2013-2015 Nissan Altima 5th 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.

Sedan Unconfirmed

Locationtrunk
Outer bounding boxNo independently measured trunk dimensions found for this generation.
Known obstructionsNone documented for this generation.

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 sizeNissan's 2013-2015 material gives speaker counts (4, 6 or Bose 9), not sizes or positions
Adapter bracket neededunconfirmed

Rear doors Unconfirmed

Factory speaker sizesame gap as the front doors
Adapter bracket neededunconfirmed

Factory audio integration

Factory amp / premium audioNissan. 2013 specifications by trim: 2.5 base "AM/FM/CD with 4 speakers"; 2.5 S and 2.5 SV "AM/FM/CD with 6 speakers"; 3.5 S and 3.5 SV "AM/FM/CD with 6 speakers"; 2.5 SL and 3.5 SL "Bose with AM/FM/CD/AUX w/9 speakers". The 2013, 2014 and 2015 brochures say the same in prose: four speakers (2.5), six speakers (2.5 S), "Bose Premium Audio System with nine speakers" (SL); the SV adds an "upgraded audio system with 5-inch color display" to the S equipment without restating a speaker count. No wattage and no subwoofer is stated on any page read.
Adding subs without a head-unit swapno integration information found for these years

Known integration products

Mounting locations

Sedan Unconfirmed

Nissan prints 15.4 cu ft of cargo volume for the sedan: its 2013 specifications page ("Cargo 15.4") and the 2013, 2014 and 2015 brochures ("Cargo volume (cu. ft.) 15.4"). Unlabelled US cubic feet; a luggage rating, not box dimensions. No measured trunk width, height or depth was found. Measure your own trunk before cutting wood.

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.

Build it 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.