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Aggressive 6.2L V8 Sound for the 2014-2019 Silverado and Sierra 1500 Denali
The CORSA 14866 is a 3.5-inch Sport cat-back exhaust system engineered for the 2014-2018 Chevrolet Silverado 1500 High Country and LTZ, the 2014-2019 GMC Sierra 1500 Denali and SLT, all powered by the 6.2L V8, in both 143.5-inch and 153-inch wheelbase configurations. Using CORSA RSC technology, the 14866 unleashes the full potential of the 6.2L V8 with a commanding, drone-free Sport exhaust note and exits through twin 4.5-inch polished Pro-Series tips that match the premium trim levels of these trucks.
Key Features
- CORSA RSC technology at Sport level for 6.2L V8 exhaust character
- 3.5-inch mandrel-bent T304 stainless steel construction
- Twin 4.5-inch polished Pro-Series exhaust tips
- Sport sound level: commanding and aggressive, completely drone-free
- Fits 2014-2019 Silverado LTZ/High Country and Sierra SLT/Denali 6.2L V8
- CORSA limited lifetime warranty
- Made in Berea, Ohio, USA
Vehicle Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2014-2018 | Chevrolet | Silverado 1500 | High Country |
| 2014-2018 | Chevrolet | Silverado 1500 | LTZ |
| 2014-2019 | GMC | Sierra 1500 | Denali |
| 2014-2018 | GMC | Sierra 1500 | SLT |
Specifications
| Detail | Value |
|---|---|
| MPN | 14866 |
| UPC | 847466015021 |
| Pipe Diameter | 3.5 inches |
| System Type | Cat-Back |
| Sound Level | Sport |
| Tip Style | Twin 4.5-inch Polished Pro-Series |
| Exit | Single Side Exit |
| Engine | 6.2L V8 |
| Wheelbase | 143.5 inches and 153 inches |
| Material | T304 Stainless Steel |
| Warranty | Limited Lifetime |
What's Included
- 1x CORSA 14866 Sport cat-back exhaust system
- Twin 4.5-inch polished Pro-Series exhaust tips
- All hardware, clamps, and gaskets for bolt-on installation
About CORSA Performance
Founded in 1989 in Berea, Ohio, CORSA Performance invented Reflective Sound Cancellation technology and engineers exhaust systems for full-size trucks and performance vehicles. Every CORSA system uses T304 aircraft-grade stainless steel with a limited lifetime warranty and is assembled in the USA.
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Frequently Asked Questions
What is the CORSA 14866?The CORSA 14866 is a 3.5-inch Sport cat-back exhaust for the 2014-2019 Chevrolet Silverado 1500 and GMC Sierra 1500 equipped with the 6.2L V8 engine, delivering an aggressive and commanding exhaust note through twin polished 4.5-inch tips using RSC technology to eliminate highway drone.
Does the 14866 fit the 5.3L Silverado or Sierra?No. The CORSA 14866 is designed specifically for the 6.2L V8 engine in Denali, SLT, LTZ, and High Country trims. The 5.3L uses a different CORSA part number such as 14873 or 14874.
Is the 14866 drone-free?Yes. CORSA RSC technology is tuned for the 6.2L V8 to eliminate drone while delivering a commanding Sport exhaust note.
Does the 14866 fit both 143.5-inch and 153-inch wheelbase trucks?Yes. The CORSA 14866 covers both the 143.5-inch and 153-inch wheelbase configurations of the 6.2L Silverado 1500 and Sierra 1500.
How does the 14866 differ from the 14866BLK?Same Sport cat-back with identical fitment and sound. The 14866 uses polished stainless tips; the 14866BLK uses matte black PVD tips for a darker appearance.
Does installation require cutting or welding?No. The CORSA 14866 is a direct bolt-on cat-back at factory mounting points.
Is a tune required?No. The 14866 retains factory catalytic converters and does not alter engine management.
What warranty does the 14866 carry?CORSA provides a limited lifetime warranty on the 14866 against defects in materials and workmanship when purchased from an authorized dealer.
Installation Instructions
- Safely raise and support the truck on rated jack stands or a lift
- Allow the factory exhaust to cool completely
- Disconnect the factory cat-back at the catalytic converter outlet
- Remove all factory muffler and pipe sections
- Test-fit CORSA 14866 sections before tightening hardware
- Attach to factory hangers and install all supplied hardware and clamps
- Torque all connections to specification and verify tip positioning
- Start engine and inspect all connections for leaks
Prop 65 Warning: This product can expose you to chemicals including nickel compounds, which are known to the State of California to cause cancer, and carbon monoxide, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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