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2003 Infiniti QX4

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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 Independance Day Sale

Speakers & Speaker Installation for 2003 Infiniti QX4

Find speakers to upgrade your sound and fit in the factory speaker location for your QX4.  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.

Front Door Panel Speakers

Front Door Speakers

Speakers for your front door panels

Front Pillar Speakers

Front Pillar Speakers

Speakers for your front pillars

Rear Door Panel Speakers

Rear Door Panel Speakers

Speakers for your rear door panels

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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.
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Hertz DSK130.3 + $75 Gift Card

120W Peak (60W RMS) 5.25” Dieci Series Component Speakers

DSK 130.3, 75EGIFT big
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Hertz DSK130.3 + $75 Gift Card

120W Peak (60W RMS) 5.25” Dieci Series Component Speakers

• 60 Watts Max Each, 30 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93 dB

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3
List price $305.00
-33% $203.57 /set

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Only 2 Left!

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• 60 Watts Max Each, 30 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93 dB

Hertz DSK170.3 + FREE $100 Gift Card

320W Peak (160W RMS) 6.75” Dieci Series 2-way Component Speakers

DSK 170.3, 100EGIFT big
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Hertz DSK170.3 + FREE $100 Gift Card

320W Peak (160W RMS) 6.75” Dieci Series 2-way Component Speakers

• 80 Watts Max Each, 40 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93 dB

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6
List price $330.00
-39% $199.99 /set

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• 80 Watts Max Each, 40 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93 dB

Hertz CPX 165 (2-Pairs, 4-Total)

1140W Peak (380W RMS) 6.5" Cento Series 2-Way Coaxial Car Speakers (2-Pairs)

CPX165_2 big
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Hertz CPX 165 (2-Pairs, 4-Total)

1140W Peak (380W RMS) 6.5" Cento Series 2-Way Coaxial Car Speakers (2-Pairs)

• 285 watts Peak Each, 95 watts RMS Each
• 0.9 Tetolon Dome Tweeters
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

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3
List price $810.00
-14% $699.98

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• 285 watts Peak Each, 95 watts RMS Each
• 0.9 Tetolon Dome Tweeters
• Pressed Paper cone material
• Impedance: 4 ohm
• Sensitivity: 92 dB

Hertz K 170 (2-Pairs, 4-Total)

1120W Peak (280W RMS) 6.75” Uno Series Component Speaker (2-Pairs)

K170_2 big
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Hertz K 170 (2-Pairs, 4-Total)

1120W Peak (280W RMS) 6.75” Uno Series Component Speaker (2-Pairs)

• 280 Watts Max Each, 70 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93.5 dB

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4
List price $300.00
-33% $199.98

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• 280 Watts Max Each, 70 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93.5 dB

Lowest price in 30 days

(2) KICKER 43CSS654 6.5" 6-1/2" 1200 Watt 4-Ohm Car Audio Component Speaker Sets

600W Peak (200W RMS) 6.5" CSS 2-Way Component Car Speakers Package

43CSS654 big
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(2) KICKER 43CSS654 6.5" 6-1/2" 1200 Watt 4-Ohm Car Audio Component Speaker Sets

600W Peak (200W RMS) 6.5" CSS 2-Way Component Car Speakers Package

• Peak Power: 600W
• RMS Power: 200W
• (tweeter size 3/4", titanium dome tweeter
• Mounting Depth: 1-11/16"
• Polypropylene midwoofer cone

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9
List price $399.98
-28% $287.92

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• Peak Power: 600W
• RMS Power: 200W
• (tweeter size 3/4", titanium dome tweeter
• Mounting Depth: 1-11/16"
• Polypropylene midwoofer cone

Hertz CX 130 with Sound Damping

300W Peak (100W RMS) 5.25" Cento Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

CX130_SDSK2 big
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Hertz CX 130 with Sound Damping

300W Peak (100W RMS) 5.25" Cento Series 2-Way Coaxial Car Speakers + NVX SDSK2 Sound Damping

• 150 watts Peak Each, 50 watts RMS Each
• 15/16 Tetolon Dome Tweeters
• cone material
• Impedance: 4 ohm
• Sensitivity: 92.5 dB

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48
List price $278.74
-5% $264.98

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• 150 watts Peak Each, 50 watts RMS Each
• 15/16 Tetolon Dome Tweeters
• cone material
• Impedance: 4 ohm
• Sensitivity: 92.5 dB

Infinity Kappa 53XF (INFSPKKA53XFAM) (2-Pairs, 4-Total)

720W Peak (240W RMS) 5.25" Kappa Series 2-Way Coaxial Car Speakers (2-Pairs)

KAPPA53XF_2 big
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Infinity Kappa 53XF (INFSPKKA53XFAM) (2-Pairs, 4-Total)

720W Peak (240W RMS) 5.25" Kappa Series 2-Way Coaxial Car Speakers (2-Pairs)

• 180 watts Peak Each, 60 watts RMS Each
• 1" Silk Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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List price $499.90
-20% $399.90

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• 180 watts Peak Each, 60 watts RMS Each
• 1" Silk Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Alpine S2-S65 (2-Pairs, 4-Total)

960W Peak (320W RMS) 6.5" S-Series 2-way Coaxial Car Speakers (2-Pairs)

S2S65_2 big
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Alpine S2-S65 (2-Pairs, 4-Total)

960W Peak (320W RMS) 6.5" S-Series 2-way Coaxial Car Speakers (2-Pairs)

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

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5
List price $360.00
-17% $299.90

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

Infinity Kappa 503CF with Sound Damping

480W Peak (160W RMS) 5.25” Kappa Series 2-way Component Speakers System + NVX SDSK2 Sound Damping

KAPPA503CF_SDSK2 big
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Infinity Kappa 503CF with Sound Damping

480W Peak (160W RMS) 5.25” Kappa Series 2-way Component Speakers System + NVX SDSK2 Sound Damping

• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Edge-Driven Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

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49
List price $468.69
-37% $294.98

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• 240 watts Peak Each, 80 watts RMS Each
• 3/4" Silk Edge-Driven Dome Tweeters
• Glass Fiber cone material
• Impedance: 3 ohm
• Sensitivity: 93 dB

Hertz DSK130.3 with Speaker Installation Kit

Includes: (2) 5.25" 2-Way Component speakers, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

DSK 130.3, XBAF525, SDRLR1, SDSK2, BTK106 big
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Hertz DSK130.3 with Speaker Installation Kit

Includes: (2) 5.25" 2-Way Component speakers, 2 Piece Foam Speaker Ring Kit, Sound Damping Kit, Installer Panel Removal Tool Kit, Rubber Roller

• 60 Watts Max Each, 30 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93 dB

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149
List price $302.71
-21% $240.02 /set

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Only 2 Left!

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• 60 Watts Max Each, 30 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93 dB

Diamond Audio DES525 with Speaker Installation Kit

240W Peak (120W RMS) 5.25" Elite Series 2-Way Coaxial Car Speakers + 5.25” Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

DES525, XBAF525, SDSK2, SDRLR1, BTK106 big
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Diamond Audio DES525 with Speaker Installation Kit

240W Peak (120W RMS) 5.25" Elite Series 2-Way Coaxial Car Speakers + 5.25” Speaker Baffles, Sound Dampening, Roller and Panel Removal Kit

• 100 watts Peak Each, 50 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite Fiber Weave cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

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149
List price $262.70
-9% $240.02 /pair

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Only 1 Left!

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• 100 watts Peak Each, 50 watts RMS Each
• 1" Aluminum Dome Tweeters
• Composite Fiber Weave cone material
• Impedance: 4 ohm
• Sensitivity: 85 dB

Polk Audio DB5252 with Installation Accessories

200W RMS 5.25” 2-way Car & Marine Component Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

DB5252, XBAF525, SDSK2, SDRLR1, BTK106 big
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Polk Audio DB5252 with Installation Accessories

200W RMS 5.25” 2-way Car & Marine Component Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

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174
List price $282.70
-15% $240.03 /set

In stock

Only 2 Left!

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• 300 watts Peak Each, 100 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 91 dB

Cerwin Vega XED525C (2-Pairs, 4-Total)

1200W Peak (120W RMS) 5.25” XED Series 2-Way Component Speakers (2-Pairs)

XED525C_2 big
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Cerwin Vega XED525C (2-Pairs, 4-Total)

1200W Peak (120W RMS) 5.25” XED Series 2-Way Component Speakers (2-Pairs)

• 300 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

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8
List price $143.98
-17% $119.98

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• 300 watts Peak Each, 30 watts RMS Each
• 1" Metallic Balanced Dome Tweeters
• Curvilinear polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 94 dB

Lowest price in 30 days

MTX Audio RTX108 with Speaker Installation Kit

180W Peak (90W RMS) 5.25" Thunder Series 2-Way Component System with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

THUNDER51, XBAF525, SDSK2, SDRLR1, BTK106 big
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MTX Audio RTX108 with Speaker Installation Kit

180W Peak (90W RMS) 5.25" Thunder Series 2-Way Component System with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

• Peak Power: 180W • RMS Power: 90W
• 1" Soft Dome Tweeter
• Mounting Depth: 2.19"
• Polypropylene Cone and Rubber Surround

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158
List price $312.66
-23% $239.82 /set

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• Peak Power: 180W • RMS Power: 90W
• 1" Soft Dome Tweeter
• Mounting Depth: 2.19"
• Polypropylene Cone and Rubber Surround

Lowest price in 30 days

Infinity REF507CF with Sound Damping

390W Peak (130W RMS) 5.25" Reference Series 2-way 4-ohm Component Speaker System + NVX SDSK2 Sound Damping

REF507CF_SDSK2 big
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Infinity REF507CF with Sound Damping

390W Peak (130W RMS) 5.25" Reference Series 2-way 4-ohm Component Speaker System + NVX SDSK2 Sound Damping

• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

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48
List price $268.69
-29% $190.94

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• 195 watts Peak Each, 65 watts RMS Each
• 3/4" Textile Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 93 dB

JBL Stage3 527 (Stage 3 527) (2-Pairs, 4-Total)

360W Peak (120W RMS) 5.25” Stage3 Series 2-Way 3-Ohm Coaxial Car Speakers (2-Pairs)

STAGE3527AM_2 big
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JBL Stage3 527 (Stage 3 527) (2-Pairs, 4-Total)

360W Peak (120W RMS) 5.25” Stage3 Series 2-Way 3-Ohm Coaxial Car Speakers (2-Pairs)

• 90 watts Max Each, 30 watts RMS Each
• PEI (Polyetherimide) Dome Tweeters
• Injection Molded Polypropylene - IMPP cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB @2.83V
• Mounting Depth: 2-3/16"

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2
List price $219.90
-36% $139.90

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• 90 watts Max Each, 30 watts RMS Each
• PEI (Polyetherimide) Dome Tweeters
• Injection Molded Polypropylene - IMPP cone material
• Impedance: 3 ohm
• Sensitivity: 91 dB @2.83V
• Mounting Depth: 2-3/16"

Limited time!

NVX NSP65KIT + NSP65

600W Peak (200W RMS) 6.5" Component Speaker System + NSP65 6.5" Coaxial Speakers

NSP65KIT, NSP65 big
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NVX NSP65KIT + NSP65

600W Peak (200W RMS) 6.5" Component Speaker System + NSP65 6.5" Coaxial Speakers

• 600 watts Peak Each, 200 watts RMS Each
• 3/4" Silk Dome Tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

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99
List price $215.98
-29% $152.98 /set

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(2) Pairs Rockford Fosgate R1525X2 5.25" 2-Way 320 Watt Car Audio Speakers

160W Peak (80W RMS) 5-1/4" 2-Way PRIME Series Coaxial Car Speakers Package

R1525X2 2 Pack big
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(2) Pairs Rockford Fosgate R1525X2 5.25" 2-Way 320 Watt Car Audio Speakers

160W Peak (80W RMS) 5-1/4" 2-Way PRIME Series Coaxial Car Speakers Package

• Peak Power: 80W
• RMS Power: 40W
• 2-Way Coaxial Design
• 4 ohm Impedance
• Polypropylene Cone
• Rubber Surround
• 1/2" Silk Dome Tweeter
• Integrated Crossover

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21
$159.98

In stock

Add to Cart

• Peak Power: 80W
• RMS Power: 40W
• 2-Way Coaxial Design
• 4 ohm Impedance
• Polypropylene Cone
• Rubber Surround
• 1/2" Silk Dome Tweeter
• Integrated Crossover

Hertz K 130 + FREE $50 Gift Card

220W Peak (130W RMS) 5.12” Uno Series Component Speakers

K 130, 50EGIFT big
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Hertz K 130 + FREE $50 Gift Card

220W Peak (130W RMS) 5.12” Uno Series Component Speakers

• 110 Watts Max Each, 30 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93 dB

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15
List price $200.00
-40% $119.99 /set

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• 110 Watts Max Each, 30 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93 dB

Hertz K 170 + FREE $25 Gift Card

560W Peak (140W RMS) 6.75” Uno Series Component Speaker

K 170, 25EGIFT big
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Hertz K 170 + FREE $25 Gift Card

560W Peak (140W RMS) 6.75” Uno Series Component Speaker

• 140 Watts Max Each, 35 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93.5 dB

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8
List price $175.00
-31% $119.99 /set

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• 140 Watts Max Each, 35 Watts RMS Each
• Water-repellent pressed paper cone material
• PEI Tweeter Dome
• 4 Ohm Impedance
• Sensitivity: 93.5 dB

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    FAQ for Speakers in 2003 QX4

    Q: Can I upgrade or change the Speakers in 2003 Infiniti QX4?

    A: Yes this page includes all the best Speakers that work in your QX4.

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    • Owner's manual
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    • Vehicle produced after 2005: Inside driver's side door
    • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
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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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