QBGMC04212

The QBGMC04212 is a custom-fit underseat subwoofer enclosure designed specifically for 2004-2006 Chevrolet Silverado and GMC Sierra Extended Cab trucks. Engineered for strong low-frequency performance while maintaining factory interior space, this enclosure provides deep bass output with a clean OEM-style appearance.

Features & Benefits

• Custom-fit enclosure for 2004-2006 GM Extended Cab trucks
• Designed for dual 12-inch subwoofers
• Underseat installation design
• High-output ported enclosure
• Heavy-duty MDF construction
• Maximizes bass while preserving cabin space
• OEM-style fit and appearance
• Durable automotive-grade finish
• Excellent for daily-driver and high-output systems

Specifications

• Product Type: Vehicle-Specific Subwoofer Enclosure
• Model: QBGMC04212
• Subwoofer Compatibility: Dual 12-inch subwoofers
• Enclosure Type: Ported
• Vehicle Fitment:
  • 2004-2006 Chevrolet Silverado Extended Cab
  • 2004-2006 GMC Sierra Extended Cab
• Mounting Location: Under rear seat
• Construction Material: MDF wood
• Finish: Black automotive carpet or bedliner coating
• Air Space: Approximately 1.25–1.5 cubic feet per chamber
• Maximum Mounting Depth: Approximately 6 inches
• Port Tuning Frequency: Approximately 35Hz–38Hz

Vehicle Compatibility

Compatible with select:

• Chevrolet Silverado Extended Cab (2004-2006)
• GMC Sierra Extended Cab (2004-2006)