2003 GMC Sierra 1500 Engine Blocks
Keep Your 2003 GMC Sierra 1500 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 2003 GMC Sierra 1500 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Oil Pump Shafts and Oil Caps. 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 Engine Blocks from Trusted Brands
Looking for a reliable Engine Block? We’ve got you covered with options from brands you know and trust like Melling and Dorman. For example, Melling Engine Blocks start at just $22.99 with an average 4.3 star rating. Dorman offer similar pricing and quality, backed by strong customer feedback. With over 623 reviews and a solid 3.7 star average, you can shop with confidence knowing other GMC Sierra 1500 owners approve.
Competitive Prices and Extensive Inventory
The average price for a 2003 GMC Sierra 1500 Engine Block at Advance Auto Parts is around $15.34, with a range that starts at $11.99 and goes up to $22.99. With 5 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Dorman – Help Engine Oil Fill Cap, 80987, Dorman – Help Engine Oil Filler Cap, 42315, and Melling Stock Replacement Type Oil Pump Intermediate Shaft, IS-55G start at just $15.99 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 Engine Gaskets and Seals and Engine Timing Parts. At Advance Auto Parts, we’re here to help you keep your 2003 GMC Sierra 1500 in peak condition, inside and out.
Find Your Specific 2003 GMC Sierra 1500 Engine Blocks
Looking for the perfect Engine Block for your 2003 GMC Sierra 1500? 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 GMC Sierra 1500. Whether you’re driving a 2003 model or another popular model year like
2005,
2006,
2007,
2008,
2009,
2010,
2011,
2012, and
2013, 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 GMC Sierra 1500 Engine Blocks
Melling Select Performance – Melling Select Performance Engine Oil Pump Intermediate Shaft, 12550 (Part No.12550)
from
$34.99
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 and even twisting damage of the old shaft even when the part appears to be in good condition. Complete every Melling oil pump replacement with a new Melling oil pump shaft.
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Melling – Melling Stock Replacement Type Oil Pump Intermediate Shaft, IS-55E (Part No.IS-55E)
from
$22.99
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 and even twisting damage of the old shaft even when the part appears to be in good condition. Complete every Melling oil pump replacement with a new Melling oil pump shaft.
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Melling – Melling Stock Replacement Type Oil Pump Intermediate Shaft, IS-55G (Part No.IS-55G)
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 and even twisting damage of the old shaft even when the part appears to be in good condition. Complete every Melling oil pump replacement with a new Melling oil pump shaft.
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Carquest Premium – Carquest Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack, 10099 (Part No.10099)
from
$11.99
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.
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Dorman – Help – Dorman – Help Engine Oil Filler Cap, 42315 (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.
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Carquest Premium – Carquest Oil Filler Cap, MO190 (Part No.MO190)
from
$22.29
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.
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Dorman – Help – Dorman – Help Engine Oil Fill Cap, 80987 (Part No.80987)
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.
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Popular 2003 GMC Sierra 1500 Engine Blocks Categories
Most Popular Oil Pump Shafts for 2003 GMC Sierra 1500s
Enhance your 2003 GMC Sierra 1500 with one of the 2 Oil Pump Shafts we have in stock, starting at just $17.79.
Melling – Melling Stock Replacement Type Oil Pump Intermediate Shaft, IS-55E (Part No.IS-55E)
from
$22.99
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 and even twisting damage of the old shaft even when the part appears to be in good condition. Complete every Melling oil pump replacement with a new Melling oil pump shaft.
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Melling – Melling Stock Replacement Type Oil Pump Intermediate Shaft, IS-55G (Part No.IS-55G)
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 and even twisting damage of the old shaft even when the part appears to be in good condition. Complete every Melling oil pump replacement with a new Melling oil pump shaft.
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Best-Selling 2003 GMC Sierra 1500 Oil Caps
Upgrade your Sierra 1500 with one of our 3 best-selling Oil Caps, earning an average 3.5 stars rating across 28 reviews.
Dorman – Help – Dorman – Help Engine Oil Fill Cap, 80987 (Part No.80987)
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.
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Carquest Premium – Carquest Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack, 10099 (Part No.10099)
from
$11.99
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.
See More
Dorman – Help – Dorman – Help Engine Oil Filler Cap, 42315 (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.
See More
Top-Rated Engine Block Brands For Your 2003 GMC Sierra 1500
When it comes to finding the perfect Engine Block for your 2003 GMC Sierra 1500, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 3 trusted brands. We carry the most popular Engine Block brands including Melling and Dorman, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $15.99. Purchasing a Engine Block from us here at Advance Auto Parts is a smart move for both you and your 2003 GMC Sierra 1500, providing peace of mind with parts that meet or exceed OEM standards.
Popular Melling 2003 GMC Sierra 1500 Engine Blocks
If you’re looking for a top-quality Engine Block for your 2003 GMC Sierra 1500, Advance Auto Parts has exactly what you need with our selection of Melling Engine Blocks. We have 1 Melling Engine Blocks in stock for this fitment, all known for their durability and precision fit. With prices starting at just $22.99, you’ll find the perfect Engine Block for your needs and budget. Melling Engine Blocks for the 2003 GMC Sierra 1500 come highly rated, with over 7 customer reviews and an impressive average rating of 4.3 stars. Choosing a Melling Engine Block from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
from
$22.99
(7)
Melling Stock Replacement Type Oil Pump Intermediate Shaft, IS-55E
“After checking several sources Advance Auto hadthe best value.”
Top-Quality Dorman 2003 GMC Sierra 1500 Engine Blocks
For those in search of a high-quality Engine Block for their 2003 GMC Sierra 1500, Advance Auto Parts offers a great selection of Dorman Engine Blocks. With 1 Dorman Engine Blocks in stock, you can trust you’re getting top-tier parts designed for durability and a perfect fit. Prices for these Engine Blocks start at just $15.99, giving you a range of options to suit your budget. Backed by over 6 customer ratings and an average rating of 4.2 stars, Dorman Engine Blocks provide both reliability and excellent performance. Choosing a Dorman Engine Block from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
FAQs for 2003 GMC Sierra 1500 Engine Blocks
What are the best-selling Engine Blocks for 2003 GMC Sierra 1500s?
Out of 5 Engine Blocks that fit 2003 GMC Sierra 1500s, the following parts are the top sellers:
- Dorman – Help Engine Oil Fill Cap, 80987 (11438477) – $15.99
- Dorman – Help Engine Oil Filler Cap, 42315 (11454153) – $15.99
- Melling Stock Replacement Type Oil Pump Intermediate Shaft, IS-55G (5687837) – $17.79
What’s the price range for 2003 GMC Sierra 1500 Engine Blocks?
The prices of Engine Blocks for the 2003 GMC Sierra 1500 range from $11.99 up to $22.99 for the most premium parts.
What is the average price of an Engine Block for a 2003 GMC Sierra 1500?
The average price for Engine Blocks for the 2003 GMC Sierra 1500 is $15.34. 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 GMC Sierra 1500 model years?
What are the cheapest Engine Blocks for my 2003 GMC Sierra 1500?
The cheapest 2003 GMC Sierra 1500 Engine Blocks we carry are:
- Carquest Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack, 10099 (18481430) – $11.99
- Dorman – Help Engine Oil Fill Cap, 80987 (11438477) – $15.99
- Dorman – Help Engine Oil Filler Cap, 42315 (11454153) – $15.99
- Melling Stock Replacement Type Oil Pump Intermediate Shaft, IS-55G (5687837) – $17.79
- Melling Stock Replacement Type Oil Pump Intermediate Shaft, IS-55E (3681491) – $22.99
Does Advance Auto Parts sell Engine Blocks for any other 2003 GMC models?
Yes. We stock Engine Blocks for 18 other popular 2003 GMC models. Some of the most popular are 2003 Yukon Engine Blocks, 2003 Yukon XL 1500 Engine Blocks, 2003 Sierra 2500 HD Engine Blocks, 2003 Yukon XL 2500 Engine Blocks, and 2003 Savana 1500 Engine Blocks.
What are the top-rated Engine Blocks that fit the 2003 GMC Sierra 1500?
Based on 623 reviews by customers, our 2003 GMC Sierra 1500 Engine Blocks have an average customer rating of 3.7 stars. These are the highest-rated categories of Engine Blocks for the 2003 GMC Sierra 1500 and their top-rated products:
- Oil Pump Shafts
- Melling Stock Replacement Type Oil Pump Intermediate Shaft, IS-55E (3681491) – $22.99
- Oil Caps
- Dorman – Help Engine Oil Fill Cap, 80987 (11438477) – $15.99
- Carquest Engine Oil Filler Cap: Twist-Lock, Direct Fit, Provides Tight Seal, 1 Pack, 10099 (18481430) – $11.99
What types of Engine Blocks do you sell for my 2003 GMC Sierra 1500?
As of 8/2/26, these are some of the most in-demand types of Engine Blocks for a 2003 GMC Sierra 1500:
Can I get help with 2003 GMC Sierra 1500 Engine Block orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Engine Blocks and more.
What is your return policy for GMC Sierra 1500 Engine Blocks?
Advance Auto Parts keeps returns simple. For new GMC Sierra 1500 Engine Blocks and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.