
Specifications
- Brand
- Gibson
- Part #
- 615522
- UPC
- 677418001501

Gibson 99-01 Chevrolet Silverado 1500 LS 4.3L 3in Cat-Back Single Exhaust - Stainless
$642.68
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Fits 1999-2001 Chevrolet Silverado 1500. This Gibson cat-back exhaust uses polished stainless steel tubing for improved performance and a deeper tone.
Key Features
- Fits 1999-2001 Chevrolet Silverado 1500, 1999-2000 Chevrolet Silverado 2500, 1999-2001 GMC Sierra 1500, and 1999-2000 GMC Sierra 2500.
- Constructed from durable, polished stainless steel with mandrel-bent tubing for optimal exhaust flow.
- Features a Superflow™ baffled and chambered muffler designed for minimal interior drone and an aggressive exterior sound.
- Exits behind the rear passenger tire with a polished stainless steel slash-cut tip.
- Includes hardware and factory-style hangers for a hassle-free, bolt-on installation with no welding required.
- Dyno-tested to show an average increase of 10-15 horsepower and 15-20 lb-ft of torque in the low-end RPM range.
⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more
Product Details
This Gibson cat-back exhaust system is built with 3-inch, mandrel-bent stainless steel tubing, a design choice that helps maintain consistent exhaust flow. It's specifically made for your 1999-2001 Chevrolet Silverado 1500 LS with the 4.3L engine, exiting behind the rear passenger tire. The system includes a Superflow™ baffled and chambered muffler, engineered to give you an aggressive sound outside the truck while keeping things notably quieter inside the cab, minimizing interior drone. You can expect an improved feel in acceleration, better hill climbing, and more power for towing and passing.
During dyno testing, this Gibson system showed its strength in the low-end RPM range, from 1800 to 3000 RPM, where it can add an average of 10-15 horsepower and 15-20 lb-ft of torque. The installation is designed to be straightforward, utilizing factory-style hangers and including all necessary hardware for a bolt-on process that requires no welding. It also features polished stainless steel slash-cut tips for a clean, professional look that lasts.
This exhaust system comes with a Lifetime Limited Warranty from Gibson, reflecting their confidence in the well-built stainless steel construction. While this system is designed for a direct fit, it's always a good idea to refer to the manufacturer's installation instructions for any specific details or torque recommendations.
Specifications
- Brand
- Gibson
- Manufacturer Part #
- 615522
- UPC
- 677418001501
Frequently Asked Questions
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