GMC G25 Engine Internals

Your One-Stop Shop For Trusted GMC G25 Engine Internals

If you’re in search of GMC G25 Engine Internals aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 169 Engine Internals from top brands with prices ranging from $1.29 to $369.99.

Beyond great prices, we stock trusted brands manufacturing all types of Engine Internals for your GMC G25. Of the 8 OEM and aftermarket parts brands we carry, some of the most popular are Sealed Power, National, and Mr. Gasket.

And don’t forget to read customer reviews across all Engine Internals categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Engine Internals have to cost top dollar, and we prove it. Browse our top GMC G25 Engine Internals below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Essential GMC G25 Engine Internals

Spectre – Harmonic Balancer Bolt (Part No.4699)

Harmonic Balancer Bolt

from

$7.99
Spectre’s Harmonic Balancer Bolt Kit is designed to fit Chevrolet Small Block 265-400 V8 engines. This grade 8 bolt is 2-1/2 inches long, and features a plated finish for corrosion resistance. This kit also includes a security lock washer.

Product Features:
  • Fits Chevrolet Small Block 265-400 V8 engines
  • Features a corrosion resistant plated finish
  • Gold iridite finish
  • Grade 8 bolt, 7/16 inch-20 by 2-1/2 inches
  • Includes security lock washer
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Felpro – Engine Crankshaft Seal Kit (Part No.BS 11829-1)

Engine Crankshaft Seal Kit

from

$19.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Application specific design to ensure a perfect fit
  • Meets or exceeds all original equipment specifications
  • Engineered and manufactured specifically for repair applications
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
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Felpro – Engine Crankshaft Seal Kit (Part No.BS 40096-1)

Engine Crankshaft Seal Kit

from

$25.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust

Product Features:
  • Application specific design to ensure a perfect fit
  • Meets or exceeds all original equipment specifications
  • Engineered and manufactured specifically for repair applications
  • Unsurpassed quality you can trust
  • Validated for fit, form, and function
See More

Sealed Power – Engine Piston (Part No.WH423DCP)

Engine Piston

from

$20.49
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:
  • Hypereutectic
  • Made w/exclusive FM425 material for excellent strength & scuff resistance – allows tighter bore and improves sealing for less blow-by
  • Sophisticated “barrel” profiles help optimize oil wedge between skirt and wall.
  • Piston skirts protected by next-gen DUROSHIELD« coating.
  • TAC┐ ring groove geometry
  • Weight matched to +/- 2 grams.
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National – Shaft Repair Sleeve (Part No.99233)

Shaft Repair Sleeve

from

$30.99
National® has built a reputation as one of the most respected names in the industry. We have offered premium sealing solutions for more than 75 years. Our design team keeps pace with the industry and provides advanced solutions for today’s vehicles.

Product Features:
  • Designed to repair damaged, grooved or worn shafts
  • Durable stainless steel construction for corrosion-free sealing surface that surpasses most original shaft specifications
  • Ideal for a shaft where indications of seal wear, such as tracks or grooves have developed
  • Ultra-thin construction (0.01/0.25mm wall thickness) allows original seal size to be used with minimal additional lip loading
  • Easy to install with removable flange and installation tool
  • Installation tool reduces sleeve distortion and allows for installation without removal from the shaft
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Sealed Power – Engine Piston Ring Set (Part No.E-243K 20)

Engine Piston Ring Set

from

$77.99
Sealed Power« Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.

Product Features:
  • Face of top rings are coated with latest generation Plasma-Moly
  • Decreases friction
  • Very resistant to scuffing
  • Exacting tolerances
  • Meets or exceeds OEM specifications
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Sealed Power – Engine Piston Ring Set (Part No.E-243K)

Engine Piston Ring Set

from

$81.99
Sealed Power« Vintage components provide coverage for applications over 35 years old, restoring classics with like new performance. Leading edge materials, ISO & QS certified manufacturing ensures performance and longevity for treasured engine rebuilds.

Product Features:
  • Face of top rings are coated with latest generation Plasma-Moly
  • Decreases friction
  • Very resistant to scuffing
  • Exacting tolerances
  • Meets or exceeds OEM specifications
See More

Sealed Power – Engine Crankshaft Main Bearing Set (Part No.4663M 30)

Engine Crankshaft Main Bearing Set

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.

Product Features:
  • Steel-backed bronze alloy lining with overplate
  • Popular for fatigue resistance & strength – provides conformability required for older applications
  • State-of-the-art manufacturing
  • Exacting tolerances
  • Meets or exceeds OEM specifications
See More

Sealed Power – Main Bearing Set (Part No.140M 20)

Main Bearing Set

from

$100.99
Speed-Pro delivers the power you need and the value and quality that you deserve. Whether you are running at the track, chasing trophies on the strip, or just cruising down the road, count on Speed-Pro to provide the best value in HP engine components

Product Features:
  • A-Series bi-metal aluminum alloy
  • Greater seizure resistance than tri-metal material
  • IROX coating
  • Polymer coating enhances bearing
  • Made with silicon for greater surface hardness
  • Silicon particles help polish crankshaft journal (reduces wear during operation)
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Sealed Power – Engine Piston Set (Part No.8KH423DCP 30)

Engine Piston Set

from

$190.99
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.

Product Features:
  • Hypereutectic
  • Made w/exclusive FM425 material for excellent strength & scuff resistance – allows tighter bore and improves sealing for less blow-by
  • Sophisticated “barrel” profiles help optimize oil wedge between skirt and wall.
  • Piston skirts protected by next-gen DUROSHIELD« coating.
  • TAC┐ ring groove geometry
  • Weight matched to +/- 2 grams.
See More

Sealed Power – Engine Piston (Part No.WH423DCP 40)

Engine Piston

from

$19.49
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:
  • Hypereutectic
  • Made w/exclusive FM425 material for excellent strength & scuff resistance – allows tighter bore and improves sealing for less blow-by
  • Sophisticated “barrel” profiles help optimize oil wedge between skirt and wall.
  • Piston skirts protected by next-gen DUROSHIELD« coating.
  • TAC┐ ring groove geometry
  • Weight matched to +/- 2 grams.
See More

Sealed Power – Engine Piston Wrist Pin (Part No.P-2208)

Engine Piston Wrist Pin

from

$4.99
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.

Product Features:
  • Special alloy steel
  • Use to replace standard pins
  • State-of-the-art manufacturing
  • Exacting tolerances
  • Meets or exceeds OEM specifications
See More

Sealed Power – Engine Connecting Rod Bearing Set (Part No.8-2555A 10X2)

Engine Connecting Rod Bearing Set

from

$74.99
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.

Product Features:
  • Additional oversize OD allows for cost-effective reconditioning
  • A-Series bi-metal aluminum alloy
  • Greater seizure resistance than tri-metal material
  • Dramatically reduces or eliminates bearing wear
  • Made with silicon to provide greater surface hardness
  • Silicon particles help polish crankshaft journal to further reduce wear during operation
See More

Sealed Power – Engine Connecting Rod Bearing Set (Part No.8-2555A 40X2)

Engine Connecting Rod Bearing Set

from

$36.49
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.
See More

Sealed Power – Engine Connecting Rod Bearing Set (Part No.6-2020CP 40)

Engine Connecting Rod Bearing Set

from

$43.49
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:
  • Steel-backed bronze alloy lining with overplate
  • Popular for fatigue resistance & strength
  • Provides conformability required for older apps
  • Our standard material is comparable to competitors performance bearing
  • Note – This material offers less resistance to wear & corrosion than other materials.
  • Utilizes ISO & QS certified manufacturing
See More

Dorman – Connecting Rod Nuts, Type 2, 3/8-24 X 9/16 In., Ford (sold by each) (Part No.635-002)

Connecting Rod Nuts, Type 2, 3/8-24 X 9/16 In., Ford (sold by each)

from

$1.29
This engine connecting rod nut is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

Product Features:
  • Direct replacement – this engine connecting rod nut matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution – this nut is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Mr. Gasket – Woodruff Key (Part No.984G)

Woodruff Key

from

$25.99
The offset cam and crankshaft key helps increase torque and horsepower.

Product Features:
  • Increases low-end torque
  • Increases mid-range horsepower
  • Reduces low-end torque
  • Increases top-end horsepower
See More

Sealed Power – Engine Connecting Rod Bearing (Part No.2555CP 20)

Engine Connecting Rod Bearing

from

$5.99
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.

Product Features:
  • Steel-backed bronze alloy lining with overplate
  • Popular for fatigue resistance & strength
  • Provides conformability required for older apps
  • Our standard material is comparable to competitors performance bearing
  • Note – This material offers less resistance to wear & corrosion than other materials.
  • Utilizes ISO & QS certified manufacturing
See More

Sealed Power – Engine Connecting Rod Bearing (Part No.2555CP 40)

Engine Connecting Rod Bearing

from

$3.99
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 – Engine Connecting Rod Bearing (Part No.2555CA 60)

Engine Connecting Rod Bearing

from

$2.99
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 – Engine Connecting Rod Bearing (Part No.2555CP 1)

Engine Connecting Rod Bearing

from

$5.99
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.

Product Features:
  • Steel-backed bronze alloy lining with overplate
  • Popular for fatigue resistance & strength
  • Provides conformability required for older apps
  • Our standard material is comparable to competitors performance bearing
  • Note – This material offers less resistance to wear & corrosion than other materials.
  • Utilizes ISO & QS certified manufacturing
See More

Sealed Power – Engine Connecting Rod Bearing (Part No.2555A 20)

Engine Connecting Rod Bearing

from

$4.79
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:
  • A-Series bi-metal aluminum alloy
  • Greater seizure resistance than tri-metal material
  • Dramatically reduces or eliminates bearing wear
  • Made with silicon to provide greater surface hardness
  • Silicon particles help polish crankshaft journal to further reduce wear during operation
  • Utilizes ISO & QS certified manufacturing
See More

Sealed Power – Engine Connecting Rod Bearing (Part No.2555A 2)

Engine Connecting Rod Bearing

from

$4.79
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:
  • A-Series bi-metal aluminum alloy
  • Greater seizure resistance than tri-metal material
  • Dramatically reduces or eliminates bearing wear
  • Made with silicon to provide greater surface hardness
  • Silicon particles help polish crankshaft journal to further reduce wear during operation
  • Utilizes ISO & QS certified manufacturing
See More

Sealed Power – Engine Connecting Rod Bearing (Part No.3190A 10)

Engine Connecting Rod Bearing

from

$8.29
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:
  • A-Series bi-metal aluminum alloy
  • Greater seizure resistance than tri-metal material
  • Dramatically reduces or eliminates bearing wear
  • Made with silicon to provide greater surface hardness
  • Silicon particles help polish crankshaft journal to further reduce wear during operation
  • Utilizes ISO & QS certified manufacturing
See More

Sealed Power – Engine Connecting Rod Bearing (Part No.2020CP 10)

Engine Connecting Rod Bearing

from

$6.79
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:
  • Steel-backed bronze alloy lining with overplate
  • Popular for fatigue resistance & strength
  • Provides conformability required for older apps
  • Our standard material is comparable to competitors performance bearing
  • Note – This material offers less resistance to wear & corrosion than other materials.
  • Utilizes ISO & QS certified manufacturing
See More

Engine Internals Brands You Can Trust For Your GMC G25

8 trusted brands of Engine Internals line our shelves, ready to help keep your GMC G25 running smooth. Below are some of the most popular brands and their top Engine Internals offerings:

Popular Felpro Engine Internals

Felpro products for the GMC G25 span several categories. Some of the highest-rated Felpro Engine Internals that will fit your GMC G25 are:
Engine Crankshaft Seal Kit
from $25.99
(1)
Engine Crankshaft Seal Kit
Crankshaft Seals
Engine Crankshaft Seal Kit
from $19.99
(3)
Engine Crankshaft Seal Kit
Crankshaft Seals

Most Purchased GMC G25 Engine Internals from National

When you buy the most frequently purchased National brand Engine Internals, you can be confident it will be the right part for your GMC G25. Here are the National Engine Internals Advanced Auto customers buy the most:
Multi Purpose Seal
from $12.99
(15)
Multi Purpose Seal
Crankshaft Seals
Ultra Seal; Harmonic Balancer Bolt/Washer Kit
from $12.99
(12)
Ultra Seal; Harmonic Balancer Bolt/Washer Kit
Crankshaft Bolts
Engine Connecting Rod Bearing Set
from $76.99
(4)
Engine Connecting Rod Bearing Set
Standard Rod Bearing Sets

FAQs for GMC G25 Engine Internals

What are the most purchased Engine Internals for the GMC G25?

Out of 169 Engine Internals for the GMC G25, the most popular in our inventory are:
Multi Purpose Seal
from $12.99
(15)
Multi Purpose Seal
Crankshaft Seals
Ultra Seal; Harmonic Balancer Bolt/Washer Kit
from $12.99
(12)
Ultra Seal; Harmonic Balancer Bolt/Washer Kit
Crankshaft Bolts
Engine Connecting Rod Bearing
from $8.49
(1)
Engine Connecting Rod Bearing
Standard Individual Rod Bearings

What are the top-rated GMC G25 Engine Internals?

Top-rated Engine Internals for your GMC G25 based on customer reviews/ratings are:
Oil Seal
from $7.29
(2)
Oil Seal
“easy TO INSTALL, WORKS PERFECT, EXCELLENT PRICE”
Engine Piston Ring Set
from $84.99
(2)
Engine Piston Ring Set
“Good stock replacement parts”
Engine Connecting Rod Bearing
from $7.29
(1)
Engine Connecting Rod Bearing
“great price and fit good”