1978 Cadillac Eldorado Transmission Parts
Find Your Specific 1978 Cadillac Eldorado Transmission Parts
Below you will find various in-demand Cadillac Transmission Parts, components and accessories for your 1978 Eldorado. Advance Auto Parts has popular Eldorado parts like Transmission Cooler and Parts, Automatic Transmission Pan and Gaskets, Transmission Seals and more. You’ll also find aftermarket and OEM Transmission Parts for other Eldorado model years including
1994,
1995,
1996,
1997,
1998,
1999,
2000,
2001,
2002 and more. Select a category of 1978 Cadillac Eldorado Transmission Parts below and start saving instantly.
Popular 1978 Cadillac Eldorado Transmission Parts Categories
Essential Transmission Parts for 1978 Cadillac Eldorados
B & M – Cable Bracket (Part No.30498)
from
$33.99
Cable Bracket, GM (Bandit style shifters only) APPLICATION: For TH-400, 350, 250, 200, 700R4, 200-4R with 80797, 80798 or 81050 shifter.
Product Features:
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Product Features:
- Shifter Service Parts
- Steel
- Natural Finish
- Sold individually
- Replacement for Bandit shifters
ATP – AT SOLENOID SEAL (Part No.JO-15)
from
$3.99
AT SOLENOID SEAL
Pro-King – Automatic Transmission Basic Rebuild Kit (Part No.KB-828)
from
$93.99
This Basic Rebuild Kit contains a complete gasket Kit and friction set. Each Rebuild Kit contains only the highest quality parts that meet or exceed OE specifications.
Product Features:
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Product Features:
- Does not include steels or filter
FAG US – Bearing (Part No.6207)
from
$15.49
We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.
Product Features:
See More
Product Features:
- High-precision and High-quality components used in all KITs
- Coverage of classic and new high-tech solutions for the best system coverage
Imperial – Econo-Kool Transmission Oil Cooler (Part No.242016)
from
$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.
Product Features:
See More
Product Features:
- Imperial Econo-Kool tube and fin transmission cooler
- Size: 3/4″ x 7-1/2″ x 15-7/8″
- Pickup trucks and vans, class “C” motor homes, travel trailers to 24′
- GVWR up to 22,000 lbs.; towing up to 5,000 lbs.
- Compatible with OEM cooler systems
- Ultrasonically soldered for reliability
- 100% pressure testing to 150 PSI for quality assurance
- High efficiency turbulators
- Compatible with OEM cooler systems
- Ultrasonically soldered for reliability
- 100% pressure testing to 150 PSI for quality assurance
- High efficiency turbulators
ATP – AT OVERHAUL KIT (Part No.JGS-52)
from
$76.99
AT OVERHAUL KIT
Driveworks – Tapered Roller Bearing (Part No.S-LM-603012)
National – Multi-Purpose Bearing (Part No.A-2)
from
$15.99
Product Features:
See More
- CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
- PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
- OE-STYLE DESIGN: Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
B & M – Governor Recalibration Kit For TH-700R4, TH-400 and TH-350 Transmission (Part No.20248)
from
$125.99
This kit allows you to adjust the shift points of your transmission after it is installed in your vehicle. The Governor Recalibration Kit is very useful if you have a vehicle that is very light; has a low rear-end gear ratio.
Product Features:
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Product Features:
- Adjust Shift Points Of Transmission
- Useful For Light Vehicles
- For Low Rear End Gear Ratio
- Or Useful If It Is Conversion
Driveworks – Oil Seal (Part No.S-6712NA)
from
$9.99
Value-priced seal meets all cataloged application requirements.
Product Features:
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Product Features:
- Brand may vary by location
ATP – AT SEL SHAFT SEAL (Part No.SO-19)
from
$8.99
AT SEL SHAFT SEAL
Imperial – Transmission Fitting Kit (Part No.240397)
from
$27.49
Product Features:
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- Transmission line fitting kit
- GM snap-in-style lines
- Helps simplify transmission cooler installation
- Allows for auxiliary transmission cooler installation without cutting OE lines
- Crafted from high-quality material that makes it durable and longer-lasting
- A high quality, direct fit OE replacement
- Easily connects the transmission cooler line to the cooler hose
- Precision machined
B & M – Aluminum Braided Dip Stick, Fits TH-400 Transmission (Part No.22166)
from
$124.99
What better way to check you oil level by using one of B&M’s transmission fluid dipsticks? The cap screws into the tube and is O-ring sealed, while the base of the tube has a sealing grommet where it goes into the transmission.
Product Features:
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Product Features:
- Automatic Transmission Dip Stick
Hays – Converter: Th400 28-3200 Stall (Part No.97-1D28Q)
from
$621.99
Converter: Th400 28-3200 Stall
B & M – Automatic Shifter, Megashifter-Right Hand Drive (Part No.80685)
from
$516.99
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. The light truck Megashifter is better suited for truck and bench seat app
Product Features:
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Product Features:
- Universal Floor Mount Application
- Cable Operated
- Quick Installation
- Accurate Shifting
- NHRA/IHRA Reverse Lockout Meets Requirements
Dorman – Transmission Oil Cooler Line: Exact Fit, Metal/Rubber (Part No.624-456)
from
$39.99
This automatic transmission oil cooler hose assembly is designed to match the fit and function of an original assembly. It is engineered from durable components as a reliable replacement for leaking or damaged lines on specified vehicles.
Product Features:
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Product Features:
- Direct replacement – this automatic transmission oil cooler hose assembly is designed to match the fit and function of the original equipment assembly on specified vehicle makes, models and years
- Ideal solution – engineered to help ensure proper transmission cooling when the original assembly is leaking or has failed from corrosion, collision, vibration, or fitting damage
- Durable construction – made of quality materials for reliable performance and long service life
- Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
ATP – AT OIL PUMP ORING (Part No.SO-21)
from
$8.99
AT OIL PUMP ORING
ATP – REUSABLE AT PAN GSKT (Part No.JG-137)
from
$64.99
REUSABLE AT PAN GSKT
B & M – Shift Improver Kit For 65-87 TH400 Transmission (Part No.20260)
from
$72.99
The B&M Shift Improver Kit the easiest way to get the performance you’ve always wanted out of your automatic transmission, two modes to select from: Heavy Duty, or Street/Strip. It’s our least expensive and simplest to install kit.
Product Features:
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Product Features:
- Provides Crisp Shifts
- On Any Stock Automatic Transmission
- Eliminates Soft/Sluggish Shift
- Eliminates Shift Overlap
- Eliminate Clutch and Band Wear
- Improves Transmission Life
- Transmission Removal Not Required
National – Multi-Purpose Seal (Part No.3543)
from
$9.99
National has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.
Product Features:
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Product Features:
- Design type: spring loaded; multi-lip
- Temperature range: -80 Deg. F to 350 Deg. F / -62 Deg. C to 176 Deg. C
- Good dry heat resistance
- Excellent low temperature capability
- Delivers quality and reliable performance for every type of repair
ATP – AT MODULATOR VALVE (Part No.JX-66)
from
$17.99
AT MODULATOR VALVE
Mr. Gasket – Automatic Transmission Oil Pan (Part No.9762)
from
$75.99
These pans are offered in stock depth or deep with extra capacity and available in both steel and aluminum to fit your specific needs. Includes drain plug, gasket and hardware.
Product Features:
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Product Features:
- Overall Height: 2.0″
- Stock Depth and Capacity
- Includes: Drain Plug, Washer & Gasket
National – Multi-Purpose Seal (Part No.7038SA)
from
$16.49
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.
Product Features:
See More
Product Features:
- Design type: spring loaded; multi-lip
- Temperature range: -40 Deg. F to 225 Deg. F / -40 Deg. C to 107 Deg. C
- Good low temperature capability
- Low swell in hydrocarbon fluids
- Delivers quality and reliable performance for every type of repair
Felpro – Axle Housing Cover Gasket Irregular Shaped 8 Bolt Hole Gasket (Part No.RDS 30094)
from
$8.29
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
See More
Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Unsurpassed quality you can trust
- Validated for fit, form and function
- Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
Dorman – Help – Brake and Clutch Bushings (Part No.74016)
from
$10.99
This brake pedal bushing is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.
Product Features:
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Product Features:
- Direct replacement – this brake pedal bushing matches the fit and function of the factory part on specified years, makes and models
- Ideal solution – this bushing is a reliable replacement for an original part that has failed due to fatigue
- Durable construction – this part is made from quality materials to ensure reliable performance and long service life
- Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
Felpro – Transmission Oil Pan Gasket 14 Bolt Hole One Piece Gasket (Part No.TOS 18509)
from
$10.49
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
Product Features:
See More
Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Unsurpassed quality you can trust
- Validated for fit, form and function
- Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
National – Multi-Purpose Bearing (Part No.207-L)
from
$33.99
Product Features:
See More
- BUILT TO LAST: Advanced heat treatment process for strength
- PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
- RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
- COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
Edelbrock – Automatic Trans Cable Adapter #8026 for GM 2004R, 700R4, 4L60 Transmissions (Part No.8026)
from
$19.99
Product Features:
See More
- Edelbrock Part # 8026 GM Transmission adapter is for use with 2004R, 700R4, 4L60 transmissions.
- This kit relocates the pin position on an Edelbrock Carburetor when hooking up to a throttle valve style transmission (700R4, 2004R, 4L60).
- The pin location is critical as the TV controls line pressure, shift points, shift firmness, and part throttle downshifts.
Upgrade your 1978 Cadillac Eldorado with Top-Quality Transmission Parts
When it comes to maintaining or upgrading your 1978 Cadillac Eldorado, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your Cadillac or enhancing its overall performance, Transmission Parts are key to keeping your Eldorado functioning at its best. At Advance Auto Parts, we offer a wide selection of 67 Transmission Parts for the 1978 Cadillac Eldorado, designed to meet your needs without breaking the bank.
From
Transmission Cooler and Part
replacements to
Automatic Transmission Pan and Gaskets
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 Cadillac Eldorado at great prices.
Our Transmission Parts inventory for this model
ranges from just $3.99 to $1,299.99, with
an average price of $231.27.
Our 67 Transmission Parts in stock come from 13 trusted brands, so you’re sure to find the right part for your 1978 Cadillac Eldorado 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 Cadillac Eldorado, we stock popular OEM and aftermarket Transmission Parts from top names
like Imperial, B & M, Pro-King, and more.
Imperial Transmission Parts
start at just $73.99 and boast an impressive 4.1 stars average rating from customers.
B & M and Pro-King also bring quality to the table, with Transmission Parts available starting at $33.99, and at an average 4.1 stars rating.
With 396 customer reviews and counting, our 1978 Cadillac Eldorado 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, Fluids and Chemicals
and more to make sure your 1978 Cadillac Eldorado is always ready to roll. We’re committed to providing you with everything you need to keep your Eldorado in top shape, all in one place.
Start shopping confidently below for your 1978 Cadillac Eldorado!
Best-Selling Transmission Cooler and Parts for 1978 Cadillac Eldorados
Enhance the driving experience in your Cadillac with 10 quality Transmission Cooler and Part components, starting at $25.99.
Imperial – High Performance Transmission Oil Cooler (Part No.240516)
from
$85.99
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.
Product Features:
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Product Features:
- Imperial high-performance transmission cooler
- Size: 3/4″ x 10″ x 15-7/8″
- SAE 45-degree fittings for maximum reliability
- Electrostatic powder-coated to prevent corrosion
- SAE 45 degree fittings for maximum reliability
- Electrostatically powder coated to prevent corrosion
- All aluminum lightweight construction
- SAE 45 degree fittings for maximum reliability
- Electrostatically powder coated to prevent corrosion
- All aluminum lightweight construction
Imperial – Maxi-Kool® XL Transmission Oil Cooler (Part No.243007)
from
$73.99
Product Features:
See More
- Imperial Maxi-Cool« plate and fin transmission cooler
- Size: 3/4″ x 11″ x 7-1/2″
- Mid-size and full-size cars, pickups
- GVWR up to 20,000 lbs.; towing up to 2,500 lbs.
- Compatible with OEM cooler systems
- Made with the highest quality materials
- 100% pressure testing to 150 PSI for quality assurance
- 33% more efficient than a comparable tube and fin design
Imperial – Maxi-Kool XL Transmission Oil Cooler (Part No.243012)
from
$85.99
The Imperial Maxi-Cool XL’s plate and fin design offer excellent cooling efficiency in a compact, space-efficient design.
Product Features:
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Product Features:
- Class “A” motor homes, large travel trailers, 5th-wheel trailers
- GVWR up to 30,000 lbs.; towing up to 10,000 lbs.
- Compatible with OEM cooler systems
- 33% more efficient than a comparable tube and fin design
Imperial – Econo-Kool Transmission Oil Cooler (Part No.241018)
from
$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.
Product Features:
See More
Product Features:
- Imperial Econo-Kool tube and fin transmission cooler
- Size: 3/4″ x 10″ x 15-7/8″
- Class “A” motor homes, large travel trailers, 5th-wheel trailers
- GVWR up to 26,000 lbs.; towing up to 10,000 lbs.
- Compatible with OEM cooler systems
- Ultrasonically soldered for reliability
- 100% pressure testing to 150 PSI for quality assurance
- High efficiency turbulators
- Compatible with OEM cooler systems
- Ultrasonically soldered for reliability
- 100% pressure testing to 150 PSI for quality assurance
- High efficiency turbulators
Imperial – Plate and Fin Style Transmission Cooler, Heavy Duty, 3/4" x 9-1/2" x 11" (Part No.243008)
from
$80.99
The Imperial Maxi-Cool XL’s plate and fin design offer excellent cooling efficiency in a compact, space-efficient design.
Product Features:
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Product Features:
- Imperial Rapid-Cool plate and fin transmission cooler
- Size: 3/4″ x 11″ x 9-1/2″
- Pickup trucks and vans, class “C” motor homes, travel trailers to 24′
- GVWR up to 24,000 lbs.; towing up to 5,000 lbs.
- 33% more efficient than a comparable tube and fin design
- Compatible with OEM cooler systems
- Made with the highest quality materials
- 100% pressure testing to 150 PSI for quality assurance
- 33% more efficient than a comparable tube and fin design
Imperial – Econo-Kool® Transmission Oil Cooler (Part No.242012)
from
$52.99
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.
Product Features:
See More
Product Features:
- Mid-size and full-size cars, pickups
- GVWR up to 18,000 lbs.; towing up to 3,500 lbs
- Compatible with OEM cooler systems
- Ultrasonically soldered for reliability
- 100% pressure testing to 150 PSI for quality assurance
- High efficiency turbulators
- Compatible with OEM cooler systems
- Ultrasonically soldered for reliability
- 100% pressure testing to 150 PSI for quality assurance
- High efficiency turbulators
Imperial – High Performance Transmission Oil Cooler (Part No.240514)
from
$83.99
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.
Product Features:
See More
Product Features:
- Imperial high-performance transmission cooler
- Size: 3/4″ x 7-1/2″ x 15-7/8″
- SAE 45-degree fittings for maximum reliability
- Electrostatic powder-coated to prevent corrosion
- Up to Class C motorhomes, towing up to 5,000 pounds
- SAE 45 degree fittings for maximum reliability
- Electrostatically powder coated to prevent corrosion
- All aluminum lightweight construction
Imperial – Transmission Oil Cooler Reinstallation Kit (Part No.248002)
from
$25.99
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.
Product Features:
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Product Features:
- Transmission cooler reinstallation kit
- Contains part numbers 248001, 226201, 240250 and 4 hose clamps
- Provides all hardware for reinstallation of Imperial transmission coolers
- Contains nylon mounting rods, foam pads, locking buttons, hose and fitting
- Made of high grade nylon for easy installation
- Removable buttons for cooler/fan relocation
- Made for both transmission coolers and electric fan installation
- Comes with Quick Connect coupler
Imperial – High Performance Transmission Oil Cooler (Part No.240512)
from
$67.99
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.
Product Features:
See More
Product Features:
- Imperial high-performance transmission cooler
- Size: 3/4″ x 7-1/2″ x 12-1/2″
- SAE 45-degree fittings for maximum reliability
- Electrostatic powder-coated to prevent corrosion
- SAE 45 degree fittings for maximum reliability
- Electrostatically powder coated to prevent corrosion
- All aluminum lightweight construction
- SAE 45 degree fittings for maximum reliability
- Electrostatically powder coated to prevent corrosion
- All aluminum lightweight construction
Imperial – Econo-Kool Transmission Oil Cooler (Part No.242016)
from
$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.
Product Features:
See More
Product Features:
- Imperial Econo-Kool tube and fin transmission cooler
- Size: 3/4″ x 7-1/2″ x 15-7/8″
- Pickup trucks and vans, class “C” motor homes, travel trailers to 24′
- GVWR up to 22,000 lbs.; towing up to 5,000 lbs.
- Compatible with OEM cooler systems
- Ultrasonically soldered for reliability
- 100% pressure testing to 150 PSI for quality assurance
- High efficiency turbulators
- Compatible with OEM cooler systems
- Ultrasonically soldered for reliability
- 100% pressure testing to 150 PSI for quality assurance
- High efficiency turbulators
Most Popular 1978 Cadillac Eldorado Automatic Transmission Pan and Gaskets
Customize your Cadillac with 6 Automatic Transmission Pan and Gaskets products
like Transmission Oil Pan Gaskets and
Transmission Pan Gaskets, all
priced under $285.99.
Felpro – Transmission Oil Pan Gasket 13 Bolt Hole One Piece Gasket (Part No.TOS 18621)
from
$9.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust.
Product Features:
See More
Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Unsurpassed quality you can trust
- Validated for fit, form and function
- Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
Mr. Gasket – Automatic Transmission Oil Pan (Part No.9762)
from
$75.99
These pans are offered in stock depth or deep with extra capacity and available in both steel and aluminum to fit your specific needs. Includes drain plug, gasket and hardware.
Product Features:
See More
Product Features:
- Overall Height: 2.0″
- Stock Depth and Capacity
- Includes: Drain Plug, Washer & Gasket
Mr. Gasket – Automatic Transmission Oil Pan Gasket (Part No.8691)
from
$34.99
Made from cork/neoprene gasket material which features excellent compressibility and high recovery to create a positive seal.
Product Features:
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Product Features:
- High density cork-nitrile rubber blend
- Excellent compressibility and high recovery to create a positive seal
- Excellent Compressibility
Mr. Gasket – Gaskets (Part No.61082MRG)
from
$43.99
These transmission oil pan gaskets are made with a glass-filled nylon carrier with molded rubber on both the top and bottom of the gasket. Each bolt hole has a torque limiter that helps to avoid over-torqueing the bolts for a reliable seal. These gasket are reusable and can be cleaned using soap and water. Ideal for applications that require frequent service. Made in the USA.
Product Features:
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Product Features:
- Molded rubber over glass filled nylon carrier
- Reusable ¿ easy cleaning w/ soap & water
- Reusable ┐ easy cleaning w/ soap & water
- Torque Limiters ¿ helps to avoid over torqueing gaskets
- Torque Limiters ┐ helps to avoid over torqueing gaskets
- Applications for many common transmissions
- Ideal for applications that require frequent service
- Made in the USA
B & M – Transmission Cast Deep Pan, Brushed Finish – TH400 (Part No.20280)
from
$285.99
Add fluid capacity to your transmission. Extra fluid means more cooling, and more cooling means better efficiency and performance. Add life to your transmission with a B&M Deep Pan! Adds 2 additional quarts to the system.
Product Features:
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Product Features:
- Additional Oil Capacity
- More Cooling Ability
- No Dipstick Modification
- Some Include Fluid Pickup Extension
- Built-In Drain Plugs
B & M – DEPTH PAN CHROME HP (Part No.20289)
from
$130.99
B&M Deep Transmission Pans increase the fluid capacity of your transmission, improving the cooling, allowing your transmission to work as efficiently as possible. Included drain plug, eliminates the need to drop the pan to drain the fluid.
Product Features:
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Product Features:
- Additional Oil Capacity
- More Cooling Ability
- No Dipstick Modification
- Some Include Fluid Pickup Extension
- Built-In Drain Plugs
- Chrome Plated Steel
Top Picks for 1978 Cadillac Eldorado Transmission Seals
Upgrade Cadillac Eldorados with top-quality Transmission Seals parts, including 4 OEM and aftermarket selections for your 1978 model.
ATP – AT SEL SHAFT SEAL (Part No.SO-19)
from
$8.99
AT SEL SHAFT SEAL
Felpro – Axle Housing Cover Gasket Irregular Shaped 8 Bolt Hole Gasket (Part No.RDS 30094)
from
$8.29
Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.
Product Features:
See More
Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Unsurpassed quality you can trust
- Validated for fit, form and function
- Each Fel-Pro gasket, no matter how small, is engineered to exacting standards with proprietary design, engineering and manufacturing processes
ATP – AT EXT HOUSING SEAL (Part No.JO-57)
from
$8.99
AT EXT HOUSING SEAL
National – Automatic Transmission Output Shaft Seal (Part No.470380V)
from
$11.29
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.
Product Features:
See More
Product Features:
- Design type: spring loaded; multi-lip
- Temperature range: -40 Deg. F to 400 Deg. F / -40 Deg. C to 204 Deg. C
- Excellent high temperature capabilities
- Compatible with wide range of fluids
- Delivers quality and reliable performance for every type of repair
In-Demand Transmission Bearings for 1978 Cadillac Eldorados
Select from 5 premium Transmission Bearings parts for your 1978 Cadillac Eldorado, with prices ranging from $7.99 to $44.99.
National – Multi-Purpose Bearing (Part No.A-2)
from
$15.99
Product Features:
See More
- CONSISTENT PERFORMANCE: Matched cup and cone components ensure consistent performance
- PREMIUM MATERIALS: Precision manufactured using premium-grade steel for outstanding durability and performance
- SMOOTH ROTATION: Crowned raceways and rollers for even load distribution
- OE-STYLE DESIGN: Engineered to meet OE specifications
- COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
National – Multi-Purpose Bearing (Part No.207-L)
from
$33.99
Product Features:
See More
- BUILT TO LAST: Advanced heat treatment process for strength
- PREMIUM MATERIALS: Precision manufactured using premium-grade steel for lasting performance and extended bearing life
- RELIABLE PERFORMANCE: Element size and quantity are engineered to meet or exceed the load rating of OE bearings
- COMPREHENSIVE COVERAGE: Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING: Comprehensive testing throughout design and development processes by National engineers for quality you can count on
Driveworks – Tapered Roller Bearing (Part No.S-LM-603012)
National – Multi-Purpose Bearing (Part No.305-DD)
from
$44.99
National Oil Seals & Bearings offer a full line of premium oil seals and bearings.
Product Features:
See More
Product Features:
- BUILT TO LAST — Advanced heat treatment process for strength
- PREMIUM MATERIALS — Precision manufactured using premium-grade steel for lasting performance and extended bearing life
- RELIABLE PERFORMANCE — Element size and quantity are engineered to meet or exceed the load rating of OE bearings
- COMPREHENSIVE COVERAGE — Industry-leading coverage for domestic and import applications
- RIGOROUS TESTING — Comprehensive testing throughout design and development processes by National engineers for quality you can count on
FAG US – Bearing (Part No.6207)
from
$15.49
We develop and produce high-quality roller bearings, spherical bearings, and plain bearings worldwide for a wide range of applications.
Product Features:
See More
Product Features:
- High-precision and High-quality components used in all KITs
- Coverage of classic and new high-tech solutions for the best system coverage
Most Sold 1978 Cadillac Eldorado Automatic Transmission Parts
Explore our best-selling Cadillac parts for the 1978 Eldorado among 12 OEM and aftermarket options starting from $3.99.
ATP – AT SOLENOID SEAL (Part No.JO-15)
from
$3.99
AT SOLENOID SEAL
Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-48)
from
$34.49
Fully adjustable vacuum modulator to maintain accurate shift points.
Product Features:
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Product Features:
- Meets or exceeds OE fit, form and function
Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-28)
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$33.99
Fully adjustable vacuum modulator to maintain accurate shift points.
Product Features:
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Product Features:
- Meets or exceeds OE fit, form and function
Edelbrock – Automatic Trans Cable Adapter #8026 for GM 2004R, 700R4, 4L60 Transmissions (Part No.8026)
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$19.99
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- Edelbrock Part # 8026 GM Transmission adapter is for use with 2004R, 700R4, 4L60 transmissions.
- This kit relocates the pin position on an Edelbrock Carburetor when hooking up to a throttle valve style transmission (700R4, 2004R, 4L60).
- The pin location is critical as the TV controls line pressure, shift points, shift firmness, and part throttle downshifts.
Dorman – Help – Brake and Clutch Bushings (Part No.74016)
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$10.99
This brake pedal bushing 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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Product Features:
- Direct replacement – this brake pedal bushing matches the fit and function of the factory part on specified years, makes and models
- Ideal solution – this bushing is a reliable replacement for an original part that has failed due to fatigue
- Durable construction – this part is made from quality materials to ensure reliable performance and long service life
- Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
ATP – AT OIL PUMP ORING (Part No.SO-21)
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$8.99
AT OIL PUMP ORING
ATP – AT MODULATOR VALVE (Part No.JX-76)
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$48.99
AT MODULATOR VALVE
ATP – AT MODULATOR VALVE (Part No.JX-66)
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$17.99
AT MODULATOR VALVE
ATP – AT FRT PUMP BUSHING (Part No.CB-4)
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$10.99
AT FRT PUMP BUSHING
B & M – Governor Recalibration Kit For TH-700R4, TH-400 and TH-350 Transmission (Part No.20248)
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$125.99
This kit allows you to adjust the shift points of your transmission after it is installed in your vehicle. The Governor Recalibration Kit is very useful if you have a vehicle that is very light; has a low rear-end gear ratio.
Product Features:
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Product Features:
- Adjust Shift Points Of Transmission
- Useful For Light Vehicles
- For Low Rear End Gear Ratio
- Or Useful If It Is Conversion
B & M – Aluminum Braided Dip Stick, Fits TH-400 Transmission (Part No.22166)
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$124.99
What better way to check you oil level by using one of B&M’s transmission fluid dipsticks? The cap screws into the tube and is O-ring sealed, while the base of the tube has a sealing grommet where it goes into the transmission.
Product Features:
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Product Features:
- Automatic Transmission Dip Stick
Carquest Premium – Automatic Transmission Modulator Valve (Part No.VMC1001)
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$68.99
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.
Product Features:
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Product Features:
- Application matched component ensures the transmission gear position system can be returned to like new condition.
- Product constructed to meet all design and operating characteristics as intended by the vehicle manufacturer.
- This part will look and function just like the original unit being replaced.
Top-Rated Transmission Parts Brands For Your 1978 Cadillac Eldorado
Shop for the best-rated brands offering Transmission Parts and other products for your 1978 Cadillac Eldorados. Below you’ll find some of our best rated Transmission Parts from Imperial, B & M, and Pro-King, and more. Transmission Parts from these brands that fit a 1978 Eldorado start at just $33.99 and are rated as high as 4.1 stars. OEM and aftermarket Transmission Parts don’t get more top quality, durable, and affordable than from the brands below.
Popular Imperial 1978 Cadillac Eldorado Transmission Parts
When it comes to maintaining or upgrading your 1978 Cadillac Eldorado, using quality Transmission Parts is essential to ensure durability and a perfect fit. Imperial ticks all of those boxes. We offer a wide selection of Imperial Transmission Parts, specifically designed for the 1978 Cadillac Eldorado. With over 3 Imperial brand Transmission Parts in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $73.99, with an average price of just $81.99. Plus, with over 42 customer reviews and an average rating of 4.1 stars, you can trust that our Imperial 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.
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$73.99
(7)
Maxi-Kool® XL Transmission Oil Cooler
“this transmission oil cooler is replacing my one on my 2000 dodge dakota its priced right mid size and easy to put in the ome one is 250 this is 60 an”
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$85.99
(31)
Maxi-Kool XL Transmission Oil Cooler
“Physical mounting straight forward (depends on your vehicle). This is the third one I’ve installed in towing vehicles, this year.
Actually made by Ha”
Popular B & M 1978 Cadillac Eldorado Transmission Parts
B & M auto parts is one of the highest quality Transmission Part brands in the market. Any 1978 Cadillac Eldorado owner should feel confident when installing genuine B & M parts in their vehicle. To ensure the best fit and performance for your 1978 Eldorado, Advance Auto Parts carries a full inventory of 3 B & M Transmission Parts. Plus you will be keeping your Cadillac in peak condition while saving money because prices on these B & M Transmission Parts range from $299.99 to $549.99, plus, with more than 5 customer reviews and an impressive 4.1 stars average rating, you can be confident the Fram Transmission Parts below will deliver on both quality and value.
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$362.99
(1)
Automatic Shifter, Sport Shifter
“This is a sweetly made product with that hotrod look and feel.This shifter was easy to install and
a knock out to drive.No down falls as far as I’m aw”
FAQs for 1978 Cadillac Eldorado Transmission Parts
Which Transmission Parts are best-sellers for 1978 Cadillac Eldorados?
Out of 67 Transmission Parts that fit 1978 Cadillac Eldorados, the following parts are the top sellers:
- Multi-Purpose Bearing (3275809) – $15.99
- Automatic Transmission Vacuum Modulator (5152976) – $34.49
- Multi-Purpose Seal (3270769) – $9.99
What’s the price range for 1978 Cadillac Eldorado Transmission Parts?
Transmission Part prices for the 1978 Cadillac Eldorado start at $3.99 and go up to $1,299.99 for the most premium parts.
What’s the average price of a Transmission Part for a 1978 Cadillac Eldorado?
The average price for Transmission Parts for the 1978 Cadillac Eldorado is $231.27. 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 Cadillac Eldorado model years?
What are the cheapest Transmission Parts for my 1978 Cadillac Eldorado?
The cheapest 1978 Cadillac Eldorado Transmission Parts we carry in stock are:
- AT SOLENOID SEAL (11239035) – $3.99
- Tapered Roller Bearing (10659441) – $7.99
- Axle Housing Cover Gasket Irregular Shaped 8 Bolt Hole Gasket (19780404) – $8.29
- AT SEL SHAFT SEAL (11236282) – $8.99
- AT OIL PUMP ORING (11236298) – $8.99
What are the top-rated Transmission Parts that fit the 1978 Cadillac Eldorado?
Out of 396 reviews by customers, our 1978 Cadillac Eldorado Transmission Parts have an average customer rating of . These are some of the highest-rated Transmission Part types for the 1978 Cadillac Eldorado and their top-rated products:
- Transmission Cooler and Parts
- Maxi-Kool® XL Transmission Oil Cooler (12031443) – $73.99
- High Performance Transmission Oil Cooler (15230020) – $85.99
- Econo-Kool® Transmission Oil Cooler (20230020) – $52.99
- Automatic Transmission Pan and Gaskets
- Maxi-Kool® XL Transmission Oil Cooler (12031443) – $73.99
- High Performance Transmission Oil Cooler (15230020) – $85.99
- Econo-Kool® Transmission Oil Cooler (20230020) – $52.99
- Transmission Connectors
- Maxi-Kool® XL Transmission Oil Cooler (12031443) – $73.99
- High Performance Transmission Oil Cooler (15230020) – $85.99
- Econo-Kool® Transmission Oil Cooler (20230020) – $52.99
What types of Transmission Parts do you sell for my 1978 Cadillac Eldorado?
As of 11/2/25, these are some of the most in-demand types of Transmission Parts for a 1978 Cadillac Eldorado:
Can I get help with 1978 Cadillac Eldorado Transmission Part orders?
Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Cadillac Transmission Parts and more.
What is your return policy for Cadillac Eldorado Transmission Parts?
Advance Auto Parts keeps returns simple. For new Cadillac Eldorado Transmission Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.
