1978 Cadillac DeVille Flywheels
Keep Your 1978 Cadillac DeVille in Top Shape with Quality Flywheels
Whether you’re repairing or upgrading your Flywheel, using high-quality parts is key to keeping your 1978 Cadillac DeVille looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Flywheel Shims, Clutch Flywheel Covers, and Flywheels and Flexplates. 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.
Competitive Prices and Extensive Inventory
The average price for a 1978 Cadillac DeVille Flywheel at Advance Auto Parts is around $123.99, with a range that starts at $29.99 and goes up to $287.99. With 4 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like ATP Automatic Transmission Flex Plate, Z-124, ATP Flywheel Shim, GS-8, and Hays SFI Flexplate:68-84 Cad 368-500 166T: In, 14-010 start at just $29.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Flywheel, don’t forget to check out other key components like Clutch Forks and Clutch Pilot Bearings. At Advance Auto Parts, we’re here to help you keep your 1978 Cadillac DeVille in peak condition, inside and out.
Find Your Specific 1978 Cadillac DeVille Flywheels
Looking for the perfect Flywheel for your 1978 Cadillac DeVille? You’re in the right place. Below, you’ll find links to various types of Flywheels that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Flywheels, ensuring durability and a precise fit for your Cadillac DeVille. Whether you’re driving a 1978 model or another popular model year like
1996,
1997,
1998,
1999,
2000,
2001,
2002,
2003, and
2004, we’ve got you covered. Purchasing Flywheels 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 Flywheels that fit your vehicle.
Essential 1978 Cadillac DeVille Flywheels
Mr. Gasket – Mr. Gasket Flywheel Dust Cover, 5135 (Part No.5135)
from
$73.99
Keeps dust, rocks, and debris out of the flex plate and torque converter. *Needs modification for Olds/Pontiac Starters on the driver’s side.
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ATP – ATP Flywheel Shim, GS-4 (Part No.GS-4)
from
$28.99
ATP Flywheel Shims install easily restoring machined manual transmission flywheels back to the proper height. On automatic transmissions the shim takes up excessive clearance caused by engine crankshaft endplay or by installing a rebuilt torque converter or rebuilt front pump.
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ATP – ATP Flywheel Shim, GS-3 (Part No.GS-3)
from
$31.99
ATP Flywheel Shims install easily restoring machined manual transmission flywheels back to the proper height. On automatic transmissions the shim takes up excessive clearance caused by engine crankshaft endplay or by installing a rebuilt torque converter or rebuilt front pump.
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ATP – ATP Flywheel Shim, GS-8 (Part No.GS-8)
from
$29.99
ATP Flywheel Shims install easily restoring machined manual transmission flywheels back to the proper height. On automatic transmissions the shim takes up excessive clearance caused by engine crankshaft endplay or by installing a rebuilt torque converter or rebuilt front pump.
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ATP – ATP Automatic Transmission Flex Plate, Z-188 (Part No.Z-188)
from
$69.99
Vehicles with automatic transmissions have a flex plate. Flex plates connect the engine and transmission. Most flex plates are made of a thick piece of sheet metal with bolt holes for the torque converter and teeth for the starter. The job of a flex plate is to allow for expansion of the torque converter as engine RPM increases. The constant expansion and contraction of a flex plate over time can result cracks and/or shearing of the flex plate. A damaged flex plate can create serious (expensive) damage. Broken flex plates can not be repaired, they must be replaced. ATP flex plates are made of high quality steel and contain the correct bolt hole spacing and ring gear teeth just like the original part to ensure long life and durability
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ATP – ATP Automatic Transmission Flex Plate, Z-249 (Part No.Z-249)
from
$103.99
Vehicles with automatic transmissions have a flex plate. The flex plates connect the engine and transmission. Most flex plates are made of a thick piece of sheet metal with bolt holes for the torque converter and teeth for the starter. The job of a flex plate is to allow for expansion of the torque converter as engine RPM increases. The constant expansion and contraction of a flex plate over time can result cracks and/or shearing of the flex plate. A damaged flex plate can create serious and expensive damage. Broken flex plates cannot be repaired, they must be replaced. Pioneer Flex Plates are made of high-quality steel and contain the correct bolt hole spacing and ring gear teeth just like the original part to ensure long life and durability.
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ATP – ATP Automatic Transmission Flex Plate, Z-124 (Part No.Z-124)
from
$103.99
Vehicles with automatic transmissions have a flex plate. The flex plates connects the engine and transmission. Most flex plates are made of a thick piece of sheet metal with bolt holes for the torque converter and teeth for the starter. The job of a flex plate is to allow for expansion of the torque converter as engine RPM increases. The constant expansion and contraction of a flex plate over time can result cracks and/or shearing of the flex plate. A damaged flex plate can create serious (expensive) damage. Broken flex plates can not be repaired, they must be replaced. ATP flex plates are made of high quality steel and contain the correct bolt hole spacing and ring gear teeth just like the original part to ensure long life and durability
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Hays – Hays SFI Flexplate:68-84 Cad 368-500 166T: In, 14-010 (Part No.14-010)
from
$287.99
Hays heavy-duty flexplates for high performance and competition engines are constructed of a thicker than stock steel plate, enabling them to withstand the stress of high-stall torque converters and today’s high-RPM engines. While factory stock plates tend to crack around the crankshaft hub when punished under high torque and RPM conditions, the thicker Hays Flexplate handles the force. These H.D. flexplates are supplied with a ring gear that is securely welded in place and feature dual bolt patterns for flexibility in adapting to multiple transmission style torque converters. All Hays heavy-duty flexplates are zinc-dichromate plated to resist corrosion and are SFI certified under specification 29.1.
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ATP – ATP Automatic Transmission Flex Plate, Z-151 (Part No.Z-151)
from
$53.99
Vehicles with automatic transmissions have a flex plate. The flex plates connects the engine and transmission. Most flex plates are made of a thick piece of sheet metal with bolt holes for the torque converter and teeth for the starter. The job of a flex plate is to allow for expansion of the torque converter as engine RPM increases. The constant expansion and contraction of a flex plate over time can result cracks and/or shearing of the flex plate. A damaged flex plate can create serious (expensive) damage. Broken flex plates can not be repaired, they must be replaced. ATP flex plates are made of high quality steel and contain the correct bolt hole spacing and ring gear teeth just like the original part to ensure long life and durability
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Popular 1978 Cadillac DeVille Flywheels Categories
Most Popular Flywheel Shim for 1978 Cadillac DeVilles
Enhance your 1978 Cadillac DeVille with this popular Flywheel Shim we have in stock, for $29.99.
ATP – ATP Flywheel Shim, GS-8 (Part No.GS-8)
from
$29.99
ATP Flywheel Shims install easily restoring machined manual transmission flywheels back to the proper height. On automatic transmissions the shim takes up excessive clearance caused by engine crankshaft endplay or by installing a rebuilt torque converter or rebuilt front pump.
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Best-Selling 1978 Cadillac DeVille Clutch Flywheel Cover
Upgrade your DeVille with our best-selling Clutch Flywheel Cover with a 1 Starts rating across 1 review.
Mr. Gasket – Mr. Gasket Flywheel Dust Cover, 5135 (Part No.5135)
from
$73.99
Keeps dust, rocks, and debris out of the flex plate and torque converter. *Needs modification for Olds/Pontiac Starters on the driver’s side.
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Top-Quality Flywheels and Flexplates for 1978 Cadillac DeVilles
Choose a high-quality OEM or aftermarket Flywheels and Flexplate for Cadillac DeVilles and enjoy top-notch performance from $103.99.
ATP – ATP Automatic Transmission Flex Plate, Z-124 (Part No.Z-124)
from
$103.99
Vehicles with automatic transmissions have a flex plate. The flex plates connects the engine and transmission. Most flex plates are made of a thick piece of sheet metal with bolt holes for the torque converter and teeth for the starter. The job of a flex plate is to allow for expansion of the torque converter as engine RPM increases. The constant expansion and contraction of a flex plate over time can result cracks and/or shearing of the flex plate. A damaged flex plate can create serious (expensive) damage. Broken flex plates can not be repaired, they must be replaced. ATP flex plates are made of high quality steel and contain the correct bolt hole spacing and ring gear teeth just like the original part to ensure long life and durability
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Hays – Hays SFI Flexplate:68-84 Cad 368-500 166T: In, 14-010 (Part No.14-010)
from
$287.99
Hays heavy-duty flexplates for high performance and competition engines are constructed of a thicker than stock steel plate, enabling them to withstand the stress of high-stall torque converters and today’s high-RPM engines. While factory stock plates tend to crack around the crankshaft hub when punished under high torque and RPM conditions, the thicker Hays Flexplate handles the force. These H.D. flexplates are supplied with a ring gear that is securely welded in place and feature dual bolt patterns for flexibility in adapting to multiple transmission style torque converters. All Hays heavy-duty flexplates are zinc-dichromate plated to resist corrosion and are SFI certified under specification 29.1.
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FAQs for 1978 Cadillac DeVille Flywheels
What are the best-selling Flywheels for 1978 Cadillac DeVilles?
Out of 4 Flywheels that fit 1978 Cadillac DeVilles, the following parts are the top sellers:
- ATP Automatic Transmission Flex Plate, Z-124 (5610214) – $103.99
- ATP Flywheel Shim, GS-8 (10860864) – $29.99
- Hays SFI Flexplate:68-84 Cad 368-500 166T: In, 14-010 (12247361) – $287.99
What’s the price range for 1978 Cadillac DeVille Flywheels?
The prices of Flywheels for the 1978 Cadillac DeVille range from $29.99 up to $287.99 for the most premium parts.
What is the average price of a Flywheel for a 1978 Cadillac DeVille?
The average price for Flywheels for the 1978 Cadillac DeVille is $123.99. Keep in mind the variety of part types within our Flywheel category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Flywheels for other Cadillac DeVille model years?
What are the cheapest Flywheels for my 1978 Cadillac DeVille?
The cheapest 1978 Cadillac DeVille Flywheels we carry are:
- ATP Flywheel Shim, GS-8 (10860864) – $29.99
- Mr. Gasket Flywheel Dust Cover, 5135 (10648807) – $73.99
- ATP Automatic Transmission Flex Plate, Z-124 (5610214) – $103.99
- Hays SFI Flexplate:68-84 Cad 368-500 166T: In, 14-010 (12247361) – $287.99
Does Advance Auto Parts sell Flywheels for any other 1978 Cadillac models?
Yes. We stock Flywheels for 3 other popular 1978 Cadillac models. Some of the most popular are 1978 Eldorado Flywheels, 1978 Seville Flywheels, 1978 Fleetwood Flywheels, and 1978 Commercial Chassis Flywheels.
What are the top-rated Flywheels that fit the 1978 Cadillac DeVille?
The one 1978 Cadillac DeVille Flywheel we have in stock is the ATP Flywheel Shim, GS-8. It costs $29.99.
What types of Flywheels do you sell for my 1978 Cadillac DeVille?
As of 8/2/26, these are some of the most in-demand types of Flywheels for a 1978 Cadillac DeVille:
Can I get help with 1978 Cadillac DeVille Flywheel orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Cadillac Flywheels and more.
What is your return policy for Cadillac DeVille Flywheels?
Advance Auto Parts keeps returns simple. For new Cadillac DeVille Flywheels and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.