2002-2006 Nissan Altima Subwoofer Box Fitment

2002-2006 Nissan Altima 3rd Gen — subwoofer box fitment

What we researched for this specific generation: where an enclosure actually fits, what the factory speakers are, how the factory audio is wired, and which real builds and commercial products exist for it. Confidence badges say how well each figure is sourced — this is research, not manufacturer spec.

Body styles covered: 4-Door Sedan

Where a box actually fits

These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.

Trunk Unconfirmed

Location	trunk, below the rear dash
Outer bounding box	No outside dimensions found: Zenclosures and Sound Off Audio print none. No measured trunk dimensions found.

Door speaker fitment

Sizes and depths below are what research turned up for this generation. Confirm against your own vehicle before cutting or ordering — trim levels vary.

Front doors Unconfirmed

Factory speaker size	no maker or Metra source read for the front doors
Adapter bracket needed	unconfirmed

Rear doors Unconfirmed

Factory speaker size	no maker or Metra source read for the rear doors
Adapter bracket needed	unconfirmed

Factory audio integration

Factory amp / premium audio	Nissan USA press kits 2004 and 2006: standard "6-speaker AM/FM/CD with an available in-dash 6-disc CD changer"; optional "Bose premium audio system with 8 speakers" (among the packages that include it: 2004, the 2.5 S Premium Convenience Package, 3.5 SE Sport Package Plus and 3.5 SE Leather Package; 2006, the 3.5 SE Sport Plus and Leather packages); standard on the SE-R per the 2006 sedan kit ("standard on SE-R"). Wattage, subwoofer and speaker locations are not stated. 2002-2003 and 2005 not read.

Factory amp / premium audio

Nissan USA press kits 2004 and 2006: standard "6-speaker AM/FM/CD with an available in-dash 6-disc CD changer"; optional "Bose premium audio system with 8 speakers" (among the packages that include it: 2004, the 2.5 S Premium Convenience Package, 3.5 SE Sport Package Plus and 3.5 SE Leather Package; 2006, the 3.5 SE Sport Plus and Leather packages); standard on the SE-R per the 2006 sedan kit ("standard on SE-R"). Wattage, subwoofer and speaker locations are not stated. 2002-2003 and 2005 not read.

Known integration products

none sourced

Mounting locations

Trunk Solid

trunk, below the rear dash

Nissan USA's 2004 and 2006 press kits: "The trunk measures 15.6 cubic feet." fueleconomy.gov prints lv4 = 16 for 2002, 2004 and 2006. A luggage rating, not a box volume. Boxes: Zenclosures 1.07 ft3 per chamber at 10.00 in; Sound Off Audio 0.7 cubic ft per chamber at 9 in.

Builds and products found for this vehicle

Outside links. Some are commercial products, some are owner builds posted on forums — the label says which. We do not endorse any of them.

Zenclosures (sealed) off-the-shelf
2002-06 Nissan Altima Sedan Subwoofer Enclosure (SKU ALT0206). Zenclosures states fit years 2002-06 (sedan). No outside dimensions on the product page. Published volume: 1.07 ft3 per chamber (2 chambers for two subs, 1 for one). Mounting depth 10.00 in. Type: sealed. Location: trunk; installed through the trunk opening and slides in directly below the rear dash. Sub options 1x10, 1x12, 2x10, 2x12 in; 0.75 in MDF. Maker note: "fits firmly into place without removing or modifying any part of the car".
Sound Off Audio (other (sealed/ported not stated by the maker)) off-the-shelf
Dual Sub Box 2002-2006 NISSAN ALTIMA (SKU ALTIMA DUAL). Sound Off Audio states fit years 2002-2006 (body style not printed). No outside dimensions on the product page. Published volume: .7 cubic ft per chamber. Mounting depth 9 inches. Type: not printed. Location: not printed. Fits dual 8, 10 and 12 in subs.

Build it for this vehicle

Design a box for this vehicle — Enclosure volume, port tuning, and a see-through render.
Door speaker fitment — No measured door depth on file for this vehicle yet, so there is no fit check to run. The page says how to request one.
See the factory speaker locations — Factory speaker sizes, depths and locations we have researched for this vehicle.

Each link opens the tool with this vehicle already selected.

Before you cut anything

Measure your own vehicle. Trim levels, factory subwoofer options, and mid-generation changes all move these numbers, and a box cut to a researched figure that does not match your truck is wasted wood. Where a badge reads Unconfirmed, treat the value as a starting point for your own measurement, not as an answer.