I built this because every time I wired a Holley Terminator X or Sniper setup, I ran into the same problem — that little 3.5-inch handheld display never had a clean home. Most mounts looked like afterthoughts, or worse, like something from the clearance bin at an auto-parts store. I wanted a way to keep the screen visible when tuning and invisible when parked at a show. That’s where the Solid Spark 3D Under-Dash Screen Mount came into play.
This mount is designed specifically for Holley’s 3.5-inch screens (part #553-108 and #553-202) that come with the Holley Terminator X and Holley Sniper EFI kits. It’s the perfect fit for hot rods, drag-and-drive cars, off-road builds, and even modern cars running Holley systems.
Quick adjustment — no tools, no drama
The tension-knob hinge lets you move the display exactly where you want it — out to view while tuning or tucked under the dash for a show-ready interior. Flip it up and it disappears. Flip it down and you’ve got instant access to your EFI data.
You can also pop the screen off the mount using the Velcro interface to hold it in your hand for adjustments or idle tuning, then slap it right back in place when you’re done. There’s even a built-in cord hook on the back to keep the cable tidy instead of draped across your pedals.
Clean install in minutes
Installation takes about 10–15 minutes. Mark the holes (roughly 2.95 inches center-to-center), drill, and secure with the included screws, washers, and lock washers — or skip drilling entirely and use double-sided tape if you prefer. Once mounted, reinstall the hinge bolt, stick the Velcro, and you’re done.
Made from tough ABS plastic
Each mount is made in-house on our 3D printers using ABS, a material chosen for its strength, heat resistance, and durability in vehicle interiors. It’s the same kind of plastic used in automotive trim and interior panels, so it can handle the heat from a summer dash without warping.
Thoughtful details throughout
Every kit ships with all the hardware you need, made and packed right here in the USA. Currently available in a clean black finish that blends seamlessly under any dash.
Value without compromise
At $24.99, it costs a fraction of most mounts that do half as much. You’re not just buying a part — you’re buying something designed by a builder who uses the same gear you do. I keep them stocked and can usually ship same or next day.
Bring some order to your dash
If you’re running a Holley Terminator X or Sniper EFI, stop letting that handheld dangle by the cord or clutter up your console. Mount it once, cleanly, and make it disappear when you want to show off your interior.
Get your Solid Spark 3D Under-Dash Mount today and give your Holley setup the stealth look it deserves.