from

$278.99

The 50 Series Big Block muffler is made for more than just big cubic inch engine applications. Its large case size with internal tuning chamber provides mileage and power gains along with maximum sound control for a quiet interior tone, even under heavy loads. Well suited to heavy duty vehicles such as full size trucks, SUV’s, RVs, and tow vehicles. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.

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$185.99

Dynomax® Performance Exhaust, a leading performance exhaust brand built on over 20 years of market leadership. Each and every Dynomax® product is backed by engineers who know what you want and expect out of a performance exhaust product.

Product Features:

Mandrel bends improve flow capacity over traditional bends
Combine state-of-the-art engineering with quality material to provide exceptional strength and durability
Dynomax® premium pre-bent pipe is manufactured with precision benders, and then fixture checked, insuring every part is a perfect fit, providing quick and easy installation.
Pipe diameters are increased from OEM sizes to improve flow and increase power

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$41.49

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

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$114.99

This exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the original manifold on specified vehicles. It includes all necessary gaskets and downpipe hardware for a complete repair.

Product Features:

Ideal replacement – this exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the stock manifold on specified vehicles
Reliable construction – durable materials resist warping, cracking and leaking for long-lasting performance
Complete repair – includes all necessary gaskets and downpipe hardware
Trustworthy design – built by industry leader in aftermarket manifolds

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$1126.99

Designed, tested and validated for assured compliance to meet CARB standards, Walker® CalCat® Direct-Fit Catalytic Converters are available for OBDII (1996 and newer) and non-OBD (1995 and older) vehicles and delivers a precise OE-style fit.

Product Features:

CARB COMPLIANT — For use on OBDII vehicles, 1996 and newer and non-OBD 1995 and older. Legal for sale in CA, CO, NY & other states requiring CARB-compliant replacement converters. Consult your state’s aftermarket converter regulations.
DIRECT-FIT DESIGN — Direct-fit bolt-on replacement solution with OE-style hangers, brackets, routings and heat shields for easy installation that doesn’t require specialized fabrication or welding
SUPERIOR TECHNOLOGY — Optimal high technology washcoat formulated to deliver superior performance (as compared to EPA-compliant converters)
CONSISTENT PERFORMANCE — Utilizes a precise OE-style coating process to apply catalyst material to the substrate, providing consistent performance for assured emissions compliance
STRONG AND DURABLE — Features thick OE-style flanges, hangers and brackets for strength and stainless-steel body with aluminized pipe and heat shields for durability
BUY WITH CONFIDENCE — Backed by Walker’s 50,000-mile/80,000-kilometer emissions and structural integrity warranty

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$2201.99

Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4451419. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow’s state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This direct-fit catalytic converter is designed to fit the 1999-2003 Chevrolet Silverado 1500, 1999-2003 GMC Sierra 1500, and additional vehicles. The included gaskets & hardware reduce the possibility of a leaking seal while avoiding the need to reuse corroded factory parts for installation. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Product Features:

Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency.
Simplifies installation with essential gaskets and hardware being included in the box.
Your trusted source for CARB-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last.

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$126.99

Made from quality materials for durability, DynoMax® pipe is manufactured with precision benders and fixture checked to ensure a precise fit for quick and easy installation.

Product Features:

IMPROVED FLOW CAPACITY — Mandrel bends (where applicable) improve flow capacity over traditional bends while increased pipe diameter from OE sizes increases flow and power
DESIGNED TO PERFORM — Fixture checked to ensure a precise fit for quick and easy installation
AVAILABLE IN DIFFERENT SIZES — Offered in a variety of styles and sizes for a quality vehicle repair
PREMIUM MATERIALS – Made from aluminized steel for durability and long life
BETTER TOGETHER — Use premium DynoMax® accessories when installing DynoMax mufflers and exhaust systems for a complete performance exhaust system upgrade

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$143.99

Made from aluminized steel for durability, Walker® premium pipe is manufactured with precision benders and fixture checked to ensure a precise fit for quick and easy installation.

Product Features:

RESISTS CORROSION — Durable aluminized steel construction for corrosion resistance and performance
EASY TO INSTALL — Manufactured with precision bends and OE-style routings, hangers and connectors for easy installation (where applicable)
OE-STYLE PERFORMANCE — Direct-fit design is fixture checked to ensure a precise fit that performs like original equipment
BETTER TOGETHER — Use premium Walker accessories when installing Walker catalytic converters and mufflers for a complete exhaust system upgrade
AVAILABLE IN DIFFERENT SIZES — Offered in a variety of lengths and diameters and features the appropriate Inlet Diameter (I.D.) – Outlet Diameter (O.D.) connection; see product specifications for more information

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$17.29

Our exhaust manifold flange kit includes all necessary studs and nuts for a complete repair.

Product Features:

Direct replacement for a proper fit every time
Durable steel construction
New hardware helps fix exhaust leaks
Also available in the Exhaust Manifold Hardware Kit

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$26.99

This exhaust flange stud and nut are designed to match the fit and function of the original hardware on specified vehicles. Made of quality materials, this hardware is engineered for reliable performance.

Product Features:

Upgraded hardware – this set of six M10-1.5 exhaust manifold mounting studs and nuts are 100 percent stainless steel for superior heat and corrosion resistance
Convenient solution – kit contains all the application-specific hardware necessary to join one exhaust manifold to one manifold flange
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

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$25.75

Exhaust Manifold Gas

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$17.79

Exh. Manifold Gasket

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$32.09

Exhaust Bolt

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$26.99

Complete your exhaust repair with a Walker® MEGA preformed band clamp. Designed to ensure a tight connection and inhibit leaks, Walker hardware is manufactured from durable and robust material for long service life.

Product Features:

SUPERIOR SEAL — Provides superior 360° clamping and sealing on muffler inlets, outlets, elbow joints and pipe
AVAILABLE IN DIFFERENT SIZES — Offered in a variety of styles and sizes for your vehicle repair needs
PREMIUM MATERIALS – Made from a variety of materials including low-carbon steel or stainless steel for durability and long life
BETTER TOGETHER — Use Walker® accessories when installing Walker catalytic converters and mufflers for a complete exhaust system upgrade

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$10.29

Complete your exhaust repair with an Exhaust Mate® U-bolt clamp. Designed to ensure a tight, leak-resistant connection, Exhaust Mate hardware is manufactured from durable and robust material for long service life.

Product Features:

CONNECTS EXHAUST PARTS — Provides secure, leak-resistant connection
AVAILABLE IN DIFFERENT SIZES — Offered in a variety of styles and sizes for a quality vehicle repair
PREMIUM MATERIALS – Made from quality material for durability and long life
BETTER TOGETHER — Use Walker® accessories when installing catalytic converters and mufflers for a complete exhaust system upgrade

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$6.79

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

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$5.29

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

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$7.79

Complete your exhaust repair with Walker® insulators. Available in a variety of styles and sizes, they’re designed to work with Walker aftermarket replacement parts for quick and easy installation.

Product Features:

OE DESIGN — Designed with OE-style features for easy installation and fit
PREMIUM MATERIALS — Made from high-quality materials for durability and long life
AVAILABLE IN DIFFERENT SIZES — Offered in a variety of styles and sizes for a quality vehicle repair
KEEPS EXHAUST PARTS IN PLACE — Designed to support undercar exhaust components
BETTER TOGETHER — Use premium Walker accessories when installing Walker catalytic converters and mufflers for a complete exhaust system upgrade

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$174.99

Made from aluminized steel for durability, Walker® premium pipe is manufactured with precision benders and fixture checked to ensure a precise fit for quick and easy installation.

Product Features:

RESISTS CORROSION — Durable aluminized steel construction for corrosion resistance and performance
EASY TO INSTALL — Manufactured with precision bends and OE-style routings, hangers and connectors for easy installation (where applicable)
OE-STYLE PERFORMANCE — Direct-fit design is fixture checked to ensure a precise fit that performs like original equipment
BETTER TOGETHER — Use premium Walker accessories when installing Walker catalytic converters and mufflers for a complete exhaust system upgrade
AVAILABLE IN DIFFERENT SIZES — Offered in a variety of lengths and diameters and features the appropriate Inlet Diameter (I.D.) – Outlet Diameter (O.D.) connection; see product specifications for more information
COMPATIBILITY — Ideal for weld or clamp installations

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$46.99

Customize your exhaust system with a DynoMax® stainless steel tip. Made of high-grade 304 polished stainless steel, DynoMax exhaust tips are available in a variety of sizes making it easy to bolt on a custom look.

Product Features:

CUSTOM LOOK — Enhance your exhaust system with this tip that features an embossed DynoMax® logo
DOUBLE-WALL DESIGN — Features two layers of premium 304 polished stainless steel is slant cut for a beefy look
AVAILABLE IN DIFFERENT SIZES — Offered in a variety of sizes to work with a wide range of exhaust systems
EASY TO INSTALL — Clamp-on installation for an easy upgrade
BETTER TOGETHER — Use premium DynoMax® accessories when installing DynoMax mufflers and exhaust systems for a complete performance exhaust system upgrade

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$51.99

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

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$31.99

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

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$9.99

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┬« accessories when installing Walker catalytic converters and mufflers for a complete exhaust system upgrade

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$17.99

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

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$679.99

DynoMax® Ultra Flo Welded performance stainless steel mufflers feature 100-percent welded construction for lifelong durability. The unrestricted, straight-through design dyno proven to flow up to 2,000 SCFM and support up to 2,000 horsepower. Each muffler

Product Features:

Stainless steel construction for lifelong protection
100% welded design for maximum durability
Straight through design ensures unrestricted exhaust flow and reduces back pressure
CRF Technology absorbs unwanted interior resonance while maintaining a deep performance tone
Dyno proven to flow up to 2,000 SCFM and support up to 2,000 horsepower.

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$954.99

The new MACH Force XP exhaust is engineered to perform in the most extreme environments. This system is constructed from mandrel bent 4 in. 409 stainless steel tubing for maximum flow; increased horsepower; increased torque; and lower EGTs. MACH Force XP exhaust systems are the perfect combination of performance; fit; and value. All systems use factory mounting locations providing stability and hassle-free installation. High quality OE style 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 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.

Product Features:

4 in. Mandrel Bent 409 Stainless Steel Tubing
Maximum Flow
High Flow Muffler
Bayonet Style Hangers For Easy Installation

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$502.99

DynoMax® Ultra Flo Welded performance stainless steel mufflers feature 100-percent welded construction for lifelong durability. The unrestricted, straight-through design dyno proven to flow up to 2,000 SCFM and support up to 2,000 horsepower. Each muffler

Product Features:

Stainless steel construction for lifelong protection
100% welded design for maximum durability
Straight through design ensures unrestricted exhaust flow and reduces back pressure
CRF Technology absorbs unwanted interior resonance while maintaining a deep performance tone
Dyno proven to flow up to 2,000 SCFM and support up to 2,000 horsepower.

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$788.99

The MagnaFlow Street Series Cat-Back Performance Exhaust System 15665 brings out the personality of your SUV with our signature resonant, powerful engine tone and dyno-proven performance. Thanks to its fast-flowing, mandrel bent 3in. main piping and 1 Straight-Through mufflers ending in a Single Passenger Side Rear exit with 4in. Polished Welded-On Single Wall Angle Cut Rolled Edge tips, this SUV exhaust kit has the performance chops to match its sporty sound and appearance. Upgrade your ride to the next level with an exhaust that has the pipes to put other SUV’s to shame. With this system your vehicle will be producing Moderate exterior and Mild interior sound levels while leaving other cars and trucks feeling envious at every stoplight. Exhaust kit 15665 features a cat-back layout that replaces your ride’s stock exhaust components from near the catalytic converter on back. Extensive 3D scanning during development has resulted in a direct-fit design that you can easily install yourself. 15665 is produced using CNC precision robotic manufacturing techniques and is backed by MagnaFlow’s 1-year limited finish warranty and limited lifetime construction warranty.

Product Features:

Dyno-proven performance
Durable corrosion-resistant stainless steel construction
CNC precision robotic manufacturing techniques

2003 GMC Yukon XL 1500 Exhaust Parts

More 2003 GMC Yukon XL 1500 Exhaust Parts Categories

Essential 2003 GMC Yukon XL 1500 Exhaust Parts

Flowmaster Inc. – 50 Big Block Muffler – 3.00 Dual In / 3.50 Offset Out – Mild Sound (Part No.530513)

Dynomax – 54846 Exhaust Intermediate Pipe (Part No.54846)

ARP Auto Racing – For Use With Chevy Ls V8 Engine, M8 Thread Size, Hex Head, Black Oxide, Set Of 12 (Part No.134-1102)

Dorman – Direct Fit Exhaust Manifold: With Heat Shield (Part No.674-525)

Walker – CalCat Catalytic Converter- CARB Certified, Direct Replacement, No Fabrication Needed (Part No.83482)

MagnaFlow – California Grade CARB Compliant Direct-Fit Catalytic Converter (Part No.4451419)

Dynomax – 55114 Exhaust Tail Pipe (Part No.55114)

Walker – Tail Pipe Aluminized 56.75" (Part No.55540)

Dorman – Help – Exhaust Stud Kit – M10-1.5 x 62mm (Part No.03133)

Dorman – Help – Exhaust Flange Stud Kit – M10-1.5 x 62mm Stainless Steel (Part No.03133HP)

Elring – Exhaust Manifold Gas (Part No.A8111353782ELR)

Felpro – Exh. Manifold Gasket (Part No.A8112975227FEL)

Dorman – Exhaust Bolt (Part No.H80151097742DOR)

Walker – Clamp Band Bolt Dia Length Nut Type Lock Pipe Dia 2.75 (Part No.36522)

Walker – Clamp U-Bolt Bolt Dia 0.375 Length Nut Type Hex Pipe Dia 3 (Part No.35794)

Felpro – Exhaust Pipe Flange Gasket (Part No.61074)

Felpro – Exhaust Pipe Flange Gasket (Part No.61089)

Walker – Exhaust 35229 Exhaust System Hanger Insulator (Part No.35229)

Walker – Extension Pipe Aluminized 29.375" (Part No.53888)

Dynomax – 36505 Exhaust Pipe Spout (Part No.36505)

Dorman – Exhaust Manifold Clamp Repair (Part No.917-107)

Dorman – Exhaust Manifold Repair Clamp (Part No.917-108)

Walker – Ring Exhaust Pipe Flange Gasket: Fiber with Metal, Heat Resistant, Premium Materials (Part No.31610)

Walker – Donut Exhaust Pipe Flange Gasket: Graphite, Heat Resistant, Premium Materials (Part No.31554)

Dynomax – Single – 3in Cat-Back Exhaust System – Ultra Flo Welded Muffler: Stainless Steel (Part No.39442)

aFe POWER – MACH Force-Xp Cat Back Exhaust System: Polished Tip, 409 Stainless Steel, Unleashes All Avail. HP (Part No.49-44008)

Dynomax – Single – 3in Cat-Back Exhaust System – Ultra Flo Welded Stainless Steel Muffler (Part No.19360)

MagnaFlow – Street Series Cat-Back Performance Exhaust System (Part No.15665)

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2003 GMC Yukon XL 1500 Exhaust Parts

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