The MagnaFlow Street Series Cat-Back Performance Exhaust System 15778 brings out the personality of your Truck 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 Truck 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 Truck'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 15778 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. 15778 is produced using CNC precision robotic manufacturing techniques and is backed by MagnaFlow's 1-year limited finish warranty and limited lifetime construction warranty.
This Part Fits:
| Year |
Make |
Model |
Submodel |
| 2003-2005 |
Chevrolet |
Silverado 1500 |
Base |
| 2004-2006 |
Chevrolet |
Silverado 1500 |
Hybrid |
| 2003-2006 |
Chevrolet |
Silverado 1500 |
LS |
| 2003-2006 |
Chevrolet |
Silverado 1500 |
LT |
| 2003-2006 |
Chevrolet |
Silverado 1500 |
WT |
| 2004 |
Chevrolet |
Silverado 1500 |
Z71 Off-Road |
| 2007 |
Chevrolet |
Silverado 1500 Classic |
Hybrid |
| 2007 |
Chevrolet |
Silverado 1500 Classic |
LS |
| 2007 |
Chevrolet |
Silverado 1500 Classic |
LT |
| 2007 |
Chevrolet |
Silverado 1500 Classic |
WT |
| 2003-2005 |
GMC |
Sierra 1500 |
Base |
| 2003,2006 |
GMC |
Sierra 1500 |
SL |
| 2003-2006 |
GMC |
Sierra 1500 |
SLE |
| 2003-2006 |
GMC |
Sierra 1500 |
SLT |
| 2003-2006 |
GMC |
Sierra 1500 |
WT |
| 2007 |
GMC |
Sierra 1500 Classic |
Hybrid |
| 2007 |
GMC |
Sierra 1500 Classic |
SL |
| 2007 |
GMC |
Sierra 1500 Classic |
SLE |
| 2007 |
GMC |
Sierra 1500 Classic |
SLT |
| 2007 |
GMC |
Sierra 1500 Classic |
WT |
⚠️ California Proposition 65 Warning:
This product may expose you to chemicals known to the State of California
to cause cancer or reproductive harm.
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Price Match Guarantee:
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Project Incentives:
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We reward enthusiasts who trust us with their major projects. Use these tiered codes at checkout to apply instant savings to your order:
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• AH630 — $630 OFF $9000+
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Fitment Guarantee:
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Avoid the headache of the wrong part. If you are unsure about compatibility, contact us first. If we verify the fitment for your vehicle via email and it doesn’t fit, we will handle the exchange at no cost to you.
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Our experts will review your specifications and provide written confirmation for your build.
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Unused items in brand-new, original packaging can be returned within 30 days. While standard refunds incur a 25% restocking fee, we will waive this fee entirely if you choose store credit or an exchange for your next upgrade.
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Exclusions:
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To ensure every customer receives brand-new, untampered components, parts that have been installed, modified, or used are non-returnable. Custom builds, special orders, and wheel/tire packages are considered final sale.
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Need assistance? Reach out via our
Contact Form before shipping any items back so we can provide you with an RMA number.
Fitment Guarantee
Fitment guides and tools are helpful—but your car is unique! Some trims and options aren’t always listed, so if you want 100% confidence that a part will fit, our team is happy to double-check for you. We take the guesswork out of your purchase by standing behind our expertise.
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Verify Your Build:
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If this product doesn't list your specific vehicle data, simply reach out to support@autohousesupply.com. We will manually verify compatibility for you.
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Our Promise:
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When we confirm a fitment in writing and it doesn’t work for your application, we cover the return shipping and exchange it at no cost to you.
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Questions? Send us your
Year, Make, and Model via our
Contact Form and we’ll get you a definitive answer so you can buy with confidence.
