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2004 Porsche 911 Carrera

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A custom-fit vehicle-specific sub solution for your 911 Carrera saves space and offers a finish that is unrivaled.

Overview Upgrade your Stereo Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Independance Day Sale

Sub Boxes Custom-fit for your 2004 911 Carrera for 2004 Porsche 911 Carrera

A 911 Carrera custom-fit sub box is the best way to add bass without sacrificing space. You'll get a box that looks and sounds great and matches the factory "look" to a T.  We carry vehicle specific solutions like the NVX BOOST Boxes, JL Audio StealthBoxes, MTX Thunderforms and more.

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Number of Subwoofers
This value represents the number of subwoofers that the enclosure accommodates or that are included in the package or bundled kit.
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Type of Enclosure
Some of our Vehicle Specific enclosures are loaded with a subwoofer and an amplifier, some are only loaded with a subwoofer, while some are empty boxes.
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Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
Final Wired Impedance
This is the final impedance of the system as the amplifier will see it. If the final impedance is for two sets, it means that the enclosure has two sets of terminals at the listed impedance.
Box Finish
The material used on the outside of the box. Most boxes are carpeted to prevent exterior scratches; however vinyl is popular as it can often be color-matched to a near exact look of your leather factory interior.
Condition
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JL Audio Stealthbox® SB-P-996/13TW5v2

Custom fit subwoofer enclosure for select 1998-2004 911 Carrera

SB-P-996/13TW5v2 big
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JL Audio Stealthbox® SB-P-996/13TW5v2

Custom fit subwoofer enclosure for select 1998-2004 911 Carrera

• Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with Dual JL Audio 12W3v3-4
• 1200 Watts RMS
• For 1998-2004 Porsche 911 (996)
• Stealthbox mounts firmly behind the rear seats on the cargo shelf

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Used from: $2,209.99

JL Audio Stealthbox® SB-P-996/13TW5v2 (Open Box, Great)

Custom fit subwoofer enclosure for select 1998-2004 911 Carrera

SB-P-996/13TW5v2 big
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JL Audio Stealthbox® SB-P-996/13TW5v2 (Open Box, Great)

Custom fit subwoofer enclosure for select 1998-2004 911 Carrera

• Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with Dual JL Audio 12W3v3-4
• 1200 Watts RMS
• For 1998-2004 Porsche 911 (996)
• Stealthbox mounts firmly behind the rear seats on the cargo shelf

shipping truck icon Free shipping in USA. Provide zip for delivery date.
Fits select models only.
Add details to confirm fitment.
List price $2599.99
-15% $2,209.99

Available

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    FAQ for Custom-fit Subwoofer Boxes & Enclosures in 2004 911 Carrera

    Q: Can I upgrade or change the Custom-fit Subwoofer Boxes & Enclosures in 2004 Porsche 911 Carrera?

    A: Yes this page includes all the best Custom-fit Subwoofer Boxes & Enclosures that work in your 911 Carrera.

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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
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    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

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