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All Car Speakers for your 2003 SC430 close

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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.
Machete Series (10)
PRO-X Series (10)
V Series (10)
Punch Series (9)
Reference Series (9)
CS Series (7)
C1 Series (6)
HED Series (6)
C2 Series (5)
Club Series (5)
Prime Series (5)
PRO Series (5)
SPL Show Series (5)
ZXI Series (5)
A Series (4)
Dieci Series (4)
DMD Series (4)
Excelon Motorsports Series (4)
MSNEO Series (4)
N-Series (4)
Prime Series (4)
S Series (4)
Terminator Series (4)
VEGA Series (4)
VEX Series (4)
XL Series (4)
Apocalypse Series (3)
BASSREV Series (3)
Cento Series (3)
DS Series (3)
EQ Series (3)
EXL Series (3)
G-Series (TSG) (3)
Kappa Series (3)
KS Series (3)
NEO Series (3)
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Polk DB+ Series (3)
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Stage Series (3)
XED Series (3)
C3 Series (2)
Colossus Classic Series (2)
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Focus Series (2)
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M Series (2)
MC Series (2)
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MR Series (2)
PNW Series (2)
Power Series (2)
Power T1 Series (2)
Power T2 Series (2)
PRO-FR Series (2)
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Punch P1 Series (2)
RS Series (2)
Sport Series (2)
Stage 3 Gen 2 Series (2)
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VTEK Series (2)
Zeus Series (2)
Black Hydra Series (1)
CVPRO Series (1)
CVPX Series (1)
Diamond Elite Series (1)
E-Series (1)
ECX Series (1)
EPIC PRO Series (1)
EQ NEO Series (1)
eXcelon Series (1)
Godfather Pro Series (1)
GT7 Series (1)
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Hawk Series (1)
HED Pro Series (1)
MA Series (1)
MM Series (1)
MSPRO Series (1)
MX Series (1)
NEO SPL Series (1)
Octagonal Series (1)
PNX Series (1)
Polk Audio MM1 Series (1)
Premium Series (1)
Pro Audio on Wheels Series (1)
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Road Thunder Extreme Series (1)
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Stage 2 Gen 2 Series (1)
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Uno Series (1)
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2003 SC430
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Alpine BRV-S40

240W Peak (80W RMS) 4" BassRev Series 4-ohm 2-Way Coaxial Speaker Set

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Alpine BRV-S40

240W Peak (80W RMS) 4" BassRev Series 4-ohm 2-Way Coaxial Speaker Set

• 120 watts Peak Each, 40 watts RMS Each
• 1" Polyester cloth Dome Tweeters
• Polypropylene-Mica cone material
• BassRev tuning via Alpine OPTIM8
• Impedance: 4 ohm
• Sensitivity: 84 dB

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Install kits available for most vehicles

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Fits the following location in your SC430
  • Rear Seat Side Panel
List price $300.00
Save $100.05
-33% $199.95 /pair

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Infinity Primus 503F (INFSPKPR503F)

240W Peak (80W RMS) 5.25” Primus Series 2 Way Coaxial 3-ohm Speakers

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Infinity Primus 503F (INFSPKPR503F)

240W Peak (80W RMS) 5.25” Primus Series 2 Way Coaxial 3-ohm Speakers

• 120 watts Peak Each, 40 watts RMS Each
• 1/2" Silk Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB

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Fits the following location in your SC430
  • Lower Front Door
List price $99.95
-30% $69.95 /pair

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Deaf Bonce HANNIBAL HM-8E

320W Peak (160W RMS) 8" Hannibal Series Midrange 4-ohm Car Speakers

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Deaf Bonce HANNIBAL HM-8E

320W Peak (160W RMS) 8" Hannibal Series Midrange 4-ohm Car Speakers

• 160 watts Peak Each, 80 watts RMS Each
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 91.8 dB

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Fits the following location in your SC430
  • Behind Seat
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$34.90 /pair

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Cerwin-Vega VT1

360W Peak (120W RMS) 1" Vega Series 2025 Edition 4-ohm Tweeters with External Crossovers

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Cerwin-Vega VT1

360W Peak (120W RMS) 1" Vega Series 2025 Edition 4-ohm Tweeters with External Crossovers

• 1" VEGA Series Tweeters
• 180 watts Peak Each
• 60 watts RMS Each
• 4 ohm Impedance
• Includes external crossovers

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Install kits available for most vehicles

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Fits the following location in your SC430
  • Upper Front Door
$99.99 /pair

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DS18 PRO-GM8

580W Peak (190W RMS) 8" PRO-GM Series 8-ohm Midrange Car Loudspeaker

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DS18 PRO-GM8

580W Peak (190W RMS) 8" PRO-GM Series 8-ohm Midrange Car Loudspeaker

• 580 watts Peak Each, 190 watts RMS Each
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 93 dB

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Install kits available for most vehicles

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Fits the following location in your SC430
  • Behind Seat
List price $41.99
-17% $34.95

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Diamond Audio DMD52

160W Peak 5.25" DMD Series 2-way Coaxial Car Speakers

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Diamond Audio DMD52

160W Peak 5.25" DMD Series 2-way Coaxial Car Speakers

• 80 watts Peak Each
• 0.79" Silk Dome Tweeters
• Polypropylene cone material
• Sensitivity: 86 dB

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Fits the following location in your SC430
  • Lower Front Door
List price $119.99
-8% $109.99 /pair

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MB Quart PK1-113

220W Peak (110W RMS) 5.25" Premium Series 2-Way 4-ohm Coaxial Car Speakers

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MB Quart PK1-113

220W Peak (110W RMS) 5.25" Premium Series 2-Way 4-ohm Coaxial Car Speakers

• 110 watts Peak Each, 55 watts RMS Each
• 1" Magnesium Dome tweeters
• Tunable waveguide tweeter housing
• Pop Paper-Mica Blend cone material
• Curvilinear cone design geometry
• Impedance: 4 ohm
• Sensitivity: 85.9 dB

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Fits the following location in your SC430
  • Lower Front Door
List price $169.99
-28% $121.87 /pair

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Deaf Bonce HANNIBAL HM-8E-PLUS (HM-8E+)

340W Peak (170W RMS) 8" Hannibal Series Midrange 4-ohm Car Speakers

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Deaf Bonce HANNIBAL HM-8E-PLUS (HM-8E+)

340W Peak (170W RMS) 8" Hannibal Series Midrange 4-ohm Car Speakers

• 170 watts Peak Each, 85 watts RMS Each
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 95 dB

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Install kits available for most vehicles

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Fits the following location in your SC430
  • Behind Seat
1
$39.90 /pair

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Diamond Audio MS82NEO4

1200W Peak (600W RMS) 8" MS NEO Series 2-Way Pro Coaxial 4-ohm Powersports and Motorcycle Speakers

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Diamond Audio MS82NEO4

1200W Peak (600W RMS) 8" MS NEO Series 2-Way Pro Coaxial 4-ohm Powersports and Motorcycle Speakers

• 600 watts Peak Each, 300 watts RMS Each
• Polyethylene-Naphthalate Horn Tweeters
• Waterproof DUPONT™ Kevlar cone material
• Impedance: 4 ohm
• Sensitivity: 97 dB

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  • Behind Seat
$879.99 /pair

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Hertz SV 200 NEO (SV200 NEO)

1000W Peak (400W RMS) 8" SPL Show Series 4-ohms Midrange Car and Motorcycle Speakers

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Hertz SV 200 NEO (SV200 NEO)

1000W Peak (400W RMS) 8" SPL Show Series 4-ohms Midrange Car and Motorcycle Speakers

• 500 watts Peak Each, 200 watts RMS Each
• Terminals and mounting holes compatible for Harley-Davidson motorbikes
• Water-repellent pressed paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB

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Fits the following location in your SC430
  • Behind Seat
List price $650.00
-15% $549.99 /pair

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Sundown Audio VEX-12 S8 (Sold Individually)

500W RMS 12" VEX Series Pro-Audio Midrange 8-ohm Speaker (S-VEX128)

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Sundown Audio VEX-12 S8 (Sold Individually)

500W RMS 12" VEX Series Pro-Audio Midrange 8-ohm Speaker (S-VEX128)

• 500 watts RMS Each
• Carbon Fiber cone material
• Impedance: 8 ohm

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Fits the following location in your SC430
  • Behind Seat
List price $443.99
-17% $369.99

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Diamond Audio MS82NEO2

1200W Peak (600W RMS) 8" MS NEO Series 2-Way Pro Coaxial 2-ohm Powersports and Motorcycle Speakers

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Diamond Audio MS82NEO2

1200W Peak (600W RMS) 8" MS NEO Series 2-Way Pro Coaxial 2-ohm Powersports and Motorcycle Speakers

• 600 watts Peak Each, 300 watts RMS Each
• Polyethylene-Naphthalate Horn Tweeters
• Waterproof DUPONT™ Kevlar cone material
• Impedance: 2 ohm
• Sensitivity: 96 dB

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Install kits available for most vehicles

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Fits the following location in your SC430
  • Behind Seat
$879.99 /pair

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Diamond Audio DES525

200W Peak (100W RMS) 5.25" Elite Series 2-way 4-ohm Coaxial Car Speakers

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Diamond Audio DES525

200W Peak (100W RMS) 5.25" Elite Series 2-way 4-ohm Coaxial Car Speakers

• 100 watts Peak Each, 50 watts RMS Each
• 0.98" Aluminum Dome tweeters
• Composite Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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Install kits available for most vehicles

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Fits the following location in your SC430
  • Lower Front Door
$199.99 /pair

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Diamond Audio MSPRO8

500W RMS 8” MSPRO Series 4-ohm Pro Audio High Output Speakers for Harley-Davidson Motorcycles

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Diamond Audio MSPRO8

500W RMS 8” MSPRO Series 4-ohm Pro Audio High Output Speakers for Harley-Davidson Motorcycles

• Peak Each, 250 watts RMS Each
• Thermal Molded Waterproof Paper cone material
• Impedance: 4 ohm
• Sensitivity: 100 dB
• IP65 marine certified
• Designed for Harley-Davidson motorcycles

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Fits the following location in your SC430
  • Behind Seat
List price $369.99
$359.99 /pair

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Hertz CX 130

300W Peak (100W RMS) 5.25" Cento Series 2-Way Coaxial 4-ohm Car Speakers

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Hertz CX 130

300W Peak (100W RMS) 5.25" Cento Series 2-Way Coaxial 4-ohm Car Speakers

• 150 watts Peak Each, 50 watts RMS Each
• 0.9" Tetolon Dome tweeters
• Semi-Pressed paper with Mica cone material
• Impedance: 4 ohm
• Sensitivity: 92.5 dB

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Fits the following location in your SC430
  • Lower Front Door
List price $260.00
$249.99 /pair

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Hifonics HCC525CX

160W Peak (80W RMS) 5.25" Colossus Classic Series 2 Way Coaxial 4-ohm Speakers

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Hifonics HCC525CX

160W Peak (80W RMS) 5.25" Colossus Classic Series 2 Way Coaxial 4-ohm Speakers

• 80 watts Peak Each, 40 watts RMS Each
• 1" Aluminum Dome Tweeters
• Woven Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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Install kits available for most vehicles

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Fits the following location in your SC430
  • Lower Front Door
$49.99 /pair

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Rockford Fosgate Punch P152 (Open Box, Great)

160W Peak (80W RMS) 5.25" Punch Series 2-way 4-ohm Full Range Car Speakers

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Rockford Fosgate Punch P152 (Open Box, Great)

160W Peak (80W RMS) 5.25" Punch Series 2-way 4-ohm Full Range Car Speakers

• 80 watts Peak Each, 40 watts RMS Each
• 3/4" PEI (Polyetherimide) Dome tweeters
• Mineral-Filled Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

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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 $109.99
-15% $93.49 /pair

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Earthquake Sound VTEK-MC5

1000W RMS 5.25" VTEK Series 2-Way Component 4-ohm Car Speaker System

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Earthquake Sound VTEK-MC5

1000W RMS 5.25" VTEK Series 2-Way Component 4-ohm Car Speaker System

• 500 watts RMS Each
• 1" Silk Dome Tweeters
• Electroplated Carbon Fiber cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

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Fits the following location in your SC430
  • Lower Front Door
List price $249.00
-8% $229.99 /set

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DS18 PRO-GM8.4PK

1160W Peak (380W RMS) 8” PRO-GM Series Component Midrange 4-ohm Speakers

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DS18 PRO-GM8.4PK

1160W Peak (380W RMS) 8” PRO-GM Series Component Midrange 4-ohm Speakers

• 580 watts Peak Each, 190 watts RMS Each
• 1" Aluminum Bullet tweeters
• Paper cone material
• Impedance: 8 ohm
• Sensitivity: 94 dB

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Fits the following location in your SC430
  • Behind Seat
$117.95 /pair

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JBL GX428 (JBLGX428AM)

210W Peak (70W RMS) 4" GX Series 2 Way Coaxial 2.3-ohm Speakers

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JBL GX428 (JBLGX428AM)

210W Peak (70W RMS) 4" GX Series 2 Way Coaxial 2.3-ohm Speakers

• 105 watts Peak Each, 35 watts RMS Each
• Soft Dome tweeters with deflector
• Polypropylene Plus One woofer cone material
• Impedance: 2.3 ohm
• Sensitivity: 90 dB

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Fits the following location in your SC430
  • Rear Seat Side Panel
$64.95 /pair

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Ships in 10-14 days

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    FAQ Frequently asked questions in All Car Speakers

    Car Speakers Frequently Asked Questions (FAQ)
    Coaxial car speakers, also known as full-range speakers, combine multiple speaker elements in one unit. These elements typically include a woofer for low frequencies and a tweeter for high frequencies. Some coaxial speakers may also have a mid-range driver for enhanced sound quality. The key advantage of coaxial speakers is their simplicity and ease of installation, as all components are housed in a single unit, making them a popular choice for stock speaker replacements. In contrast, component speakers consist of separate speaker elements—woofers, tweeters, and sometimes mid-range drivers—allowing for greater customization and sound quality. Component systems offer better sound separation and imaging, making them a preferred choice for audiophiles and those seeking high-quality audio in their vehicles.
    Speaker sensitivity, measured in decibels (dB), indicates how efficiently a speaker converts power into sound. Higher sensitivity speakers produce more sound with less power, making them suitable for low-powered factory stereos or aftermarket head units. Lower sensitivity speakers may require more power to achieve the same volume level. When choosing car speakers, it's essential to consider sensitivity to match your stereo's power output. If you have a low-powered system, opt for high-sensitivity speakers to maximize sound output without distortion. Conversely, higher-powered aftermarket amplifiers can work well with lower sensitivity speakers. Balancing speaker sensitivity with your system's power output is crucial to achieving optimal audio quality and avoiding distortion.
    Speaker impedance, measured in ohms (Ω), represents the electrical resistance a speaker presents to an amplifier. Car speakers typically come in 4-ohm and 8-ohm versions, with 4-ohm being the most common. The speaker's impedance affects the amount of power it draws from the amplifier. In car audio systems, it's essential to match the speaker's impedance with the amplifier's minimum recommended load. Amplifiers are designed to work most efficiently within specific impedance ranges, and a mismatch can result in reduced power output and potential damage to the amplifier or speakers. Most car audio amplifiers are optimized for 4-ohm speakers, so choosing 4-ohm speakers is generally a safe choice. However, if you're connecting multiple speakers, it's crucial to calculate the total impedance to avoid overloading the amplifier.
    Upgrading factory car speakers with aftermarket speakers offers several advantages: Improved Sound Quality: Aftermarket speakers often feature better materials, construction, and design, resulting in clearer, more detailed sound. Enhanced Bass: Upgraded speakers typically provide deeper and more pronounced bass response. Greater Power Handling: Aftermarket speakers can handle more power, reducing the risk of distortion at higher volumes. Customization: Aftermarket speakers offer a wide range of sizes, styles, and features, allowing you to tailor your sound system to your preferences. Durability: Many aftermarket speakers are built to withstand the harsh conditions of automotive use, increasing their longevity. Overall, upgrading car speakers can transform your in-car audio experience, delivering higher fidelity and more enjoyable sound.
    2-way and 3-way car speakers differ in the number of driver elements they incorporate. A 2-way speaker consists of a woofer for low frequencies and a tweeter for high frequencies, while a 3-way speaker adds a mid-range driver for improved sound separation. The choice between 2-way and 3-way speakers depends on your audio priorities and budget. 2-way speakers are cost-effective and suitable for most users, providing good sound quality and clarity. They are ideal for replacing factory speakers or upgrading basic audio systems. 3-way speakers offer enhanced sound separation and improved mid-range performance. If you seek more detailed and balanced audio with better instrument and vocal reproduction, 3-way speakers are a worthy upgrade. However, they tend to be pricier than 2-way speakers. Ultimately, your choice should align with your audio preferences and budget, as both 2-way and 3-way speakers can significantly enhance your car's audio system compared to factory-installed speakers.
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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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