Nissan’s sheet lays out how to install a rear spoiler on a 370Z as one tight sequence: hatch liner out, template taped and aligned, holes drilled, bare metal sealed, surface wiped with alcohol, then the spoiler bolted and taped down.
Two numbers carry more weight than anything else. The stud nuts torque to 3.8 N·m with a 10 mm socket, and the air needs to be 15°C / 60°F or warmer for the tape and adhesive to bond.
Installing A 370Z Rear Spoiler: The Order That Prevents Rework
Nissan’s published procedure removes the hatch lid liner, drills at a taped template, and torques the fasteners to spec. Work in this order; jumping ahead means doing a step twice.
- Open the hatch and strip the inner lid liner. Pull the push pins and bumpers holding it and set the liner aside.
- Tape the drill template to the hatch lid and check alignment on both sides before you mark anything. This step decides whether the spoiler sits straight.
- Deburr every hole, then vacuum the metal shavings out of the lid.
- Brush rust preventative onto the bare metal edges around each hole.
- Wipe the mounting surface with 90% or higher alcohol and let it dry.
- Set the spoiler in place without pressing the tape down yet. Check the gaps on both sides, then press the clips and tape home.
- Tighten the two M6 nuts on the studs with a 10 mm socket to 3.8 N·m.
The Nissan rear spoiler installation instructions spell out the hole positions, punch marks, and hardware counts if you want them in hand while you drill. When the job goes right, the spoiler sits flush with even gaps and the hatch still opens without dragging.
| Part Or Stage | Specification | Why It Matters |
|---|---|---|
| Pilot holes | Eight 1/8-inch holes at the punch marks | Keeps the step drill from wandering |
| Mounting holes | One 1/4-inch and five 5/16-inch holes | Matches the spoiler studs and clips |
| Stud nuts | Two M6 nuts, 10 mm socket, 3.8 N·m | Snug without over-tightening the studs |
| Ambient temperature | 15°C / 60°F or above | Tape and adhesive need warmth to bond |
| Fresh paint | Let it dry and age 24 hours | Adhesive pulls on uncured paint |
| Water exposure | No wash or rain for 24 hours | The bond has not cured yet |
| Hatch handling | Never pull the hatch by the spoiler | Nissan’s owner’s manual warns against it |
Does Temperature Change How The Spoiler Bonds?
Three timing rules ride along:
- If the hatch was recently painted, let the paint dry and age 24 hours before the spoiler goes near it.
- Plan the install for a dry day — no rain or wash bay in the first 24 hours.
- Warm beats barely warm. A heated garage in January beats a 61-degree driveway.
Where 370Z Spoiler Installs Go Wrong
Almost every failed install traces to the same shortcuts: skipping template alignment, drilling before test-fitting, leaving shavings in the lid, or rushing into a wash bay. Nissan’s owner’s manual adds an easy-to-forget handling rule — never use the rear spoiler as a handle to open or close the hatch.
Aftermarket parts change the drill question. Spoilers built for the 2009–2021 Nissan 370Z Z34 platform can mount with double-sided tape or adhesive sealant and no drilling, though only that product design works that way. Some wing-style spoilers also need the factory lip spoiler removed first, so check the listing before assuming the old piece stays on. If you are still deciding, a tested roundup of 370Z wing spoilers compares tape-mount and drill-mount options.
FAQs
Can An Aftermarket Spoiler Go On Without Drilling?
Sometimes. Spoilers designed for the 2009–2021 Z34 platform can attach with double-sided tape or adhesive sealant and leave the hatch untouched. That shortcut belongs to that product design, not to spoilers as a group. Wing-style spoilers that bolt through the hatch still need hardware, and some require pulling the factory lip spoiler off first.
What Torque Do The Spoiler Nuts Need?
Two M6 nuts on the spoiler studs, tightened with a 10 mm socket to 3.8 N·m. That is a light, even pull, so use a torque wrench rather than feel. Going tighter does not hold the spoiler better and is how studs and threads get damaged.
How Long Before I Can Wash The Car?
Give it 24 hours. Nissan’s sheet says to avoid washing the vehicle or exposing it to a wet environment for 24 hours after installation, since the tape and sealant are still curing. Rain counts, so check the forecast before you start drilling.
References & Sources
- Nissan. “Rear Spoiler Installation Instructions” Supports the hole sizes, the two M6 nuts at 3.8 N·m, the 60°F minimum, and the 24-hour paint and water rules.
Meta description: How to install a rear spoiler on a 370Z? Get the drill sizes, the 3.8 N·m torque spec, and the 60°F rule that keeps the tape from lifting.