Under Dash Cover on 986 Part 369721 Porsche: Complete Guide

The under dash cover on a Porsche 986 (Boxster and early Cayman) is a small but important interior trim piece. Part number 369721 refers specifically to the driver's side lower dash panel that sits beneath the steering column. This cover protects wiring and components from dust and accidental contact, and it also contributes to the cabin's finished appearance. If yours is missing, cracked, or broken, replacing it with the correct part is straightforward. This guide covers everything you need to know about the 986 under dash cover – what it does, how to identify it, and how to install a replacement.

What Is Part 369721?

The under dash cover (part 369721) is a molded plastic panel that attaches to the underside of the dashboard on the driver's side. It spans from the center console area to the left side of the footwell, covering the steering column's lower region. Its primary functions are:

• Protection: Shields wiring harnesses, fuses, and electronic modules from feet, debris, and moisture.
• Aesthetics: Provides a clean, finished look in the footwell; without it, bare wires and mounting brackets are visible.
• Sound insulation: Helps reduce road and engine noise entering the cabin.

This part is specific to the 986 generation (1997-2004 Boxster and 2006-2008 Cayman). It is not interchangeable with later 987 models, though the design is similar. The 369721 number is Porsche's original equipment (OE) reference.

Common Issues with the Under Dash Cover

Why It Gets Lost or Damaged

Many 986 owners find this cover missing when they buy the car used. Common reasons include:

• Previous repairs: Mechanics may remove it to access the fuse box or steering column and forget to reinstall it.
• Brittle plastic: Over time, the plastic becomes brittle, especially in hot climates. The mounting tabs or clips can break when the panel is removed.
• Aftermarket alarm or stereo installations: Installers often remove the cover to run wires and then discard it.
• Kick damage: Drivers may accidentally kick or bump the cover, cracking it.

If your cover is present but cracked, replacement is recommended to prevent further breakage and to maintain a tidy appearance.

How to Identify the Correct Part

Visual Inspection

The driver's side under dash cover has a distinct shape. It is roughly 18 inches wide and 8 inches deep, curving to match the dashboard contour. It has cutouts for the OBD-II port (usually on the left edge) and steering column adjustment lever. The color is a textured matte black that matches the rest of the lower dash. If you see a panel that fits that description, check the back for a stamped part number. Often, the 369721 number is embossed on the inside.

Compatibility with Model Years

Part 369721 fits all 986 Boxster models from 1997 to 2004 and 986 Cayman models from 2006 to 2008. It also fits the 987.1 Boxster and Cayman (2005-2008) but with minor differences – the mounting points are the same, but the 987 version (part 987-555-111-01) has an extra cutout for a footwell light. If you have a 987, verify before ordering.

To confirm compatibility, check your car's VIN or production date. The 369721 cover is correct for:

• All 986 Boxster (1997-2004)
• 986 Cayman S (2006-2008) – yes, the first generation Cayman is considered a 986 chassis; later models are 987.

If you have a 2009 or newer Boxster/Cayman, you need a different part.

Installation Tips

Tools Required

• Trim removal tools (plastic pry bars) – to avoid scratching nearby panels
• Torx T20 or T25 screwdriver (depending on fastener type)
• Flashlight
• Optional: new retaining clips (often sold separately)

Step-by-Step Replacement

1. Prepare the work area: Move the driver's seat all the way back and tilt the steering wheel down fully to maximize space.
2. Remove the old cover (if present): Pull down gently on the cover to release the pressure clips. It usually has three or four spring clips along the upper edge and one or two screws near the center. Use a plastic pry bar to carefully pop the clips, then remove any screws. Disconnect any wiring (e.g., OBD port harness) before fully removing the panel.
3. Transfer components: If your old cover had a footwell light or OBD port mount, transfer them to the new cover. These often snap into place.
4. Install the new cover: Align the new panel with the dashboard mounting points. Press firmly along the upper edge to seat the clips. Reinstall screws. Reconnect any wiring.
5. Test fit: Ensure the cover is secure and does not rattle. Check that the steering column adjustment lever moves freely and the OBD port is accessible.

Tip: Apply a small amount of silicone spray to the clips before installation – it prevents squeaks and makes future removal easier.

Where to Find This Part

Because this is a specific OE number, you have a few options for sourcing it:

• Porsche dealership: Order directly from a dealer parts department. Expect a price around $40-$60 new. Use the part number 99655511101 (note: that is for the 996/986, but 369721 is the same piece under a different numbering system). Always verify with the parts person.
• Online specialty retailers: Several Porsche aftermarket parts websites stock this cover. They often offer genuine Porsche parts at a discount. Look for “genuine Porsche under dash cover 369721” or “986 driver lower trim panel.”
• Salvage yards: If you're on a budget, a used cover from a dismantled 986 can be found for under $20. Check local Porsche wrecking yards or online salvage databases. Ensure the clips are intact.

Avoid generic “universal” covers – they won't fit properly and might block the OBD port.

Final Recommendation

If your Porsche 986 is missing its under dash cover, replacing it is a simple, inexpensive way to restore the interior's integrity. The part 369721 (or its superseded equivalents) is widely available and straightforward to install. For most owners, buying a genuine Porsche panel from an online retailer offers the best balance of quality and price. Just be sure to check the condition of the retaining clips and screws before starting the job. With a bit of patience, you can have that footwell looking factory-clean in under an hour.