1981 GMC C2500 Engine Internals
More 1981 GMC C2500 Engine Internals
Find your specific 1981 GMC C2500 original or aftermarket Engine Internals below. Order your parts online and have delivered to your home or pick up in-store at Advance Auto.
Essential 1981 GMC C2500 Engine Internals
Felpro – Engine Crankshaft Repair Sleeve Tool (Part No.16316)
from
$42.99
Fel-Pro gaskets offer 100% vehicle sealing with application-specific materials to give you sealing solutions with the performance and durability professionals trust
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Product Features:
- Meets or exceeds all original equipment specifications
- Application specific design to ensure a perfect fit
- Engineered and manufactured specifically for the repair environment
- Unsurpassed quality you can trust
- Validated for fit, form, and function
National – Shaft Repair Sleeve (Part No.99435)
from
$55.99
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.
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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
Mr. Gasket – Ultra Seal; Harmonic Balancer Bolt/Washer Kit (Part No.7845)
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$25.99
The grade 8 bolts feature high hex head to prevent socket slippage. The thick parallel ground washer allows accurate uniform torque. Black finished, complete with split lock washer to prevent loosening.
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Product Features:
- This bolt set has a black oxide finish
- Tall hex head bolt to prevent slippage
- Extra thick parallel ground washer
- Washers provides more accurate and uniform torque
- Grade 8 alloy steel
ARP Auto Racing – For Use With Chevy Small Block, 5/8" Socket Size, 3/4" – 16 Thread Size (Part No.134-2501)
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$36.49
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.
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Product Features:
- Ultra Strong Bolt Rated At 200,000 PSI
- 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
- Delivers ARP Quality And Reliability
- Made In USA
- 12-Point Head
- Sold Individually
- 200,000 PSI
- 2.470″ Underhead Length
Mr. Gasket – Woodruff Key (Part No.984G)
from
$25.99
The offset cam and crankshaft key helps increase torque and horsepower.
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Product Features:
- Increases low-end torque
- Increases mid-range horsepower
- Reduces low-end torque
- Increases top-end horsepower
Sealed Power – Engine Piston (Part No.2773PNA)
from
$118.99
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:
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Product Features:
- Cast with FM132 Eutectic proprietary alloy
- Performance & dependability of original equipment pistons
- High quality aluminum
- Utilizes ISO & QS certified manufacturing
- Meets or exceeds OEM specifications
Sealed Power – Engine Piston (Part No.W454NP)
from
$23.99
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:
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Product Features:
- Cast with FM132 Eutectic proprietary alloy
- Performance & dependability of original equipment pistons
- High quality aluminum
- Utilizes ISO & QS certified manufacturing
- Meets or exceeds OEM specifications
Sealed Power – Engine Piston Ring Set (Part No.E-553K 40)
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$125.99
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.
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Product Features:
- Face of top rings coated with latest generation Plasma-Moly
- Decreases friction
- Very resistant to scuffing
- Exacting tolerances
- Meets or exceeds OEM specifications
Sealed Power – Engine Piston Ring Set (Part No.E-234X 30)
from
$50.99
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:
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Product Features:
- Unsurpassed quality that you can trust
- Uses leading edge materials
- State-of-the-art manufacturing
- Exacting tolerances
- Meets or exceeds OEM specifications
Sealed Power – Engine Piston (Part No.WH423DCP 40)
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.
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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.
Sealed Power – Engine Piston (Part No.WH640DCP)
from
$18.49
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:
- 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.
Dorman – Connecting Rod Nuts, Type 2, 3/8-24 X 9/16 In., Ford (sold by each) (Part No.635-002)
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.
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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
Sealed Power – Engine Connecting Rod Bearing (Part No.2555A 10)
from
$5.29
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:
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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
Sealed Power – Engine Connecting Rod Bearing (Part No.2555A 30)
from
$7.29
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:
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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
Sealed Power – Engine Piston Wrist Pin (Part No.P-2208)
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:
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Product Features:
- Special alloy steel
- Use to replace standard pins
- State-of-the-art manufacturing
- Exacting tolerances
- Meets or exceeds OEM specifications
Sealed Power – Engine Piston Set (Part No.8KH423DCP 30)
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:
See More
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.
National – Multi Purpose Seal (Part No.710891)
from
$21.79
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:
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Product Features:
- Low swell in hydrocarbon fluids
- Design type: spring loaded; multi-lip
- Provides good low temperature capability
- Temperature range: -40°F to 225°F; -40°C to 107°C
- Delivers quality and reliable performance for every type of repair
Mahle – Crankshaft Seal (Part No.A8060202299MAH)
from
$37.03
Crankshaft Seal
National – Multi Purpose Seal (Part No.5512)
from
$34.99
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:
See More
Product Features:
- Low swell in hydrocarbon fluids
- Design type: spring loaded; multi-lip
- Provides good low temperature capability
- Temperature range: -40°F to 225°F; -40°C to 107°C
- Delivers quality and reliable performance for every type of repair
National – Multi Purpose Seal (Part No.710258)
from
$34.49
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:
See More
Product Features:
- Low swell in hydrocarbon fluids
- Design type: spring loaded; multi-lip
- Provides good low temperature capability
- Temperature range: -40°F to 225°F; -40°C to 107°C
- Delivers quality and reliable performance for every type of repair
Sealed Power – Engine Connecting Rod Bearing Set (Part No.8-3190A 1)
from
$42.49
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:
- 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
Sealed Power – Connecting Rod Bearing Set (Part No.8-7100CH 10)
from
$76.99
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:
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Product Features:
- Steel-backed Babbitt lining material
- For use in automotive and high-performance applications
- Babbitt designed to deform under extreme loads without damaging other engine parts
- Meets unique demands of performance engines
- Delivers dependable performance and superior service life
- Application-specific design for perfect fit and correct operation
Sealed Power – Engine Connecting Rod Bearing Set (Part No.6-1020A 50X2)
from
$44.99
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:
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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
Sealed Power – Engine Connecting Rod Bearing Set (Part No.6-2020CP 10)
from
$45.99
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:
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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
Sealed Power – Main Bearing Set (Part No.140M 20)
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:
See More
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)
Sealed Power – Main Bearing Set (Part No.140M 10)
from
$104.99
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:
See More
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)
Sealed Power – Engine Crankshaft Main Bearing Set (Part No.5085MA 20)
from
$89.99
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:
See More
Product Features:
- A-Series bi-metal aluminum alloy
- Greater seizure resistance than tri-metal material
- Reduces dramatically or eliminates bearing wear
- Exacting tolerances
- Meets or exceeds OEM specifications
- Made with silicon to provide greater surface hardness
Sealed Power – Engine Crankshaft Main Bearing Set (Part No.4400MA 20)
from
$77.99
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:
See More
Product Features:
- A-Series bi-metal aluminum alloy
- Greater seizure resistance than tri-metal material
- Reduces dramatically or eliminates bearing wear
- Exacting tolerances
- Meets or exceeds OEM specifications
- Made with silicon to provide greater surface hardness
Popular 1981 GMC C2500 Engine Internals Categories
1981 GMC C2500 Engine Internals
Maybe you’re in the middle of a full rebuild of that 1981 GMC C2500. Maybe you just need a couple of Engine Internals. Either way, Advance Auto Parts has 152 different Engine Internals in our inventory ranging from $1.29 to $369.99. That means you can find the exact parts or products you need to keep that 1981 GMC C2500 running smoothly.
Engine Internals are only as good as their brand. We stock 8 different brands to make sure you have plenty of trusted parts to choose from for your 1981 GMC C2500. Sealed Power, National, and Mr. Gasket are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!
We know you’ll find the perfect Engine Internals for your 1981 GMC C2500, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 199 reviews in this category, some of the top rated parts include Oil Seal with 4.0 stars and Engine Piston Ring Set with 2.0 stars.
So if you’re in the market for aftermarket Engine Internals to keep your 1981 GMC C2500 rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!
Engine Internals Brands To Make Your 1981 GMC C2500 Last
Simple repair, complete replacement, or a full rebuild. No matter the job, your 1981 GMC C2500 demands trusted brand parts and products to keep it running. Many trusted brands of Engine Internals make up Advance Auto Parts’ inventory, and all are ready to help make your C2500 the best it can be. Be sure to browse some of our top Engine Internals brands and parts.
Popular Felpro Engine Internals
We carry Felpro parts in our stock across Crankshaft Seals categories, plus more. For a 1981 GMC C2500, our most popular Felpro Engine Internals include:
Top 1981 GMC C2500 Engine Internals from Sealed Power
Sealed Power products are another trusted brand when it comes to Engine Internals for your 1981 GMC C2500. Popular Sealed Power parts include:
FAQs for 1981 GMC C2500 Engine Internals
What are the most purchased Engine Internals for the 1981 GMC C2500?
Out of 152 Engine Internals for the 1981 GMC C2500, the most popular in our inventory are:
What are the top-rated 1981 GMC C2500 Engine Internals?
Top-rated Engine Internals for your 1981 GMC C2500 based on customer reviews/ratings are:
