US NA Miata Factory Trunk Lids: Shell, Latch, Stop-Lamp, Spoiler and Rack Identification

No formal lid supersession is asserted: NAY1-52-610E is the checked 1990-1997 service identity. N007-56-820 versus NB38-56-820, B092-62-877 versus B481-56-786, and NA01-51-580B versus NA12-51-580C are production/application branches, not replacement arrows. Spoiler color/service suffixes belong to the checked N001-V4-920G accessory family but are not represented as universally interchangeable paint parts. Black/chrome rack and hardware-kit identities are finish/content branches. N001-V4-923 is separate torsion-support equipment for the documented spoiler-plus-rack case, not a lid or latch supersession. No NA-to-NB chain or shared-hardware-based shell interchange is inferred.

Confirm the recipient VIN, US/LHD 1990-1997 NA model year and installed hardware before ordering. The checked lid service identity spans 1990-1997, but latch changes for 1996-1997, rubber cushion changes for 1994-1997 and the high-mount stop lamp changes for 1997. A bare lid does not imply hinges, torsion bars/holder, latch, striker, cylinder/key, weatherstrip, lamp/wiring, license lamps, emblems, spoiler, rack or fasteners. Shared hinges/striker remain documented on MIA-0052 and do not prove NA/NB shell interchange. Photograph the underside reinforcement and every lamp/spoiler/rack hole: seller terms such as factory spoiler, luggage rack, shaved or wingless do not prove genuine drilling, included studs/hardware or repaired-hole quality. The checked genuine accessory catalog separately identifies wing colors, rack finishes/hardware, and N001-V4-923 torsion support when spoiler and rack are combined; verify actual mass and balance instead of improvising. Inspect seams, folded edges, hinge pads, latch area, lamp/spoiler/rack holes and weatherstrip flange for rust, cracks, filler, welds, prior paint, water intrusion and freight damage. Support the lid and use trained help/current Mazda procedures around loaded torsion bars; never work beneath an unsupported lid or pry a spring from this guide.

A VIN- and stamping-confirmed genuine new or straight genuine used NAY1 lid is the primary factory path. NA-specific fiberglass/carbon skins, reproduction spoilers, clamp-on or drilled luggage racks and alternate torsion/gas-strut systems are not Mazda supersessions and require separate material, hinge/latch reinforcement, lamp, sealing, balance, drilling, load-rating, visibility and road-use review. Clamp-on does not mean damage-free, and a reproduction factory-style spoiler does not establish the genuine Mazda hole pattern. Replacement lamps, seals or springs do not repair a rusted, bent or poorly filled panel.

US/LHD 1990-1997 NA only. Match VIN/year, NAY1 lid identity, latch/cushion/lamp branch, underside and hole pattern, torsion equipment, condition and exact contents. Bare or complete does not prove hinges, latch/striker, lock, torsion bars, lamp/wiring, seal, spoiler, rack or hardware. Genuine spoiler/rack identities and N001-V4-923 support do not validate an unknown used drilling pattern. Shared hardware does not make NB lids interchangeable. Support the lid and loaded springs, inspect repairs/rust and normalize freight before comparing prices.

Supersede reviewed 13 unique research sources for this guide. 6 also appear above as a seller or official action and are not repeated here; 7 additional citations follow.

Research last verified 2026-07-29.

1. Mellens — 1990 1997 supplementOpen source
2. News mazdausa — Miata Restoration Parts List 2019Open source
3. Mazdamotorsports — SPEC MIATAOpen source
4. Carmanualsonline — mazda mx 5 1990 workshop manualOpen source
5. Manuals — feb0fc53ecf413ee1ff95d4f87552b3614394259ae20321b07e07743123b361bOpen source
6. Mazda Parts — body lid and componentsOpen source
7. Treasure Coast Miata — price list 06 presentOpen source