1991 Cadillac DeVille Engine Blocks
Keep Your 1991 Cadillac DeVille in Top Shape with Quality Engine Blocks
Whether you’re repairing or upgrading your Engine Block, using high-quality parts is key to keeping your 1991 Cadillac DeVille looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Oil Pump Shafts, Oil Caps, and Engine Assembly Lube. 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 1991 Cadillac DeVille Engine Block at Advance Auto Parts is around $8.42, with a range that starts at $5.79 and goes up to $10.49. With 3 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack, Engine Assembly Lubricant, and Stock Replacement Type Oil Pump Intermediate Shaft start at just $5.79 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Engine Block, don’t forget to check out other key components like Camshafts and Engine Timing Parts. At Advance Auto Parts, we’re here to help you keep your 1991 Cadillac DeVille in peak condition, inside and out.
Find Your Specific 1991 Cadillac DeVille Engine Blocks
Looking for the perfect Engine Block for your 1991 Cadillac DeVille? You’re in the right place. Below, you’ll find links to various types of Engine Blocks that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Engine Blocks, ensuring durability and a precise fit for your Cadillac DeVille. Whether you’re driving a 1991 model or another popular model year like
1997,
1998,
1999,
2000,
2001,
2002,
2003,
2004, and
2005, we’ve got you covered. Purchasing Engine Blocks 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 Engine Blocks that fit your vehicle.
Essential 1991 Cadillac DeVille Engine Blocks
Melling – Stock Replacement Engine Assembly Lubricant (Part No.M-10012G)
from
$113.99
Product Features:
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- Superior Wear Protection – Formulated with extreme pressure additives to protect engine components from metal-to-metal contact during initial startup
- High Tackiness – Stays in place during assembly and storage, ensuring consistent lubrication exactly where it’s needed
- Broad Compatibility – Safe for use with all engine components including camshafts, lifters, bearings, and valve train parts
- Easy Startup Support – Reduces friction and prevents dry starts by providing instant lubrication during first engine fire-up
Melling – Stock Replacement Engine Assembly Lubricant, 4 oz. (Part No.M-10012)
from
$6.99
Product Features:
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- Superior Wear Protection – Formulated with extreme pressure additives to protect engine components from metal-to-metal contact during initial startup
- High Tackiness – Stays in place during assembly and storage, ensuring consistent lubrication exactly where it’s needed
- Broad Compatibility – Safe for use with all engine components including camshafts, lifters, bearings, and valve train parts
- Easy Startup Support – Reduces friction and prevents dry starts by providing instant lubrication during first engine fire-up
Sealed Power – Engine Assembly Lubricant (Part No.55-400)
from
$10.49
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
Product Features:
See More
Product Features:
- Formulated for prelubrication cam lobes, lifters & engine bearings
- Increases load carrying capacity
- Holds fast to surfaces
- Exacting tolerances
- Meets or exceeds OEM specifications
- 4.0 oz. Squeeze Container
Carquest Premium – Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10099)
from
$10.99
Manufactured from high quality components by an OE Supplier. Proper fit and sealing prevents oil loss. Designed to OEM specifications. High quality finish is designed to compliment the engine compartment appearance.
Product Features:
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Product Features:
- Provides proper seal to ensure leak prevention
- Stops engine blow by
- High quality construction
- Meets all OEM specifications
Carquest Premium – Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10066)
from
$6.99
Manufactured from high quality components by an OE Supplier. Proper fit and sealing prevents oil loss. Designed to OEM specifications. High quality finish is designed to compliment the engine compartment appearance.
Product Features:
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Product Features:
- Provides proper seal to ensure leak prevention
- Stops engine blow by
- High quality construction
- Meets all OEM specifications
Carquest Premium – Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10118)
from
$5.79
Manufactured from high quality components by an OE Supplier. Proper fit and sealing prevents oil loss. Designed to OEM specifications. High quality finish is designed to compliment the engine compartment appearance.
Product Features:
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Product Features:
- Provides proper seal to ensure leak prevention
- Stops engine blow by
- High quality construction
- Meets all OEM specifications
Carquest Premium – Oil Filler Cap (Part No.10097)
from
$7.79
Manufactured from high quality components by an OE Supplier. Proper fit and sealing prevents oil loss. Designed to OEM specifications. High quality finish is designed to compliment the engine compartment appearance.
Product Features:
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Product Features:
- Provides proper seal to ensure leak prevention
- Stops engine blow by
- High quality construction
- Meets all OEM specifications
Carquest Premium – Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10114)
from
$13.99
Manufactured from high quality components by an OE Supplier. Proper fit and sealing prevents oil loss. Designed to OEM specifications. High quality finish is designed to compliment the engine compartment appearance.
Product Features:
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Product Features:
- Provides proper seal to ensure leak prevention
- Stops engine blow by
- High quality construction
- Meets all OEM specifications
Dorman – Help – Engine Oil Filler Cap (Part No.42315)
from
$15.99
This engine oil filter cap is designed to match the fit and function of the original cap on specified vehicles, and is engineered for durability and reliable performance.
Product Features:
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Product Features:
- Direct replacement – this engine oil filter cap is designed to match the fit and function of the original cap on specified vehicles
- Restores functionality – reliable replacement for an original part that is missing or cracked due to heat and 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
Melling – Stock Replacement Type Oil Pump Intermediate Shaft (Part No.IS130)
from
$6.99
A new Melling oil pump shaft is recommended to complete every new oil pump install. Melling offers a complete line of high quality shafts for domestic and import pump applications. A new oil pump shaft is necessary due to possible metal fatigue, cracking
Product Features:
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Product Features:
- Manufactured from high quality materials for consistent durable wear
- Precision engineered for optimum fit and function
- Designed for long-life and worry-free performance
- Meets or exceeds original equipment specifications
Melling – Stock Replacement Type Oil Pump Intermediate Shaft (Part No.IS182)
from
$8.99
A new Melling oil pump shaft is recommended to complete every new oil pump install. Melling offers a complete line of high quality shafts for domestic and import pump applications. A new oil pump shaft is necessary due to possible metal fatigue, cracking
Product Features:
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Product Features:
- Manufactured from high quality materials for consistent durable wear
- Precision engineered for optimum fit and function
- Designed for long-life and worry-free performance
- Meets or exceeds original equipment specifications
Melling – Stock Replacement Type Oil Pump Intermediate Shaft (Part No.IS-22F)
from
$17.79
A new Melling oil pump shaft is recommended to complete every new oil pump install. Melling offers a complete line of high quality shafts for domestic and import pump applications. A new oil pump shaft is necessary due to possible metal fatigue, cracking
Product Features:
See More
Product Features:
- Manufactured from high quality materials for consistent durable wear
- Precision engineered for optimum fit and function
- Designed for long-life and worry-free performance
- Meets or exceeds original equipment specifications
Popular 1991 Cadillac DeVille Engine Blocks Categories
Most Popular Oil Pump Shaft for 1991 Cadillac DeVilles
Enhance your 1991 Cadillac DeVille with this popular Oil Pump Shaft we have in stock, for $8.99.
Melling – Stock Replacement Type Oil Pump Intermediate Shaft (Part No.IS182)
from
$8.99
A new Melling oil pump shaft is recommended to complete every new oil pump install. Melling offers a complete line of high quality shafts for domestic and import pump applications. A new oil pump shaft is necessary due to possible metal fatigue, cracking
Product Features:
See More
Product Features:
- Manufactured from high quality materials for consistent durable wear
- Precision engineered for optimum fit and function
- Designed for long-life and worry-free performance
- Meets or exceeds original equipment specifications
Best-Selling 1991 Cadillac DeVille Oil Cap
Upgrade your DeVille with our best-selling Oil Cap.
Carquest Premium – Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10118)
from
$5.79
Manufactured from high quality components by an OE Supplier. Proper fit and sealing prevents oil loss. Designed to OEM specifications. High quality finish is designed to compliment the engine compartment appearance.
Product Features:
See More
Product Features:
- Provides proper seal to ensure leak prevention
- Stops engine blow by
- High quality construction
- Meets all OEM specifications
Top-Quality Engine Assembly Lube for 1991 Cadillac DeVilles
Choose a high-quality OEM or aftermarket Engine Assembly Lube for Cadillac DeVilles and enjoy top-notch performance from $10.49.
Sealed Power – Engine Assembly Lubricant (Part No.55-400)
from
$10.49
Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.
Product Features:
See More
Product Features:
- Formulated for prelubrication cam lobes, lifters & engine bearings
- Increases load carrying capacity
- Holds fast to surfaces
- Exacting tolerances
- Meets or exceeds OEM specifications
- 4.0 oz. Squeeze Container
FAQs for 1991 Cadillac DeVille Engine Blocks
What are the best-selling Engine Blocks for 1991 Cadillac DeVilles?
Out of 3 Engine Blocks that fit 1991 Cadillac DeVilles, the following parts are the top sellers:
- Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (5020036) – $5.79
- Engine Assembly Lubricant (20686470) – $10.49
- Stock Replacement Type Oil Pump Intermediate Shaft (22680007) – $8.99
What’s the price range for 1991 Cadillac DeVille Engine Blocks?
The prices of Engine Blocks for the 1991 Cadillac DeVille range from $5.79 up to $10.49 for the most premium parts.
What is the average price of an Engine Block for a 1991 Cadillac DeVille?
The average price for Engine Blocks for the 1991 Cadillac DeVille is $8.42. Keep in mind the variety of part types within our Engine Block category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Engine Blocks for other Cadillac DeVille model years?
What are the cheapest Engine Blocks for my 1991 Cadillac DeVille?
The cheapest 1991 Cadillac DeVille Engine Blocks we carry are:
- Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (5020036) – $5.79
- Stock Replacement Type Oil Pump Intermediate Shaft (22680007) – $8.99
- Engine Assembly Lubricant (20686470) – $10.49
Does Advance Auto Parts sell Engine Blocks for any other 1991 Cadillac models?
Yes. We stock Engine Blocks for 4 other popular 1991 Cadillac models. Some of the most popular are 1991 Eldorado Engine Blocks, 1991 Seville Engine Blocks, 1991 Fleetwood Engine Blocks, 1991 Brougham Engine Blocks, and 1991 Allante Engine Blocks.
What types of Engine Blocks do you sell for my 1991 Cadillac DeVille?
As of 11/2/25, these are some of the most in-demand types of Engine Blocks for a 1991 Cadillac DeVille:
Can I get help with 1991 Cadillac DeVille Engine Block orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Cadillac Engine Blocks and more.
What is your return policy for Cadillac DeVille Engine Blocks?
Advance Auto Parts keeps returns simple. For new Cadillac DeVille Engine Blocks and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.