve
  • Fits Ford 7.5″
  • 2.00″ tall
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Differential Oil for 1961 Mercury Comets

Make a smart move for your 1961 Mercury Comet with products all priced from $99.99 to $148.99.

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

Redline Synthetic "Shock Proof" Oil - 3 Quarts

from

$99.99
Redline Synthetic “Shock Proof” Oil. 3 Quarts.

Product Features:
  • Includes three quarts of Redline Shockproof oil
See More

Yukon Gear – Redline Synthetic "Shock Proof" Oil – 4 Quarts (Part No.15004)

Redline Synthetic "Shock Proof" Oil - 4 Quarts

from

$137.99
Redline Synthetic “Shock Proof” Oil. 4 Quarts.

Product Features:
  • Includes four quarts of Redline Shockproof oil
See More

Top-Rated Differential Brands For Your 1961 Mercury Comet

When it comes to finding the perfect Differential for your 1961 Mercury Comet, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 3 trusted brands. We carry the most popular Differential brands including National, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $12.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1961 Mercury Comet, providing peace of mind with parts that meet or exceed OEM standards.

Popular National 1961 Mercury Comet Differentials

If you’re looking for a top-quality Differential for your 1961 Mercury Comet, Advance Auto Parts has exactly what you need with our selection of National Differentials. We have 3 National Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $12.99 and an average cost of $22.66, you’ll find the perfect Differential for your needs and budget. National Differentials for the 1961 Mercury Comet come highly rated, with over 42 customer reviews and an impressive average rating of 4.3 stars. Choosing a National Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
Shaft Repair Sleeve
from $37.99
(1)
Shaft Repair Sleeve
“Very delicate piece, but came shipped quite safely and not damaged. High quality.”
Multi-Purpose Seal
from $12.99
(2)
Multi-Purpose Seal
“Worked great on this 1966 Mustang w/ 8″ rear end.”
Multi-Purpose Bearing
from $16.99
(39)
Multi-Purpose Bearing
“Great bearings”

FAQs for 1961 Mercury Comet Differentials

What are the best-selling Differentials for 1961 Mercury Comets?

Out of 15 Differentials that fit 1961 Mercury Comets, the following parts are the top sellers:

What’s the price range for 1961 Mercury Comet Differentials?

The prices of Differentials for the 1961 Mercury Comet range from $10.79 up to $883.99 for the most premium parts.

What is the average price of a Differential for a 1961 Mercury Comet?

The average price for Differentials for the 1961 Mercury Comet is $131.36. Keep in mind the variety of part types within our Differential category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Differentials for other Mercury Comet model years?

Yes, we carry Differentials for 15 model years of Mercury Comets between 1960 and 1977. The following model years are the most popular for Differential purchases: 1977, 1976, 1975, 1974, 1973, 1972, 1971, 1969, and 1968.

What are the cheapest Differentials for my 1961 Mercury Comet?

The cheapest 1961 Mercury Comet Differentials we carry are:

Does Advance Auto Parts sell Differentials for any other 1961 Mercury models?

Yes. We stock Differentials for 3 other popular 1961 Mercury models. Some of the most popular are 1961 Monterey Differentials, 1961 Colony Park Differentials, 1961 Commuter Differentials, and 1961 Meteor Differentials.

What types of Differentials do you sell for my 1961 Mercury Comet?

As of 11/2/25, these are some of the most in-demand types of Differentials for a 1961 Mercury Comet:

Can I get help with 1961 Mercury Comet Differential orders?

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

What is your return policy for Mercury Comet Differentials?

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