1970 Mercury Cougar Differentials

Keep Your 1970 Mercury Cougar in Top Shape with Quality Differentials

Whether you’re repairing or upgrading your Differential, using high-quality parts is key to keeping your 1970 Mercury Cougar looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Differential Oil, Differential Pinion Seals, and Differential Bearings. 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, FELPRO, and Powertrax. For example, National Differentials start at just $7.99 with an average 4.3 star rating. FELPRO and Powertrax offer similar pricing and quality, backed by strong customer feedback. With over 1,617 reviews and a solid 4 star average, you can shop with confidence knowing other Mercury Cougar owners approve.

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 1970 Mercury Cougar in peak condition, inside and out.

Essential 1970 Mercury Cougar Differentials

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

Trac Loc Clutch Guide For 9" Ford

from

$4.99
Trac Loc clutch guide for 9″ Ford.

Product Features:
  • Clutch guide
  • Fits Ford 8″ and 9″
See More

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

Differential Carrier Gasket Oval Shaped 10 Bolt Hole Gasket

from

$9.99
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
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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

from

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

Outer Oil Slinger For Ford 7.5", 8.8", 9", 10.25"

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
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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

from

$5.99
Product Features:
  • Side gear thrust washer for Ford 8″, Ford 9″ and AMC Model 20
  • 0.030″ thick
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Motive Gear – Differential Pinion Solid Spacer Kit w/Shims (Part No.SS9)

Differential Pinion Solid Spacer Kit w/Shims

from

$45.99
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 – Trac Loc Spring For Ford 9" & 8" (Part No.33518)

Trac Loc Spring For Ford 9" & 8"

from

$8.99
Product Features:
  • Trac Loc spring for Ford 8″ and 9″
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Yukon Gear – Grizzly Locker For Ford 8" With 31 Spline Axles (Part No.28007)

Grizzly Locker For Ford 8" With 31 Spline Axles

from

$941.99
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 is a mechanical locking differential. It features a forged case and 8620 internals for maximum strength. It’s patented design reduces common locker failures. All units assembled in the USA! 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!

Product Features:
  • Fits Ford 8″ with 31 spline axles
  • Patented internal design reduces common locker failures
  • 8620 internals for added strength
  • Assembled in the USA
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Yukon Gear – Tracloc Clutch Set (Two Sides) For 7.5" Ford (Part No.16013)

Tracloc Clutch Set (Two Sides) For 7.5" Ford

from

$264.99
TracLoc clutch set (two sides) for 7.5″ Ford.

Product Features:
  • Clutch kit
  • Fit Ford 7.5″ Trac Loc positraction
See More

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
See More

Yukon Gear – Crush Sleeve (Part No.33085)

Crush Sleeve

from

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

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

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

Yukon Gear – Bearing Race Driver (Part No.56023)

Bearing Race Driver

from

$219.99
Bearing race driver. No return.

Product Features:
  • Bearing race driver
  • Fits M88010 race
  • All steel construction
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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

from

$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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Richmond Gear – RngPnnInstlKt (Part No.83-1013-1)

RngPnnInstlKt

from

$187.99
RngPnnInstlKt

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

Grip LS Traction System

from

$451.99
For vehicles that are driven daily, the Powertrax No-Slip Traction System is the latest design in quiet traction-adding differential technology. It combines the automatic street-friendly smooth operation of a limited-slip differential with the traction performance of a locking differential. The Powertrax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Powertrax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Powertrax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds!
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Motive Gear – Differential Lock Thrust Block (Part No.D3SZ4211A)

Differential Lock Thrust Block

from

$47.49
Motive Gear offers some of the toughest drive train components on the market today. If you are looking for the largest line of performance ring and pinion gear options available with gear sets in a wide range of ratios for nearly every application, both on and off-road, check out Motive Gear. Motive Gear products can be found in the winner’s circle at racing events worldwide. The superior quality of Motive Gear components is the result of years of racing development, outstanding design and state-of-the-art manufacturing methods. Extensive testing is performed on all products by our in-house engineers.
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Richmond Gear – RngPnn (Part No.79-0054-1)

RngPnn

from

$538.99
RngPnn

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

Pinion Depth Shims For Ford 9"

from

$26.99
Pinion depth shim kit 9″ Ford.

Product Features:
  • Pinion depth shims for Ford 9″
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USA Standard Gear – 9" Ford Spartan Locker Cross Pin, Long (Part No.17021)

9" Ford Spartan Locker Cross Pin, Long

from

$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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Yukon Gear – Set Up Bearing (Part No.56045)

Set Up Bearing

from

$153.99
M802048 set-up bearing (one bearing). No return.

Product Features:
  • Set up bearing
  • Fits M802048 pinion bearing
  • Easily slips on and off pinion journal to allow for easier pinion depth adjustment
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Yukon Gear – Purple Aluminum Pinion Supprt For 9" Ford Daytona (Part No.32161)

Purple Aluminum Pinion Supprt For 9" Ford Daytona

from

$219.99
Product Features:
  • Fits Ford 9″ with 28 spline pinion
  • Larger inner pinion bearing reduces gear deflection under high load
  • 6061 aluminum
  • Annodized purple
  • Does not include races
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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

from

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

Product Features:
  • Side adjuster lock bolt
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Motive Gear – Differential Pinion Nut (Part No.379570S)

Differential Pinion Nut

from

$6.99
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!
See More

Yukon Gear – Pilot Bearing For Ford 8" (Part No.18043)

Pilot Bearing For Ford 8"

from

$40.99
9.25 Chrysler FRONT PINION KIT , 03 & UP DODGE TRUCK .

Product Features:
  • Pilot bearing
  • Fits Ford 8″
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Felpro – Axle Housing Cover Gasket Round Shaped 10 Bolt Hole Gasket (Part No.RDS 55460)

Axle Housing Cover Gasket Round Shaped 10 Bolt Hole Gasket

from

$8.99
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
  • Engineered for the sealing repair environment
  • Validated for fit, form and function
  • Unsurpassed quality you can trust
See More

Yukon Gear – Pinion Install Kit For Ford Daytona 9" Differential (Part No.13048)

Pinion Install Kit For Ford Daytona 9" Differential

from

$294.99
Yukon Pinion installation kits are a terrific solution for gear installation on lower mileage vehicles where the carrier bearings & races can be reused. This kit uses Timken bearings and races along with a high quality pinion seal and small parts. Included in this kit are the pinion bearings and races, pilot bearing (if applicable), crush sleeve (if applicable), complete pinion shim kit, pinion nut, thread locker, and marking compound with brush. Yukon does extensive research for each application to make sure your kit will arrive with all the correct parts you need to install your pinion gear.

Product Features:
  • Fits Ford 9″ with Daytona pinion support
  • Included are pinion bearings and races, pinion seal, pinion nut, crush sleeve, complete pinion shim kit, and marking compound with brush.
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Yukon Gear – O-Ring For 9" Ford (Part No.30028)

O-Ring For 9" Ford

from

$14.99
O-ring for 9″ Ford.Yukon Mighty seal.

Product Features:
  • Pinion support o-ring
  • Fits Ford 9″
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Most Popular Differential Oil for 1970 Mercury Cougars

Enhance your 1970 Mercury Cougar with one of the 3 Differential Oil we have in stock, starting at just $99.99.

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
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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
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

Best-Selling 1970 Mercury Cougar Differential Pinion Seals

Upgrade your Cougar with one of our 6 best-selling Differential Pinion Seals, earning an average 3 stars rating across 3 reviews.

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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Driveworks – Oil Seal (Part No.S-7044NA)

Oil Seal

from

$6.49
Value-priced seal meets all cataloged application requirements.

Product Features:
  • Brand may vary by location
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Yukon Gear – Pinion Seal For ’61-’85 9" Ford (Part No.30137)

Pinion Seal For '61-'85 9" Ford

from

$17.99
Pinion seal for ’61-’85 9″ Ford. 3″ OD.Yukon Mighty seal.

Product Features:
  • Pinion seal
  • Fits 1961-1985 Ford 9″
  • 3.00″ O.D.
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Yukon Gear – 8" Ford Pinion Seal (Part No.30180)

8" Ford Pinion Seal

from

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

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

Motive Gear – Differential Pinion Seal (Part No.7044NA)

Differential Pinion Seal

from

$12.99
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!
See More

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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Top-Quality Differential Bearings for 1970 Mercury Cougars

Choose a high-quality OEM or aftermarket Differential Bearing for Mercury Cougars and enjoy top-notch performance from $7.79.

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
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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 – Bearing Race (Part No.LM102910)

Bearing Race

from

$7.79
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
See More

National – Bearing Race (Part No.LM501310)

Bearing Race

from

$8.49
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

Yukon Gear – Pilot Bearing Retainer For Ford 9" (Part No.33255)

Pilot Bearing Retainer For Ford 9"

from

$11.99
Pilot bearing retainer for Ford 9″.

Product Features:
  • Pilot bearing retainer for Ford 9″
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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.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
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FAG US – Cup (Part No.M88010)

Cup

from

$11.29
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
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Top Picks for 1970 Mercury Cougar Differential Ring Gear Bolts

Invest in one of our 6 durable Differential Ring Gear Bolts for your 1970 Mercury, knowing you’re getting trusted brands and expert craftsmanship.

Yukon Gear – Ford 8" & 9" Standard Open, Ag, & Detroit Locker Ring Gear Bolt (Part No.33058)

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

Ford 8" & 9" Tracloc Ring Gear Bolt

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
See More

Motive Gear – Ring Gear Bolt (Part No.D8OZ4216B)

Ring Gear Bolt

from

$1.99


Product Features:
  • BOLT 9″ FORD OPEN R.G. SAME AS M-4216A200
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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)

For Use With Ford 9" Using 5/8"Socket, 0.94"L Under Head, 7/16"-20, 12Point Head

from

$43.99
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
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Yukon Gear – Trac Loc Ring Gear Bolt Washer For 8" And 9" Ford (Part No.33245)

Trac Loc Ring Gear Bolt Washer For 8" And 9" Ford

from

$3.99
Trac Loc ring gear bolt washer for 8″ and 9″ Ford.

Product Features:
  • Ring gear bolt for Ford 8″ and 9″
  • For Trac Loc positraction applications only
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Rear Differential Cover Gaskets for 1970 Mercury Cougars

Make a smart move for your 1970 Mercury Cougar with products all priced from $11.99.

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

9" Ford Gasket

from

$11.99
9″ Ford gasket.

Product Features:
  • Dropout gasket
  • Fits Ford 9″
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Yukon Gear – 8" Dropout Housing Gasket (Part No.23010)

8" Dropout Housing Gasket

from

$11.99
8″ dropout housing gasket.

Product Features:
  • Dropout gasket
  • Fits Ford 8″
See More

Top-Rated Differential Brands For Your 1970 Mercury Cougar

When it comes to finding the perfect Differential for your 1970 Mercury Cougar, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 13 trusted brands. We carry the most popular Differential brands including Powertrax, FELPRO, and National, and more, all known for their exceptional customer ratings (average brand rating of 4.7 stars) and competitive prices, as low as $7.99. Purchasing a Differential from us here at Advance Auto Parts is a smart move for both you and your 1970 Mercury Cougar, providing peace of mind with parts that meet or exceed OEM standards.

Popular Powertrax 1970 Mercury Cougar Differentials

If you’re looking for a top-quality Differential for your 1970 Mercury Cougar, Advance Auto Parts has exactly what you need with our selection of Powertrax Differentials. We have 1 Powertrax Differentials in stock for this fitment, all known for their durability and precision fit. With prices starting at just $551.99, you’ll find the perfect Differential for your needs and budget. Powertrax Differentials for the 1970 Mercury Cougar come highly rated, with over 1 customer reviews and an impressive average rating of 4.7 stars. Choosing a Powertrax Differential from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
No-Slip Traction System
from $551.99
(1)
No-Slip Traction System
“Installed, no issues, works great.”

Top-Quality FELPRO 1970 Mercury Cougar Differentials

For those in search of a high-quality Differential for their 1970 Mercury Cougar, Advance Auto Parts offers a great selection of FELPRO Differentials. With 1 FELPRO Differentials in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Differentials start at just $9.99, giving you a range of options to suit your budget. Backed by over 9 customer ratings and an average rating of 4.6 stars, FELPRO Differentials provide both reliability and excellent performance. Choosing a FELPRO Differential from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
Differential Carrier Gasket Oval Shaped 10 Bolt Hole Gasket
from $9.99
(9)
Differential Carrier Gasket Oval Shaped 10 Bolt Hole Gasket
“Right fit the first time.”

FAQs for 1970 Mercury Cougar Differentials

What are the best-selling Differentials for 1970 Mercury Cougars?

Out of 372 Differentials that fit 1970 Mercury Cougars, the following parts are the top sellers:

What’s the price range for 1970 Mercury Cougar Differentials?

The prices of Differentials for the 1970 Mercury Cougar range from $1.99 up to $1,211.99 for the most premium parts.

What is the average price of a Differential for a 1970 Mercury Cougar?

The average price for Differentials for the 1970 Mercury Cougar is $271.70. 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 Cougar model years?

Yes, we carry Differentials for 33 model years of Mercury Cougars between 1967 and 2002. The following model years are the most popular for Differential purchases: 2002, 2001, 2000, 1999, 1997, 1996, 1995, 1994, and 1993.

What are the cheapest Differentials for my 1970 Mercury Cougar?

The cheapest 1970 Mercury Cougar Differentials we carry are:

Does Advance Auto Parts sell Differentials for any other 1970 Mercury models?

Yes. We stock Differentials for 6 other popular 1970 Mercury models. Some of the most popular are 1970 Monterey Differentials, 1970 Marauder Differentials, 1970 Colony Park Differentials, 1970 Montego Differentials, and 1970 Capri Differentials.

What are the top-rated Differentials that fit the 1970 Mercury Cougar?

The one 1970 Mercury Cougar Differential we have in stock is the Ring Gear Bolt. It costs $1.99.

What types of Differentials do you sell for my 1970 Mercury Cougar?

As of 11/2/25, these are some of the most in-demand types of Differentials for a 1970 Mercury Cougar:

Can I get help with 1970 Mercury Cougar 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 Cougar Differentials?

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