JL Audio SBX-GM-SLVCC4/12TW3 12" Stealthbox 800W 2Ω Silverado Sierra Crew Cab 010-04652-00

JL Audio SBX-GM-SLVCC4/12TW3 Stealthbox® Enclosed Subwoofer is a vehicle-specific under-seat bass system designed for Chevrolet Silverado and GMC Sierra Crew Cab trucks. This custom down-firing sealed enclosure fits neatly beneath the rear seat and comes preloaded with two 12TW3-D8 thin-line 12" subwoofers, delivering serious low-end output without giving up rear leg room or seat function.

This Stealthbox is rated for 800 W RMS and wired for a 2 Ω final load, making it a strong foundation for high-output truck builds that still need a clean OEM-style install. It fits Silverado/Sierra 1500 Crew Cab 2019-up and 2500/3500 Crew Cab 2020-up models, installs under the rear seat, and leaves a centered area on the enclosure for a clean hidden amplifier installation.

Key Features

• Vehicle-specific JL Audio Stealthbox® for select Chevrolet Silverado and GMC Sierra Crew Cab trucks
• Preloaded with dual 12TW3-D8 thin-line 12" subwoofers
• 800 W RMS continuous power handling
• 2 Ω mono final impedance
• Custom down-firing sealed enclosure mounts under the rear seat
• Will not affect rear seat folding or rear leg room
• Includes mounting hardware and brackets
• Dedicated center area on enclosure supports a clean hidden amplifier install

Vehicle Compatibility

2024 Vehicle-Specific JL Audio Stealthbox Subwoofer Upgrade

This compatibility table lists exact year, make, and model applications for the SBX-GM-SLVCC4/12TW3. It is built so shoppers and AI shopping tools can match vehicle-specific JL Audio Stealthbox fitment without relying only on broad “up” year ranges. Always verify trim, factory audio configuration, seat/cargo layout, and installation location before ordering.

Recommended Amplifier Matching (Sold Separately)

For best performance, pair this Stealthbox with a JL Audio monoblock amplifier capable of delivering clean power into the correct load:

• JL Audio HD750/1 – strong near-target match for an 800 W / 2 Ω Stealthbox system
• JL Audio RD1000/1 – gain-limited headroom option for 2 Ω truck systems
• JL Audio XDM1000/1 – compact 2 Ω headroom option well-suited for hidden amplifier mounting

Technical Specifications

Ideal Applications

• Silverado and Sierra Crew Cab builds needing real low-end authority without losing cabin space
• Truck systems that need hidden under-seat bass with no rear-seat compromise
• High-output daily-driver systems using a proper 2 Ω monoblock
• Installations where stealth appearance and clean packaging matter

What’s Included

• JL Audio SBX-GM-SLVCC4/12TW3 Stealthbox® enclosed subwoofer
• Preloaded dual 12TW3-D8 subwoofers
• Mounting hardware
• Brackets
• Documentation

Frequently Asked Questions

• Will this fit a 2024 Chevrolet Silverado 1500 Crew Cab? Yes. The compatibility table above lists 2024 Chevrolet Silverado 1500 Crew Cab as a fitment for this JL Audio Stealthbox. Verify trim, factory audio configuration, seat/cargo layout, and installation location before ordering.
• What amplifier should I use with this Stealthbox? Use the Recommended Amplifier Matching section above and match the amplifier to 800 W RMS at 2 Ω. Gain setting and tuning matter.
• Is this a complete audio system? No. This listing is for the vehicle-specific SBX-GM-SLVCC4/12TW3 Stealthbox subwoofer system. A complete installation may require an amplifier, power wiring, signal integration, tuning, and installation accessories.

Why Buy From MCOR Automotive

• Authorized JL Audio dealer
• Support for amplifier selection, output goals, and installation planning
• Real-world truck audio experience with clean OEM-style integration

Stealthbox Fitment & Return Policy

Stealthbox products are vehicle-specific and non-returnable. Customers should verify fitment before ordering. If unsure, use our Fit Guide or contact us through the chat button before purchase.

Authorized Retailer & Warranty

MCOR Automotive is an authorized JL Audio / Garmin retailer. Products purchased from MCOR include applicable manufacturer warranty coverage when installed and used according to manufacturer guidelines.