1981 Checker Marathon Engine Blocks
Keep Your 1981 Checker Marathon 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 1981 Checker Marathon looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Oil Pump Shafts 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 1981 Checker Marathon Engine Block at Advance Auto Parts is around $16.29, with a range that starts at $10.49 and goes up to $24.99. With 2 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like For Use With All Chevy Small Blocks, 8740 Steel, 190000 Psi and Engine Assembly Lubricant 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 Engine Gaskets and Seals and Engine Timing Parts. At Advance Auto Parts, we’re here to help you keep your 1981 Checker Marathon in peak condition, inside and out.
Find Your Specific 1981 Checker Marathon Engine Blocks
Looking for the perfect Engine Block for your 1981 Checker Marathon? 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 Checker Marathon. Whether you’re driving a 1981 model or another popular model year like
1961,
1962,
1963,
1964,
1969,
1970,
1971,
1976, and
1982, 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 1981 Checker Marathon Engine Blocks
ARP Auto Racing – For Use With All Chevy Small Blocks, 8740 Steel, 190000 Psi (Part No.134-7901)
from
$24.99
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 Premium Grade 8740 And Heat Treated To 190,000 Psi
- Alignment Sleeve Is Roll Formed Onto The Shaft (Not Welded Or Pinned), Enabling The Sleeve To Float, Allowing For Slight Misalignment
- Black Oxide
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
Popular 1981 Checker Marathon Engine Blocks Categories
Most Popular Oil Pump Shaft for 1981 Checker Marathons
Enhance your 1981 Checker Marathon with this popular Oil Pump Shaft we have in stock, for $24.99.
ARP Auto Racing – For Use With All Chevy Small Blocks, 8740 Steel, 190000 Psi (Part No.134-7901)
from
$24.99
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 Premium Grade 8740 And Heat Treated To 190,000 Psi
- Alignment Sleeve Is Roll Formed Onto The Shaft (Not Welded Or Pinned), Enabling The Sleeve To Float, Allowing For Slight Misalignment
- Black Oxide
Best-Selling 1981 Checker Marathon Engine Assembly Lube
Upgrade your Marathon with our best-selling Engine Assembly Lube.
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 1981 Checker Marathon Engine Blocks
What are the best-selling Engine Blocks for 1981 Checker Marathons?
Out of 2 Engine Blocks that fit 1981 Checker Marathons, the following parts are the top sellers:
- For Use With All Chevy Small Blocks, 8740 Steel, 190000 Psi (11530101) – $24.99
- Engine Assembly Lubricant (20686470) – $10.49
What’s the price range for 1981 Checker Marathon Engine Blocks?
The prices of Engine Blocks for the 1981 Checker Marathon range from $10.49 up to $24.99 for the most premium parts.
What is the average price of an Engine Block for a 1981 Checker Marathon?
The average price for Engine Blocks for the 1981 Checker Marathon is $16.29. 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 Checker Marathon model years?
What are the cheapest Engine Blocks for my 1981 Checker Marathon?
The cheapest 1981 Checker Marathon Engine Blocks we carry are:
- Engine Assembly Lubricant (20686470) – $10.49
- For Use With All Chevy Small Blocks, 8740 Steel, 190000 Psi (11530101) – $24.99
What types of Engine Blocks do you sell for my 1981 Checker Marathon?
As of 11/2/25, these are some of the most in-demand types of Engine Blocks for a 1981 Checker Marathon:
Can I get help with 1981 Checker Marathon Engine Block orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Checker Engine Blocks and more.
What is your return policy for Checker Marathon Engine Blocks?
Advance Auto Parts keeps returns simple. For new Checker Marathon Engine Blocks and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.