Subaru OEM Firewall Grommet Plug 1" Diameter WRX / STI / BRZ / Ascent / Crosstrek / Forester | 690302540

Product Fitment:

2019-2027 Subaru Ascent
2013-2020, 2022-2027 Subaru BRZ
2018-2023 Subaru Crosstrek
1998-2008, 2014-2025 Subaru Forester
1987-1989 Subaru GL
1993, 1995-2007, 2012-2023 Subaru Impreza
1988-1994 Subaru Justy
1990-2007, 2009-2025 Subaru Legacy
1990 Subaru Loyale
1996-2007, 2009-2026 Subaru Outback
1985-1989 Subaru RS
1988-1989 Subaru RX
2004-2007, 2015-2021 Subaru STI
1995-1997 Subaru SVX
2002-2007, 2015-2026 Subaru WRX
1985-1987 Subaru XT

The Genuine Subaru OEM Firewall Grommet Plug (Part #690302540) is an exact-fit rubber plug designed to seal 1-inch diameter openings in your Subaru's firewall. Purpose-built for factory-level fitment, this plug prevents exhaust fumes, moisture, road noise, and engine heat from entering the cabin — making it an essential component for any restoration, repair, or wiring-pass-through project on compatible Subaru vehicles.

Key Features & Benefits

• Genuine Subaru OEM Quality — Manufactured to exact factory specifications, ensuring a perfect seal and long-lasting durability without the guesswork of aftermarket alternatives.
• Exact 1" Diameter Fit — Designed specifically for 1-inch firewall openings; no trimming, adapting, or modification required.
• Seals Out Fumes, Moisture & Noise — Blocks exhaust gases, water intrusion, and road/engine noise from entering the passenger compartment, maintaining cabin comfort and safety.
• Heat & Vibration Resistant Rubber — Constructed from OEM-grade rubber compound that withstands engine bay heat cycles and vibration without cracking or shrinking over time.
• Factory Warranty Backed — Covered under Subaru's genuine parts warranty for peace of mind.
• Snap-In Installation — Simple press-fit design installs in seconds with no tools required for most applications.

What's Included

• 1x Genuine Subaru Firewall Grommet Plug (1" Diameter)

Specifications

Installation

This grommet plug is designed for straightforward DIY installation. Simply align the plug with the 1-inch firewall opening and press firmly until it seats flush and snaps into place — no special tools required in most cases. For applications involving wiring pass-throughs, a slit version may be needed; consult your factory service manual. If you are unsure of the correct plug for your specific firewall location, reference your Subaru parts diagram by VIN at parts.subaru.com or consult a Subaru-certified technician.