GMC 1500 Series Engine Internals

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:

• Design type: spring loaded; multi-lip
• Temperature range: -40 Deg. F to 400 Deg. F / -40 Deg. C to 204 Deg. C
• Excellent high temperature capabilities
• Compatible with wide range of fluids
• Delivers quality and reliable performance for every type of repair

Value-priced seal meets all cataloged application requirements.

Product Features:

• Brand may vary by location

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

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:

• 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« 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

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

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.

Product Features:

• Kit Come Complete With Hardened Parallel Ground Washers And High Quality Nuts
• Manufactured From 8740 Chrome Moly Steel
• Heat Treated To 200,000 Pounds Per Square Inch
• Precision J-Form Threads Rolled After Heat Treat To Create A Fastener That Has Threads 1000 Percent Stronger Than Others
• 200,000 PSI
• Sold As A Kit

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.

Product Features:

• Forged From Premium Grade 8740 Chrome Moly Steel
• Generous Under Head Radius And Rolled Threads For The Utmost Reliability
• 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
• Parallel Ground, Hardened Washers Are Included With Each Kit
• Large Journal
• Sold As A Kit
• 180,000 PSI

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:

• 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

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:

• 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

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:

• 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« 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:

• 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® 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:

• Helps improve cylinder sealing for less blow-by
• Retains standard ring gaps in top groove
• DUROSHIELD« skirt-coated piston
• Moly-graphite coating extends engine life
• Reduces friction for higher fuel economy
• Prevents damage from inadequate lubrication on start-up

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

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:

• 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« 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:

• Cast with FM132 Eutectic proprietary alloy
• Performance & dependability of original equipment pistons
• High quality aluminum
• Controlled casting & machining provides reliability, durability & long life
• Up-tilt ring grooves improve piston to ring sealing
• Provides great blow-by control

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:

• Cast with FM132 Eutectic proprietary alloy
• Performance & dependability of original equipment pistons
• High quality aluminum
• Controlled casting & machining provides reliability, durability & long life
• Up-tilt ring grooves improve piston to ring sealing
• Provides great blow-by control

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

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:

• Unsurpassed quality that you can trust
• Uses leading edge materials
• State-of-the-art manufacturing
• Exacting tolerances
• Meets or exceeds OEM specifications

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

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

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:

• 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« 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:

• 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« 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:

• Unsurpassed quality that you can trust
• Uses leading edge materials
• State-of-the-art manufacturing
• Exacting tolerances
• Meets or exceeds OEM specifications

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:

• Unsurpassed quality that you can trust
• Uses leading edge materials
• State-of-the-art manufacturing
• Exacting tolerances
• Meets or exceeds OEM specifications