2018 Ford Expedition Speaker Sizes and Audio System Guide
2018 Ford Expedition Speaker Sizes and Audio System Guide
This page covers the factory speaker layout, common speaker locations, and upgrade notes for the 2018 Ford Expedition. Equipment can vary by trim, body style, or audio package, so the exact setup may differ from one vehicle to another. Factory amplifier details should be verified by trim and audio package, and selected audio systems may also include tweeters, a center channel, or a subwoofer if equipped.
Data verified by Nick Marchenko, PhD
Speaker Size Chart – 2018 Ford Expedition
Use this table as the main reference. Fitment depends on trim, factory audio package, mounting depth, and adapter availability.
| Location | Type | Factory Size | Note |
|---|---|---|---|
| Front Pillar | Tweeter | 1 inch | if equipped |
| Front Door | Mid-Range | 6.75 inch | |
| Front Door | Full-Range | 6.75 inch | |
| Rear Door | Mid-Range | 6.75 inch | |
| Rear Door | Full-Range | 6.75 inch | |
| Far-Rear Side Panels | Subwoofer | 10 inch | if equipped |
| Rear Pillar | Tweeter | 2.75 inch | if equipped |
| Center Dash | Center Channel | 3.5 inch | if equipped |
| Upper Front Door | Tweeter | 1 inch | if equipped |
| Upper Rear Door | Tweeter | 1 inch | if equipped |
Generic speaker location diagram. The table above shows the specific factory sizes for this vehicle. Exact location details may vary by body style and trim.
Speaker Count by Trim – 2018 Ford Expedition
Speaker count and audio equipment vary by trim and factory audio package. This table lists known configurations from our database.
| Trim | Speakers | Amplifier | Radio | Navigation |
|---|---|---|---|---|
| Limited 4dr 4x2 | 12 | std | AM/FM/HD/Satellite, seek-scan | ✓ |
| Limited 4dr 4x4 | 12 | std | AM/FM/HD/Satellite, seek-scan | ✓ |
| Platinum 4dr 4x2 | 12 | std | SiriusXM AM/FM/HD/Satellite, seek-scan | ✓ |
| Platinum 4dr 4x4 | 12 | std | SiriusXM AM/FM/HD/Satellite, seek-scan | ✓ |
| XLT 4dr 4x2 | 9 | – | SiriusXM AM/FM/Satellite, seek-scan | ✓ |
| XLT 4dr 4x4 | 9 | – | SiriusXM AM/FM/Satellite, seek-scan | ✓ |
Data sourced from manufacturer specifications. Verify with the window sticker or dealer before ordering audio components.
Vehicle and Audio System Specifications
This block helps identify the vehicle and its audio system configuration for fitment decisions.
What Speakers Fit the 2018 Ford Expedition?
Aftermarket fitment should start with the factory speaker locations listed above, but diameter alone is not enough. Check mounting depth, bracket fit, connector type, and whether the vehicle has a premium or factory-amplified audio system. The 2018 Ford Expedition uses a mix of 6.75-inch door speakers and several optional speaker positions, so the best replacement depends on the exact location and audio package. Optional tweeters, a center channel, and a subwoofer may be present on some systems.
Usually Safe Upgrades
- If your vehicle uses the front door speaker location, a 6.75-inch replacement is the main size to match.
- If your vehicle uses the rear door speaker location, a 6.75-inch replacement is the main size to match.
- If your vehicle uses the front pillar tweeter location, a 1-inch tweeter replacement may be the correct size if equipped.
- If your vehicle uses the rear pillar tweeter location, a 2.75-inch tweeter replacement may be the correct size if equipped.
- If your vehicle uses the far-rear side panel subwoofer location, a 10-inch subwoofer replacement may be the correct size if equipped.
Check Before Buying
- Verify the exact speaker location before ordering, since this vehicle can use different speaker types in different positions.
- Confirm whether the vehicle has the optional tweeter, center channel, or subwoofer locations before selecting parts.
- Check trim and audio package details, because speaker count and amplifier setup vary by trim.
- Measure mounting depth and inspect the factory connector style before buying replacement speakers.
Installation Notes
The 2018 Ford Expedition uses 6.75-inch speakers in the front and rear doors, with additional factory speaker locations that can vary by audio package. Panel removal should be done carefully so clips, trim pieces, and wiring connectors are not damaged. Before ordering speakers, check mounting depth and basket clearance, since the door openings may require shallow-depth models or mounting adapters. A speaker harness adapter is recommended to keep the factory wiring intact and make polarity verification easier during installation. If your vehicle has the factory subwoofer, confirm the enclosure size and connection style before planning an upgrade. Factory amplifier details should be verified by trim and audio package, since speaker count and system layout vary from 9 to 12 speakers. Test each speaker after installation to confirm balance, fade, and correct operation before reinstalling all trim panels. If equipped tweeters, center channel, or rear pillar speakers may also need matching adapters or careful fitment checks.
Moderate difficulty, since trim removal, wiring checks, and fitment verification are important for a clean installation.
Common Mistakes When Replacing Speakers
When shopping for audio upgrades on the 2018 Ford Expedition, the biggest errors usually come from assuming every trim and audio package uses the same speaker layout.
- Buying based only on the body-style label instead of checking actual speaker locations on the vehicle.
- Assuming the speaker count is the same on every trim, since the data shows 9 speakers on XLT models and 12 speakers on Limited and Platinum models.
- Skipping trim and audio package verification, even though the factory amplifier details should be checked by trim and audio package and can change the system layout.
- Ignoring optional equipment such as tweeters or the subwoofer if equipped, which can affect what is actually behind the panels.
- Choosing speakers without confirming mounting depth and connector style, which can cause fitment or wiring problems during installation.
- Reassembling the panels before testing the new speakers and system output, which can hide wiring mistakes or a bad connection.
Generation & Model Family
The 2018 Ford Expedition belongs to the Fourth generation (U553) (2018–2021) family. Nearby model years often share similar speaker locations and audio layouts, but exact fitment can vary by trim and audio package – verify before ordering.
Recommended Upgrade Path
The 2018 Ford Expedition uses a speaker layout that can vary by trim and audio package, with factory amplifier details that should be verified before planning upgrades. Most buyers will get the best results by starting with the front stage, then deciding whether to add bass, more output, or a cleaner factory-style refresh based on the system already in the vehicle.
| Goal | Best Upgrade Path | Why |
|---|---|---|
| Better clarity | Upgrade the front door speakers first, then add matching front tweeters if equipped, and consider the rear door speakers only after the front stage is sorted. | The front stage carries most of the detail you hear, so improving the front doors and tweeters if equipped usually gives the clearest jump in vocals, highs, and overall definition. |
| More bass | If the factory subwoofer is equipped, treat it as part of the system and add an aftermarket subwoofer setup for deeper low-end output. | A factory subwoofer can set the baseline, but a dedicated aftermarket bass upgrade usually delivers stronger low-frequency impact and more control over the sound. |
| Louder sound | Properly matched speakers and amplifier integration can improve volume and reduce distortion. Verify factory amp and premium system integration before adding aftermarket amplifiers. | Higher output works best when the speakers and amplification are matched correctly, and checking the existing audio package first helps avoid integration problems. |
| Budget improvement | Replace the most-used front door speakers first with same-size replacement speakers and the correct mounting brackets. | This gives the most noticeable improvement per dollar because the front doors handle a large share of everyday listening. |
| Factory look | Use same-size replacement speakers with the correct mounting brackets and harness adapters for a clean install that preserves the factory wiring and appearance. | This approach keeps the cabin looking original while still improving sound, and it helps avoid visible changes to the interior. |
Mounting Adapters and Wiring
The same nominal diameter does not guarantee a direct mount. Before ordering, confirm:
- Speaker depth: Aftermarket speakers often have larger magnets – measure available depth at each location.
- Mounting brackets: Door locations typically need a bracket or spacer to clear the window regulator and achieve correct mounting depth.
- Wiring harness adapters: Use a plug-and-play harness adapter to preserve factory wiring.
- Tweeter mounting cups: Replacing OEM tweeters may require surface-mount cups or brackets depending on the location.
- Factory or premium amplified systems: If the vehicle has a premium or factory-amplified audio system, confirm how the factory radio, amplifier, and speakers are connected before adding aftermarket amplifiers. Depending on the setup, a line output converter, DSP, integration harness, or professional installation may be needed.
- Connector type: Factory connectors vary by trim and model year – confirm compatibility before splicing or using an adapter.
Frequently Asked Questions
What size are the front door speakers in a 2018 Ford Expedition?
The front door speakers are 6.75 inches for both the mid-range and full-range positions. Tweeters may also be present if equipped, depending on the audio system.
What size are the rear door speakers?
The rear door speakers are also 6.75 inches for both the mid-range and full-range positions. Some audio setups may include tweeters if equipped.
Does the 2018 Ford Expedition have a factory subwoofer?
A 10-inch subwoofer is listed in the far-rear side panels if equipped. Availability can vary by trim and audio package, so it should be verified for the specific vehicle.
Do I need mounting adapters to replace the speakers?
Mounting adapters may be needed depending on the replacement speaker and the factory opening. The vehicle uses 6.75-inch door speaker locations, so fitment should be checked before buying parts.
Can I replace the speakers without replacing the radio?
Yes, speaker replacement can be done without changing the radio. The factory radio setup varies by trim, and the audio system may include different speaker counts and amplifier configurations.
Does the 2018 Ford Expedition have a factory amplifier?
Factory amplifier details should be verified by trim and audio package. The trim data shows standard amplification on Limited and Platinum models, while XLT listings do not show the same setup.