1991 GMC C6000 Topkick Engine Blocks
Keep Your 1991 GMC C6000 Topkick 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 GMC C6000 Topkick looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Engine Assembly Lube, , and Oil Pump Shafts. 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 and Melling. For example, Engine Blocks start at just $8.49 with an average 4.4 star rating. Melling offer similar pricing and quality, backed by strong customer feedback. With over 20 reviews and a solid 5 star average, you can shop with confidence knowing other GMC C6000 Topkick owners approve.
Competitive Prices and Extensive Inventory
The average price for a 1991 GMC C6000 Topkick Engine Block at Advance Auto Parts is around $12.82, with a range that starts at $8.49 and goes up to $23.99. With 5 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Stock Replacement Type Oil Pump Intermediate Shaft, Stock Replacement Type Oil Pump Intermediate Shaft, and Engine Oil Pump Intermediate Shaft start at just $10.49 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 GMC C6000 Topkick in peak condition, inside and out.
Find Your Specific 1991 GMC C6000 Topkick Engine Blocks
Looking for the perfect Engine Block for your 1991 GMC C6000 Topkick? 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 C6000 Topkick. Whether you’re driving a 1991 model or another popular model year like
1990,
1992,
1993,
1994,
1995, and
1996, 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 GMC C6000 Topkick Engine Blocks
Carquest Premium – Engine Oil Filler Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10105)
from
$8.49
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
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
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:
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Product Features:
- Formulated for pre-lubrication 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
Melling – Stock Replacement Type Oil Pump Intermediate Shaft (Part No.IS-77A)
from
$12.79
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:
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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
Sealed Power – Engine Oil Pump Intermediate Shaft (Part No.224-6154)
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:
- Unsurpassed quality that you can trust
- Uses leading edge materials
- State-of-the-art manufacturing
- Exacting tolerances
- Meets or exceeds OEM specifications
Melling – Stock Replacement Type Oil Pump Intermediate Shaft (Part No.IS-77)
from
$23.99
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
Popular 1991 GMC C6000 Topkick Engine Blocks Categories
Most Popular Engine Assembly Lube for 1991 GMC C6000 Topkicks
Enhance your 1991 GMC C6000 Topkick with this popular Engine Assembly Lube we have in stock, for $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 pre-lubrication 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
Best-Selling 1991 GMC C6000 Topkick Oil Cap
Upgrade your C6000 Topkick with our best-selling Oil Cap with a 5 Starts rating across 6 reviews.
Carquest Premium – Engine Oil Filler Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack (Part No.10105)
from
$8.49
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 Oil Pump Shafts for 1991 GMC C6000 Topkicks
Choose a high-quality OEM or aftermarket Oil Pump Shaft for GMC C6000 Topkicks and enjoy top-notch performance from $10.49.
Melling – Stock Replacement Type Oil Pump Intermediate Shaft (Part No.IS-77)
from
$23.99
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
Melling – Stock Replacement Type Oil Pump Intermediate Shaft (Part No.IS-77A)
from
$12.79
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
Sealed Power – Engine Oil Pump Intermediate Shaft (Part No.224-6154)
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:
- Unsurpassed quality that you can trust
- Uses leading edge materials
- State-of-the-art manufacturing
- Exacting tolerances
- Meets or exceeds OEM specifications
Top-Rated Engine Block Brands For Your 1991 GMC C6000 Topkick
When it comes to finding the perfect Engine Block for your 1991 GMC C6000 Topkick, 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 and Melling, and more, all known for their exceptional customer ratings (average brand rating of 4.4 stars) and competitive prices, as low as $8.49. Purchasing a Engine Block from us here at Advance Auto Parts is a smart move for both you and your 1991 GMC C6000 Topkick, providing peace of mind with parts that meet or exceed OEM standards.
Popular Carquest Premium 1991 GMC C6000 Topkick Engine Blocks
If you’re looking for a top-quality Engine Block for your 1991 GMC C6000 Topkick, Advance Auto Parts has exactly what you need with our selection of Carquest Premium Engine Blocks. We have 1 Carquest Premium Engine Blocks in stock for this fitment, all known for their durability and precision fit. With prices starting at just $8.49, you’ll find the perfect Engine Block for your needs and budget. Carquest Premium Engine Blocks for the 1991 GMC C6000 Topkick come highly rated, with over 6 customer reviews and an impressive average rating of 4.4 stars. Choosing a Carquest Premium Engine Block from Advance Auto Parts is a smart move to ensure quality and value for your vehicle.
from
$8.49
(6)
Engine Oil Filler Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack
“Perfect fit”
Top-Quality Melling 1991 GMC C6000 Topkick Engine Blocks
For those in search of a high-quality Engine Block for their 1991 GMC C6000 Topkick, Advance Auto Parts offers a great selection of Melling Engine Blocks. With 1 Melling 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 $23.99, giving you a range of options to suit your budget. Backed by over 1 customer ratings and an average rating of 4.3 stars, Melling Engine Blocks provide both reliability and excellent performance. Choosing a Melling Engine Block from Advance Auto Parts is a smart investment in your vehicle’s performance and longevity.
from
$23.99
(1)
Stock Replacement Type Oil Pump Intermediate Shaft
“It is a good product at a price that cannot be beaten.”
FAQs for 1991 GMC C6000 Topkick Engine Blocks
What are the best-selling Engine Blocks for 1991 GMC C6000 Topkicks?
Out of 5 Engine Blocks that fit 1991 GMC C6000 Topkicks, the following parts are the top sellers:
- Stock Replacement Type Oil Pump Intermediate Shaft (3681602) – $23.99
- Stock Replacement Type Oil Pump Intermediate Shaft (5680875) – $12.79
- Engine Oil Pump Intermediate Shaft (10999103) – $10.49
What’s the price range for 1991 GMC C6000 Topkick Engine Blocks?
The prices of Engine Blocks for the 1991 GMC C6000 Topkick range from $8.49 up to $23.99 for the most premium parts.
What is the average price of an Engine Block for a 1991 GMC C6000 Topkick?
The average price for Engine Blocks for the 1991 GMC C6000 Topkick is $12.82. 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 C6000 Topkick model years?
What are the cheapest Engine Blocks for my 1991 GMC C6000 Topkick?
The cheapest 1991 GMC C6000 Topkick Engine Blocks we carry are:
- Engine Oil Filler Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack (18481436) – $8.49
- Engine Oil Pump Intermediate Shaft (10999103) – $10.49
- Engine Assembly Lubricant (20686470) – $10.49
- Stock Replacement Type Oil Pump Intermediate Shaft (5680875) – $12.79
- Stock Replacement Type Oil Pump Intermediate Shaft (3681602) – $23.99
Does Advance Auto Parts sell Engine Blocks for any other 1991 GMC models?
Yes. We stock Engine Blocks for 21 other popular 1991 GMC models. Some of the most popular are 1991 Jimmy Engine Blocks, 1991 K2500 Engine Blocks, 1991 C2500 Engine Blocks, 1991 C1500 Engine Blocks, and 1991 Sonoma Engine Blocks.
What are the top-rated Engine Blocks that fit the 1991 GMC C6000 Topkick?
Based on 20 reviews by customers, our 1991 GMC C6000 Topkick Engine Blocks have an average customer rating of 5 stars. These are the highest-rated categories of Engine Blocks for the 1991 GMC C6000 Topkick and their top-rated products:
- Oil Caps
- Engine Oil Filler Cap: Screw On, Direct Fit, Provides Tight Seal, 1 Pack (18481436) – $8.49
- Oil Pump Shafts
- Stock Replacement Type Oil Pump Intermediate Shaft (3681602) – $23.99
What types of Engine Blocks do you sell for my 1991 GMC C6000 Topkick?
As of 3/1/26, these are some of the most in-demand types of Engine Blocks for a 1991 GMC C6000 Topkick:
Can I get help with 1991 GMC C6000 Topkick 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 C6000 Topkick Engine Blocks?
Advance Auto Parts keeps returns simple. For new GMC C6000 Topkick Engine Blocks and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.