2021 GMC Sierra 3500 HD Exhaust Parts

This exhaust manifold to cylinder head repair clamp is designed to match the fit and function of the original clamp on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

• Saves time – When an exhaust manifold fastener breaks, this exhaust manifold repair clamp saves time by creating a seal without needing to extract the broken stud
• Location-specific – engineered to fit the exhaust manifold on specified GM and Isuzu vehicles on the front right on vehicles without EGR valve, or rear left
• Complete kit – includes clamp and fasteners for a thorough, secure repair
• Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

This exhaust manifold hardware kit matches the original hardware required to secure the exhaust manifold to the engine on specified vehicles, and is made from quality materials for reliable performance.

Product Features:

• Upgraded hardware – this set of twelve M8-1.25 x 30mm exhaust manifold mounting bolts are 100 percent stainless steel for superior heat and corrosion resistance
• Convenient solution – kit contains all the application-specific hardware necessary to install one exhaust manifold
• Matches fit – this hardware matches the fit and function of the factory fasteners, while offering superior durability
• Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

This exhaust manifold to cylinder head repair clamp is designed to match the fit and function of the original clamp on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

• Saves time – When an exhaust manifold fastener breaks, this exhaust manifold repair clamp saves time by creating a seal without needing to extract the broken stud
• Location-specific – engineered to fit the exhaust manifold center on specified GM and Hummer vehicles
• Complete kit – includes clamp and fasteners for a thorough, secure repair
• Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

This exhaust manifold hardware kit matches the original hardware required to secure the exhaust manifold to the engine on specified vehicles, and is made from quality materials for reliable performance.

Product Features:

• Direct replacement – this exhaust manifold hardware kit matches the original hardware required to secure the exhaust manifold to the engine on specified vehicles
• Ideal solution – this kit is a reliable replacement for the original hardware that is missing or damaged, or has failed
• Durable construction – this kit is made from quality components to ensure reliable performance and a long service life
• Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

This exhaust manifold to cylinder head repair clamp is designed to match the fit and function of the original clamp on specified vehicles, and is engineered for durability and reliable performance.

Product Features:

• Saves time – When an exhaust manifold fastener breaks, this exhaust manifold repair clamp saves time by creating a seal without needing to extract the broken stud
• Location-specific – engineered to fit the exhaust manifold on the front left or rear right on specified GM and Isuzu vehicles
• Complete kit – includes clamp and fasteners for a thorough, secure repair
• Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience

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:

• Designed and manufactured to meet the needs of the exhaust system repair environment.
• Verified, tested and certified proprietary Organic coating resists corrosion.
• Tightly controlled coefficient of friction ensures reliable installation.
• Application specific kit contents
• Self-locking nuts (where applicable).

Interested in a new exhaust system? Check out the ATLAS DPF-Back exhaust system by aFe. This system is constructed from 5 in. mandrel-bent aluminized steel tubing. Smooth transition bends allow for low turbulence, increasing horsepower, toque and lowering EGTs. Uses high quality band clamps and OE-style bayonet hangers. This unit uses all factory mounting locations to provide a quick, hassle-free installation. Also included in this exhaust system is a massive 7 in. wrinkle-black powder-coated tip with a laser-cut stainless steel aFe power badge. Tip features a drain port on the bottom to keep rust and corrosion away. ATLAS exhaust systems are the perfect combination of performance, fit and value. High quality OE-style flange and band clamps are used for a complete 360 degree sealing surface. All aFe systems are engineered and manufactured in our Corona, California manufacturing facility.

Product Features:

• 5 in. Aluminized Steel Tubing
• 7 in. Wrinkle Black Powder Coated Tip w/Laser Cut Age Badge
• OE Style Flanges
• High Quality Band Clamps

Engineered to perform in the most extreme environments. Constructed from mandrel bent 4 in. 409 stainless steel tubing for maximum flow; increased horsepower; increased torque and lower EGTS. All systems use factory mounting locations providing stability and hassle free installation. High quality OE style flange and band clamps are used for a complete 360 deg. sealing surface. A free flowing 24 in. long muffler is used to absorb high pitch tones producing a powerful sound and unleashing all available horsepower and torque out of your rig. OE style bayonet hangers are used to maintain a stable pipe locations during high vibration and high heat conditions. The bayonet tip holds the hanger bushing in place for an OE style fit that does not change with time.

Product Features:

• 4 in. Mandrel Bent 409 Stainless Steel Tubing
• DPF/CAT-Delete
• No Bungs
• Includes Flange

Simple Installation: All systems use factory mounting locations providing stability and hassle-free installation. Leak-Free Seal: High quality band clamps are included for a complete 360 degree sealing surface. OE Fit: OE-style bayonet hangers are used to maintain a stable pipe location during high vibration and high heat conditions. The bayonet tip holds the hanger bushing in place for an OE-style fit that does not change with time. Flow and Performance This exhaust system is constructed of 4″ mandrel-bent stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT’s. 5″ Diameter Polished Intercooled Tips: Finishing off the exhaust are 5″ diameter, polished, stainless steel straight cut tips with intercooling vents designed to reduce exhaust gas temperatures at the tailpipe. A unique stainless steel laser-cut aFe Power logo plate is riveted on for an aggressive style. **Cutting stock exhaust is required.

Product Features:

• Mandrel Bent Stainless Steel Tubing
• High Quality Band Clamp
• OE Style Bayonet Hangers For Secure Fitment
• Factory Mounting Locations For A Quick Hassle Free Installation

Designed to provide maximum performance and maximum value our Performance Series features 100 Percent aluminized steel at a no nonsense price. These systems are designed to provide the MBRP performance and sound you have grown to love to those who are operating on a tight budget. Featuring a two piece tail pipe and bolt-on hangers these systems fit and perform just like our more expensive series at a price point that cannot be beaten. A performance exhaust system is much like a musical instrument. Quality engineering is important, hundreds of test Miles and hundreds of Hours are invested into every system to guarantee you the greatest sound. Durability and performance available from any exhaust system anywhere.

Product Features:

• The Lowest Bend Degree Angles And Smooth Mandrel Bends Mean That Exhaust Gases Have An Easier Path To The Tip, Move Faster And Reduce Exhaust Gas Temperatures
• Vehicle Maintains Optimal Operating Temperatures
• Fits Right The First Time. Rigorous Testing Procedures Ensure That Every Component Will Fit As Expected
• Each Kit Is Designed To Fit As Many Configurations Of The Same Vehicle As Possible
• 100 Percent Aluminized Steel
• Features A Two Piece Tail Pipe And Bolt-On Hangers
• Easy, Bolt-On Design, Makes Easy To Install

Engineered to perform in the most extreme environments. Constructed from mandrel bent 4 in. 409 stainless steel tubing for maximum flow; increased horsepower; increased torque and lower EGTS. All systems use factory mounting locations providing stability and hassle free installation. High quality OE style flange and band clamps are used for a complete 360 deg. sealing surface. A free flowing 24 in. long muffler is used to absorb high pitch tones producing a powerful sound and unleashing all available horsepower and torque out of your rig. OE style bayonet hangers are used to maintain a stable pipe locations during high vibration and high heat conditions. The bayonet tip holds the hanger bushing in place for an OE style fit that does not change with time.

Product Features:

• 5 in. 409 Stainless Steel Tubing
• 7 in. Polished Tips w/Laser Cut Age Badge
• Increased Flow And Performance
• High Quality Band Clamps

Interested in a new exhaust system for your LML Duramax? Check out the ATLAS DPF-Back exhaust system by aFe. This system is constructed from 5″ mandrel-bent aluminized steel tubing and uses high quality band clamps and OE-style bayonet hangers. This unit uses all factory mounting locations to provide a quick, hassle-free installation. Also included in this exhaust system is a massive 6″ diameter, wrinkle-black powder-coated 304 stainless steel tip with a laser-cut stainless steel aFe power badge. ATLAS exhaust systems are the perfect combination of performance, fit and value. Simple Installation: All systems use factory mounting locations providing stability and hassle-free installation. Leak-Free Seal: High quality band clamps are included for a complete 360 degree sealing surface. OE Fit: OE-style bayonet hangers are used to maintain a stable pipe location during high vibration and high heat conditions. The bayonet tip holds the hanger bushing in place for an OE-style fit that does not change with time. Flow and Performance: This ATLAS exhaust system is constructed of 5″ mandrel-bent aluminized steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT’s. 6″ Diameter Black Intercooled Tip: Finishing off the exhaust is a 6″ diameter, black, stainless steel slash cut tip with intercooling vents designed to reduce exhaust gas temperatures at the tailpipe. A unique stainless steel laser-cut aFe Power logo plate is riveted on for an aggressive style.

Product Features:

• Mandrel Bent Tubing For Maximum Flow
• Utilizes Factory Mounting Locations
• Quick Hassle Free Installation
• Massive Intercooled Tip w/Laser Cut aFe Power Badge

Designed to provide maximum performance and maximum value our Performance Series features 100 Percent aluminized steel at a no nonsense price. These systems are designed to provide the MBRP performance and sound you have grown to love to those who are operating on a tight budget. Featuring a two piece tail pipe and bolt-on hangers these systems fit and perform just like our more expensive series at a price point that cannot be beaten. A performance exhaust system is much like a musical instrument. Quality engineering is important, hundreds of test Miles and hundreds of Hours are invested into every system to guarantee you the greatest sound. Durability and performance available from any exhaust system anywhere.

Product Features:

• The Lowest Bend Degree Angles And Smooth Mandrel Bends Mean That Exhaust Gases Have An Easier Path To The Tip, Move Faster And Reduce Exhaust Gas Temperatures
• Vehicle Maintains Optimal Operating Temperatures
• Fits Right The First Time. Rigorous Testing Procedures Ensure That Every Component Will Fit As Expected
• Each Kit Is Designed To Fit As Many Configurations Of The Same Vehicle As Possible
• 100 Percent Aluminized Steel
• Features A Two Piece Tail Pipe And Bolt-On Hangers
• Easy, Bolt-On Design, Makes Easy To Install

This exhaust manifold hardware kit matches the original hardware required to secure the exhaust manifold to the engine on specified vehicles, and is made from quality materials for reliable performance.

Product Features:

• Direct replacement – this exhaust manifold hardware kit matches the original hardware required to secure the exhaust manifold to the engine on specified vehicles
• Ideal solution – this kit is a reliable replacement for the original hardware that is missing or damaged, or has failed
• Durable construction – this kit is made from quality components to ensure reliable performance and a long service life
• Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience

Headlock&trade: Bolts eliminate the need for lock washers, Period. That’s because each Headlock&trade: Bolt features 24 equally-spaced, stainless steel teeth serrations that bite into and hold onto the attaching surface-eliminating the need for lock-washers.

Product Features:

• 12 per Package
• Includes Ball Head Socket Tool – to Start Header Bolt Into Head
• 410 stainless steel
• Minimum 180,000 PSI tensile strength
• 24 equally spaced clockwise teeth

ARP manufactures a variety of premium grade bolt and stud kits to facilitate installation of exhaust headers including the popular stainless stud kit with 12 point nuts. The Stainless 300 material is not affected by corrosion or extreme heat, making it ideal for the application.

Product Features:

• Material Is Not Affected By Corrosion Or Extreme Heat
• The Compact 12-Point Nut Lets You Easily Slip A Socket Close To The Pipe
• Substantially Stronger Than Grade 8 Hardware
• Nominally Rated At 170,000 PSI Tensile Strength
• Set of 12
• 3/8” Wide Header Flange
• 1.181? Underhead Length

Black oxide finished carbon steel header bolts have a compact hex head and the flange is ideal for use where space is minimal – your typical header flange. Includes twelve (12) M8 – 1.25 x 25mm header bolts.

Product Features:

• 12 per Package
• Fits GM LS Series Engines
• Black Oxide Finish Resists Corrosion

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:

• Meets or exceeds all original equipment specifications
• Application specific design to ensure a perfect fit
• Engineered for the sealing repair environment
• Unsurpassed quality you can trust
• Validated for fit, form, and function

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:

• Meets or exceeds all original equipment specifications
• Application specific design to ensure a perfect fit
• Engineered for the sealing repair environment
• Unsurpassed quality you can trust
• Validated for fit, form, and function

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:

• Meets or exceeds all original equipment specifications
• Application specific design to ensure a perfect fit
• Engineered for the sealing repair environment
• Unsurpassed quality you can trust
• Validated for fit, form, and function

Damaged exhaust gaskets causing an exhaust leak? This exhaust flange gasket seals the exhaust system where two components are joined by a flange. This direct-replacement gasket matches the original design for a perfect fit.

Product Features:

• Direct replacement – this exhaust flange gasket matches the original gasket for a perfect fit
• Complete repair solution – this flange gasket should be replaced any time service is performed on any of the related exhaust components
• Excellent value – original equipment quality at a competitive price
• Quality tested – This gasket has undergone material testing to meet product standards and quality

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:

• Meets or exceeds all original equipment specifications
• Application specific design to ensure a perfect fit
• Engineered for the sealing repair environment
• Unsurpassed quality you can trust
• Validated for fit, form, and function

With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

Product Features:

• Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.

MAHLE gaskets provide world class sealing products trusted by OEMs & Technicians around the globe.

Product Features:

• All MAHLE gaskets meet or exceed the original equipment specifications providing the finest sealing products available
• MAHLE gaskets utilizes OE equivalent or better materials in all our gaskets
• Exhaust pipe gaskets from MAHLE Original are manufactured with the best materials to withstand high temperature applications.
• The contents of MAHLE gaskets are packaged in shrink wrapped tray, giving you the added security of knowing that you have the right parts, prior to opening the package

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:

• Meets or exceeds all original equipment specifications
• Application specific design to ensure a perfect fit
• Engineered for the sealing repair environment
• Unsurpassed quality you can trust
• Validated for fit, form, and function

Complete your exhaust repair with Walker┬« gaskets and flanges. Available in a variety of styles and sizes, they’re designed to work with OE exhaust components and Walker aftermarket replacement parts.

Product Features:

• AVAILABLE IN DIFFERENT SIZES — Offered in a variety of styles and sizesfora quality vehicle repair
• HEAT RESISTANT — Designed to resist heat for long-lasting performance
• PREMIUM MATERIALS — Made from high-quality materials for durability and long life
• ENGINEERING EXPERTISE — Parts are reviewed and validated and approved by Walker engineers through rigorous research and development
• REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
• EASIER TO INSTALL — Featuring slotted bolt holes (where applicable) for easy installation, gasket slips into place
• BETTER TOGETHER — Use premium Walker-½ accessories when installing Walker catalytic converters and mufflers for a complete exhaust system upgrade

Complete your exhaust repair with Walker┬« gaskets and flanges. Available in a variety of styles and sizes, they’re designed to work with OE exhaust components and Walker aftermarket replacement parts.

Product Features:

• AVAILABLE IN DIFFERENT SIZES — Offered in a variety of styles and sizesfora quality vehicle repair
• HEAT RESISTANT — Designed to resist heat for long-lasting performance
• PREMIUM MATERIALS — Made from high-quality materials for durability and long life
• ENGINEERING EXPERTISE — Parts are reviewed and validated and approved by Walker engineers through rigorous research and development
• REAL-WORLD TESTED — Parts are tested on-vehicle and validated to ensure optimal performance on the road
• EASIER TO INSTALL — Featuring slotted bolt holes (where applicable) for easy installation, gasket slips into place
• BETTER TOGETHER — Use premium Walker-½ accessories when installing Walker catalytic converters and mufflers for a complete exhaust system upgrade

With Victor Reinz gaskets, you can be sure you are getting sealing solutions that deliver OE quality gasket technology and engineering. That is because Victor Reinz is an original equipment supplier and the trusted choice of manufacturers the world over, offering broad coverage for foreign and domestic cars and trucks. In Victor Reinz gasket sets, you get the right combination of components needed for fast, long-lasting repairs.

Product Features:

• Choosing Victor Reinz assures getting OE quality parts in gaskets sets that have the coverage, contents, packaging and electronic cataloging to best meet the needs of the aftermarket.