1955 GMC FM340 Engine Internals

Please Select your Vehicle to See Exact Fit Parts

Keep Your 1955 GMC FM340 in Top Shape with Quality Engine Internals

Whether you’re repairing or upgrading your Engine Internal, using high-quality parts is key to keeping your 1955 GMC FM340 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Oversized Piston Rings, Crankshaft Bolts, and Standard Piston Rings. 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 1955 GMC FM340 Engine Internal at Advance Auto Parts is around $116.70, with a range that starts at $39.99 and goes up to $354.99. With 9 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like "ARP Auto Racing For Use With Chevy Small Block, 5/8"" Socket Size, 3/4"" – 16 Thread Size, 134-2501", ARP Auto Racing For Use With Chevy Small Block Large Journal, 4 Bolt Main, Hex Head, Chrome Moly, 134-5202, and Sealed Power Engine Piston Ring Set, E-240X 30 start at just $39.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Engine Internal, 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 1955 GMC FM340 in peak condition, inside and out.

Essential 1955 GMC FM340 Engine Internals

ARP Auto Racing – ARP Auto Racing For Use With Chevy Small Block Large Journal, 4 Bolt Main, Hex Head, Chrome Moly, 134-5202 (Part No.134-5202)

ARP Auto Racing For Use With Chevy Small Block Large Journal, 4 Bolt Main, Hex Head, Chrome Moly, 134-5202

from

$85.99
Far superior to any other main bolt kit offered for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, all bolts feature generous under head radius and rolled threads for the utmost reliability. The threads are rolled after heat treating, which makes them about 1000 Percent longer fatigue life than most main bolts, which are threaded prior to heat treating. Available in the popular High Performance Series, which, at a nominal rating of 180,000 PSI, is a premium replacement for OEM fasteners, or the 200,000 PSI nominal rated Pro Series, application specific main bolts with reduced wrenching head and are designed for use in competition applications. Parallel ground, hardened washers are included with each kit.
See More

ARP Auto Racing – ARP Auto Racing For Use With Chevy Gen Iii/Ls Series Small Block/ Gmpp Lsx Block, Hex Head, 234-5608 (Part No.234-5608)

ARP Auto Racing For Use With Chevy Gen Iii/Ls Series Small Block/ Gmpp Lsx Block, Hex Head, 234-5608

from

$354.99
There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel ground washers and high quality nuts. Some applications have provisions for mounting wind age trays and have specially designed standoff studs with serrated lock nuts to position the wind age tray and lock it securely in place. The studs are manufactured from 8740 chrome moly steel, heat treated in-house to 200,000 Pounds Per Square Inch tensile strength, and precision J-form threads rolled after heat treat to create a fastener that has threads 1000 Percent stronger than others.
See More

ARP Auto Racing – "ARP Auto Racing For Use With Chevy Small Block, 13/16"" Socket Size, 2.470"" Under Head L, 234-2501" (Part No.234-2501)

"ARP Auto Racing For Use With Chevy Small Block, 13/16"" Socket Size, 2.470"" Under Head L, 234-2501"

from

$46.99
As the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure that the balancer is locked in position, ARP has developed these ultra strong 200,000 Pounds Per Square Inch bolts that let you exert maximum clamping force. Special features comes with 1/4 Inch thick, wide area washer and an extra tall 12 point head that accepts a deep socket and eliminates the worry of stripping the head.
See More

ARP Auto Racing – "ARP Auto Racing For Use With Chevy Small Block, 5/8"" Socket Size, 3/4"" – 16 Thread Size, 134-2501" (Part No.134-2501)

"ARP Auto Racing For Use With Chevy Small Block, 5/8"" Socket Size, 3/4"" - 16 Thread Size, 134-2501"

from

$39.99
As the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure that the balancer is locked in position, ARP has developed these ultra strong 200,000 PSI bolts that let you exert maximum clamping force. Special features include 1/4 Inch thick, wide area washer and an extra tall 12 point head that accepts a deep socket and eliminates the worry of stripping the head.
See More

Sealed Power – Sealed Power Engine Piston Ring Set, E-240X 40 (Part No.E-240X 40)

Sealed Power Engine Piston Ring Set, E-240X 40

from

$59.99
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.
See More

Sealed Power – Sealed Power Engine Piston Ring Set, E-240X 30 (Part No.E-240X 30)

Sealed Power Engine Piston Ring Set, E-240X 30

from

$59.99
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.
See More

Sealed Power – Sealed Power Engine Piston Ring Set, E-240X (Part No.E-240X)

Sealed Power Engine Piston Ring Set, E-240X

from

$66.99
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.
See More

Sealed Power – Sealed Power Engine Piston Ring Set, E-240K 40 (Part No.E-240K 40)

Sealed Power Engine Piston Ring Set, E-240K 40

from

$104.99
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.
See More

Sealed Power – Sealed Power Engine Piston Ring Set, E-240K 30 (Part No.E-240K 30)

Sealed Power Engine Piston Ring Set, E-240K 30

from

$107.99
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.
See More

Most Popular Oversized Piston Rings for 1955 GMC FM340s

Enhance your 1955 GMC FM340 with one of the 2 Oversized Piston Rings we have in stock, starting at just $104.99.

Sealed Power – Sealed Power Engine Piston Ring Set, E-240K 30 (Part No.E-240K 30)

Sealed Power Engine Piston Ring Set, E-240K 30

from

$107.99
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.
See More

Sealed Power – Sealed Power Engine Piston Ring Set, E-240K 40 (Part No.E-240K 40)

Sealed Power Engine Piston Ring Set, E-240K 40

from

$104.99
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.
See More

Best-Selling 1955 GMC FM340 Crankshaft Bolts

Upgrade your FM340 with one of our 4 best-selling Crankshaft Bolts.

ARP Auto Racing – "ARP Auto Racing For Use With Chevy Small Block, 5/8"" Socket Size, 3/4"" – 16 Thread Size, 134-2501" (Part No.134-2501)

"ARP Auto Racing For Use With Chevy Small Block, 5/8"" Socket Size, 3/4"" - 16 Thread Size, 134-2501"

from

$39.99
As the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure that the balancer is locked in position, ARP has developed these ultra strong 200,000 PSI bolts that let you exert maximum clamping force. Special features include 1/4 Inch thick, wide area washer and an extra tall 12 point head that accepts a deep socket and eliminates the worry of stripping the head.
See More

ARP Auto Racing – ARP Auto Racing For Use With Chevy Small Block Large Journal, 4 Bolt Main, Hex Head, Chrome Moly, 134-5202 (Part No.134-5202)

ARP Auto Racing For Use With Chevy Small Block Large Journal, 4 Bolt Main, Hex Head, Chrome Moly, 134-5202

from

$85.99
Far superior to any other main bolt kit offered for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly, all bolts feature generous under head radius and rolled threads for the utmost reliability. The threads are rolled after heat treating, which makes them about 1000 Percent longer fatigue life than most main bolts, which are threaded prior to heat treating. Available in the popular High Performance Series, which, at a nominal rating of 180,000 PSI, is a premium replacement for OEM fasteners, or the 200,000 PSI nominal rated Pro Series, application specific main bolts with reduced wrenching head and are designed for use in competition applications. Parallel ground, hardened washers are included with each kit.
See More

ARP Auto Racing – ARP Auto Racing For Use With Chevy Gen Iii/Ls Series Small Block/ Gmpp Lsx Block, Hex Head, 234-5608 (Part No.234-5608)

ARP Auto Racing For Use With Chevy Gen Iii/Ls Series Small Block/ Gmpp Lsx Block, Hex Head, 234-5608

from

$354.99
There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel ground washers and high quality nuts. Some applications have provisions for mounting wind age trays and have specially designed standoff studs with serrated lock nuts to position the wind age tray and lock it securely in place. The studs are manufactured from 8740 chrome moly steel, heat treated in-house to 200,000 Pounds Per Square Inch tensile strength, and precision J-form threads rolled after heat treat to create a fastener that has threads 1000 Percent stronger than others.
See More

ARP Auto Racing – "ARP Auto Racing For Use With Chevy Small Block, 13/16"" Socket Size, 2.470"" Under Head L, 234-2501" (Part No.234-2501)

"ARP Auto Racing For Use With Chevy Small Block, 13/16"" Socket Size, 2.470"" Under Head L, 234-2501"

from

$46.99
As the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure that the balancer is locked in position, ARP has developed these ultra strong 200,000 Pounds Per Square Inch bolts that let you exert maximum clamping force. Special features comes with 1/4 Inch thick, wide area washer and an extra tall 12 point head that accepts a deep socket and eliminates the worry of stripping the head.
See More

Top-Quality Standard Piston Rings for 1955 GMC FM340s

Choose a high-quality OEM or aftermarket Standard Piston Ring for GMC FM340s and enjoy top-notch performance from $59.99.

Sealed Power – Sealed Power Engine Piston Ring Set, E-240X (Part No.E-240X)

Sealed Power Engine Piston Ring Set, E-240X

from

$66.99
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.
See More

Sealed Power – Sealed Power Engine Piston Ring Set, E-240X 30 (Part No.E-240X 30)

Sealed Power Engine Piston Ring Set, E-240X 30

from

$59.99
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.
See More

Sealed Power – Sealed Power Engine Piston Ring Set, E-240X 40 (Part No.E-240X 40)

Sealed Power Engine Piston Ring Set, E-240X 40

from

$59.99
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.
See More

FAQs for 1955 GMC FM340 Engine Internals

What are the best-selling Engine Internals for 1955 GMC FM340s?

What’s the price range for 1955 GMC FM340 Engine Internals?

The prices of Engine Internals for the 1955 GMC FM340 range from $39.99 up to $354.99 for the most premium parts.

What is the average price of an Engine Internal for a 1955 GMC FM340?

The average price for Engine Internals for the 1955 GMC FM340 is $116.70. Keep in mind the variety of part types within our Engine Internal 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 Internals for other GMC FM340 model years?

Yes, we carry Engine Internals for 3 model years of GMC FM340s between 1956 and 1959. The following model years are the most popular for Engine Internal purchases: 1959, 1958, 1957, and 1956.

What are the cheapest Engine Internals for my 1955 GMC FM340?

Does Advance Auto Parts sell Engine Internals for any other 1955 GMC models?

Yes. We stock Engine Internals for 24 other popular 1955 GMC models. Some of the most popular are 1955 Truck Engine Internals, 1955 100 Engine Internals, 1955 150 Engine Internals, 1955 250 Engine Internals, and 1955 300 Engine Internals.

What types of Engine Internals do you sell for my 1955 GMC FM340?

As of 8/2/26, these are some of the most in-demand types of Engine Internals for a 1955 GMC FM340:

Can I get help with 1955 GMC FM340 Engine Internal orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Engine Internals and more.

What is your return policy for GMC FM340 Engine Internals?

Advance Auto Parts keeps returns simple. For new GMC FM340 Engine Internals and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.