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: King Cab, Crew Cab
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | under the rear bench seat, crew cab |
|---|---|
| Outer bounding box | No independently measured figure. Published box footprints are lower bounds on the cavity, not the cavity: NET Audio single 34 x 20.5 x 10 in and dual 55 x 20.5 x 10 in (as printed; axes not labelled); Ground Shaker 12" dual height 6 1/2", length 49 1/4", depth 13 1/4" (labelled by Ground Shaker). |
| Known obstructions | Steel seat bottom limits mounting depth (NET Audio: 5 1/2 in standard, 6 1/4 in with a metal backing plate; Zenclosures 5 5/8 in, optional 6 1/4 in). Large baskets or magnets may not fit (Ground Shaker). |
| Location | under the rear seat, king cab |
|---|---|
| Outer bounding box | No independently measured figure. Published box footprints are lower bounds on the cavity, not the cavity: NET Audio dual 54.5" x 15.5" x 9" (as printed; axes not labelled); Ground Shaker 12" dual height 9 1/4", length 49 1/2", top depth 13 1/2", bottom depth 11 1/4" (labelled by Ground Shaker). |
| Known obstructions | Steel seat bottom limits mounting depth (NET Audio: 5.5 in with a steel plate; Ground Shaker 6 1/4 in). |
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 | Nissan's 2008-2014 material gives speaker counts (6, 8 or 10), not sizes or positions |
|---|---|
| Adapter bracket needed | unconfirmed |
| Factory speaker size | same gap as the front doors |
|---|---|
| Adapter bracket needed | unconfirmed |
| Factory amp / premium audio | Nissan. 2008 kit: LE "Rockford Fosgate-powered audio system with eight speakers"; available "350-watt, 10-speaker Rockford Fosgate audio package featuring Bluetooth hands-free phone system and XM satellite radio tuner". 2012 and 2014 kits, by trim and cab: S "AM/FM/CD - 2 DIN 6 speakers (King Cab) / 8 speakers (Crew Cab)"; SV "AM/FM/CD6 with mid-switches, MP3 capability, 6 speakers (King Cab) / 8 speakers (Crew Cab)", optional "Rockford Fosgate-powered 350-watt, 8 speakers (King Cab)" (2014: also 10 speakers, subwoofer, dual media on the Crew Cab); PRO-4X "Rockford Fosgate-powered 350-watt, 8 speakers (King Cab) / 10 speakers, subwoofer, dual media (Crew Cab)"; SL standard "Rockford Fosgate-powered audio system with up to 10 speakers (eight speakers on King Cab, 10 speakers on Crew Cab)". The crew-cab Rockford system includes a subwoofer; its position was not stated on any page read. |
|---|---|
| Adding subs without a head-unit swap | no integration information found for these years |
Box makers build crew-cab boxes for the space under the rear bench: NET Audio "under the rear bench seat on the 60% side of the 60/40 split", with a steel-bottomed seat that limits depth ("the bottom of the seats are metal"); Zenclosures "Fits Under Rear Seat" with "1 1/4" clearance under the box"; Ground Shaker "FITS UNDER REAR SEAT". Their printed outside dimensions are in the reference builds. Nissan publishes no behind-seat measurement. Interior volume (not cargo): Crew Cab 125.6 cu ft (2012 and 2014).
NET Audio and Ground Shaker build king-cab boxes for the space under the rear seat (NET: "Under-seat installation"; Ground Shaker "Positions under rear seat with downward-firing orientation"). Nissan publishes no behind-seat measurement. Interior volume (not cargo): King Cab 112.8 cu ft (2012 and 2014).
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.