What size speakers are in a 2008 4runner?
Front and rear doors typically use 6.5-inch speakers, with small tweeters in the dash area. Sizes can vary slightly by trim or premium audio packages, so check your exact vehicle if you’re upgrading.
Factory setup by location
The following sizes are what you’re most likely to encounter in a 2008 4Runner across common trims. If your vehicle has a specific optional audio package, there may be slight differences, but the basic footprint remains consistent for most models.
Front doors
Speaker size commonly installed in the front doors is:
- 6.5 inches (approximately 165 mm) diameter for the woofer/midrange.
In most configurations, the front door houses a 6.5" speaker, often with a separate tweeter mounted in the upper dash or A-pillar area.
Rear doors
Speaker size commonly installed in the rear doors is:
- 6.5 inches (approximately 165 mm) diameter for the woofer/midrange.
Rear doors typically mirror the front doors in size, though some base trims may use the same 6.5" footprint with a different mounting depth.
Dashboard/tweeters
Tweeter sizes and placement can vary by trim, but these are the typical configurations:
- Tweeter diameter usually around 0.75–1 inch (roughly 19–25 mm) in the dash or A-pillar area.
Most 2008 4Runners include some form of a tweeter in the instrument panel area to handle high frequencies, paired with the 6.5" woofers in the doors.
Trim and package variations
Different audio packages offered for the 2008 4Runner can influence speaker quality and placements, though the core sizes remain largely the same. The JBL premium audio option, for example, typically retains 6.5" door speakers and separate tweeters, with improvements in speaker components rather than a change in the fundamental sizes.
JBL Premium Audio (where equipped)
Common characteristics in JBL-equipped models include:
- 6.5" front-door speakers
- 6.5" rear-door speakers
- Front dash/tweeter pair and possibly a center channel in some markets
Even with JBL, the primary woofer sizes stay at 6.5" in the doors; the premium package focuses on speaker quality, enclosure design, and added midrange/center-channel options rather than changing the standard woofer diameter.
Base and SR5/Limited trims
For base, SR5, and Limited trims without the premium audio upgrade, sizes typically remain:
- 6.5" door woofers/mids
- Standard dash tweeters (approximately 0.75–1 inch)
If you’re upgrading, these sizes represent the most common starting point for aftermarket replacements.
How to verify the exact size in your vehicle
To confirm your specific model’s speaker sizes, use these practical steps:
- Consult the owner’s manual or the factory audio brochure for your exact trim and year.
- Carefully remove a door panel to visually inspect the speaker diameter or read any stamped size on the magnet assembly.
- Measure the opening with a tape measure if you’re replacing the woofer, noting mounting depth and bolt-hole pattern.
- Check the Toyota parts diagrams or your VIN-specific service/repair manual for the exact part numbers and dimensions.
- When in doubt, visit a professional installer or reference an official Toyota parts catalog to confirm compatibility for your VIN.
Verifying in this way ensures you choose the correct 6.5" replacements and compatible tweeter/mounting adapters for your exact vehicle configuration.
Aftermarket considerations
When upgrading, you’ll most often pursue 6.5" woofers for the front and rear doors, paired with 0.75" to 1" tweeters. Depth and mounting brackets can vary, so plan for possible spacers or adapters if your chosen speakers have deeper housings.
- Front door: 6.5" woofer replacement
- Rear door: 6.5" woofer replacement
- Tweeters: 0.75"–1" replacement in dash/A-pillars
Be mindful of impedance compatibility (most car speakers are 4-ohm in this era) and ensure your head unit or amplifier is compatible with the replacements. Proper mounting hardware and replacements will help preserve sound quality and fitment.
Summary
For a 2008 Toyota 4Runner, the typical factory footprint features 6.5-inch speakers in both the front and rear doors, with small dash or A-pillar tweeters around 0.75–1 inch. Variations exist based on trim and audio packages, notably with JBL premium systems. To upgrade confidently, verify your exact vehicle’s specs by consulting manuals, parts diagrams, or a technician, then choose 6.5" woofers and appropriate tweeters with proper mounting depth and impedance compatibility.
