2020-2024 Ford Explorer 6th Gen (U625) — 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 SUV

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.

Standard Unconfirmed

Locationrear cargo area, flat-load floor
Outer bounding boxNot independently measured — flat-load floor confirmed to support a single 12" ported box well; specific WxHxD not found
Known obstructionsTrim-dependent: B&O 14-speaker system has a built-in sub taking up some factory space; Sony-package trims have a smaller factory 8" sub location instead
Usable volume estimate3 ft³

Starting points

Suggested configurations for this vehicle, not prescriptions. Run the numbers in the Box Builder before you buy anything.

Budget

Subwoofers1x8" replacement (Sony-package trims — factory sub is a known rattle/reliability issue)
Box typesealed
Locationfactory location, direct replacement

Enthusiast

Subwoofers1x12" ported
Box typeported
Locationrear cargo area, flat-load floor

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 Solid

Factory speaker size6.75" (base) or 6x9" midbass on the 14-speaker B&O system — real, confirmed via named Kicker direct-fit kits. Real, notable architecture confirmed on the B&O 14-speaker system: the 6x9" is a lower-door MIDBASS driver, with a SEPARATE midrange+tweeter positioned HIGHER in the door — a genuine 3-driver-per-door layout on the premium system, not a simple coaxial, similar in spirit to the Mustang S550's door architecture already confirmed on other vehicles covered here.
Adapter bracket neededunconfirmed
TweeterUpper front door (B&O 14-speaker system) — real, confirmed position, higher in the door than the midbass driver.
MidrangeUpper front door, same B&O system, paired with the tweeter

Rear doors Solid

Factory speaker size6-3/4" — real, confirmed via a named Kicker direct-fit kit.
Adapter bracket neededunconfirmed
Tweetern/a — not independently confirmed to exist in rear doors; the multi-driver layout described above is specific to the front doors

Factory audio integration

Factory amp / premium audioConfirmed real, named systems: ST and Platinum trims get a Bang & Olufsen 14-speaker setup with a BUILT-IN subwoofer and 980W of amplification — a genuinely serious factory system, not a token setup. Sony-package trims instead get a single 8" factory sub in a compact sealed enclosure, which builders report is prone to rattling as mounts age.
Adding subs without a head-unit swapNon-premium trims: straightforward, plug-and-play kits exist. B&O trims: the factory system is powerful enough that some owners may not need to add anything; if they do, that 980W amplified system needs a proper adapter, not a generic tap. Sony-package trims: the aging/rattling factory 8" sub is itself a plausible UPGRADE target, not just an 'add to it' scenario — worth a distinct recommended tier.
Head unitNo replacement needed

Known integration products

Mounting locations

Standard Likely

This generation has a flat-load cargo floor, which real builders confirm makes a single 12" ported box in the rear cargo area a strong-performing, straightforward option. Plug-and-play kits exist specifically for 2020-2024 models — basic tools, a few hours, no custom fabrication required for a standard install.

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.