2016-2025 Nissan Titan Subwoofer Box Fitment

2016-2025 Nissan Titan 2nd 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: King Cab, Crew Cab

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.

Crew Cab Solid

Location	underseat, crew cab
Outer bounding box	49.25"W x 6.5"H x 13.25"D — this is effectively the same figure as the audio-industry reference build already in this page (AK Audio), cross-confirmed by generic storage-industry products (DU-HA) also molded to fit both King Cab and Crew Cab across a similarly wide 2004-2024 span
Known obstructions	None specifically documented in the empty cavity. On 2016-2018 Rockford Fosgate-equipped Crew Cabs Nissan lists an "underseat subwoofer" (2016 XD kit, PRO-4X premium audio): that factory unit sits in this under-seat run and Nissan gives no dimensions. Whether the Fender-era (2019+) sub is also under the seat was not found. Nissan: "Lockable rear underseat storage compartment with fold-out flat floor" on every Crew Cab.
Usable volume estimate	1.3 ft³

Starting points

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

Budget

Subwoofers	1x8" or 1x10" sealed, under-seat dual chamber
Box type	sealed
Location	under rear seat

Enthusiast

Subwoofers	2x12" ported (Skar Audio)
Box type	ported
Location	under rear seat

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 size	6.5" and 6x9" (varies by trim) — a real Metra 82-7402 adapter bracket product exists specifically to install 6x9" speakers in the factory front opening, confirming this is a known, catalogable swap
Known obstructions	None specifically documented
Adapter bracket needed	yes for 6x9" upgrades (Metra 82-7402)

Rear doors Solid

Factory speaker size	6.5" — described as 'a fairly easy swap'
Known obstructions	None specifically documented
Adapter bracket needed	no
Tweeter	n/a — tweeter is dash-corner, front only

Factory audio integration

Factory amp / premium audio	Per Nissan's press kits. 2016-2018: Rockford Fosgate — Crew Cab PRO-4X/SL/Platinum Reserve "Rockford Fosgate-powered AM/FM/CD audio system, 12 speakers" (King Cab PRO-4X 10 speakers) with a subwoofer included or optional by trim; S and SV 6 speakers. 2019 onward: FENDER Premium Audio replaced it — "485-watt, 9-channel amplifier", 12 speakers Crew Cab / 10 King Cab, "Fender Bassman Subwoofer", standard on Crew Cab SL and Platinum Reserve, optional on PRO-4X (2019, 2020 kits); the 2023 and 2024 kits still list Fender, 12 speakers with subwoofer. Rockford Fosgate (12 speakers since the 2016 launch) applies only through 2018; no 420W figure appears in Nissan's press kits.
Adding subs without a head-unit swap	Confirmed straightforward — direct under-seat products exist
Head unit	No replacement needed

Mounting locations

Crew Cab Solid

under rear seat

Specific full spec: under-seat dual chamber, 49.25"W x 6.5"H x 13.25"D, 0.65 ft3/chamber (1.3 ft3 total), fits 8"/10"/12". Dual sealed variant: 1.87 ft3 total (0.94 ft3/sub), 5.5" mounting depth (up to ~6.25" with metal back plates for extra clearance). Skar Audio's dual-12" ported is the enthusiast-tier commercial option for the current generation.

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.

AK Audio (sealed) off-the-shelf
49.25"W x 6.5"H x 13.25"D, 0.65 ft3/chamber (1.3 ft3 total), fits 8"/10"/12" — note: this listing spans 2004-2021, crossing the 1st/2nd gen boundary, so the underseat geometry may not be the same across that span
Skar Audio (2 x 12", ported) off-the-shelf
Dual 12" ported, custom-fit MDF
Sound Off Audio (2 x 10", ported) off-the-shelf
2016-26 Nissan Titan Crew Cab Dual 10" Ported. Sound Off Audio states fit years 2016-26 for Nissan Titan Crew Cab. No outside dimensions on the product page. Published volume: 1.8 cubic feet mono chamber. Mounting depth 5.3 inches. Type: Ported. Subwoofers: Dual 10".
Sound Off Audio (2 x 12", other (sealed/ported not stated by the maker)) off-the-shelf
2016-26 NISSAN TITAN CREW CAB DUAL 12" SHALLOW SUBWOOFER BOX (SKU TTN16-12.2). Sound Off Audio states fit years 2016-26 for Nissan Titan Crew Cab. No outside dimensions on the product page. Published volume: 0.75 per woofer. Mounting depth 4.5". Type: upfire (page says; sealed/ported not stated). Subwoofers: Dual 12". Location: Under rear seat.
Sound Off Audio (4 x 8", ported) off-the-shelf
2016-26 Nissan Titan Crew Cab Quad 8" vented. Sound Off Audio states fit years 2016-2026 for Nissan Titan Crew Cab. No outside dimensions on the product page. Published volume: 2.4 cubic ft (total). Mounting depth 6 inches. Type: Vented. Subwoofers: Quad 8". Location: Under seat (factory storage under the seat is removed).
Sound Off Audio (2 x 8", ported) off-the-shelf
2016-2026 TITAN DEEP DUAL 8" PORTED (SKU TTN-8.2DEEP). Sound Off Audio's title says 2016-2026; the page's own heading line says 2016-21, for the Nissan Titan. Of the 2016-2025 model years here, it is stated for 2016-2021. No outside dimensions on the product page. Published volume: 2.0 cubic feet. Mounting depth 7". Type: Ported. Subwoofers: Dual 8". Location: Under backseat.

Build it for this vehicle

Design a box for this vehicle — Enclosure volume, port tuning, and a see-through render.
Door speaker fitment — No measured door depth on file for this vehicle yet, so there is no fit check to run. The page says how to request one.
See the factory speaker locations — Factory speaker sizes, depths and locations we have researched 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.