1997-2003 Ford F-150 Subwoofer Box Fitment

1997-2003 Ford F-150 10th 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: Regular Cab, SuperCab (Extended Cab), SuperCrew (2001-2003)

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.

Regular Cab Unconfirmed

Location	behind the seat
Outer bounding box	Published box footprints are lower bounds on the cavity, not the cavity: NET Audio 1998-2003 Standard Cab sealed 42.5 x 8.5 x 14 in (as printed; axes not labelled), 1.1 ft3, 5.125 in mounting depth.
Known obstructions	Very limited depth behind the seat (NET Audio).

Supercab Likely

Location	under the rear seat
Outer bounding box	Published box footprints are lower bounds on the cavity, not the cavity: NET Audio 2000-2003 dual sealed 50.5 x 12 x 7.5 in (as printed; axes not labelled), 1.2 ft3 total, 5.25 in mounting depth; NET Audio 1997-1999 dual sealed 51.5 x 12 x 7 in (as printed), 1.22 ft3, 5.5 in; Ground Shaker 00-03 dual: Height 6 1/4", Length 50 1/4", Depth 13 1/4" (labelled by Ground Shaker), 1.18 ft3, 5 in; Ground Shaker 97-99 dual: Height 5 3/4", Length 52 1/4", Depth 13 3/4", 1.10 ft3, 5 in.
Known obstructions	Jack must be removed or relocated (NET Audio, Zenclosures); 1997-1999 seat design needs the middle brace removed (NET Audio).

Supercrew Unconfirmed

Location	under the rear seat
Outer bounding box	Published box footprints are lower bounds on the cavity, not the cavity: Ground Shaker 01-08 crew-cab dual: Front height 8 1/2", Rear height 5", Length 44", Depth 12 1/4" (labelled by Ground Shaker), 1.35 ft3, 4 3/4 in mounting depth. Zenclosures, Super Crew Sound and Sound Off Audio print no outside dimensions for their SuperCrew boxes.
Known obstructions	The rear seat "Folds Forward but Not Flat" with the box fitted (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 Ford or Metra source gives the door speaker size for these years (Metra's Ford install page lists 2015-2024 trucks only)
Adapter bracket needed	unconfirmed

Rear doors Unconfirmed

Adapter bracket needed	unconfirmed

Factory audio integration

Factory amp / premium audio	Ford's 2003 owner's guide names the radios (AM/FM, AM/FM with CD, AM/FM cassette with CD, "PREMIUM AM/FM STEREO/SINGLE CD RADIO", "PREMIUM IN-DASH SIX CD SOUND SYSTEM") but no speaker count, wattage or subwoofer.

Known integration products

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

Mounting locations

Regular Cab Likely

behind seat

NET Audio: "The 1997-2003 Ford F-150 Standard Cab has a very limited amount of space behind the seat". Ground Shaker, Zenclosures and Sound Off Audio sell dual-sub boxes for it. No maker or EPA cargo figure exists for a pickup.

Supercab Likely

under rear seat

Under-seat boxes from five makers. Jack removal or relocation is needed (NET Audio 2000-2003, Zenclosures). 1997-1999 cab: a lift kit is needed for some years (Super Crew Sound).

Supercrew Likely

under rear seat

Under-seat single and dual boxes from Zenclosures, Super Crew Sound and Sound Off Audio (2001-2003); Ground Shaker lists crew-cab boxes spanning 01-08.

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.

NET Audio (sealed) off-the-shelf
1997-1999 Ford F150 Extended Cab Sub Box Dual Sealed (SKU FORD150-97XCD). NET Audio states fit years 1997-1999 (Extended Cab). Of the 1997-2003 model years here it covers 1997-1999 only. The page body also calls it "the 1995-97 Ford F150 Extended Cab Sub Box", which conflicts with its own title. Published outside dimensions: 51.5 x 12 x 7 in (as printed; NET Audio does not label the axes). Published volume: 1.22 ft3 total ("two 10" subs with .6cuft of airspace each"). Mounting depth 5.5 in with steel plates, 4.75 in without. Type: sealed. Subwoofers: 1 or 2 of 8 or 10 in; the page says it is not made for 12s. Location: under the seat; firing direction not printed. Maker notes: "The 1997-99 Ford F-150 Extended Cab trucks have a very odd seat design"; "The middle brace will need to be removed but the seat will still rest on the new box". Price $413.
NET Audio (sealed) off-the-shelf
1998-2003 Ford F150 Standard Cab Sub Box Sealed (SKU FORD150-98SCD). NET Audio states fit years 1998-2003 (Standard Cab) in the title; the description says "1997-2003 Ford F-150 Standard Cab" and the category is 1997-2003 F150. Published outside dimensions: 42.5 x 8.5 x 14 in (as printed; NET Audio does not label the axes). Published volume: 1.1 ft3. Mounting depth 5.125 in with the steel bump. Type: sealed. Subwoofers: 1 or 2 of 8, 10 or 12 in ("two 8", two 10" or one 12""). Location: behind the seat; firing direction not printed. Maker notes: "The 1997-2003 Ford F-150 Standard Cab has a very limited amount of space behind the seat". Price $330.
NET Audio (sealed) off-the-shelf
2000-2003 Ford F150 Extended Cab Sub Box Single Sealed (SKU FORD150-00XCS). NET Audio states fit years 2000-2003 (Extended Cab). Of the 1997-2003 model years here it covers 2000-2003 only. Published outside dimensions: 32 x 12 x 7.5 in (as printed; NET Audio does not label the axes). Published volume: 0.83 ft3. Mounting depth 5.25 in standard, 6 in with box back extensions or metal backing plates. Type: sealed. Subwoofers: one 8 or 10 in; 12s do not fit. Location: under the rear seat on the passenger side. Maker notes: "This is a single sub box that is made to fit under the passenger side of the rear seat." Jack removal is required. Price $325.
NET Audio (ported) off-the-shelf
2000-2003 Ford F150 Extended Cab Sub Box Single Large Ported (SKU FORD150-00XCD-P). NET Audio states fit years 2000-2003 (Extended Cab). Of the 1997-2003 model years here it covers 2000-2003 only. Published outside dimensions: 50.5 x 12 x 7.5 in (as printed; NET Audio does not label the axes). Published volume: 1.2 ft3 total (0.6 per side). Mounting depth 5.25 in, or 6 in with the steel bump. Type: ported (port dimensions not printed; tuned "around 34-37hz"). Subwoofers: one 8 or 10 in. Location: under the seat. Maker notes: "Removal of the jack is necessary for the box to fit." 12s do not fit. Price $516.
NET Audio (sealed) off-the-shelf
2000-2003 Ford F150 Extended Cab Sub Box Dual Sealed (SKU FORD150-00XCD). NET Audio states fit years 2000-2003 (Extended Cab). Of the 1997-2003 model years here it covers 2000-2003 only. Published outside dimensions: 50.5 x 12 x 7.5 in (as printed; NET Audio does not label the axes). Published volume: 1.2 ft3 total (0.6 per side). Mounting depth 5.25 in, 6 in with box back extensions or metal backing plates. Type: sealed. Subwoofers: 1 or 2 of 8 or 10 in; 12s do not fit. Location: under the seat. Maker notes: "Removal of the jack is necessary for the box to fit." Price $433.
Zenclosures (sealed) off-the-shelf
FORD F150 STANDARD CAB 1997-2003 SUBWOOFER BOX (SKU fordF150STDCAB97). Zenclosures states fit years 1997-2003 (Standard Cab). No outside dimensions on the product page. Published volume: approx. 0.55 ft3 per sub/side (total not printed). Mounting depth 5.50 in (optional 6.125 in). Type: sealed. Subwoofers: two subs, 8, 10 or 12 in (cutouts 7 1/8, 9 1/8, 11 1/8 in). Location: forward firing, "Fits Along Cab Wall"; amp mounts between the subs. Maker notes: "Some Subwoofers with oversized framing/magnets may not fit without modification." Price $199.99.

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Zenclosures (sealed) off-the-shelf
Ford F150 Extended Cab / Super Cab 2000-2003 Single Subwoofer Box (SKU fordF150EXTCAB0003SINGLEUTS-1). Zenclosures states fit years 2000-2003 (Extended Cab / Super Cab). Of the 1997-2003 model years here it covers 2000-2003 only. No outside dimensions on the product page. Published volume: approx. 0.70 ft3 per sub/side. Mounting depth 5.25 in (optional 5.875 in). Type: sealed. Subwoofers: one 8 or 10 in. Location: down-firing, under the seat, 1.25 in clearance under the box. Maker notes: "Jack May Need To Be Relocated". Price $195.99.
Zenclosures (sealed) off-the-shelf
Ford F150 SuperCrew Crew Cab 2001-2003 Dual Subwoofer Box (SKU 0103scdual-1). Zenclosures states fit years 2001-2003 (SuperCrew). Of the 1997-2003 model years here it covers 2001-2003 only. No outside dimensions on the product page. Published volume: approx. 1.00 ft3 total, one chamber. Mounting depth 5.25 in (optional 5.875 in). Type: sealed. Subwoofers: two subs, 8 or 10 in (maximum sub diameter 12.50 in). Location: down-firing, under the seat. Maker notes: The page says the rear seat "Folds Forward but Not Flat". Price $237.99.
Super Crew Sound (other (sealed/ported not stated by the maker)) off-the-shelf
Ford F-150 Extended Cab / Super Cab 1997-1999 Dual Subwoofer Box (SKU 97F150ECUTSdual). Super Crew Sound states fit years 1997-1999 (Extended Cab / Super Cab; the year options are 1997, 1998, 1999A, 1999B). Of the 1997-2003 model years here it covers 1997-1999 only. No outside dimensions on the product page. Published volume: 0.70 ft3 per sub (total not printed). Mounting depth 5.25 in standard (5 7/8 in optional, +$25). Subwoofers: two subs, 8, 10 or 12 in. Location: subs fire down; location in the cab not printed. Maker notes: "The lift kit is ONLY needed for the 1997, 1998, and 1999A model years". Price $219.
Super Crew Sound (other (sealed/ported not stated by the maker)) off-the-shelf
Ford F-150 Supercrew Cab 2001-2003 Single Subwoofer Box (SKU 01F150SCrewUTSsingle). Super Crew Sound states fit years 2001-2003 (SuperCrew). Of the 1997-2003 model years here it covers 2001-2003 only. No outside dimensions on the product page. Published volume: air space .75 ft3. Mounting depth 5.25 in standard (5.875 in optional, +$25). Subwoofers: one subwoofer, 8, 10 or 12 in. Location: fires down; under the back seat on the driver side; 1 1/4 in clearance under the box. Maker notes: "No seat modification needed." Price $179.
Sound Off Audio (other (sealed/ported not stated by the maker)) off-the-shelf
DUAL SUB BOX 1997-2003 FORD F-150 REGULAR CAB TRUCK (SKU F150STD 97-03 DUAL). Sound Off Audio states fit years 1997-2003 (Regular Cab). No outside dimensions on the product page. Published volume: air space .65 ft3 per sub (total not printed). Mounting depth 5.75 in. Subwoofers: two subs, 8, 10 or 12 in (cutouts 7, 9 1/8, 11 1/8 in). Location: not printed. Maker notes: "If using 12 inch subs, ADD DEPTH MODIFICATION." Price $239.
Sound Off Audio (other (sealed/ported not stated by the maker)) off-the-shelf
Single Sub Box 1997-2003 Ford F-150 Super Cab (Ext Cab) (SKU F150 97-03 EC SINGLE). Sound Off Audio states fit years 1997-2003 (Super Cab / Ext Cab). No outside dimensions on the product page. Published volume: air space 0.7 ft3 per sub. Mounting depth 5.25 in. Subwoofers: one 8 or 10 in. Location: sub fires down; 1 1/4 in clearance under the box. Maker notes: Hand built, 3-10+ business days. Price $189.
Sound Off Audio (other (sealed/ported not stated by the maker)) off-the-shelf
SINGLE SUB BOX 2001-2003 FORD F-150 SUPERCREW (SKU F150 SCREW 01-03 SINGLE UTS). Sound Off Audio states fit years 2001-2003 (SuperCrew). Of the 1997-2003 model years here it covers 2001-2003 only. No outside dimensions on the product page. Published volume: air space .70 ft3 (no unit printed). Mounting depth 5.25 in. Subwoofers: one 8 or 10 in. Location: "underneath the backseat on the driver's side". Maker notes: "Constructed with 5/8 MDF." Price $189.
Ground Shaker (2 x 10", sealed) off-the-shelf
BLACK 10" DUAL SEALED SUB BOX, FITS 00-03 FORD F-150 EXT-CAB (SKU GS-NF150210B). Ground Shaker states fit years 00-03 (Ext-Cab). Of the 1997-2003 model years here it covers 2000-2003 only. Published outside dimensions: Height 6 1/4", Length 50 1/4", Depth 13 1/4" (labelled by Ground Shaker; no top/bottom depth printed). Published volume: 1.18 ft3 air volume, 2 individual chambers. Mounting depth 5 in. Type: sealed. Subwoofers: two 10 in (cutout 9 1/4 in). Location: under the rear seat, upward firing. Maker notes: "SEALED WITH HIGH QUALITY TITEBOND SILICONE". Price $315.
Ground Shaker (2 x 10", sealed) off-the-shelf
BLACK 10" DUAL SEALED SUB BOX, FITS 97-99 FORD F-150 EXT-CAB (SKU GS-WF150210B). Ground Shaker states fit years 97-99 (Ext-Cab). Of the 1997-2003 model years here it covers 1997-1999 only. Published outside dimensions: Height 5 3/4", Length 52 1/4", Depth 13 3/4" (labelled by Ground Shaker; no top/bottom depth printed). Published volume: 1.10 ft3 air volume (0.55 ft3 per subwoofer). Mounting depth 5 in. Type: sealed. Subwoofers: two 10 in (cutout 10 1/4 in), 2 individual chambers. Location: under the rear seat, upward firing. Maker notes: "FITS UNDER REAR SEAT". Price $305.
Ground Shaker (2 x 10", sealed) off-the-shelf
BLACK 10" DUAL SEALED SUB BOX, FITS 01-08 FORD F-150 CREW-CAB (SKU GS-MF150210B). Ground Shaker states fit years 01-08 (Crew-Cab); the URL slug says 2001-2003. Of the 1997-2003 model years here it covers 2001-2003; it spans into the 2004-2008 generation. Published outside dimensions: Front height 8 1/2", Rear height 5", Length 44", Depth 12 1/4" (labelled by Ground Shaker); weight 29 lbs (labelled by Ground Shaker). Published volume: 1.35 ft3 total air volume. Mounting depth 4 3/4 in (cutout 9 1/4 in). Type: sealed. Subwoofers: two 10 in. Location: under the rear seat, upward firing. Maker notes: "SEALED WITH HIGH QUALITY SILICONE". Price $305.

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.