1978 Mercury Cougar Drivetrains
Find Your Specific 1978 Mercury Cougar Drivetrains
Below you will find various in-demand Mercury Drivetrains, components and accessories for your 1978 Cougar. Advance Auto Parts has popular Cougar parts like Universal Joints, Drive Shafts and Axles, Spindles and more. You’ll also find aftermarket and OEM Drivetrains for other Cougar model years including
1993,
1994,
1995,
1996,
1997,
1999,
2000,
2001,
2002 and more. Select a category of 1978 Mercury Cougar Drivetrains below and start saving instantly.
Popular 1978 Mercury Cougar Drivetrains Categories
Essential Drivetrains for 1978 Mercury Cougars
Yukon Gear – "Yukon Gear Fine Thread Pinion Support Bolt (Aftermarket Aluminum Only) for 9"" Ford, 33243" (Part No.33243)
from
$5.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – "Yukon Gear Star Washers, 3.250"" Ford 9"" Drop Out New Design Only, 32144" (Part No.32144)
from
$4.99
Yukon Gear & Axle dropouts are heavy duty. They feature upgraded nodular iron construction and a larger-than-OEM design to provide unrivaled strength and reliability in racing and off-road applications.
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Yukon Gear – "Yukon Gear 1.250"" Pinion Adaptor Sleeve (Stock Pinion Into Large Support), 32239" (Part No.32239)
from
$74.99
Yukon Gear & Axle manufactures a full line of top-quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers, and other general maintenance items. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – Yukon Gear R1563Tav Rear Axle Bearing And Seal Kit, 10004 (Part No.10004)
from
$42.99
“Yukon axle bearing & seal kits are specially designed for each application & use all high quality bearings & seals. R1563TAV axle bearing and seal kit, TorringtonBrand, 2.250″” OD, 1.400″” ID. This axle bearing & seal kit services one side only.”
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Motive Gear – Motive Gear Bearing Kit, RA310R (Part No.RA310R)
from
$108.99
Motive Gear Differential Bearing Kits Include Front & Rear Pinion Bearing, Pinion Seal, Carrier Bearings, Pilot Bearing Where Applicable, Gear Marking Compound, Crush Sleeve, Pinion Nut, Brush, Thread Locking Compound And Cover Gasket Or Rtv
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Yukon Gear – "Yukon Gear Posi 12-Shim Kit, GM 8.2""/Gm 8.5""/12T/12P/Ford 8.8""/Cast Iron Vette, 16042" (Part No.16042)
from
$41.99
Yukon Gear & Axle manufactures a full line of top-quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers, and other general maintenance items. You can count on Yukon to fulfill all your differential small parts needs.
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National – National Multi-Purpose Bearing, R-1535-TAV (Part No.R-1535-TAV)
from
$42.49
Manufactured with premium-grade steel, National cylindrical outer races are designed and engineered to meet OE specifications.
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Yukon Gear – "Yukon Gear Yoke (Short, for Daytona Support), Ford 9"", 28 Spline, 1330 U-Joint, 41055" (Part No.41055)
from
$203.99
Yukon Gear and Axle manufactures a complete line of general replacement and performance series of pinion yokes for many street, racing, and heavy-duty off-road applications.
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Yukon Gear – "Yukon Gear Bearing Race Driver for Ford 9"", GM 10.5"", & Chrysler 11.5"" Differentials, 56019" (Part No.56019)
from
$219.99
Yukon Gear & Axle offers a full line of top quality differential tools to save time and money.
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Yukon Gear – Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002 (Part No.15002)
from
$44.99
Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.
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Yukon Gear – "Yukon Gear Trac Loc Spring Plate for Ford 9"" & 8, 33517" (Part No.33517)
from
$10.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – "Yukon Gear Side Gear with Hub for 8"" and 9"" Ford with 28 Splines, 16163" (Part No.16163)
from
$46.99
Yukon Gear & Axle manufactures a full line of top-quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers, and other general maintenance items. You can count on Yukon to fulfill all your differential small parts needs.
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Dorman – Dorman Spindle Washer – I.D. 13/16 In. O.D. 1-21/32 In. Thickness 3/32 In., 618-013.1 (Part No.618-013.1)
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.
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Yukon Gear – "Yukon Gear Fill Plug For Ford 9"", 1/2"" Thread, 33539" (Part No.33539)
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 the latest designs and manufacturing technologies to provide a quiet running gear that is strong and easy to set up. All Yukon ring & pinion sets come standard with a one-year warranty.
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Yukon Gear – "Yukon Gear Master Overhaul Kit for Ford Daytona 9"" LM104911 Differential, 14059" (Part No.14059)
from
$339.99
Yukon Master Overhaul Kits give you all the high-quality parts you need to start and finish every differential job. Yukon offers more tailor-made kits than any other manufacturer in the industry to meet your specific installation needs. This kit uses Timken bearings and races along with high quality seals and small parts. Yukon Master Overhaul Kits are the most comprehensive and complete kits on the market because Yukon does extensive research to ensure that every kit has everything you need for your application.
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Schaeffler – Schaeffler Bearing, BR1682 (Part No.BR1682)
from
$10.99
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.
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Yukon Gear – "Yukon Gear Axle Bearing Retainer with Large & Small Bearing, 3/8"" Bolt Holes, 33466" (Part No.33466)
from
$22.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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National – National Bearing, M86649 (Part No.M86649)
from
$17.29
Manufactured with premium-grade steel, National® taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
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Yukon Gear – "Yukon Gear 7.5"" & 8.8"" Pasenger Car Only IRS Stub Axle Side Seal, 30255" (Part No.30255)
Yukon Gear – Yukon Gear Sealed Axle Bearing, 10057 (Part No.10057)
from
$132.99
Yukon axle bearing and seal kits are specially designed for each application and use high-quality bearings and seals.
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Powertrax – Powertrax Differential Lock Assembly, 1821-LR (Part No.1821-LR)
from
$441.99
For vehicles that are driven daily, the Power Trax 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 Power Trax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Power Trax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Power Trax Grip-Pro and Grip-LS performance limited slips offer smooth dependable torque transfer and traction for the best of both worlds.
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Yukon Gear – "Yukon Gear Trac Loc Clutch Guide for 9"" Ford, 33250" (Part No.33250)
from
$4.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – "Yukon Gear Steel Spool for Ford 9"" with 35 Spline Axles, Small Bearing, 32098" (Part No.32098)
from
$404.99
Yukon Full Spools are a cost-effective way to convert a diff to 100% lockup. Installation is easy as they install in place of your differential carrier assembly. Each Yukon spool is made from high-quality 8620 steel and heat treated for additional strength. A spool is an outstanding choice for dedicated off-road and drag racing vehicles only.
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Schaeffler – Schaeffler Cup, JL69310 (Part No.JL69310)
from
$7.99
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.
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Motive Gear – Motive Gear Differential Internal Carrier Gear Kit, F9-IO (Part No.F9-IO)
Motive Gear – Motive Gear Differential Pinion Shim Kit, 2102 (Part No.2102)
Yukon Gear – "Yukon Gear Spider Gear Kit for Ford 8.8"", 31 Spline, Trac Loc Posi, 16106" (Part No.16106)
from
$363.99
Yukon Gear & Axle spider gear kits feature higher quality materials and better manufacturing techniques than OEM to ensure a longer lasting spider gear set. Kit delivers everything needed for a complete and proper spider gear set replacement.
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Yukon Gear – Yukon Gear Crush Sleeve, 33085 (Part No.33085)
from
$9.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Upgrade your 1978 Mercury Cougar with Top-Quality Drivetrains
When it comes to maintaining or upgrading your 1978 Mercury Cougar, 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 Cougar functioning at its best. At Advance Auto Parts, we offer a wide selection of 339 Drivetrains for the 1978 Mercury Cougar, designed to meet your needs without breaking the bank.
From
Universal Joint
replacements to
Drive Shafts and Axles
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 1978 Mercury Cougar at great prices.
Our Drivetrains inventory for this model
ranges from just $3.35 to $1,211.99, with
an average price of $229.29.
Our 339 Drivetrains in stock come from 17 trusted brands, so you’re sure to find the right part for your 1978 Mercury Cougar 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 1978 Mercury Cougar, we stock popular OEM and aftermarket Drivetrains from top names
like Moog, National, Dorman, and more.
Moog Drivetrains
start at just $25.49 and boast an impressive 4.5 stars average rating from customers.
National and Dorman also bring quality to the table, with Drivetrains available starting at $5.99, and at an average 4.3 stars rating.
With 2,298 customer reviews and counting, our 1978 Mercury Cougar 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 1978 Mercury Cougar is always ready to roll. We’re committed to providing you with everything you need to keep your Cougar in top shape, all in one place.
Start shopping confidently below for your 1978 Mercury Cougar!
Best-Selling Universal Joints for 1978 Mercury Cougars
Enhance the driving experience in your Mercury with 30 quality Universal Joint components, starting at $4.19.
Spicer – Spicer Universal Joint, Greaseable 1330 Series OSR, 5-213X (Part No.5-213X)
from
$44.99
When you see the Spicer name, you know you are buying the highest quality product available. Spicer universal joints are no exception. Dana manufactures a full line of Spicer universal joints that are engineered to ensure longer life for vehicles in a wide variety of applications, from light vehicle to commercial and off-highway.
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MOOG Driveline Products – MOOG Driveline Products Universal Joint U-Bolt Kit, 534-10 (Part No.534-10)
from
$27.49
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.
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MOOG Driveline Products – MOOG Driveline Products Greaseable Premium Universal Joint, 354 (Part No.354)
from
$37.49
Backed by superior materials and rigorous testing, MOOG Premium universal joints deliver reliable performance you can count on. MOOG problem-solving innovations ensure fast, hassle-free installation.
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Driveworks – Driveworks Universal Joint, DW-354 (Part No.DW-354)
from
$32.99
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).
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MOOG Driveline Products – MOOG Driveline Products Non-Greaseable Super Strength Universal Joint, 254 (Part No.254)
from
$25.49
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.
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Driveworks – Driveworks Universal Joint, DW-434 (Part No.DW-434)
from
$16.49
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).
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MOOG Driveline Products – MOOG Driveline Products Greaseable Super Strength Universal Joint, 270 (Part No.270)
from
$39.99
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.
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MOOG Driveline Products – MOOG Driveline Products Greaseable Premium Universal Joint, 434 (Part No.434)
from
$34.99
Backed by superior materials and rigorous testing, MOOG Premium universal joints deliver reliable performance you can count on. MOOG problem-solving innovations ensure fast, hassle-free installation.
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Dorman – Help – Dorman – Help U-Joint Bolt Kit, 81004 (Part No.81004)
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.
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Neapco – Neapco Universal Joint, 2-4801 (Part No.2-4801)
from
$7.89
Universal Joint DRIVELINE PARTS AND MOUNTS>UNIVERSAL JOINTS>U-JOINTS-STANDARD>U-JOINTS-STANDARD from Neapco
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Neapco – Neapco Universal Joint, 2-4800 (Part No.2-4800)
from
$4.59
Universal Joint DRIVELINE PARTS AND MOUNTS>UNIVERSAL JOINTS>U-JOINTS-STANDARD>U-JOINTS-STANDARD from Neapco
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Driveworks – Driveworks Universal Joint, DW-270 (Part No.DW-270)
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).
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Spicer – Spicer Universal Joint, 5-1330X (Part No.5-1330X)
from
$41.99
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.
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MOOG Driveline Products – MOOG Driveline Products Greaseable Super Strength Universal Joint, 265 (Part No.265)
from
$40.49
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.
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Spicer – Spicer Universal Joint, Greaseable 1330-F Spec Series, 5-1204X (Part No.5-1204X)
from
$40.99
When you see the Spicer name, you know you are buying the highest quality product available. Spicer universal joints are no exception. Dana manufactures a full line of Spicer universal joints that are engineered to ensure longer life for vehicles in a wide variety of applications, from light vehicle to commercial and off-highway.
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Spicer – Spicer Universal Joint, 5-7438X (Part No.5-7438X)
from
$46.99
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.
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MOOG Driveline Products – MOOG Driveline Products Non-Greaseable Super Strength Universal Joint, 264 (Part No.264)
from
$39.49
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.
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Yukon Gear – Yukon Gear 1310 To 1330 Adapter U/Joint, 42005 (Part No.42005)
from
$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.”
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Yukon Gear – Yukon Gear 1350 To 1410 Conversion U/Joint, 42006 (Part No.42006)
Yukon Gear – "Yukon Gear 1310 And 1330 U/Bolt Kit (2 U-Bolts And 4 Nuts) For 9"" Ford, 41112" (Part No.41112)
Yukon Gear – Yukon Gear 1310 To Mechanics 3R Adapter U/Joint, 42013 (Part No.42013)
Yukon Gear – Yukon Gear 1350 Lifetime Series U/Joint, 42021 (Part No.42021)
from
$63.99
“Yukon 1350 Lifetime Series U/Joint. 3.625″” snap ring span, 1.188″” cap diameter. Outside snap ring.”
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Yukon Gear – Yukon Gear 1310 Lifetime U/Joint, 42003 (Part No.42003)
from
$57.99
“1310 Yukon Lifetime U/joint. 1.718″” snap ring span, 1.062″” cap diameter. Inside snap ring.”
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Yukon Gear – "Yukon Gear Yoke for Ford 9"" with 35 Spline Pinion and A 1350 U/Joint Size, 41058" (Part No.41058)
from
$304.99
Yukon Gear and Axle manufactures a complete line of general replacement and performance series of pinion yokes for many street, racing, and heavy-duty off-road applications.
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Most Popular 1978 Mercury Cougar Drive Shafts and Axles
Customize your Mercury with 12 Drive Shafts and Axles products
like Axle Shaft Seals,
Rear Axle Shaft Bearings, and
Axle Shaft Bearings, all
priced under $689.99.
Dorman – Help – Dorman – Help Driveshaft Flange Bolts, 80992 (Part No.80992)
from
$22.49
This drive shaft bolt 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.
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Yukon Gear – "Yukon Gear Tapered Axle Bearing And Seal Kit, 3.150"" Od, For 9"" Ford, 10058" (Part No.10058)
from
$111.99
“Yukon axle bearing & seal kits are specially designed for each application & use all high quality bearings & seals. Tapered axle bearing and seal kit, 3.150″” OD, for 9″” Ford. This axle bearing & seal kit services one side only.”
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Yukon Gear – "Yukon Gear Axle Bearing Retainer for Ford 9"", Large Bearing, 1/2"" Bolt Holes, 33467" (Part No.33467)
from
$67.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – Yukon Gear Outer Axle Seal For Set 20 Bearing, 30030 (Part No.30030)
Yukon Gear – Yukon Gear Carrier Bearing Puller Set, 56034 (Part No.56034)
from
$689.99
Yukon Gear & Axle offers a full line of top quality differential tools to save time and money.
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Yukon Gear – "Yukon Gear Ford 9"" (3/8"" Holes) Torino Design Housing Ends, 32160" (Part No.32160)
from
$279.99
Yukon Gear & Axle manufactures a full line of top-quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers, and other general maintenance items. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – Yukon Gear Sealed Axle Bearing, 10057 (Part No.10057)
from
$132.99
Yukon axle bearing and seal kits are specially designed for each application and use high-quality bearings and seals.
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Yukon Gear – "Yukon Gear Conversion Bearing for Small Bearing Ford 9"" Axle In Large Bearing Housing, 18046" (Part No.18046)
from
$92.99
Yukon Gear & Axle manufactures a full line of top-quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers, and other general maintenance items. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – "Yukon Gear Adaptor Washer for 28 Spline Pinion In Oversize Support, for 9"" Ford, 32240" (Part No.32240)
from
$71.99
Yukon Gear & Axle manufactures a full line of top-quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers, and other general maintenance items. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – "Yukon Gear Axle Bearing Retainer with Large & Small Bearing, 3/8"" Bolt Holes, 33466" (Part No.33466)
from
$22.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – "Yukon Gear Axle Bearing Retainer for Ford 9"", Small Bearing, 3/8"" Bolt Holes, 33468" (Part No.33468)
from
$22.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – "Yukon Gear Model 20 & Model 35 Axle Stud 1/2""-20 X 1.625"" Length, 0.620"" Dia – Knurl, 33181" (Part No.33181)
Top Picks for 1978 Mercury Cougar Spindles
Upgrade Mercury Cougars with top-quality Spindles parts, including 3 OEM and aftermarket selections for your 1978 model.
Dorman – Pik-a-Nut – Dorman – Pik-a-Nut Spindle Nut Kit, 13/16-20, 304994.1 (Part No.304994.1)
from
$5.99
This spindle lock nut kit includes a new spindle nut and the necessary hardware designed to match the factory equipment.
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Dorman – Dorman Spindle Nut 13/16 In.-20 Hex Size 1-1/8 In., 615-075.1 (Part No.615-075.1)
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.
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Dorman – Dorman Spindle Washer – I.D. 13/16 In. O.D. 1-21/32 In. Thickness 3/32 In., 618-013.1 (Part No.618-013.1)
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.
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In-Demand Differentials for 1978 Mercury Cougars
Select from 291 premium Differentials parts for your 1978 Mercury Cougar, with prices ranging from $3.99 to $1,211.99.
Felpro – Felpro Differential Carrier Gasket Oval Shaped 10 Bolt Hole Gasket, RDS 55074 (Part No.RDS 55074)
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.
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Powertrax – Powertrax Differential Lock Assembly, 1830-LR (Part No.1830-LR)
from
$444.99
For vehicles that are driven daily, the Power Trax 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 Power Trax No-Slip locker easily installs in to your differential carrier using basic tools and without affecting your ring and pinion settings. Power Trax Grip-Lok, Lock-Right Lockers and No-Slip Traction Systems automatically provide 100% traction on-demand, under the toughest circumstances. The Power Trax 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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National – National Multi-Purpose Bearing, A-18 (Part No.A-18)
from
$18.29
Manufactured with premium-grade steel, National taper bearing sets feature crowned raceways and rollers to ensure even load distribution.
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Motive Gear – Motive Gear Differential Pinion Nut, 379570S (Part No.379570S)
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.
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Richmond Gear – Richmond Gear Differential Ring And Pinion, 49-0027-1 (Part No.49-0027-1)
from
$344.99
Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND!
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Yukon Gear – Yukon Gear 3 Qt – Penzoil 80W90 Conventional Gear Oil, 15002 (Part No.15002)
from
$44.99
Union 76 gear oil is a conventional non-synthetic 80W90 formulation designed for all types of differentials.
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Dorman – Help – Dorman – Help Pinion Crush Sleeves, 81056 (Part No.81056)
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$6.99
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.
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National – National Multi-Purpose Seal, 51098 (Part No.51098)
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$10.99
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.
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Yukon Gear – Yukon Gear Crush Sleeve, 33085 (Part No.33085)
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$9.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – "Yukon Gear Outer Oil Slinger For Ford 7.5"", 8.8"", 9"", 10.25"", 33022" (Part No.33022)
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$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.”
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Yukon Gear – "Yukon Gear Ford 8"" & 9"" Standard Open, Ag, & Detroit Locker Ring Gear Bolt, 33058" (Part No.33058)
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$5.99
“Ford 8″” & 9″” standard Open, AG, & Detroit locker ring gear bolt. 7/16″” head, .925″” long.”
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Yukon Gear – "Yukon Gear Ford 8"" & 9"" Standard Open, Ag, & Detroit Locker Ring Gear Bolt, 33043" (Part No.33043)
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$5.99
“Ford 8″” & 9″” standard Open, AG, & Detroit locker ring gear bolt, 1.0″” long, Ford.”
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Yukon Gear – "Yukon Gear Ford 8"" & 9"" Tracloc Ring Gear Bolt, 33044" (Part No.33044)
Yukon Gear – Yukon Gear Pinion Nut, 33154 (Part No.33154)
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$7.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – "Yukon Gear 9"" Ford Gasket, 23012" (Part No.23012)
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$11.99
“9”” Ford gasket. EXTERNAL SUPPLY>FDO>BACK ROOM-FDO>APPLICATION SPECIFIC from Yukon Gear”
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Yukon Gear – "Yukon Gear Preload Shim Kit for Chrysler 8.75"" & Ford 9"", 55030" (Part No.55030)
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$21.99
Yukon shim kits are precision machined and tailored for each individual application to ensure you have the right shims for every set up.
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Mr. Gasket – "Mr. Gasket Rear End Gasket – Ford 9"" – Blend Of Nitrile Rubber And Fiber For Excellent Sealing And Durability, 82" (Part No.82)
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$26.69
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.
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Yukon Gear – "Yukon Gear Fill Plug For Ford 9"", 1/2"" Thread, 33539" (Part No.33539)
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$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 the latest designs and manufacturing technologies to provide a quiet running gear that is strong and easy to set up. All Yukon ring & pinion sets come standard with a one-year warranty.
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Yukon Gear – "Yukon Gear Dana 44, Ford 8"" / 9"", and Model 20 Side Gear Thrust Washer Replacement, 33283" (Part No.33283)
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$5.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – "Yukon Gear Pilot Bearing for Ford 9"", 18042" (Part No.18042)
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$38.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – "Yukon Gear Pinion Support Bolt for 8"" and 9"" Ford, 33242" (Part No.33242)
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$6.99
Yukon Gear & Axle manufactures a full line of top quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers and much, much more. For all your differential small parts needs, look no further than Yukon.
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Yukon Gear – "Yukon Gear Redline Synthetic ""Shock Proof"" Oil – 4 Quarts, 15004" (Part No.15004)
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$137.99
Redline Heavy Shockproof Gear Oil is formulated to provide lasting protection.
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Yukon Gear – "Yukon Gear O-ring for 9"" Ford, 30028" (Part No.30028)
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$14.99
Yukon Mighty Seals use the latest design and manufacturing technologies to produce a precision fit that seals tight and lasts for years to come.
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Yukon Gear – "Yukon Gear Side Gear with Hub for 9"" Ford with 31 Splines, 16161" (Part No.16161)
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$47.99
Yukon Gear & Axle manufactures a full line of top-quality small parts to complete any job including ring gear bolts, crush sleeves, pinion nuts and washers, axle studs, thrust washers, and other general maintenance items. You can count on Yukon to fulfill all your differential small parts needs.
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Most Sold 1978 Mercury Cougar Transfer Cases
Explore our best-selling Mercury parts for the 1978 Cougar among 3 OEM and aftermarket options starting from $7.99.
National – National Bearing, M88048 (Part No.M88048)
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$16.29
Manufactured with premium-grade steel, National® taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
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National – National Shaft Repair Sleeve, 99187 (Part No.99187)
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$36.99
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.
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Schaeffler – Schaeffler Cup, JL69310 (Part No.JL69310)
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$7.99
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.
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Top-Rated Drivetrains Brands For Your 1978 Mercury Cougar
Shop for the best-rated brands offering Drivetrains and other products for your 1978 Mercury Cougars. Below you’ll find some of our best rated Drivetrains from Moog, National, and Dorman, and more. Drivetrains from these brands that fit a 1978 Cougar start at just $5.99 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 1978 Mercury Cougar Drivetrains
When it comes to maintaining or upgrading your 1978 Mercury Cougar, 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 1978 Mercury Cougar. 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 $25.49, with an average price of just $30.16. Plus, with over 175 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
$25.49
(30)
MOOG Driveline Products Non-Greaseable Super Strength Universal Joint, 254
“Working great.”
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$37.49
(143)
MOOG Driveline Products Greaseable Premium Universal Joint, 354
“Works as expected and yes I recommend this product”
Popular National 1978 Mercury Cougar Drivetrains
National auto parts is one of the highest quality Drivetrain brands in the market. Any 1978 Mercury Cougar owner should feel confident when installing genuine National parts in their vehicle. To ensure the best fit and performance for your 1978 Cougar, 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 $16.29 to $36.99, plus, with more than 46 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
$36.99
(1)
National Shaft Repair Sleeve, 99187
“Fixed my Ford F-150 4.2. Fit well and installation tool seated the sleeve exactly where it needed to be. Super easy to use and covered the grooved s”
FAQs for 1978 Mercury Cougar Drivetrains
Which Drivetrains are best-sellers for 1978 Mercury Cougars?
Out of 339 Drivetrains that fit 1978 Mercury Cougars, the following parts are the top sellers:
- Driveworks Universal Joint, DW-354 (10265720) – $32.99
- National Multi-Purpose Bearing, A-18 (3275787) – $18.29
- Spicer Universal Joint, Greaseable 1330 Series OSR, 5-213X (10854997) – $44.99
What’s the price range for 1978 Mercury Cougar Drivetrains?
Drivetrain prices for the 1978 Mercury Cougar start at $3.35 and go up to $1,211.99 for the most premium parts.
What’s the average price of a Drivetrain for a 1978 Mercury Cougar?
The average price for Drivetrains for the 1978 Mercury Cougar is $229.29. 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 Cougar model years?
What are the cheapest Drivetrains for my 1978 Mercury Cougar?
The cheapest 1978 Mercury Cougar Drivetrains we carry in stock are:
- Dorman Spindle Nut 13/16 In.-20 Hex Size 1-1/8 In., 615-075.1 (21260549) – $3.49
- "Yukon Gear Trac Loc Ring Gear Bolt Washer For 8"" And 9"" Ford, 33245" (11643118) – $3.99
- "Yukon Gear Adjuster lock bolt 3.062"" & 3.250"" Yukon Ford 9"" Drop Out, 32149" (11642694) – $3.99
- Neapco Universal Joint, 2-4900 (5270154) – $4.19
- Neapco Universal Joint, 2-4800 (5270189) – $4.59
What are the top-rated Drivetrains that fit the 1978 Mercury Cougar?
Out of 2,298 reviews by customers, our 1978 Mercury Cougar Drivetrains have an average customer rating of . These are some of the highest-rated Drivetrain types for the 1978 Mercury Cougar and their top-rated products:
- Universal Joints
- Spicer Universal Joint, Greaseable 1330 Series OSR, 5-213X (10854997) – $44.99
- MOOG Driveline Products Universal Joint U-Bolt Kit, 534-10 (10086976) – $27.49
- MOOG Driveline Products Greaseable Premium Universal Joint, 354 (10086740) – $37.49
- Spindles
- Spicer Universal Joint, Greaseable 1330 Series OSR, 5-213X (10854997) – $44.99
- MOOG Driveline Products Universal Joint U-Bolt Kit, 534-10 (10086976) – $27.49
- MOOG Driveline Products Greaseable Premium Universal Joint, 354 (10086740) – $37.49
- Differentials
- Spicer Universal Joint, Greaseable 1330 Series OSR, 5-213X (10854997) – $44.99
- MOOG Driveline Products Universal Joint U-Bolt Kit, 534-10 (10086976) – $27.49
- MOOG Driveline Products Greaseable Premium Universal Joint, 354 (10086740) – $37.49
What types of Drivetrains do you sell for my 1978 Mercury Cougar?
As of 8/2/26, these are some of the most in-demand types of Drivetrains for a 1978 Mercury Cougar:
Can I get help with 1978 Mercury Cougar 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 Cougar Drivetrains?
Advance Auto Parts keeps returns simple. For new Mercury Cougar Drivetrains and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
