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
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | trunk, through existing opening, seats up or down |
|---|---|
| Outer bounding box | 8.00" mounting depth |
| Known obstructions | None specifically documented |
| Usable volume estimate | 1 ft³ |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | 1x10" sealed, 1.00 ft3 |
|---|---|
| Box type | sealed |
| Location | trunk |
| Subwoofers | 1x12" sealed, 1.00 ft3 |
|---|---|
| Box type | sealed |
| Location | trunk |
Sizes and depths below are what research turned up for this generation. Confirm against your own vehicle before cutting or ordering — trim levels vary.
| Factory speaker size | ~6.5" (real adapter rings sold at 6.75"-to-6.5" confirm the factory mounting location) |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | yes |
| Factory speaker size | ~6.5" (same as front) |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | yes |
| Tweeter | n/a — no confirmed rear tweeter |
| Factory amp / premium audio | Real, partial — solid for the newest year, not the whole span. Bose confirmed real for this nameplate (Nissan's own marketing lists Altima among its Bose-equipped vehicles). Specific, current confirmation: 2024 model year has Bose on SL and SR VC-Turbo trims — notably NOT Platinum, a genuine exception to the usual 'top trim gets premium audio' pattern seen on other vehicles covered here. Bose was also available on 2016-2018 cars, but which trims for those earlier years wasn't independently confirmed. |
|---|---|
| Adding subs without a head-unit swap | Confirmed straightforward — trunk-based builds don't touch the head unit |
| Head unit | No replacement needed |
Real specific spec: 8.00" mounting depth, 9.125"/11.125" cutouts (10"/12"), 1.00 ft3/chamber, sealed, 0.75" MDF. Installs through the existing trunk opening and works with seats either up or down — genuine flexibility note.
Outside links. Some are commercial products, some are owner builds posted on forums — the label says which. We do not endorse any of them.
Each link opens the tool with this vehicle already selected.
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.