1975 Mercury Comet Engine Blocks
Keep Your 1975 Mercury Comet 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 1975 Mercury Comet 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 Melling. For example, Melling Engine Blocks start at just $16.99 with an average 4.3 star rating. With over 2 reviews and a solid 5 star average, you can shop with confidence knowing other Mercury Comet owners approve.
Competitive Prices and Extensive Inventory
The average price for a 1975 Mercury Comet Engine Block at Advance Auto Parts is around $24.41, with a range that starts at $6.99 and goes up to $113.99. With 9 options in stock from 4 trusted brands, finding the right fit is easy. Popular picks like Stock Replacement Engine Assembly Lubricant, 4 oz., Stock Replacement Engine Assembly Lubricant, and Stock Replacement Type Oil Pump Intermediate Shaft start at just $6.99 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 1975 Mercury Comet in peak condition, inside and out.
Find Your Specific 1975 Mercury Comet Engine Blocks
Looking for the perfect Engine Block for your 1975 Mercury Comet? 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 Mercury Comet. Whether you’re driving a 1975 model or another popular model year like
1967,
1968,
1969,
1971,
1972,
1973,
1974,
1976, and
1977, 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 1975 Mercury Comet Engine Blocks
ARP Auto Racing – For Use With 289/ 302 Cubic Inch/ Boss 302 Ford, Apr2000 Steel, 220000 Psi (Part No.154-7904)
from
$31.99
Many an engine has been destroyed as a result of oil pump driveshaft failure. To cure this all too common problem, ARP has designed an extra heavy duty shaft that will provide you with the necessary reliability. The shaft is made from heat treated, premium grade aerospace chrome moly steel. Moreover, the shaft diameter is a larger diameter than the OEM unit. These features combine to enable ARP shafts to handle the added torque requirements of increased capacity oil pumps or heavy viscosity lubricants.
Product Features:
See More
Product Features:
- Extra Heavy Duty Shaft That Will Provide The Necessary Reliability
- Enable Shafts To Handle The Added Torque Requirements Of Increased Capacity Oil Pumps Or Heavy Viscosity Lubricants
- Made From Arp2000 And Heat Treated To 220,000 Psi
- CNC Milled (Not Broached) Hex, And Has The Retaining Washer Installed
Melling Select Performance – Engine Oil Pump Intermediate Shaft (Part No.12680)
from
$31.99
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.
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 Select Performance – Engine Oil Pump Intermediate Shaft (Part No.12830)
from
$30.49
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.
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.224-61118)
from
$10.29
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-83)
from
$17.99
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-68)
from
$16.99
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-65L)
from
$10.49
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-60)
from
$23.49
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.
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-82)
from
$10.49
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.224-61166)
from
$9.79
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-65B)
from
$14.29
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-84A)
from
$21.49
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 Engine Assembly Lubricant, 4 oz. (Part No.M-10012)
from
$6.99
Product Features:
See More
- 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
Melling – Stock Replacement Engine Assembly Lubricant (Part No.M-10012G)
from
$113.99
Product Features:
See More
- 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
Popular 1975 Mercury Comet Engine Blocks Categories
Most Popular Engine Assembly Lube for 1975 Mercury Comets
Enhance your 1975 Mercury Comet with one of the 3 Engine Assembly Lube we have in stock, starting at just $6.99.
Melling – Stock Replacement Engine Assembly Lubricant (Part No.M-10012G)
from
$113.99
Product Features:
See More
- 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
Melling – Stock Replacement Engine Assembly Lubricant, 4 oz. (Part No.M-10012)
from
$6.99
Product Features:
See More
- 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
Best-Selling 1975 Mercury Comet Oil Pump Shafts
Upgrade your Comet with one of our 6 best-selling Oil Pump Shafts, earning an average 4.5 stars rating across 2 reviews.
Melling – Stock Replacement Type Oil Pump Intermediate Shaft (Part No.IS-68)
from
$16.99
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 Select Performance – Engine Oil Pump Intermediate Shaft (Part No.12680)
from
$31.99
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.
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
ARP Auto Racing – For Use With 289/ 302 Cubic Inch/ Boss 302 Ford, Apr2000 Steel, 220000 Psi (Part No.154-7904)
from
$31.99
Many an engine has been destroyed as a result of oil pump driveshaft failure. To cure this all too common problem, ARP has designed an extra heavy duty shaft that will provide you with the necessary reliability. The shaft is made from heat treated, premium grade aerospace chrome moly steel. Moreover, the shaft diameter is a larger diameter than the OEM unit. These features combine to enable ARP shafts to handle the added torque requirements of increased capacity oil pumps or heavy viscosity lubricants.
Product Features:
See More
Product Features:
- Extra Heavy Duty Shaft That Will Provide The Necessary Reliability
- Enable Shafts To Handle The Added Torque Requirements Of Increased Capacity Oil Pumps Or Heavy Viscosity Lubricants
- Made From Arp2000 And Heat Treated To 220,000 Psi
- CNC Milled (Not Broached) Hex, And Has The Retaining Washer Installed
Melling – Stock Replacement Type Oil Pump Intermediate Shaft (Part No.IS-65B)
from
$14.29
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-82)
from
$10.49
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.224-61118)
from
$10.29
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 1975 Mercury Comet
When it comes to finding the perfect Engine Block for your 1975 Mercury Comet, Advance Auto Parts has you covered with a wide selection of high-quality OEM and aftermarket options from 4 trusted brands. We carry the most popular Engine Block brands including Melling, and more, all known for their exceptional customer ratings (average brand rating of 4.3 stars) and competitive prices, as low as $16.99. Purchasing a Engine Block from us here at Advance Auto Parts is a smart move for both you and your 1975 Mercury Comet, providing peace of mind with parts that meet or exceed OEM standards.
Popular Melling 1975 Mercury Comet Engine Blocks
If you’re looking for a top-quality Engine Block for your 1975 Mercury Comet, 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 $16.99, you’ll find the perfect Engine Block for your needs and budget. Melling Engine Blocks for the 1975 Mercury Comet come highly rated, with over 2 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
$16.99
(2)
Stock Replacement Type Oil Pump Intermediate Shaft
“This part does what is needed. I was seriously considering purchasing the heavy duty unit by Ford Racing, but it really hit me that my truck doesn’t ”
FAQs for 1975 Mercury Comet Engine Blocks
What are the best-selling Engine Blocks for 1975 Mercury Comets?
Out of 9 Engine Blocks that fit 1975 Mercury Comets, the following parts are the top sellers:
- Stock Replacement Engine Assembly Lubricant, 4 oz. (50175373) – $6.99
- Stock Replacement Engine Assembly Lubricant (50175377) – $113.99
- Stock Replacement Type Oil Pump Intermediate Shaft (3681599) – $14.29
What’s the price range for 1975 Mercury Comet Engine Blocks?
The prices of Engine Blocks for the 1975 Mercury Comet range from $6.99 up to $113.99 for the most premium parts.
What is the average price of an Engine Block for a 1975 Mercury Comet?
The average price for Engine Blocks for the 1975 Mercury Comet is $24.41. 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 Mercury Comet model years?
What are the cheapest Engine Blocks for my 1975 Mercury Comet?
The cheapest 1975 Mercury Comet Engine Blocks we carry are:
- Stock Replacement Engine Assembly Lubricant, 4 oz. (50175373) – $6.99
- Engine Oil Pump Intermediate Shaft (20686159) – $10.29
- Engine Assembly Lubricant (20686470) – $10.49
- Stock Replacement Type Oil Pump Intermediate Shaft (3681610) – $10.49
- Stock Replacement Type Oil Pump Intermediate Shaft (3681599) – $14.29
Does Advance Auto Parts sell Engine Blocks for any other 1975 Mercury models?
Yes. We stock Engine Blocks for 6 other popular 1975 Mercury models. Some of the most popular are 1975 Cougar Engine Blocks, 1975 Grand Marquis Engine Blocks, 1975 Montego Engine Blocks, 1975 Capri Engine Blocks, and 1975 Marquis Engine Blocks.
What are the top-rated Engine Blocks that fit the 1975 Mercury Comet?
The one 1975 Mercury Comet Engine Block we have in stock is the Stock Replacement Engine Assembly Lubricant, 4 oz.. It costs $6.99.
What types of Engine Blocks do you sell for my 1975 Mercury Comet?
As of 11/2/25, these are some of the most in-demand types of Engine Blocks for a 1975 Mercury Comet:
Can I get help with 1975 Mercury Comet Engine Block orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Mercury Engine Blocks and more.
What is your return policy for Mercury Comet Engine Blocks?
Advance Auto Parts keeps returns simple. For new Mercury Comet Engine Blocks and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.