Free 3D-Printable Firewall Grommet — 2015–2021 WRX (OEM 690302540)
STL & CAD download for the 1" firewall grommet plug with cable pass-through
Free
Download a precision-fit 3D-printable replacement for the OEM Firewall Grommet Plug (1" / SKU 690302540) used on 2015–2021 Subaru WRX models. This updated design goes beyond a simple plug — it features a 0.2" (5 mm) pass-through hole for electrical wiring and a side-entry slit so you can feed wires through without disconnecting bulky connectors.
Designed to match OEM fitment while adding builder-friendly functionality, the grommet is optimized for 3D printing and comes with recommended print settings. Offered as a free digital file for DIYers and shops — and if you’d like finished parts, I can run limited production batches on request.
Free digital download (STL + 3MF included)
Direct replacement for OEM Firewall Grommet Plug — 1" diameter (SKU 690302540)
Includes 0.2" (5 mm) pass-through hole for wiring
Features a side slit design — slide in cables without removing connectors
Optimized for flexible TPU
Print-friendly orientation and minimal support required
Subaru WRX (2015-2021)
Subaru BRZ (2013-2025)
Forester (1998–2021)
Impreza (1993–2021) — including WRX/STI trims
Legacy (1990–2021)
Outback (1996–2021)
Subaru SVX (1995-1997)
FREE for personal and non-commercial use.
Redistribution of the raw files for sale or mass production is not allowed without written permission.
Want finished parts, bulk runs, or a commercial license? Contact Isaacs Design for pricing and terms.