1999 Nissan Frontier Speaker Sizes and Audio System Guide
1999 Nissan Frontier Speaker Sizes and Audio System Guide
This page covers the factory speaker layout for the 1999 Nissan Frontier, including where the speakers are located and what to expect when planning an upgrade. Equipment can vary by trim, body style, or audio package, so speaker count and audio features may differ across versions. Use the fitment details here as a starting point and verify your specific truck before choosing replacement speakers or related audio parts.
Data verified by Nick Marchenko, PhD
Speaker Size Chart – 1999 Nissan Frontier
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 Door | Tweeter | 1 inch | if equipped |
| Front Door | Full-Range | 6.5 inch | |
| Rear | Full-Range | 5.25 inch |
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.
Recommended Speakers for the 1999 Nissan Frontier
Selected aftermarket speakers that match the factory sizes for this vehicle. Always verify mounting depth, connector type, and audio package before ordering.
6.5" Speakers
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Speaker Count by Trim – 1999 Nissan Frontier
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 |
|---|---|---|---|---|
| SE 4x2 King Cab 116.1 in. WB | 4 | – | – | – |
| SE-V6 4x4 King Cab 116.1 in. WB | 4 | – | – | – |
| XE 4x2 King Cab 116.1 in. WB | 4 | – | – | – |
| XE 4x4 King Cab 116.1 in. WB | 4 | – | – | – |
| XE 4x4 Regular Cab 104.3 in. WB | 4 | – | – | – |
| XE-V6 4x4 King Cab 116.1 in. WB | 4 | – | – | – |
| XE 4x2 Regular Cab 104.3 in. WB | 2 | – | – | – |
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 1999 Nissan Frontier?
Aftermarket fitment should start with the factory speaker locations listed for this 1999 Nissan Frontier, 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. Factory amplifier details should be verified by trim and audio package. Tweeters are listed only if equipped, so confirm the front door setup before ordering parts.
Usually Safe Upgrades
- If your vehicle uses the 6.5 inch front door full-range location, start by matching that opening size and then verify depth and mounting style.
- If your vehicle uses the 5.25 inch rear full-range location, look for speakers sized for that opening and confirm the basket clearance.
- If your vehicle has the 1 inch front door tweeter location, only consider tweeter replacements if that equipment is present.
- If your vehicle is one of the trims with a 2-speaker audio layout, confirm the exact speaker locations before choosing replacement parts.
Check Before Buying
- Measure the factory opening and mounting depth before ordering any speakers.
- Confirm whether your truck has the front door tweeter location, since it is listed as optional.
- Check the connector style and any factory brackets or adapters already in the vehicle.
- Verify the trim and audio package so you can account for possible factory amplifier differences.
- Use the speaker count on your trim as a guide, but inspect the vehicle because equipment can vary.
Installation Notes
The 1999 Nissan Frontier uses front door 6.5-inch full-range speakers and rear 5.25-inch full-range speakers, with a 1-inch front door tweeter if equipped. Speaker count can vary by trim, so it is smart to confirm the exact audio setup before ordering parts. Panel removal is usually the first step, and care is needed around clips, trim edges, and any factory wiring behind the door panels. Check speaker depth before installation, especially in the front doors, because clearance can vary with the mounting location and any adapter you use. Mounting adapters may be needed to match the factory openings, and harness adapters can help keep the wiring clean and reversible. Factory amplifier details should be verified by trim and audio package, since the available data does not confirm a single setup for every truck. If your vehicle has the factory subwoofer, confirm its location and wiring before planning the upgrade. Test each speaker before reassembling the panels to make sure polarity and balance are correct.
Moderate difficulty, since careful panel removal, wiring checks, and fitment verification are important.
Common Mistakes When Replacing Speakers
When shopping for a 1999 Nissan Frontier audio upgrade, the biggest problems usually come from assuming every truck is wired the same and skipping a few key fitment checks.
- Buying based only on the body-style label instead of checking actual speaker locations on the vehicle.
- Ignoring trim and audio package differences, since speaker count can range from 2 to 4 and radio or navigation equipment can vary by trim.
- Assuming the front door tweeter is always present, when the 1 inch tweeter is listed as if equipped.
- Skipping connector checks and trying to match speakers only by size, which can lead to wiring mismatches during installation.
- Overlooking mounting depth and available clearance behind the door or rear speaker openings before ordering new speakers.
- Reassembling the panels before testing the new speakers and radio operation, which can hide wiring or polarity problems until everything is back together.
Generation & Model Family
The 1999 Nissan Frontier belongs to the First generation (D22) (1999–2000) 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 1999 Nissan Frontier uses a simple factory speaker layout, and equipment can vary by trim and audio package. For buyers planning an upgrade, the best results usually start with the front stage, then move to bass and overall output if needed. Factory amplifier details should be verified by trim and audio package before choosing amplification.
| Goal | Best Upgrade Path | Why |
|---|---|---|
| Better clarity | Upgrade the front door speakers first, and if equipped, replace the front tweeters at the same time for cleaner highs and stronger midrange detail. | The front stage carries most of the vocals and detail, so improving it gives the biggest clarity gain without changing the whole system. |
| More bass | Add an aftermarket subwoofer to complement the factory speakers and fill in the low end. | A dedicated subwoofer adds the low-frequency impact that the factory speaker layout cannot fully provide on its own. |
| Louder sound | Properly matched speakers and amplifier integration can improve volume and reduce distortion. Verify factory amp or premium system integration before adding aftermarket amplifiers. | Higher output works best when speaker sensitivity, power handling, and system integration are matched correctly. |
| Budget improvement | Replace the most-used front door speakers first with same-size replacement speakers with correct mounting brackets. | This gives the most noticeable improvement for the least cost because the front speakers handle the main listening duties. |
| 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 quality. |
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 1999 Nissan Frontier?
The front door full-range speakers are 6.5 inches. Tweeters are 1 inch if equipped.
What size are the rear speakers in a 1999 Nissan Frontier?
The rear full-range speakers are 5.25 inches.
Does the 1999 Nissan Frontier have a factory subwoofer?
A factory subwoofer is not listed for this model year. If your truck has one, verify the audio package before ordering parts.
Do I need mounting adapters for speaker replacement?
Mounting adapters may be needed depending on the speaker location and the replacement speaker design. Check the vehicle’s speaker opening and depth before buying.
Can I replace the speakers without replacing the radio?
Yes, speakers can be replaced while keeping the factory radio. Radio details vary by trim, so confirm compatibility before choosing new speakers.
Does the 1999 Nissan Frontier have a factory amplifier?
Factory amplifier details should be verified by trim and audio package. The available trim data lists amplifier information as N/A.