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, EL/Max (extended length)
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 (retailer-measured, promoted from existing notes) |
|---|---|
| Outer bounding box | 51"W x 15"H x 24"/30"D (below side ledges) |
| Known obstructions | Factory subwoofer mounting bosses behind the quarter panels are fixed anchor points that determine the aftermarket-replacement location, distinct from the larger open cargo envelope |
| Usable volume estimate | 8 ft³ |
Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.
| Subwoofers | 1x10" sealed (direct-fit Stealthbox, factory location) |
|---|---|
| Box type | sealed |
| Location | factory subwoofer location, zero cargo loss |
| Subwoofers | 1x15" or custom multi-sub |
|---|---|
| Box type | sealed or ported |
| Location | behind 3rd row, custom large 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 | 6x8" or 5x7", with 1.570" tweeters also in the door panels |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | Front door panel. IMPORTANT CROSS-REFERENCE, confirmed earlier this same completeness pass: this exact figure was originally (mis)attributed to the shared-platform Lincoln Navigator's own entry, sourced from a Crutchfield guide covering both vehicles together — direct research corrected the Navigator's real tweeter (a THX-branded 2.194" unit in the rear pillar, genuinely different). This Expedition entry is the CORRECT home for the 1.570" figure — it belongs here, not to the Navigator. |
| Factory speaker size | 6x8" or 5x7" (same platform family as front) |
|---|---|
| Known obstructions | None specifically documented |
| Adapter bracket needed | unconfirmed |
| Tweeter | n/a — tweeter not independently confirmed as doubled to rear doors |
| Factory amp / premium audio | Partial year split, not a full breakdown. 2015-2017 (facelift years): Sony-branded 12-speaker premium system confirmed real and named — forum owners report it as the SAME system across XLT, Limited, and Platinum trims for these years, i.e. not trim-gated once offered. 2007-2014: no source found — not researched still applies to the earlier two-thirds of this generation's span. |
|---|---|
| Adding subs without a head-unit swap | Straightforward — factory sub location is a known, bolt-in-friendly anchor point |
| Head unit | No replacement needed |
Real measured cargo space: 51"W x 15"H x 24"/30"D (below side ledges). Factory subwoofers mount behind the quarter panels with fixed mounting bosses that determine the aftermarket-replacement location — JL Audio Stealthbox is a confirmed direct fit here. Larger custom option: behind-3rd-row box, 48"w x 17.5"tall, 9.75" mounting depth, hole cutouts for 15" square or 13.75" round subs.
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.