1978 Mercury Cougar Transmission Parts

Find Your Specific 1978 Mercury Cougar Transmission Parts

Below you will find various in-demand Mercury Transmission Parts, components and accessories for your 1978 Cougar. Advance Auto Parts has popular Cougar parts like Transmission Seals, Transmission Mounts, Transmission Bearings and more. You’ll also find aftermarket and OEM Transmission Parts for other Cougar model years including 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002 and more. Select a category of 1978 Mercury Cougar Transmission Parts below and start saving instantly.
Please Select your Vehicle to See Exact Fit Parts

Popular 1978 Mercury Cougar Transmission Parts Categories

Gear Shift Levers
Gear Shift Levers
Automatic Transmission Shift Linkage Bushings
Automatic Transmission Shift Linkage Bushings
Transmission Torque Converters
Transmission Torque Converters
OE Transmission Coolers
OE Transmission Coolers
Transfer Shaft Bearing
Transfer Shaft Bearing
Manual Transmission Differential Bearings
Manual Transmission Differential Bearings
Countershaft Bearings
Countershaft Bearings
Manual Transmission Output Shaft Bearings
Manual Transmission Output Shaft Bearings
Transmission Pan Gaskets
Transmission Pan Gaskets
Transmission Oil Cooler Fittings
Transmission Oil Cooler Fittings
Automatic Transmission Line Connectors
Automatic Transmission Line Connectors
Pinion Bearings
Pinion Bearings
Transmission Mounts
Transmission Mounts
Transmission Master Repair Kits
Transmission Master Repair Kits
Transmission Rebuild Kits
Transmission Rebuild Kits
Transmission Oil Pan Gaskets
Transmission Oil Pan Gaskets
Automatic Transmission Differential Bearings
Automatic Transmission Differential Bearings
Automatic Transmission Control Shaft Seals
Automatic Transmission Control Shaft Seals
Automatic Transmission Output Shaft Seals
Automatic Transmission Output Shaft Seals
Transmission Modulator Valves
Transmission Modulator Valves
Pinion Seals
Pinion Seals
Miscellaneous Shift Shaft Seals
Miscellaneous Shift Shaft Seals
Transmission Seals and O-rings
Transmission Seals and O-rings
Automatic Transmission Extension Housing Seal Kits
Automatic Transmission Extension Housing Seal Kits
Torque Converter Seals
Torque Converter Seals
Extension Housing Seals
Extension Housing Seals
Manual Transmission Output Shaft Seals
Manual Transmission Output Shaft Seals
Miscellaneous Automatic Transmission Seals
Miscellaneous Automatic Transmission Seals
Transmission Shift Kits
Transmission Shift Kits
Transmission Bands
Transmission Bands
Manual Transmission Main Shaft Seals
Manual Transmission Main Shaft Seals
Manual Transmission Seals
Manual Transmission Seals
Front Pump Seals
Front Pump Seals
Automatic Transmission Seals
Automatic Transmission Seals
Remanufactured Automatic Transmissions
Remanufactured Automatic Transmissions
Transmission Cooler
Transmission Cooler
Automatic Transmission Friction Discs
Automatic Transmission Friction Discs
Automatic Transmission Clutch Plates
Automatic Transmission Clutch Plates
Automatic Transmission Bushing Kits
Automatic Transmission Bushing Kits
Automatic Transmission Output Speed Sensor Seal
Automatic Transmission Output Speed Sensor Seal

Essential Transmission Parts for 1978 Mercury Cougars

Imperial – "Imperial Plate and Fin Style Transmission Cooler, Light Duty, 3/4"" x 5-7/8"" x 11"", 243006" (Part No.243006)

"Imperial Plate and Fin Style Transmission Cooler, Light Duty, 3/4"" x 5-7/8"" x 11"", 243006"

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$60.99
The Imperial Maxi-Cool XL’s plate and fin design offer excellent cooling efficiency in a compact, space-efficient design.
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(3 reviews)
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National – National Multi-Purpose Seal, 3404 (Part No.3404)

National Multi-Purpose Seal, 3404

from

$20.29
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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(5 reviews)
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National – National Bearing, LM67048 (Part No.LM67048)

National Bearing, LM67048

from

$7.39
Manufactured with premium-grade steel, National® taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
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ATP – ATP Automatic Transmission Master Repair Kit, FM-45 (Part No.FM-45)

ATP Automatic Transmission Master Repair Kit, FM-45

from

$414.99
When it’s time to rebuild an automatic transmission, it’s a big job. ATP Master Repair Kits come with friction And steel clutch plates, seals, o-rings, gaskets, And sealing rings. ATP components are engineered to fit And function just like the original parts for long life And durability.
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ATP – ATP Automatic Transmission Bushing Kit, FBS-2 (Part No.FBS-2)

ATP Automatic Transmission Bushing Kit, FBS-2

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$80.99
ATP Transmission Components are exact fit, no compromise replacement parts
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ATP – ATP Automatic Transmission Oil Pan Gasket, FG-114 (Part No.FG-114)

ATP Automatic Transmission Oil Pan Gasket, FG-114

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$12.79
ATP Transmission Seals And Gaskets are exact fit, no compromise replacement parts
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Felpro – Felpro Transmission Oil Pan Gasket 17 Bolt Hole One Piece Gasket, TOS 18628 (Part No.TOS 18628)

Felpro Transmission Oil Pan Gasket 17 Bolt Hole One Piece Gasket, TOS 18628

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$12.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
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(1 reviews)
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TC Remanufacturing – TC Remanufacturing Torque Converter for Automatic Transmission, FM124 (Part No.FM124)

TC Remanufacturing Torque Converter for Automatic Transmission, FM124

from

$126.99
This remanufactured torque converter is designed to restore smooth engagement, reliable power transfer, and consistent drivability. Built using high-quality internal components and new seals where applicable, each unit is professionally assembled and tested to ensure dependable performance. Designed as a direct-fit replacement, it delivers factory-like operation for everyday driving conditions.
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Motive Gear – Motive Gear Differential Pinion Seal, 8181NA (Part No.8181NA)

Motive Gear Differential Pinion Seal, 8181NA

from

$9.99
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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Imperial – Imperial Transmission Line Fitting Kit, 240252 (Part No.240252)

Imperial Transmission Line Fitting Kit, 240252

from

$9.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
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(3 reviews)
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National – National Multi-Purpose Seal, 240816 (Part No.240816)

National Multi-Purpose Seal, 240816

from

$8.89
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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B & M – B & M Shift Improver Kit, 50262 (Part No.50262)

B & M Shift Improver Kit, 50262

from

$88.89
The B&M Shift Improver Kit for 1970-1982 Ford, Lincoln, Mercury C4 automatic transmissions recalibrates your automatic transmission for optimum performance and extended life! Select the mode that best suits your application Provides crisp shifts on any stock automatic transmission Eliminates shift overlap and excess wear on clutches and bands due to slippage The B&M Shift Improver Kit the easiest way to get the stout performance you’ve always wanted out of your automatic transmission – and you get two modes of performance to select from: Heavy Duty, or Street/Strip. It’s our least expensive and simplest to install kit. All you need are some hand tools! In the space of an afternoon, you can turn your transmission into a B&M-tuned unit! Ask the thousands of satisfied customers that have installed one in their transmissions! STAGE 1. HEAVY DUTY Firm positive shifts without loss of driver comfort for improved performance in all street vehicles. Recommended for off-road, towing and daily driver performance cars. STAGE 2 is our Street/Strip set-up and provides firm positive shifts for high performance street use or for competitive events. This level is for the enthusiast who wants the hardest, quickest possible shifts.
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B & M – B & M Automatic Shifter – Megashifter – Universal, 80685 (Part No.80685)

B & M Automatic Shifter - Megashifter - Universal, 80685

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$529.99
The B&M MegaShifter has it all, form, function and classic style. This all adds up to bring you a quality shifter that’s been one of the most popular automatic shifters of all time. First off let’s talk function. The MegaShifters positive ratcheting function won’t allow you to over shift and miss a gear at that critical moment, along with the reverse lockout feature meets NHRA/IHRA safety rules for those weekend grudge races at the track. The look and feel of the T-handle and accordion style shift boot really shows off the racing heritage of the MegaShifter. Other features include a black console that you can trim to fit your vehicle’s floor for a perfect fit, 5 foot shifter cable, cable brackets, transmission shift levers, chrome plated top plate with lighted gear indicator and everything needed for an easy at home installation. An optional T-handle with a 12-volt button is available separately for actuating a trans-brake, nitrous oxide or other accessories for the hard-core performance enthusiast. This shifter comes with all necessary parts for use with three and four-speed automatic transmissions such as 1966 and later Chrysler Torqueflite A727, A904, A500, and A518 transmissions. Ford C4, C6 transmissions. GM models TH 200, TH250, TH350, TH400, 2004R, 700R4, 4L60, 4L60E – 4L85E without PRNDL switch transmissions. For Ford AOD transmissions you will need installation kit #40496, AODE and 4R70W require installation kit #40504, E40D and 4R100 require installation kit #40505 and GM 4L60E – 4L85E transmissions with PRNDL switch require cable bracket #70499. Overall Dimensions – 13L x 6.6W x 12.6H
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Schaeffler – Schaeffler Shaft Seal, SS3644 (Part No.SS3644)

Schaeffler Shaft Seal, SS3644

from

$6.99
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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B & M – B & M Torque Converter, Holeshot 2500, 50451 (Part No.50451)

B & M Torque Converter, Holeshot 2500, 50451

from

$727.99
This Holeshot 2500 fits 1970-82 Ford C4 automatic transmissions with 26 spline input, 1.375 crank pilot and a 10.5-inch bolt circle. Holeshot torque converters are for serious-minded performance enthusiasts and offer additional strength and durability features not found in our Traveler or Tork Master series of converters. The Holeshot 2500 converter is good for vehicles with some performance engine modifications, particularly big cams that tend to reduce low-end power and torque. The higher stall speed of this converter will launch the car in a higher rpm range where more torque is readily available, resulting in quicker acceleration. Holeshot converters feature furnace brazed impeller fins and turbine, new precision alloy impeller hub and new heavy duty needle bearings. Other features include fully balanced and pressure tested by expert technicians. If your vehicle is equipped with a plate type nitrous system or supercharger, please refer to the Nitrous Holeshot line of converters. Notes: Stall speed listings are based on engines producing 230lb. ft. of torque at 2,500 rpm. More torque at 2,500 rpm will give you more stall speed, less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. This converter is Not recommended for supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product.
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ATP – ATP Automatic Transmission Control Shaft Seal, FO-15 (Part No.FO-15)

ATP Automatic Transmission Control Shaft Seal, FO-15

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$7.49
ATP Transmission Seals and Gaskets are exact fit, no compromise replacement parts
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Schaeffler – Schaeffler Shaft Seal, SS2664 (Part No.SS2664)

Schaeffler Shaft Seal, SS2664

from

$9.99
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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Driveworks – Driveworks Oil Seal, S-3771 (Part No.S-3771)

Driveworks Oil Seal, S-3771

from

$9.99
Value-priced seal meets all cataloged application requirements.
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(3 reviews)
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National – National Automatic Transmission Extension Housing Seal Kit, 5203 (Part No.5203)

National Automatic Transmission Extension Housing Seal Kit, 5203

from

$26.99
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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(5 reviews)
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National – National Shaft Repair Sleeve, 99199 (Part No.99199)

National Shaft Repair Sleeve, 99199

from

$42.49
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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(1 reviews)
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National – National Multi-Purpose Bearing, 307-L (Part No.307-L)

National Multi-Purpose Bearing, 307-L

from

$44.49
Designed to meet or exceed OE quality, premium-quality bearings from National are manufactured to exacting standards to deliver lasting performance and extended bearing life.
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ATP – ATP Automatic Transmission Clutch Plate, FC-4 (Part No.FC-4)

ATP Automatic Transmission Clutch Plate, FC-4

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$14.99
ATP Transmission Components are exact fit, no compromise replacement parts
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Driveworks – Driveworks Oil Seal, S-7692S (Part No.S-7692S)

Driveworks Oil Seal, S-7692S

from

$6.49
Value-priced seal meets all cataloged application requirements.
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(9 reviews)
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Schaeffler – Schaeffler Repair Sleeve, SR3501 (Part No.SR3501)

Schaeffler Repair Sleeve, SR3501

from

$40.99
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.
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ATP – ATP Automatic Transmission Band (Reverse), FX-174 (Part No.FX-174)

ATP Automatic Transmission Band (Reverse), FX-174

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$101.99
ATP Transmission Components are exact fit, no compromise replacement parts
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ATP – ATP Automatic Transmission Clutch Plate, FC-105 (Part No.FC-105)

ATP Automatic Transmission Clutch Plate, FC-105

from

$8.49
ATP Transmission Components are exact fit, no compromise replacement parts
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Schaeffler – Schaeffler Shaft Seal, SS2577 (Part No.SS2577)

Schaeffler Shaft Seal, SS2577

from

$8.99
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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ATP – ATP Automatic Transmission Shift Linkage Bushing, FO-300 (Part No.FO-300)

ATP Automatic Transmission Shift Linkage Bushing, FO-300

from

$9.59
ATP Transmission Components are exact fit, no compromise replacement parts
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Upgrade your 1978 Mercury Cougar with Top-Quality Transmission Parts

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, Transmission Parts are key to keeping your Cougar functioning at its best. At Advance Auto Parts, we offer a wide selection of 109 Transmission Parts for the 1978 Mercury Cougar, designed to meet your needs without breaking the bank. From Transmission Seal replacements to Transmission Mounts 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 Transmission Parts for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Transmission Parts for your 1978 Mercury Cougar at great prices. Our Transmission Parts inventory for this model ranges from just $2.29 to $1,171.99, with an average price of $191.56. Our 109 Transmission Parts in stock come from 14 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 Transmission Parts from top names like National, Driveworks, Imperial, and more. National Transmission Parts start at just $11.99 and boast an impressive 4.3 stars average rating from customers. Driveworks and Imperial also bring quality to the table, with Transmission Parts available starting at $6.49, and at an average 4.2 stars rating. With 1,862 customer reviews and counting, our 1978 Mercury Cougar Transmission Parts 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 Transmission Part 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 Transmission Seals for 1978 Mercury Cougars

Enhance the driving experience in your Mercury with 21 quality Transmission Seal components, starting at $2.29.
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Driveworks – Driveworks Oil Seal, S-7300S (Part No.S-7300S)

Driveworks Oil Seal, S-7300S

from

$11.49
Value-priced seal meets all cataloged application requirements.
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(8 reviews)
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National – National Multi-Purpose Seal, 7300S (Part No.7300S)

National Multi-Purpose Seal, 7300S

from

$17.99
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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(3 reviews)
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National – National Multi-Purpose Seal, 7044NA (Part No.7044NA)

National Multi-Purpose Seal, 7044NA

from

$15.29
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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(3 reviews)
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ATP – ATP Automatic Transmission Fluid Filler Tube Seal, JO-15 (Part No.JO-15)

ATP Automatic Transmission Fluid Filler Tube Seal, JO-15

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$4.29
ATP Transmission Seals And Gaskets are exact fit, no compromise replacement parts
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(2 reviews)
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National – National Automatic Transmission Extension Housing Seal Kit, 5203 (Part No.5203)

National Automatic Transmission Extension Housing Seal Kit, 5203

from

$26.99
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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(5 reviews)
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National – National Shaft Repair Sleeve, 99199 (Part No.99199)

National Shaft Repair Sleeve, 99199

from

$42.49
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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(1 reviews)
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National – National Multi-Purpose Seal, 7692S (Part No.7692S)

National Multi-Purpose Seal, 7692S

from

$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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(3 reviews)
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Driveworks – Driveworks Oil Seal, S-7692S (Part No.S-7692S)

Driveworks Oil Seal, S-7692S

from

$6.49
Value-priced seal meets all cataloged application requirements.
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(9 reviews)
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Driveworks – Driveworks Oil Seal, S-7044NA (Part No.S-7044NA)

Driveworks Oil Seal, S-7044NA

from

$6.49
Value-priced seal meets all cataloged application requirements.
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(1 reviews)
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ATP – ATP Automatic Transmission Control Shaft Seal, FO-15 (Part No.FO-15)

ATP Automatic Transmission Control Shaft Seal, FO-15

from

$7.49
ATP Transmission Seals and Gaskets are exact fit, no compromise replacement parts
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National – National Multi-Purpose Seal, 7929S (Part No.7929S)

National Multi-Purpose Seal, 7929S

from

$7.39
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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ATP – ATP Automatic Transmission Dipstick Tube O’Ring Seal, SO-33 (Part No.SO-33)

ATP Automatic Transmission Dipstick Tube O'Ring Seal, SO-33

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$2.99
ATP Transmission Seals and Gaskets are exact fit, no compromise replacement parts
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ATP – ATP Automatic Transmission Extension Housing Seal, HO-9 (Part No.HO-9)

ATP Automatic Transmission Extension Housing Seal, HO-9

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$12.99
ATP Transmission Seals And Gaskets are exact fit, no compromise replacement parts
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National – National Multi-Purpose Seal, 240816 (Part No.240816)

National Multi-Purpose Seal, 240816

from

$8.89
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.
See More
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ATP – ATP Automatic Transmission Extension Housing Seal, HO-8 (Part No.HO-8)

ATP Automatic Transmission Extension Housing Seal, HO-8

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$14.29
ATP Transmission Seals and Gaskets are exact fit, no compromise replacement parts
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Schaeffler – Schaeffler Repair Sleeve, SR3501 (Part No.SR3501)

Schaeffler Repair Sleeve, SR3501

from

$40.99
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.
See More
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ATP – ATP Automatic Transmission Extension Housing Seal, FO-199 (Part No.FO-199)

ATP Automatic Transmission Extension Housing Seal, FO-199

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$18.49
ATP Transmission Seals And Gaskets are exact fit, no compromise replacement parts
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Driveworks – Driveworks Oil Seal, S-5202 (Part No.S-5202)

Driveworks Oil Seal, S-5202

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$16.99
Driveworks Oil Seal, S-5202. BEARINGS, SEALS, HUB ASSEMBLIES>BEARINGS & SEALS>SEALS>ECONOMY SEALS from Driveworks
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Schaeffler – Schaeffler Shaft Seal, SS2577 (Part No.SS2577)

Schaeffler Shaft Seal, SS2577

from

$8.99
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.
See More
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Schaeffler – Schaeffler Shaft Seal, SS3644 (Part No.SS3644)

Schaeffler Shaft Seal, SS3644

from

$6.99
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.
See More
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Driveworks – Driveworks Oil Seal, S-7929-S (Part No.S-7929-S)

Driveworks Oil Seal, S-7929-S

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$2.29
Driveworks Oil Seal, S-7929-S. BEARINGS, SEALS, HUB ASSEMBLIES>BEARINGS & SEALS>SEALS>ECONOMY SEALS from Driveworks
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Most Popular 1978 Mercury Cougar Transmission Mounts

Customize your Mercury with 2 Transmission Mounts products like Transmission Mounts, all priced under $19.99.
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Anchor – Anchor Transmission Mount: Rear, 1 Piece, 2530 (Part No.2530)

Anchor Transmission Mount: Rear, 1 Piece, 2530

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$12.99
Anchor 2530 This mount supports the transmission and dampens vibration. Each mount is specifically engineered and designed to OE standards. Natural and SBR rubber provide maximum life and performance. Steel fasteners are heat treated grade 5 bolts. A special bonding agent is used to ensure a rubber to metal bond. Rubber material is mixed to specific Durometer, hardness.
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(2 reviews)
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Anchor – Anchor Transmission Mount: Rear, 1 Piece, 2464 (Part No.2464)

Anchor Transmission Mount: Rear, 1 Piece, 2464

from

$19.99
Anchor 2464 This mount supports the transmission and dampens vibration. Each mount is specifically engineered and designed to OE standards. Natural and SBR rubber provide maximum life and performance. Steel fasteners are heat treated grade 5 bolts. A special bonding agent is used to ensure a rubber to metal bond. Rubber material is mixed to specific Durometer, hardness.
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Top Picks for 1978 Mercury Cougar Transmission Bearings

Upgrade Mercury Cougars with top-quality Transmission Bearings parts, including 9 OEM and aftermarket selections for your 1978 model.
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National – National Bearing Race, M88010 (Part No.M88010)

National Bearing Race, M88010

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$11.99
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
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(4 reviews)
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Driveworks – Driveworks Taper Bearing Set, S-A-18 (Part No.S-A-18)

Driveworks Taper Bearing Set, S-A-18

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$12.99
Value-priced bearing meets all cataloged application requirements.
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(33 reviews)
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National – National Tapered Roller Bearing Cone, LM102949 (Part No.LM102949)

National Tapered Roller Bearing Cone, LM102949

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$21.29
Manufactured with premium-grade steel, National taper bearing cones feature crowned raceways and rollers to ensure even load distribution.
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(23 reviews)
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National – National Bearing Race, LM102910 (Part No.LM102910)

National Bearing Race, LM102910

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$7.39
Manufactured with premium-grade steel, National taper bearing cups feature crowned raceways to ensure even load distribution.
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(6 reviews)
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Driveworks – Driveworks Tapered Cup Wheel Bearing Assembly, S-LM-102910 (Part No.S-LM-102910)

Driveworks Tapered Cup Wheel Bearing Assembly, S-LM-102910

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$6.99
Value-priced bearing meets all cataloged application requirements.
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Driveworks – Driveworks Taper Bearing Cone, S-M-88048 (Part No.S-M-88048)

Driveworks Taper Bearing Cone, S-M-88048

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$11.79
Value-priced bearing meets all cataloged application requirements.
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Schaeffler – Schaeffler Bearing – TRB (Tapered Roller Bearing), KT11 (Part No.KT11)

Schaeffler Bearing - TRB (Tapered Roller Bearing), KT11

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$15.99
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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Schaeffler – Schaeffler Bearing Cone, KJL69349 (Part No.KJL69349)

Schaeffler Bearing Cone, KJL69349

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$14.99
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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Schaeffler – Schaeffler Cup, M88010 (Part No.M88010)

Schaeffler Cup, M88010

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$10.99
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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In-Demand Transmission Cooler and Parts for 1978 Mercury Cougars

Select from 14 premium Transmission Cooler and Parts parts for your 1978 Mercury Cougar, with prices ranging from $11.99 to $91.99.
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Imperial – Imperial High Performance Transmission Oil Cooler, 240516 (Part No.240516)

Imperial High Performance Transmission Oil Cooler, 240516

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$77.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
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(4 reviews)
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Imperial – Imperial Maxi-Kool XL Transmission Oil Cooler, 243007 (Part No.243007)

Imperial Maxi-Kool XL Transmission Oil Cooler, 243007

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$70.99
The Imperial Maxi-Cool XL’s plate and fin design offer excellent cooling efficiency in a compact, space-efficient design.
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(7 reviews)
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Imperial – "Imperial Plate and Fin Style Transmission Cooler, Light Duty, 3/4"" x 5-7/8"" x 11"", 243006" (Part No.243006)

"Imperial Plate and Fin Style Transmission Cooler, Light Duty, 3/4"" x 5-7/8"" x 11"", 243006"

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$60.99
The Imperial Maxi-Cool XL’s plate and fin design offer excellent cooling efficiency in a compact, space-efficient design.
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(3 reviews)
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Imperial – Imperial Mounting Kit System, 226201 (Part No.226201)

Imperial Mounting Kit System, 226201

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$11.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
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(27 reviews)
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Imperial – Imperial Econo-Kool Transmission Oil Cooler, 242010 (Part No.242010)

Imperial Econo-Kool Transmission Oil Cooler, 242010

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$51.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
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(30 reviews)
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Imperial – Imperial Econo-Kool Transmission Oil Cooler, 242009 (Part No.242009)

Imperial Econo-Kool Transmission Oil Cooler, 242009

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$39.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
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(10 reviews)
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Imperial – Imperial Maxi-Kool XL Transmission Oil Cooler, 243012 (Part No.243012)

Imperial Maxi-Kool XL Transmission Oil Cooler, 243012

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$90.99
The Imperial Maxi-Cool XL’s plate and fin design offer excellent cooling efficiency in a compact, space-efficient design.
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(31 reviews)
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Imperial – Imperial Econo-Kool Transmission Oil Cooler, 241018 (Part No.241018)

Imperial Econo-Kool Transmission Oil Cooler, 241018

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$60.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
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(11 reviews)
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Imperial – "Imperial Plate and Fin Style Transmission Cooler, Heavy Duty, 3/4"" x 9-1/2"" x 11"", 243008" (Part No.243008)

"Imperial Plate and Fin Style Transmission Cooler, Heavy Duty, 3/4"" x 9-1/2"" x 11"", 243008"

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$91.99
The Imperial Maxi-Cool XL’s plate and fin design offer excellent cooling efficiency in a compact, space-efficient design.
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(8 reviews)
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Imperial – Imperial Econo-Kool Transmission Oil Cooler, 242012 (Part No.242012)

Imperial Econo-Kool Transmission Oil Cooler, 242012

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$54.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
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(4 reviews)
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Imperial – Imperial High Performance Transmission Oil Cooler, 240514 (Part No.240514)

Imperial High Performance Transmission Oil Cooler, 240514

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$81.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
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(48 reviews)
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Imperial – Imperial Transmission Oil Cooler Reinstallation Kit, 248002 (Part No.248002)

Imperial Transmission Oil Cooler Reinstallation Kit, 248002

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$21.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
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(4 reviews)
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Imperial – Imperial High Performance Transmission Oil Cooler, 240512 (Part No.240512)

Imperial High Performance Transmission Oil Cooler, 240512

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$68.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
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Imperial – Imperial Econo-Kool Transmission Oil Cooler, 242016 (Part No.242016)

Imperial Econo-Kool Transmission Oil Cooler, 242016

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$65.99
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Imperial.
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Most Sold 1978 Mercury Cougar Automatic Transmission Parts

Explore our best-selling Mercury parts for the 1978 Cougar among 14 OEM and aftermarket options starting from $8.49.
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ATP – ATP Automatic Transmission Shift Linkage Bushing, FO-405 (Part No.FO-405)

ATP Automatic Transmission Shift Linkage Bushing, FO-405

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$8.49
ATP Transmission Components are exact fit, no compromise replacement parts
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(1 reviews)
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Pro-King – Pro-King Automatic Transmission Vacuum Modulator, MD-23 (Part No.MD-23)

Pro-King Automatic Transmission Vacuum Modulator, MD-23

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$40.99
Fully adjustable vacuum modulator to maintain accurate shift points.
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(2 reviews)
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ATP – ATP Automatic Transmission Shift Linkage Bushing, FO-300 (Part No.FO-300)

ATP Automatic Transmission Shift Linkage Bushing, FO-300

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$9.59
ATP Transmission Components are exact fit, no compromise replacement parts
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ATP – ATP AT MODULATOR VALVE, FX-194 (Part No.FX-194)

ATP AT MODULATOR VALVE, FX-194

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$52.99
ATP AT MODULATOR VALVE, FX-194. DRIVELINE – TRANSMISSION PARTS>TRANSMISSION PARTS>TRANSMISSION CONTROL MODULES>TRANSMISSION CONTROL MODULES from ATP
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Pro-King – Pro-King Automatic Transmission Vacuum Modulator, MD-36 (Part No.MD-36)

Pro-King Automatic Transmission Vacuum Modulator, MD-36

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$38.99
Fully adjustable vacuum modulator to maintain accurate shift points.
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ATP – ATP AT MODULATOR VALVE, FX-262 (Part No.FX-262)

ATP AT MODULATOR VALVE, FX-262

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$52.99
ATP AT MODULATOR VALVE, FX-262. DRIVELINE – TRANSMISSION PARTS>TRANSMISSION PARTS>TRANSMISSION CONTROL MODULES>TRANSMISSION CONTROL MODULES from ATP
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B & M – B & M Torque Converter, Holeshot 2500, 50451 (Part No.50451)

B & M Torque Converter, Holeshot 2500, 50451

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$727.99
This Holeshot 2500 fits 1970-82 Ford C4 automatic transmissions with 26 spline input, 1.375 crank pilot and a 10.5-inch bolt circle. Holeshot torque converters are for serious-minded performance enthusiasts and offer additional strength and durability features not found in our Traveler or Tork Master series of converters. The Holeshot 2500 converter is good for vehicles with some performance engine modifications, particularly big cams that tend to reduce low-end power and torque. The higher stall speed of this converter will launch the car in a higher rpm range where more torque is readily available, resulting in quicker acceleration. Holeshot converters feature furnace brazed impeller fins and turbine, new precision alloy impeller hub and new heavy duty needle bearings. Other features include fully balanced and pressure tested by expert technicians. If your vehicle is equipped with a plate type nitrous system or supercharger, please refer to the Nitrous Holeshot line of converters. Notes: Stall speed listings are based on engines producing 230lb. ft. of torque at 2,500 rpm. More torque at 2,500 rpm will give you more stall speed, less torque at 2,500 rpm will give you less stall speed than the stall speed ratings indicated. Higher stall converters can generate more heat, so we highly recommend adding a transmission cooler. This converter is Not recommended for supercharged, plate-type nitrous oxide or trans-brake applications. The product images shown are for illustration purposes only and may not be an exact representation of the product.
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ATP – ATP Automatic Transmission Band (Reverse), FX-174 (Part No.FX-174)

ATP Automatic Transmission Band (Reverse), FX-174

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$101.99
ATP Transmission Components are exact fit, no compromise replacement parts
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ATP – ATP AT MODULATOR VALVE, FX-80 (Part No.FX-80)

ATP AT MODULATOR VALVE, FX-80

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$46.99
ATP AT MODULATOR VALVE, FX-80. DRIVELINE – TRANSMISSION PARTS>TRANSMISSION PARTS>TRANSMISSION CONTROL MODULES>TRANSMISSION CONTROL MODULES from ATP
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Carquest Premium – Carquest Automatic Transmission Modulator Valve, VMC1039 (Part No.VMC1039)

Carquest Automatic Transmission Modulator Valve, VMC1039

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$43.99
The transmission modulator valve is a vacuum operated mechanical device located on the transmission case. This valve will have a actuator rod extended into the transmission valve body inside the transmission which will control the flow of transmission fluid within the transmission to place the transmission in the most optimal forward gear selection.
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Carquest Premium – Carquest Automatic Transmission Modulator Valve, VMC1022 (Part No.VMC1022)

Carquest Automatic Transmission Modulator Valve, VMC1022

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$34.99
The transmission modulator valve is a vacuum operated mechanical device located on the transmission case. This valve will have a actuator rod extended into the transmission valve body inside the transmission which will control the flow of transmission fluid within the transmission to place the transmission in the most optimal forward gear selection.
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Carquest Premium – Carquest Automatic Transmission Modulator Valve, VMC1025 (Part No.VMC1025)

Carquest Automatic Transmission Modulator Valve, VMC1025

from

$32.49
The transmission modulator valve is a vacuum operated mechanical device located on the transmission case. This valve will have a actuator rod extended into the transmission valve body inside the transmission which will control the flow of transmission fluid within the transmission to place the transmission in the most optimal forward gear selection.
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ATP – ATP Automatic Transmission Band (Oem Type, Intermediate), FX-124 (Part No.FX-124)

ATP Automatic Transmission Band (Oem Type, Intermediate), FX-124

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$29.99
ATP Transmission Components are exact fit, no compromise replacement parts
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ATP – ATP Automatic Transmission Clutch Plate, FC-105 (Part No.FC-105)

ATP Automatic Transmission Clutch Plate, FC-105

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$8.49
ATP Transmission Components are exact fit, no compromise replacement parts
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Top-Rated Transmission Parts Brands For Your 1978 Mercury Cougar

Shop for the best-rated brands offering Transmission Parts and other products for your 1978 Mercury Cougars. Below you’ll find some of our best rated Transmission Parts from National, Driveworks, and Imperial, and more. Transmission Parts from these brands that fit a 1978 Cougar start at just $6.49 and are rated as high as 4.3 stars. OEM and aftermarket Transmission Parts don’t get more top quality, durable, and affordable than from the brands below.

Popular National 1978 Mercury Cougar Transmission Parts

When it comes to maintaining or upgrading your 1978 Mercury Cougar, using quality Transmission Parts is essential to ensure durability and a perfect fit. National ticks all of those boxes. We offer a wide selection of National Transmission Parts, specifically designed for the 1978 Mercury Cougar. With over 3 National brand Transmission Parts in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $11.99, with an average price of just $15.09. Plus, with over 10 customer reviews and an average rating of 4.3 stars, you can trust that our National Transmission Parts will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.
National Multi-Purpose Seal, 7300S
from $17.99
(3)
National Multi-Purpose Seal, 7300S
“Fit perfectly and stopped the leak. For anyone who needs to know, I used this seal for my Tremec TKO 600 transmission. This seal is a direct replaceme”
National Bearing Race, M88010
from $11.99
(4)
National Bearing Race, M88010
“Goes with M88010 bearing cup. Application was the pinion bearing race for a Ford 9 Inch on a 1957 Ford F-100.”
National Multi-Purpose Seal, 7044NA
from $15.29
(3)
National Multi-Purpose Seal, 7044NA
“good quality”

Popular Driveworks 1978 Mercury Cougar Transmission Parts

Driveworks auto parts is one of the highest quality Transmission Part brands in the market. Any 1978 Mercury Cougar owner should feel confident when installing genuine Driveworks parts in their vehicle. To ensure the best fit and performance for your 1978 Cougar, Advance Auto Parts carries a full inventory of 3 Driveworks Transmission Parts. Plus you will be keeping your Mercury in peak condition while saving money because prices on these Driveworks Transmission Parts range from $6.49 to $12.99, plus, with more than 50 customer reviews and an impressive 4.2 stars average rating, you can be confident the Fram Transmission Parts below will deliver on both quality and value.
Driveworks Taper Bearing Set, S-A-18
from $12.99
(33)
Driveworks Taper Bearing Set, S-A-18
“It worked”
Driveworks Oil Seal, S-7692S
from $6.49
(9)
Driveworks Oil Seal, S-7692S
“Good price works fine”
Driveworks Oil Seal, S-7300S
from $11.49
(8)
Driveworks Oil Seal, S-7300S
“Nice price 👍 perfect fit 👌”

FAQs for 1978 Mercury Cougar Transmission Parts

Which Transmission Parts are best-sellers for 1978 Mercury Cougars?

Out of 109 Transmission Parts that fit 1978 Mercury Cougars, the following parts are the top sellers:

What’s the price range for 1978 Mercury Cougar Transmission Parts?

Transmission Part prices for the 1978 Mercury Cougar start at $2.29 and go up to $1,171.99 for the most premium parts.

What’s the average price of a Transmission Part for a 1978 Mercury Cougar?

The average price for Transmission Parts for the 1978 Mercury Cougar is $191.56. Keep in mind the variety of part types within our Transmission Part category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Transmission Parts for other Mercury Cougar model years?

Yes, we currently carry Transmission Parts for 33 model years of Mercury Cougars between 1967 and 2002. Transmission Parts are bought most frequently for the following model years: 2002, 2001, 2000, 1999, 1997, 1996, 1995, 1994, and 1993.

What are the cheapest Transmission Parts for my 1978 Mercury Cougar?

The cheapest 1978 Mercury Cougar Transmission Parts we carry in stock are:

What are the top-rated Transmission Parts that fit the 1978 Mercury Cougar?

Out of 1,862 reviews by customers, our 1978 Mercury Cougar Transmission Parts have an average customer rating of . These are some of the highest-rated Transmission Part types for the 1978 Mercury Cougar and their top-rated products:

What types of Transmission Parts do you sell for my 1978 Mercury Cougar?

Can I get help with 1978 Mercury Cougar Transmission Part orders?

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

What is your return policy for Mercury Cougar Transmission Parts?

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

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