2003 Cadillac CTS Engine Blocks
Keep Your 2003 Cadillac CTS in Top Shape with a Quality Engine Block
When it comes to maintaining or upgrading your 2003 Cadillac CTS, choosing high-quality parts is crucial for ensuring your vehicle stays in top shape, whether you’re tackling a repair or enhancing performance. At Advance Auto Parts, we know how important it is to find the right Engine Block for your CTS. We currently carry a top Engine Block in stock that is built to last. Whether you’re replacing a damaged Engine Block or looking to upgrade, our selection for the 2003 Cadillac CTS ensures you’ll find exactly what you need to keep your vehicle looking and performing its best.
Explore Related Parts
And while you’re here, don’t forget to check out related part categories like Engine Gaskets and Seals and Engine Timing Parts to complete your upgrade or repair project. At Advance Auto Parts, we’re proud to offer the parts and expertise to keep your 2003 Cadillac CTS running smoothly and looking great.
Find Your Specific 2003 Cadillac CTS Engine Blocks
Looking for the perfect Engine Block for your 2003 Cadillac CTS? You’re in the right place. Below, you’ll find a Engine Block from a trusted manufacturer that is a perfect fit for 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 CTS. Whether you’re driving a 2003 model or another popular model year like
2009,
2010,
2011,
2012,
2013,
2014,
2015,
2016, and
2017, 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 2003 Cadillac CTS Engine Blocks
Holley – LS Valve Cover Oil Fill Cap (Part No.241-225)
from
$31.99
Holleys new Oil Fill Cap for LS engines removes the oil fill tube that come stock on LS engines and replaces it with a cap that can be configured five ways plus custom option! Our cap screws directly into all stock valve covers! The base is made of the same glass-filled material as the factory to ensure durability. Each cap comes with an aluminum insert that can easily be painted before assembly, and a domed Holley decal can be placed on the aluminum insert or directly onto the cap base! With paint in hand, the options are endless!
Product Features:
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Product Features:
- Qty Of 1
- Includes O-Ring
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.10140)
from
$22.99
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:
See More
Product Features:
- Provides proper seal to ensure leak prevention
- Stops engine blow by
- High quality construction
- Meets all OEM specifications
Popular 2003 Cadillac CTS Engine Blocks Categories
Most Popular Oil Cap for 2003 Cadillac CTSs
Enhance your 2003 Cadillac CTS with this popular Oil Cap we have in stock, for $22.99.
Carquest Premium – Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10140)
from
$22.99
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:
See More
Product Features:
- Provides proper seal to ensure leak prevention
- Stops engine blow by
- High quality construction
- Meets all OEM specifications
FAQs for 2003 Cadillac CTS Engine Blocks
What’s the price range for 2003 Cadillac CTS Engine Blocks?
We currently have just one Engine Blocks for the 2003 Cadillac CTS in stock: Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack and it costs $22.99.
Does Advance Auto Parts sell Engine Blocks for other Cadillac CTS model years?
Does Advance Auto Parts sell Engine Blocks for any other 2003 Cadillac models?
Yes. We stock Engine Blocks for 4 other popular 2003 Cadillac models. Some of the most popular are 2003 Escalade Engine Blocks, 2003 Escalade ESV Engine Blocks, 2003 Escalade EXT Engine Blocks, 2003 DeVille Engine Blocks, and 2003 Seville Engine Blocks.
What are the top-rated Engine Blocks that fit the 2003 Cadillac CTS?
The one 2003 Cadillac CTS Engine Block we have in stock is the Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack. It is rated 1 stars and costs $22.99.
What types of Engine Blocks do you sell for my 2003 Cadillac CTS?
We currently have just 1 Engine Block in stock for a 2003 Cadillac CTS, and as of 11/2/25, it is an Oil Cap.
Can I get help with 2003 Cadillac CTS 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 CTS Engine Blocks?
Advance Auto Parts keeps returns simple. For new Cadillac CTS Engine Blocks and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.