The Complete Guide to a WRX STI Type RA Rear Left Door Panel Swap

If you’re reading this, you’re likely staring at a cracked, rattling, or stained door card on your prized Subaru WRX STI Type RA, or perhaps you’ve sourced a pristine replacement and are ready to upgrade. You’ve come to the right place. Performing a WRX STI Type RA rear left door panel swap is a quintessential DIY task for any enthusiast, but the limited-production RA trim adds unique layers of complexity and value. With only 500 examples of the 2018 Type RA released in the United States, each interior component, especially the signature Alcantara-trimmed door cards, is a piece of performance history. This guide will walk you through the entire process, from understanding the RA’s unique pedigree to the final satisfying click of the last clip, ensuring you protect your investment and execute a flawless door panel swap.

Understanding the Type RA: More Than Just Badges

The WRX STI Type RA (Record Attempt) is not a simple appearance package. Born from Subaru’s record-breaking runs at the Nürburgring, it is a factory-lightened, sharpened variant of the already potent STI. While much attention goes to the titanium exhaust, revised suspension, and engine tweaks, the interior received significant, weight-saving changes. The standard STI’s heavier leather and complex door trim were replaced with lighter, Alcantara on the RA door panels, matching the suede-like upholstery on the seats. The door pull is a simple red webbing strap, a direct homage to rally car weight savings. This means a WRX STI Type RA rear left door panel swap isn't just replacing a part; it's handling a piece of a limited-edition car's identity. The part numbers are often different from the standard VA chassis STI, and the market for undamaged replacements is small and premium.

Why Perform a Door Panel Swap? Common Reasons

Before turning a single screw, understand your "why." This dictates your approach, budget, and caution level.

• Damage Repair: The most common reason. A careless passenger, a shifting cargo item, or simple wear can crack the hard plastic base, tear the Alcantara, or break the door pull handle mechanism.
• Rattle Elimination: A persistent buzz or rattle from the door can ruin the driving experience. The fix often involves removing the panel to secure loose wiring, speakers, or the window regulator.
• Speaker Upgrade or Replacement: The RA’s standard audio leaves room for improvement. A replace door speaker STI RA project requires panel removal.
• Customization: Some owners seek to retrim panels in different materials or colors.
• Restoration or Part Salvage: For those rebuilding a RA or converting a standard STI, sourcing Type RA specific interior parts is a known challenge.

Tools and Materials: The Right Gear for the Job

Using the correct tools is 80% of success in VA chassis door panel replacement. Using a screwdriver as a pry tool is a one-way ticket to broken clips and scratched trim.

Essential Tool List

• Non-Marring Trim Removal Tool Set: This is your most important tool. Nylon pry tools from brands like iFixit or OEM-specific sets are perfect. They are the definitive Subaru door panel removal tool.
• Phillips Head Screwdriver (#2 size).
• Socket Set & Ratchet (10mm is most common).
• Needle-Nose Pliers or Forceps: For retrieving dropped clips.
• Panel Clip Remover Pliers (Optional but helpful).
• Trim Fastener Retainer Set: You will break some clips. Having a bag of door panel clips WRX STI replacements is non-negotiable. Part number 909140008 for the white push-type clips is a good generic match, but confirm for your model year.
• Flashlight or Headlamp.
• Soft Blanket or Microfiber Towels: To lay the door panel on once removed, protecting the Alcantara.
• Painters Tape: For protecting the door’s painted edges.

Preparation and Safety: Setting the Stage

Work in a clean, well-lit area. Disconnect the vehicle's negative battery terminal as a safety precaution before working near any electrical components like the window switch. This prevents short circuits and allows you to put the window in the ideal position (fully up) without power. Roll the window all the way up. Use painters tape on the door’s painted edge and the fender to prevent any accidental tool slips from marring the paint. Organize your tools and keep a small container for screws and clips. Patience is not just a virtue; it’s a requirement.

Step-by-Step: Removing the Rear Left Door Panel

This procedure is for the VA chassis (2015-2021 WRX/STI), with specific notes for the Type RA. The process for the rear left door panel is symmetrical to the right side.

Step 1: Remove the Door Handle Trim and Switch Panel

Open the door. Locate the small rectangular trim piece just forward of the interior door handle. Gently pry it outward using your trim tool. It is held by two clips. Underneath, you will find a single Phillips screw. Remove it. Next, locate the power window/lock switch panel. On the RA, this is a sleek, dark trim piece. Insert your trim tool at the bottom or rear edge and carefully work it upwards until the entire switch panel assembly pops free. Do not pull it away yet.

Step 2: Disconnect the Electrical Connectors

This is a crucial step in the how to remove rear door panel WRX STI process. With the switch panel loose, you will see one or two electrical connectors on the back. To disconnect the window switch and speaker (if equipped with premium audio), locate the locking tab on each connector. Press the tab down or in (varies by connector) and pull the connector straight off. Do not pull on the wires. Set the switch panel aside safely.

Step 3: Remove the Door Pull Handle Cover and Bolt

The Type RA uses a red webbing pull strap. The plastic cover around its base must be removed. Look for a small slot or seam. Gently pry the cover off to reveal a 10mm bolt securing the lower portion of the door pull mechanism. Remove this bolt with your socket.

Step 4: Remove the Child Lock Cover and Screw

At the rear edge of the door, near the latch, is a small rectangular cover for the manual child safety lock. This is the rear door child lock cover. Use a small flathead or your trim tool to pop it off. Behind it, you will find another Phillips screw. Remove it.

Step 5: Pry the Door Panel from its Clips

All fasteners are now removed. The panel is held on by a series of plastic rivets door panel clips around its perimeter. Starting at the bottom corner, wedge your non-marring trim tool between the panel and the metal door skin. Apply steady, firm pressure until you hear a *pop* the clip releases. Work your way along the bottom, then up the rear edge, then the front edge, and finally along the top. Be especially careful at the top where the panel tucks under the window seal. The goal is to separate the panel from the door, not to lever it outward violently.

Step 6: Lift and Disconnect Remaining Wires

Once all clips are free, lift the entire door card upward and away from the window channel. It is now hanging by any remaining wires, typically the wiring harness for the door-mounted tweeter (if applicable). Support the panel with one hand, find the connector(s), depress the lock, and disconnect. The panel is now free. Immediately place it on your soft blanket, Alcantara side up.

Step-by-Step: Installing the New or Reconditioned Panel

Installation is essentially the reverse of removal, but with critical finesse points.

1. Pre-Stage the Panel: Before lifting the new panel, reconnect any electrical connectors you need to (like the tweeter) to the panel itself. Route the wires neatly. Ensure all door panel clips WRX STI are installed in their correct locations on the back of the panel. Replace every single one you removed or damaged with a new clip.
2. Align and Engage: Carefully lift the panel and hook the top edge into the window channel first. This is the most delicate part. Ensure it is seated properly along the entire top length.
3. Reconnect Main Harness: Reconnect the main switch panel wiring harness.
4. Secure Clips: Starting at the top, press firmly along the edges to snap the clips into their holes in the metal door. Work your way around, using the palm of your hand and applying even pressure. You should hear a series of solid, satisfying clicks. Do not use a hammer or excessive force.
5. Reinstall All Screws and Bolts: Replace the 10mm bolt at the door pull, the Phillips screw behind the child lock cover, and the Phillips screw behind the small rectangular trim piece.
6. Reattach Trim Pieces: Snap the switch panel and the small rectangular trim piece back into place. Ensure they are flush and secure.
7. Reconnect Battery and Test: Reconnect the vehicle's battery. Before closing the door, test all functions: power window operation, door locks, and if applicable, the speaker. This is the time to troubleshoot if your window doesn't work after reinstalling the door panel (likely a disconnected connector).

Troubleshooting Common Issues

RA-Specific Considerations and Part Numbers

This is where the WRX STI Type RA rear left door panel swap diverges from a standard STI job. According to parts catalogs and community verification on forums like NASIOC, the RA’s door cards have distinct part numbers due to the Alcantara insert, red stitching, and webbing pull strap. While a standard STI panel might physically fit, it will not match the interior. The part number for the WRX STI Type RA rear left hand door panel (for the 2018 model year) is reported to be 92111VA320. However, part numbers for the WRX STI Type RA interior trim can vary by model year and color, and you must always verify using your VIN with a dealership parts department or a trusted vendor like Genuine Subie Parts.

What's the difference between a standard STI door panel and a Type RA door panel? The RA panel substitutes leather and heavier plastics for a lighter-weight hardboard base with a signature Alcantara (suede-like) insert in the armrest area, red contrast stitching, and a functional red webbing pull strap instead of a solid handle. This contributes to the car's weight-saving ethos.

Are the door panels on the Type RA lighter than the standard STI? Yes, this is a documented fact of the RA's design. The use of Alcantara and simplified components reduces unsprung and overall vehicle mass, aligning with its performance mission.

Is the Alcantara on the RA door panels difficult to clean or maintain? It requires specific care. Use a soft, dry microfiber cloth for dust. For stains, use a dedicated Alcantara cleaner and a soft bristle brush. Never use all-purpose cleaners or harsh chemicals, as they can damage the nap and color.

Frequently Asked Questions (FAQs)

What tools do I need to remove a WRX STI door panel?

You need a non-marring trim tool set, a #2 Phillips screwdriver, a 10mm socket, needle-nose pliers, and a bag of replacement plastic clips. A panel clip remover pliers is optional but helpful.

How do I disconnect the window switch and speaker when removing the door card?

Once the switch panel is pried loose, look at the back of it. You will see rectangular plastic connectors with a locking tab. Press this tab down (or inward, depending on design) and pull the connector body straight off. Never pull the wires.

Where can I buy a replacement WRX STI Type RA door panel?

Due to rarity, check Subaru dealerships with your VIN, specialized salvage yards that handle performance cars, and online marketplaces like the Genuine Subie Parts inventory for new old stock. Forum classifieds (NASIOC, IWSTI) are also key resources.

Can I swap my standard STI door panels for Type RA door panels?

Physically, yes, as they share the same VA chassis mounting points. However, it is a direct part swap. You will need to source the complete RA panel set (front and rear). The electrical connectors for switches are typically the same. This is a popular STI door panel swap DIY upgrade for enthusiasts.

How long does it take to swap a door panel on a WRX STI?

For a first-timer, budgeting 1.5 to 2 hours per door is wise, allowing for careful prying and wire management. An experienced DIYer can complete a VA WRX door card removal and reinstallation in under 45 minutes.

What should I do if my window doesn't work after reinstalling the door panel?

First, check the simple things: Is the battery connected? Did you reconnect the main switch connector? The most likely cause is that the connector for the window switch is not fully seated. Remove the switch panel trim and check the connection.

How do you remove the door pull handle on a VA chassis WRX?

For the standard STI, the handle is part of a larger assembly. For the RA with its webbing strap, you remove a plastic cover to reveal a 10mm bolt. For a door pull handle replacement on a standard model, the entire assembly is typically secured from behind the door panel once the card is removed.

Are there any pre-cut speaker hole templates in the STI RA door panel?

The door card has a molded grill area for the speaker. For aftermarket speaker installation, you generally mount the new speaker to the metal door frame, not the plastic panel itself. The panel then fits over it. Check if your specific aftermarket speaker requires any modification to the plastic backing or grill.

Recommended Resources and Next Steps

Congratulations on completing your WRX STI Type RA rear left door panel swap. You’ve not only fixed or upgraded your car but also deepened your connection with a special vehicle. The skills you’ve learned here apply to nearly any modern car’s interior trim.

For further reading and to source parts for your next project, explore these resources:

• Genuine Subie Parts Interior Catalog Your source for OEM and hard-to-find trim pieces.
• WRX STI Alpha Series Aluminum Radiator Guide 2025 The next logical performance upgrade after interior work.
• How to Diagnose a Bad Subaru Radiator Fan Keep your cooling system in check.
• Community Forums: NASIOC and IWSTI have invaluable threads with photos and user experiences for every imaginable Subaru procedure.