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 SUV
These are researched envelopes, not a guarantee. Measure your own vehicle — the numbers here tell you what to expect, not what you have.
| Location | cargo area (promoted from existing notes) |
|---|---|
| Outer bounding box | 51"W x 20"H x 15"/12"D |
| Known obstructions | None specifically documented |
| Usable volume estimate | 5.5 ft³ |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | 1x10" sealed, under-floor factory-style (JL Stealthbox) |
|---|---|
| Box type | sealed |
| Location | under rear cargo floor, zero cargo loss |
| Subwoofers | 1x12" or larger custom, ~0.85 ft3 baseline |
|---|---|
| Box type | sealed |
| Location | cargo area, custom build |
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 | oddly-shaped 6x9" integrated into factory brackets — aftermarket 6x9"s won't fit due to the bracket; 6.5" or 5.25" with an aftermarket mounting bracket is the practical path |
|---|---|
| Known obstructions | Factory bracket blocks same-size aftermarket 6x9" replacements |
| Adapter bracket needed | yes |
| Factory speaker size | 6.5" — consistent across the Sequoia's full 2001-2025 production run per cross-generation sourcing |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Factory amp / premium audio | Toyota pressroom by year — 2011: SR5 8 speakers; Limited "JBL Synthesis AM/FM six-disc CD changer system with 14 speakers"; Platinum "JBL Synthesis AM/FM four-disc CD changer audio system with 14 speakers". 2015: SR5 8 speakers; Limited "14 speakers including subwoofer"; Platinum Entune Premium JBL. 2019: SR5 8 speakers; Limited "14 JBL GreenEdge speakers including subwoofer amplifier". 2022: SR5/TRD Sport 8 speakers; Limited a 12-speaker Premium Audio (not JBL); TRD Pro and Platinum "JBL 14-speaker system, including subwoofer and amplifier". So the 14-speaker JBL is on the Limited AND Platinum through about 2019 and moves to the TRD Pro and Platinum in 2022. Kept from earlier sourcing: 14 speakers including an 8" subwoofer, 440W amplifier (Platinum) — the 8" and 440W are not on these Toyota pages. |
|---|---|
| Adding subs without a head-unit swap | Confirmed straightforward — JL Audio Stealthbox exists as a direct factory-style replacement |
| Head unit | No replacement needed |
Measured cargo space: 51"W x 20"H x 15"/12"D — Toyota's full-size SUV, comparable in scale to the domestic Tahoe/Expedition pages. Custom build: 14"Wx14"Hx11.75"D outside / 12.5x12.5x9.5" inside, 0.85 ft3, less than a pound of poly-fill, silicone/rope-caulk sealed.
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.