1998-2004 Nissan Frontier Subwoofer Box Fitment

1998-2004 Nissan Frontier 1st Gen (D22) — 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: Crew Cab (2000-2004), Extended Cab / King Cab, Regular 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 Unconfirmed

Location	behind the rear seat
Outer bounding box	No maker prints full outside dimensions; Sound Off Audio prints a length only: 49 in (large) and 36 in (small). Zenclosures prints air space (0.50 and 0.25 ft3 per sub) and 4 1/4 in mounting depth.
Known obstructions	Jack (Zenclosures).

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 Unconfirmed

Factory speaker size	no Nissan or Metra source gives the door speaker size for these years (Nissan is not on Metra's list of makes)
Adapter bracket needed	unconfirmed

Rear doors Unconfirmed

Adapter bracket needed	unconfirmed

Factory audio integration

Factory amp / premium audio	no maker brochure for these model years was reachable

Known integration products

no line-output converter or amp interface checked for this vehicle

Mounting locations

Crew Cab Likely

behind rear seat

Shallow boxes only (4 1/4 to 4.5 in mounting depth) holding one or two 8 in subs; the jack must be removed (Zenclosures); a "small" version "does not fit the full length behind your seat" (Sound Off Audio). Every box that names these years is for the Crew Cab (2000 on, per Sound Off Audio); no Regular Cab or King Cab box names the 1998-2004 truck. NET Audio's Extended Cab box, listed below, is titled 2001-2018, a range that runs into the next generation, and no maker says it fits the 1998-2004 Extended Cab. No maker or EPA cargo figure for a pickup: the box makers' listings are the fit data.

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.

Zenclosures + Super Crew Sound (sealed) off-the-shelf
Nissan Frontier Crew Cab 2004 & older Single / Dual Subwoofer Box - Wide Version (SKU frontierccduallarge04older). Zenclosures states fit years "2004 & older" (Crew Cab). No outside dimensions on the product page. Published volume: 0.50 ft3 per sub chamber (total not printed). Mounting depth 4 1/4 in (optional 4 7/8 in). Type: sealed. Subwoofers: one or two 8 in, round or square (cutout 7 1/8 in). Location: behind the rear seat; firing direction not printed. Maker notes: "Some Subwoofers with oversized framing/magnets may not fit without modification." The jack must be removed. Price $217.99. Also sold by Super Crew Sound, the same catalogue under a second store name, as its Nissan Frontier Crew Cab 2004 & down Lg Dual: https://supercrewsound.com/nissan-frontier-crew-cab-2004-down-lg-dual-subwoofer-box/ . The figures in this page are Zenclosures'.
Zenclosures + Super Crew Sound (sealed) off-the-shelf
Nissan Frontier Crew Cab 2004 & older Single / Dual Subwoofer Box - Small Version (SKU frontierccdualsmall04older-1). Zenclosures states fit years "2004 & older" (Crew Cab). No outside dimensions on the product page. Published volume: 0.25 ft3 per sub/chamber (total not printed). Mounting depth 4 1/4 in (optional 4 7/8 in; 5.00 in diameter magnet). Type: sealed. Subwoofers: one or two 8 in, round or square (cutout 7 1/8 in). Location: "Fits Behind Rear Seat"; firing direction not printed. Maker notes: "Some Subwoofers with oversized framing/magnets may not fit without modification." Price $203.99. Also sold by Super Crew Sound, the same catalogue under a second store name, as its Nissan Frontier Crew Cab 2004 & down Small Dual: https://supercrewsound.com/nissan-frontier-crew-cab-2004-down-small-dual-subwoofer-box/ . The figures in this page are Zenclosures'.
Sound Off Audio (2 x 8", other (sealed/ported not stated by the maker)) off-the-shelf
2000-04 FRONTIER CREW DUAL SUB BOX- large (SKU NISSAN CREW 04 DUAL - LG). Sound Off Audio states fit years 2000-04 (Crew; cab not otherwise stated). Published outside dimensions: Length 49 in (width, height and depth not printed). Published volume: air space .5 ft3 per sub (total not printed). Mounting depth 4.25 in. Subwoofers: two 8 in. Location: behind the seat; firing direction not printed. Maker notes: "This is our large version. We have a smaller version available." Price $239.
Sound Off Audio (2 x 8", other (sealed/ported not stated by the maker)) off-the-shelf
2000-2004 FRONTIER CREW DUAL SUB BOX- small (SKU NIS CRW 04 DUAL - SMALL). Sound Off Audio states fit years 2000-2004 (Crew). Published outside dimensions: Length 36 in (width, height and depth not printed). Published volume: air space 0.2 ft3 per sub (total not printed). Mounting depth 4.5 in. Subwoofers: two 8 in. Location: behind the rear seat on the driver side. Maker notes: "This box is small and does not fit the full length behind your seat." Price $199.
NET Audio (sealed) off-the-shelf
2001-2018 Nissan Frontier Sub Box Extended Cab Sealed (SKU NISFRO-01XCDF). NET Audio states fit years 2001-2018 (Extended Cab); no generation, King Cab or Desert Runner statement. Of the 1998-2004 model years here it covers 2001-2004, but the range spans two generations, so a fit for the first generation is not confirmed. Published outside dimensions: 37 x 15 x 15.875 in (as printed; NET Audio does not label the axes). Published volume: 2.46 ft3. Mounting depth 10.5 in. Type: sealed. Subwoofers: 1, 2 or 3 of 8, 10 or 12 in ("three 8s or 10s, two 12s"). Location: behind the front seats, firing down at the floor. Maker notes: "The rear seating will be unusable with this box since it sits where the seats would have folded down." Price $422.

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.