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2003 Lexus SC430

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Overview Upgrade your Stereo Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Speakers & Speaker Installation for 2003 Lexus SC430

Find speakers to upgrade your sound and fit in the factory speaker location for your SC430.  After you choose your speakers, we'll help you find speaker adapters, speaker harnesses and other accessories for installation.

All car speakers

Shop All Speaker Locations in the Vehicle

See all speakers that fit, regardless of location.

Behind Seat Speakers

Behind Seat Speakers

Speakers for behind the seat

Lower Front Door

Lower Front Door Speakers

Speakers for your lower front door.

Rear Seat Side Panel Speakers

Rear Seat Side Panel Speakers

Speakers for your rear seat side panel.

Upper Front Door Speakers

Upper Front Door Speakers

Speakers for your upper front door.

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Dads & Grads Sale

Free Gear / Open-Box Deals / Huge Discounts up to 40% off Car / Marine / ATV Audio

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Speaker Location
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
Design
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
  Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
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NVX VSP525KIT

750W Peak (250W RMS) 5.25" V-Series 2 Way Component Car Speakers

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NVX VSP525KIT

750W Peak (250W RMS) 5.25" V-Series 2 Way Component Car Speakers

• 375 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

2+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.
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VIP Product Get $10.00 in rewards to spend later

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Install kits available for most vehicles

found car based on your search
Fits the following location in your SC430
  • Lower Front Door
27
List price $119.99
-17% $99.99 /set

In stock

Add to Cart
Continue to cart
Available Offers (2) for NVX VSP525KIT
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Dads & Grads Sale! Save 15% at Checkout!
List price $119.99
-17% $99.99
$84.99 with coupon | Price details
Add to cart
2026-06-30 23:59:00
Free Speaker Accessory at Checkout!
Add both to cart
Used from: $88.57
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NVX VSP525

480W Peak (160W RMS) 5.25" V-Series 2 Way Coaxial Car Speakers

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NVX VSP525

480W Peak (160W RMS) 5.25" V-Series 2 Way Coaxial Car Speakers

• 240 watts Peak Each, 80 watts RMS Each
• 1" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 2.16"

2+ offers available
shipping truck icon Free shipping in USA. Provide zip for delivery date.
VIP Star Icon

VIP Product Get $8.00 in rewards to spend later

install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your SC430
  • Lower Front Door
23
List price $95.99
-17% $79.99 /pair

In stock

Add to Cart
Continue to cart
Available Offers (2) for NVX VSP525
Offer image
Dads & Grads Sale! Save 15% at Checkout!
List price $95.99
-17% $79.99
$67.99 with coupon | Price details
Add to cart
2026-06-30 23:59:00
Free Speaker Accessory at Checkout!
Add both to cart
Like New from: $74.99
See all 12 special offers
Limited time!

NVX VPRO8BM (Sold Individually)

500W Peak (250W RMS) 8" V-Series Pro Midrange Loudspeaker

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NVX VPRO8BM (Sold Individually)

500W Peak (250W RMS) 8" V-Series Pro Midrange Loudspeaker

• 500 watts Peak Each, 250 watts RMS Each
• Competition Grade Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

Dads & Grads Sale! Save 15% at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

found car based on your search
Fits the following location in your SC430
  • Behind Seat
1
List price $83.99
-40% $49.99

In stock

Add to Cart
Used from: $48.99
See all 9 special offers

NVX NSP4 - Open Box, Great

300W Peak (100W RMS) 4" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters

NSP4 big
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NVX NSP4 - Open Box, Great

300W Peak (100W RMS) 4" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 1.88"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
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Install kits available for most vehicles

found car based on your search
Fits the following location in your SC430
  • Rear Seat Side Panel
3
List price $49.99
-44% $27.99 /pair

In stock

Only 2 Left!

Add to Cart
See all 5 special offers

NVX VSP4 - Open Box, Great

450W Peak (150W RMS) 4" V-Series 2-Way Coaxial Car Speakers with Silk Dome Tweeters

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NVX VSP4 - Open Box, Great

450W Peak (150W RMS) 4" V-Series 2-Way Coaxial Car Speakers with Silk Dome Tweeters

• 225 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your SC430
  • Rear Seat Side Panel
1
List price $71.99
-47% $38.49 /pair

In stock

Only 2 Left!

Add to Cart
See all 6 special offers

NVX VSP525KIT - Open Box, Great

750W Peak (250W RMS) 5.25" V-Series 2-Way Component Speaker System with 25mm Silk Dome Tweeters

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NVX VSP525KIT - Open Box, Great

750W Peak (250W RMS) 5.25" V-Series 2-Way Component Speaker System with 25mm Silk Dome Tweeters

• 375 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your SC430
  • Lower Front Door
List price $119.99
-26% $88.57 /set

In stock

Only 1 Left!

Add to Cart
See all 8 special offers

NVX VSP525 - Like New (Open Box)

480W Peak (160W RMS) 5.25" V-Series 2-Way Coaxial Speakers with 25mm Silk Dome Tweeters

VSP525 big
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NVX VSP525 - Like New (Open Box)

480W Peak (160W RMS) 5.25" V-Series 2-Way Coaxial Speakers with 25mm Silk Dome Tweeters

• 240 watts Peak Each, 80 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 2.16"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your SC430
  • Lower Front Door
List price $95.99
-22% $74.99 /pair

In stock

Only 1 Left!

Add to Cart

NVX NSP525 - Open Box, Great

240W Peak (160W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters

NSP525 big
Go to item page Right Arrow Icon of Right Arrow

NVX NSP525 - Open Box, Great

240W Peak (160W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 1.96"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your SC430
  • Lower Front Door
List price $71.99
-31% $49.99 /pair

In stock

Add to Cart
See all 9 special offers

NVX VPRO8 (Sold Individually) (Open Box, Great)

550W Peak (275W RMS) 8" V-Series Pro 2-Way Water Resistant Coaxial Loudspeaker with Bullet Tweeter

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NVX VPRO8 (Sold Individually) (Open Box, Great)

550W Peak (275W RMS) 8" V-Series Pro 2-Way Water Resistant Coaxial Loudspeaker with Bullet Tweeter

• 275 watts RMS
• 1" Aluminum Dome Bullet Tweeter
• Treated Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your SC430
  • Behind Seat
List price $107.99
-51% $52.49

In stock

Only 1 Left!

Add to Cart
See all 4 special offers

NVX VPRO8BM (Sold Individually) (Open Box, Great)

500W Peak (250W RMS) 8" V-Series Pro Midrange Loudspeaker with Bullet Aluminum Phase Plug

VPRO8BM big
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NVX VPRO8BM (Sold Individually) (Open Box, Great)

500W Peak (250W RMS) 8" V-Series Pro Midrange Loudspeaker with Bullet Aluminum Phase Plug

• 250 watts RMS
• Bullet Aluminum Phase Plug
• Competition Grade Paper cone material
• Impedance: 4 ohm
• Sensitivity: 96 dB

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your SC430
  • Behind Seat
List price $83.99
-42% $48.99

In stock

Only 2 Left!

Add to Cart
See all 4 special offers

NVX NSP4 (2-Pairs, 4-Total)

600W Peak (200W RMS) 4" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters (2-Pairs)

NSP4_2 big
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NVX NSP4 (2-Pairs, 4-Total)

600W Peak (200W RMS) 4" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters (2-Pairs)

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 1.88"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your SC430
25
List price $119.98
-29% $85.48

In stock

Add to Cart

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 1.88"

Lowest price in 30 days

NVX NSP525 with Sound Damping

240W Peak (160W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

NSP525_SDBSK2 big
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NVX NSP525 with Sound Damping

240W Peak (160W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 1.96"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your SC430
74
List price $84.73
-17% $69.98

In stock

Add to Cart

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 1.96"

Lowest price in 30 days

NVX VADM4 Amplifier + 5.25" NVX Speakers

400W RMS Full Range Class D 4-Channel Car/Marine/Powersports Amplifier

VADM4, NSP525X2 big
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NVX VADM4 Amplifier + 5.25" NVX Speakers

400W RMS Full Range Class D 4-Channel Car/Marine/Powersports Amplifier

• 400 Watt True RMS Output!
• Marine Certified 4-Channel Micro Class D Amplifier
• 75W x 4-Chan. @ 4 ohm
• 100W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/2 Channel Operation
• 8 Gauge Power and Ground Inputs
• Extremely Small Footprint!

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your SC430
68
List price $371.97
-27% $269.97

In stock

Add to Cart

• 400 Watt True RMS Output!
• Marine Certified 4-Channel Micro Class D Amplifier
• 75W x 4-Chan. @ 4 ohm
• 100W x 4-Chan. @ 2 ohm
• 3-Way System Protection
• 4/2 Channel Operation
• 8 Gauge Power and Ground Inputs
• Extremely Small Footprint!

Lowest price in 30 days

NVX NSP525 (2-Pairs, 4-Total)

480W Peak (320W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters (2-Pairs)

NSP525_2 big
Go to item page Right Arrow Icon of Right Arrow

NVX NSP525 (2-Pairs, 4-Total)

480W Peak (320W RMS) 5.25" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters (2-Pairs)

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 1.96"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your SC430
27
List price $131.98
-17% $109.98

In stock

Add to Cart

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 1.96"

NVX VSP525KIT (2-Pairs, 4-Total)

1500W Peak (500W RMS) 5.25" V-Series 2-Way Component Speaker System with 25mm Silk Dome Tweeters (2-Pairs)

VSP525KIT_2 big
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NVX VSP525KIT (2-Pairs, 4-Total)

1500W Peak (500W RMS) 5.25" V-Series 2-Way Component Speaker System with 25mm Silk Dome Tweeters (2-Pairs)

• 375 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your SC430
27
List price $239.98
-21% $189.98

In stock

Add to Cart

• 375 watts Peak Each, 125 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

NVX NSP4 with Sound Damping

300W Peak (100W RMS) 4" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

NSP4_SDBSK2 big
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NVX NSP4 with Sound Damping

300W Peak (100W RMS) 4" N-Series 2-Way Coaxial Car Speakers with 20mm Silk Dome Tweeters + NVX SDBSK2 Premium Sound Damping

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 1.88"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your SC430
72
List price $78.73
-30% $55.48

In stock

Add to Cart

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 1.88"

NVX VSP4 (2-Pairs, 4-Total)

900W Peak (300W RMS) 4" V-Series 2-Way Coaxial Car Speakers with Silk Dome Tweeters (2-Pairs)

VSP4_2 big
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NVX VSP4 (2-Pairs, 4-Total)

900W Peak (300W RMS) 4" V-Series 2-Way Coaxial Car Speakers with Silk Dome Tweeters (2-Pairs)

• 225 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your SC430
17
List price $143.98
-21% $113.98

In stock

Add to Cart

• 225 watts Peak Each, 75 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 2.04"

NVX VSP525KIT Component Speaker System with Speaker Installation Kit

5-1/4" Component Car Speaker System with Speaker Baffles, Sound Dampening and Heavy Duty Roller

VSP525KIT, XBAF525, SDSK2, SDRLR big
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NVX VSP525KIT Component Speaker System with Speaker Installation Kit

5-1/4" Component Car Speaker System with Speaker Baffles, Sound Dampening and Heavy Duty Roller

• Peak Power: 375W each side
• RMS Power: 125W each side
• 2-way
• 4 ohm Impedance
• Polypropylene Component Woofer Cone
• Nitrile Butadiene Rubber Speaker Surround
• 25mm Silk Dome Tweeter

shipping truck icon Free shipping in USA. Provide zip for delivery date.
install icon

Install kits available for most vehicles

found car based on your search
Fits the following location in your SC430
  • Lower Front Door
175
List price $192.70
-27% $140.02 /set

In stock

Add to Cart

• Peak Power: 375W each side
• RMS Power: 125W each side
• 2-way
• 4 ohm Impedance
• Polypropylene Component Woofer Cone
• Nitrile Butadiene Rubber Speaker Surround
• 25mm Silk Dome Tweeter

NVX VSP525 (2-Pairs, 4-Total)

960W Peak (320W RMS) 5.25" V-Series 2-Way Coaxial Speakers with 25mm Silk Dome Tweeters (2-Pairs)

VSP525_2 big
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NVX VSP525 (2-Pairs, 4-Total)

960W Peak (320W RMS) 5.25" V-Series 2-Way Coaxial Speakers with 25mm Silk Dome Tweeters (2-Pairs)

• 240 watts Peak Each, 80 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 2.16"

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your SC430
23
List price $191.98
-21% $151.98

In stock

Add to Cart

• 240 watts Peak Each, 80 watts RMS Each
• 1" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB
• Mounting Depth: 2.16"

Lowest price in 30 days

(2-Pairs) NVX NSP525 + NVX Speaker Baffles

(4-Total) 5-1/4" 2-Way N-Series Coaxial Car Speakers with 20mm Silk Dome Tweeters

NSP525, NSP525 big
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(2-Pairs) NVX NSP525 + NVX Speaker Baffles

(4-Total) 5-1/4" 2-Way N-Series Coaxial Car Speakers with 20mm Silk Dome Tweeters

• Peak Power: 240W Each
• RMS Power: 80W Each
• 2-Way Coaxial
• 4 ohm Impedance
• Polypropylene Cone Material
• Nitrile Butadiene Rubber Surround
• 20mm Silk Dome Tweeter

shipping truck icon Free shipping in USA. Provide zip for delivery date.
found car based on your search
Fits your SC430
36
List price $171.96
-35% $112.04

In stock

Add to Cart

• Peak Power: 240W Each
• RMS Power: 80W Each
• 2-Way Coaxial
• 4 ohm Impedance
• Polypropylene Cone Material
• Nitrile Butadiene Rubber Surround
• 20mm Silk Dome Tweeter

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    FAQ for Speakers in 2003 SC430

    Q: Can I upgrade or change the Speakers in 2003 Lexus SC430?

    A: Yes this page includes all the best Speakers that work in your SC430.

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    Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

    • You see only parts engineered for your exact vehicle
    • You avoid incompatible radios, speakers, or wiring
    • Installation is smoother, faster, and frustration-free
    • You get the correct accessories the first time

    Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.

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