1978 Cadillac Eldorado Automatic Transmission Parts
Keep Your 1978 Cadillac Eldorado in Top Shape with Quality Automatic Transmission Parts
Whether you’re repairing or upgrading your Automatic Transmission Part, using high-quality parts is key to keeping your 1978 Cadillac Eldorado looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Transmission Modulator Valves, Transmission Bushings, and Automatic Transmission Governors. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Top-Rated Automatic Transmission Parts from Trusted Brands
Looking for a reliable Automatic Transmission Part? We’ve got you covered with options from brands you know and trust like Pro-King. For example, Pro-King Automatic Transmission Parts start at just $21.99 with an average 4.0 star rating. With over 48 reviews and a solid 5 star average, you can shop with confidence knowing other Cadillac Eldorado owners approve.
Competitive Prices and Extensive Inventory
The average price for a 1978 Cadillac Eldorado Automatic Transmission Part at Advance Auto Parts is around $37.96, with a range that starts at $4.29 and goes up to $128.99. With 11 options in stock from 4 trusted brands, finding the right fit is easy. Popular picks like Automatic Transmission Oil Pump O-Ring, AT MODULATOR VALVE, and AT MODULATOR VALVE start at just $9.59 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Automatic Transmission Part, don’t forget to check out other key components like Torque Converter and Related Products and Transmission Cooler and Parts. At Advance Auto Parts, we’re here to help you keep your 1978 Cadillac Eldorado in peak condition, inside and out.
Find Your Specific 1978 Cadillac Eldorado Automatic Transmission Parts
Looking for the perfect Automatic Transmission Part for your 1978 Cadillac Eldorado? You’re in the right place. Below, you’ll find links to various types of Automatic Transmission Parts that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Automatic Transmission Parts, ensuring durability and a precise fit for your Cadillac Eldorado. Whether you’re driving a 1978 model or another popular model year like
1994,
1995,
1996,
1997,
1998,
1999,
2000,
2001, and
2002, we’ve got you covered. Purchasing Automatic Transmission Parts from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Automatic Transmission Parts that fit your vehicle.
Essential 1978 Cadillac Eldorado Automatic Transmission Parts
ATP – Automatic Transmission Front Pump Bushing (Part No.CB-4)
ATP – Automatic Transmission Front Pump Bushing (Pump Body) (Part No.CB-30)
B & M – Governor Recalibration Kit For TH-700R4, TH-400 and TH-350 Transmission (Part No.20248)
from
$128.99
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
ATP – AT MODULATOR VALVE (Part No.JX-76)
from
$51.99
AT MODULATOR VALVE
ATP – AT MODULATOR VALVE (Part No.JX-70)
from
$49.99
AT MODULATOR VALVE
B & M – Modulator (Part No.20234)
from
$49.99
B&M’s vacuum modulator is fully adjustable, this allows you to tailor your shift points to within a range of 2-4 mph. Comes preadjusted for normal shift points. For TH350 and TH400.
Product Features:
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Product Features:
- Fully Adjustable
- Allows You To Tailor Shift Points
- Comes Supplied Pre-Adjusted
Carquest Premium – Automatic Transmission Modulator Valve (Part No.VMC1001)
from
$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.
ATP – AT MODULATOR VALVE (Part No.JX-66)
from
$21.99
AT MODULATOR VALVE
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 – Automatic Transmission Oil Pump O-Ring (Part No.SO-21)
from
$9.59
ATP Transmission Seals And Gaskets are exact fit, no compromise replacement parts
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ATP – Automatic Transmission Band (Intermediate) (Part No.CX-32)
from
$29.99
Automatic Transmission Band (Intermediate)
ATP – Automatic Transmission Band (Front) (Part No.JX-58)
ATP – Automatic Transmission Fluid Filler Tube Seal (Part No.JO-15)
from
$4.29
Automatic Transmission Fluid Filler Tube Seal
Popular 1978 Cadillac Eldorado Automatic Transmission Parts Categories
Most Popular Transmission Modulator Valves for 1978 Cadillac Eldorados
Enhance your 1978 Cadillac Eldorado with one of the 5 Transmission Modulator Valves we have in stock, starting at just $21.99.
Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-48)
from
$21.99
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
Pro-King – Automatic Transmission Vacuum Modulator (Part No.MD-28)
from
$33.99
Fully adjustable vacuum modulator to maintain accurate shift points.
Product Features:
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Product Features:
- Meets or exceeds OE specifications
ATP – AT MODULATOR VALVE (Part No.JX-76)
from
$51.99
AT MODULATOR VALVE
ATP – AT MODULATOR VALVE (Part No.JX-66)
from
$21.99
AT MODULATOR VALVE
Carquest Premium – Automatic Transmission Modulator Valve (Part No.VMC1001)
from
$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:
See More
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.
Best-Selling 1978 Cadillac Eldorado Transmission Bushing
Upgrade your Eldorado with our best-selling Transmission Bushing.
ATP – Automatic Transmission Front Pump Bushing (Part No.CB-4)
Top-Quality Automatic Transmission Governors for 1978 Cadillac Eldorados
Choose a high-quality OEM or aftermarket Automatic Transmission Governor for Cadillac Eldorados and enjoy top-notch performance from $128.99.
B & M – Governor Recalibration Kit For TH-700R4, TH-400 and TH-350 Transmission (Part No.20248)
from
$128.99
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:
See More
Product Features:
- Adjust Shift Points Of Transmission
- Useful For Light Vehicles
- For Low Rear End Gear Ratio
- Or Useful If It Is Conversion
Our Top Pick for a 1978 Cadillac Eldorado Automatic Transmission Fluid Filler Tube Seal
Invest in a
durable Automatic Transmission Fluid Filler Tube Seal for your 1978 Cadillac, knowing you’re getting trusted brands and expert craftsmanship.
ATP – Automatic Transmission Fluid Filler Tube Seal (Part No.JO-15)
from
$4.29
Automatic Transmission Fluid Filler Tube Seal
Our Transmission Bands for 1978 Cadillac Eldorados
Make a smart move for your 1978 Cadillac Eldorado with our Transmission Band for $29.99.
ATP – Automatic Transmission Band (Front) (Part No.JX-58)
Top-Rated Automatic Transmission Part Brands For Your 1978 Cadillac Eldorado
When it comes to finding the perfect Automatic Transmission Part for your 1978 Cadillac Eldorado, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 4 trusted brands. We carry the most popular Automatic Transmission Part brands including Pro-King, and more, all known for their exceptional customer ratings (average brand rating of 4.0 stars) and competitive prices, as low as $21.99. Purchasing a Automatic Transmission Part from us here at Advance Auto Parts is a smart move for both you and your 1978 Cadillac Eldorado, providing peace of mind with parts that meet or exceed OEM standards.
Popular Pro-King 1978 Cadillac Eldorado Automatic Transmission Parts
If you’re looking for a top-quality Automatic Transmission Part for your 1978 Cadillac Eldorado, Advance Auto Parts has exactly what you need with our selection of Pro-King Automatic Transmission Parts. We have 2 Pro-King Automatic Transmission Parts in stock for this fitment, all known for their durability and precision fit. With prices starting at just $21.99 and an average cost of $27.99, you’ll find the perfect Automatic Transmission Part for your needs and budget. Pro-King Automatic Transmission Parts for the 1978 Cadillac Eldorado come highly rated, with over 22 customer reviews and an impressive average rating of 4.0 stars. Choosing a Pro-King Automatic Transmission Part from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
from
$33.99
(11)
Automatic Transmission Vacuum Modulator
“I have a 1988 Buick Reatta that recently begun to fail to shift. After trying things such as changing the filter and fluid, we eventually were recomme”
FAQs for 1978 Cadillac Eldorado Automatic Transmission Parts
What are the best-selling Automatic Transmission Parts for 1978 Cadillac Eldorados?
Out of 11 Automatic Transmission Parts that fit 1978 Cadillac Eldorados, the following parts are the top sellers:
- Automatic Transmission Oil Pump O-Ring (11236298) – $9.59
- AT MODULATOR VALVE (11239048) – $51.99
- AT MODULATOR VALVE (11239193) – $21.99
What’s the price range for 1978 Cadillac Eldorado Automatic Transmission Parts?
The prices of Automatic Transmission Parts for the 1978 Cadillac Eldorado range from $4.29 up to $128.99 for the most premium parts.
What is the average price of an Automatic Transmission Part for a 1978 Cadillac Eldorado?
The average price for Automatic Transmission Parts for the 1978 Cadillac Eldorado is $37.96. Keep in mind the variety of part types within our Automatic Transmission Part category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Automatic Transmission Parts for other Cadillac Eldorado model years?
What are the cheapest Automatic Transmission Parts for my 1978 Cadillac Eldorado?
The cheapest 1978 Cadillac Eldorado Automatic Transmission Parts we carry are:
- Automatic Transmission Fluid Filler Tube Seal (11239035) – $4.29
- Automatic Transmission Oil Pump O-Ring (11236298) – $9.59
- Automatic Transmission Front Pump Bushing (11237261) – $11.79
- Automatic Transmission Vacuum Modulator (5152976) – $21.99
- AT MODULATOR VALVE (11239193) – $21.99
Does Advance Auto Parts sell Automatic Transmission Parts for any other 1978 Cadillac models?
Yes. We stock Automatic Transmission Parts for 3 other popular 1978 Cadillac models. Some of the most popular are 1978 DeVille Automatic Transmission Parts, 1978 Seville Automatic Transmission Parts, 1978 Fleetwood Automatic Transmission Parts, and 1978 Commercial Chassis Automatic Transmission Parts.
What are the top-rated Automatic Transmission Parts that fit the 1978 Cadillac Eldorado?
Based on 48 reviews by customers, our 1978 Cadillac Eldorado Automatic Transmission Parts have an average customer rating of 5 stars. These are the highest-rated categories of Automatic Transmission Parts for the 1978 Cadillac Eldorado and their top-rated products:
- Transmission Modulator Valves
- Automatic Transmission Vacuum Modulator (5152976) – $21.99
- Automatic Transmission Vacuum Modulator (5152925) – $33.99
- Automatic Transmission Fluid Filler Tube Seals
- Automatic Transmission Fluid Filler Tube Seal (11239035) – $4.29
What types of Automatic Transmission Parts do you sell for my 1978 Cadillac Eldorado?
As of 6/2/26, these are some of the most in-demand types of Automatic Transmission Parts for a 1978 Cadillac Eldorado:
Can I get help with 1978 Cadillac Eldorado Automatic 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 Automatic Transmission Parts and more.
What is your return policy for Cadillac Eldorado Automatic Transmission Parts?
Advance Auto Parts keeps returns simple. For new Cadillac Eldorado Automatic Transmission Parts and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.