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This Gibson 65677B is the Black Elite cat-back dual split exhaust built specifically for the 2015–2020 Cadillac Escalade ESV 6.2L and the 2015–2020 GMC Yukon XL Denali 6.2L. Mandrel-bent 409 stainless steel tubing feeds into a pair of 4-inch black ceramic-coated T-304 stainless rolled slash-cut tips one exiting behind each rear wheel. Part number 65677B is a direct bolt-on with no welding, no cutting, and all hardware included. 50-state legal. Made in the USA. Backed by Gibson',s Lifetime Limited Warranty.
Key Features
- Product series: Black Elite - Dual Split Exhaust
- Tubing Diameter: 3.5-in./ 2.25-in. 409 Stainless mandrel bent tubing.
- Tip Description: 4in. Black Ceramic T304 Stainless. Rolled Slash-Cut Tip. Clamp on.
- Tip Specification: Inlet 2.25 in., Outlet 4.0 in., L-12 in.
- Muffler Description: Baffled &, Chambered Design, No internal Packing, Minimal Interior Drone, Aggressive Sound
- Muffler Dimension: 4 x 9 x 18 in Oval Body, 3..0. in. Center Inlet, 2.25 in. Dual Outlet.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2015-2020 | Cadillac | Escalade ESV | 6.2L |
| 2015-2020 | Cadillac | Escalade EXT | 6.2L |
| 2015-2020 | GMC | Yukon XL 1500 | Denali, 6.2L |
Specifications
| Manufacturer | Gibson |
|---|---|
| Manufacturer Part Number | 65677B |
| Product Type | Catback |
| Fitment Type | Vehicle specific |
| Tubing Diameter | 3.5-in./ 2.25-in. 409 Stainless mandrel bent tubing. |
| Tip Description | 4in. Black Ceramic T304 Stainless. Rolled Slash-Cut Tip. Clamp on. |
| Tip Specification | Inlet 2.25 in., Outlet 4.0 in., L-12 in. |
| Muffler Description | Baffled &, Chambered Design, No internal Packing, Minimal Interior Drone, Aggressive Sound |
| Muffler Dimension | 4 x 9 x 18 in Oval Body, 3..0. in. Center Inlet, 2.25 in. Dual Outlet. |
| Additional Description | Includes all hardware and factory style hangers for easy bolt on installation. |
| Exit Position | Exit Is Straight Out The Back. |
| Warranty | Lifetime Limited Warranty |
What's Included
- One new Gibson catback in the exact configuration identified by manufacturer part number 65677B
- Hardware and accessories only when supplied for this exact part number
About Gibson
Gibson develops vehicle-specific and universal exhaust components for street, truck, SUV, and performance applications. Selection and installation requirements remain exact-part-number specific.
Related Gibson Products
- Gibson 65402 Dual Extreme Cat-Back Exhaust – 2007-2010 Cadillac Escalade / GMC Yukon Denali 6.2L – 5-Inch Polished Tips
- Gibson 14-19 Cadillac Escalade Base 6.2L 3.5in/2.25in Cat-Back Dual Split Exhaust - Black Elite
- Gibson 21-22 GMC Yukon XL Denali/Suburban 6.2L 2/4wd Cat-Back Dual Split Exhaust - Stainless
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Frequently Asked Questions
Which vehicles fit Gibson GIB65677B?
Gibson GIB65677B is listed for 2015-2020 Cadillac Escalade ESV, 2015-2020 Cadillac Escalade EXT, and 2015-2020 GMC Yukon XL 1500. Confirm the exact engine, trim, drivetrain, body or cab configuration, exhaust layout, and every application note before ordering.
What should I verify before ordering Gibson GIB65677B?
Match the exact part number, system type, material, finish, tubing and connection diameters, exhaust configuration, package contents, and current manufacturer notes shown in this listing.
What should be checked when installing Gibson GIB65677B?
Verify all interfaces, hanger positions, tip and body clearances, clamp or fastener torque, leak-free operation, and local emissions requirements. Reinspect the system after its first heat cycle.
Installation Instructions
Follow the current Gibson instructions and vehicle service information for this exact part number. Work on a cool exhaust, support the vehicle safely, confirm all interfaces and clearances, align the system before final tightening, test for leaks, and inspect the installation again after the first heat cycle.
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