Metra 99-3321B Single/Double-DIN Dash Kit for Select GM Vehicles

Metra 99-3321B is a Single-DIN or Double-DIN radio installation dash kit for select 2006-up General Motors vehicles. It provides ISO-mount provisions for standard 2-inch or 4-inch aftermarket radios with a matte black factory-style finish.

Key Features

• Single-DIN or Double-DIN dash kit for select GM vehicles
• Fits standard 2-inch or 4-inch aftermarket radios with ISO-mount provisions
• Includes pocket for Single-DIN installations; pocket is not used for Double-DIN installations
• Painted scratch-resistant matte black
• ABS plastic construction for factory-like fit and finish
• Includes brackets, hardware, and detailed installation instructions

System / Wiring Notes

• This is a dash mounting kit only; wiring harnesses, antenna adapters, and vehicle interfaces are sold separately unless specifically supplied by the manufacturer
• Retained factory features depend on the vehicle, factory equipment, aftermarket radio, and additional integration parts used
• Metra lists this kit for a broad GM vehicle range; verify exact year, model, body style, and factory radio system before purchase

Vehicle Compatibility

Installation Notes

• Confirm exact vehicle fitment, factory audio system, trim level, and radio opening before installation
• Additional wiring harnesses, antenna adapters, steering wheel control interfaces, or data interfaces may be required depending on the vehicle and radio
• Professional installation is recommended for best results
• Check the manufacturer instructions before installation

What's in the Box

• Metra 99-3321B radio installation dash kit
• Pocket
• Brackets and installation hardware

Technical Specifications

• Brand: Metra
• Model: 99-3321B
• Product Type: Single-DIN / Double-DIN radio installation dash kit
• Application: Select 2006-up General Motors aftermarket radio installations
• Compatibility Type: Vehicle-specific
• Radio Provision: Single-DIN with pocket or Double-DIN
• Finish: Matte black
• Material: ABS plastic

Identifiers & Packaging

• MPN: 99-3321B
• UPC: 86429354801
• Sold As: Each
• Included Components: Dash kit, pocket, brackets, and installation hardware

Why Buy From MCOR Automotive

• Authorized retailer for the brands we sell
• Specialists in vehicle audio integration, radio replacement parts, and installation accessories
• 22+ years of professional automotive electronics experience
• Expert support for compatibility verification and proper setup