Garage
Shop

See all parts that fit your 2003 A6

Kicker KSC46 (51KSC4604)

300W Peak (150W RMS) 4x6" KS Series 2 Way Coaxial 4-ohm Speakers

Kicker
Shop all Kicker
highlight-star-icon

• 150 watts Peak Each, 75 watts RMS Each
• 1/2" Silk Balanced Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 88 dB

Learn more about the 51ksc4604
No Fit Icon

Doesn't fit your 2003 A6

Similar items | Update vehicle | Vehicle store
List price $119.99
Thanks , You Pay:
-17%

$99.99

/pair  with warranty
Starting at $18/mo or 4 payments of $25 Buy now, pay later and installment payment plans are offered by Afterpay and Affirm. Learn more

Heads up

Your vehicle can use this product in multiple locations. Only a quantity of one can be selected from the product page. You will have the option to adjust the quantity within your cart.

shipping truck icon Free shipping in USA. Provide zip for delivery date.
Dollar Icon
VIP Product Get $10.00 in rewards to spend later
Quantity
In Stock
Brand new
NSP46 main
NVX NVX NSP46 300W Peak (100W RMS) 4x6" N-Series 2 Way Coaxial Car Speakers

(34)

$49.99 $59.99
Sponsored

Acima Logo

No Credit Option

Flexible Lease Payments

Early Purchase Options

Quick Approval Decision

Extend logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Hassle-free immediate replacement within minutes!
  • Easy online claims 24/7
  • Covers product breakdowns and failures
Swoosh Icon Icon of Swoosh

For over 25 years, we've been your X-Factor – the team dedicated to having the biggest impact on your shopping experience!

Award winning icon
Award-Winning Service
Shipping icon
FREE Shipping Orders $49+
60 days return policy icon
60-Day Easy Returns
lowest price guarantee icon
Guaranteed Lowest Price
inHouseExpert
In-House Experts
NVX - Worth the Envy - Direct to Consumer Car Audio

Loading...
C1-650x main

JL Audio C1-650x

100W RMS 6.5" C1 Series 2 Way Coaxial 4-ohm Car Speakers

42

Current Promotions (8 offers)


This offer cannot be combined with any other coupons or offers.

Kicker KSC46 (51KSC4604)

30% off


Priced separately $142 98

Promo Savings of $12 90

Total price:

$130 08

This offer cannot be combined with any other coupons or offers.

Kicker KSC46 (51KSC4604)

30% off


Priced separately $165 98

Promo Savings of $19 80

Total price:

$146 18

This offer cannot be combined with any other coupons or offers.

Kicker KSC46 (51KSC4604)

30% off


Priced separately $155 98

Promo Savings of $16 80

Total price:

$139 18

This offer cannot be combined with any other coupons or offers.

Kicker KSC46 (51KSC4604)

20% off


Priced separately $129 98

Promo Savings of $6 00

Total price:

$123 98

This offer cannot be combined with any other coupons or offers.

Kicker KSC46 (51KSC4604)

30% off


Priced separately $146 98

Promo Savings of $14 10

Total price:

$132 88

This offer cannot be combined with any other coupons or offers.

Kicker KSC46 (51KSC4604)

30% off


Priced separately $123 98

Promo Savings of $7 20

Total price:

$116 78

This offer cannot be combined with any other coupons or offers.

Kicker KSC46 (51KSC4604)

20% off


Priced separately $110 98

Promo Savings of $2 20

Total price:

$108 78

Get 40% Off NVX SDSK2 Sound Dampening Speaker Kit with your Speaker purchase! Simply click the "Add Both to Cart" button. This offer cannot be combined with any other coupons or offers.

Kicker KSC46 (51KSC4604)

40% off


Priced separately $114 98

Promo Savings of $6 00

Total price:

$108 98

Description


Kicker brand icon

Authorized dealer

Kicker 51KSC4604

KICKER KS-Series Speakers let you play at concert-like volume yet maintain the smoothness and subtlety to please even the most selective ear. Internally dampened polypropylene cones and durable rubber surrounds assist the woofers in creating precise midrange and midbass, while high-quality silk-dome tweeters deliver natural, detailed highs.

With less thana 2-inch mounting depth and one millimeter of tweeter protrusion, the KSC460 is a perfect fit in almost every vehicle on the road today. They work best with 15 to 75 watts of recommended power.

Product Details:

  • 4" x 6" KS Series 2-way Coaxial Car Speakers
  • Power Handling:
    • Peak: 300 watts per pair / 150 watts each
    • RMS: 150 watts per pair / 75 watts each
  • Polypropylene cone material
  • Rubber speaker surround
  • 1/2" Silk Balanced Dome tweeters
  • Neodymium magnet motor structure
  • Thin-mount design easily fits behind factory grilles
  • Top-mount Depth: 1-11/16"
  • Cutout Dimensions: 4 x 5-5/16 
  • Impedance: 4 ohm
  • Frequency Response: 50 - 20000 Hz
  • Sensitivity: 88 dB
  • Authorized Internet Dealer
  • MFR #: 51KSC4604
  • 2 Year Manufacturer's Warranty

  • Priced Per Pair

Product history:

Kicker 51KSC4604 thumbnail
(newest, current model)
Kicker KSC460 thumbnail
(previous model, replaced by Kicker KSC46 (51KSC4604))

Loading...
DMH-1800NEX main

Pioneer DMH-1800NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready

59
-19.05%

$339.99

List price $420.00

UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth

44
-16.69%

$149.95

List price $180.00

CV15BT main

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

3
Limited time!
DMH-W3050NEX main

Pioneer DMH-W3050NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, and Built-in Alexa (Sirius XM Ready)

1
-24.20%

$469.99

List price $620.00

MVH-S322BT main

Pioneer MVH-S322BT

Single DIN Digital Media Receiver with Bluetooth and Amazon Alexa

7
-13.34%

$129.99

List price $150.00

Limited time!
DMX709S main

Kenwood eXcelon DMX709S

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto (Sirius XM Ready)

39
-33.50%

$399.00

List price $600.00

Limited time!
iLX-W670-M main

Alpine iLX-W670-M

6.75" Double DIN Touchscreen Digital Multimedia Receiver with iDataLink Maestro Support, Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)

126
-30.01%

$349.95

List price $500.00

KMM-X705 main

Kenwood eXcelon KMM-X705

Single DIN Digital Media Receiver with Bluetooth, Built-in Alexa (Sirius XM Ready)

6
-20.40%

$199.00

List price $250.00

Limited time!
XAV-AX8500 main

Sony XAV-AX8500

10.1" Single DIN Floating Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Wired Android Auto (SiriusXM Ready)

2
-20.20%

$798.00

List price $999.99

Limited time!
DMH-241EX main

Pioneer DMH-241EX

6.2" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth and Built-in Alexa

22
-35.00%

$194.99

List price $300.00


Best selling similar products

T46 small

Earthquake Sound T46

• 300 watts Peak Each
• 1" Mylar Dome Tweeters
• Low Mass Poly-Injection cone material
• Impedance: 4 ohm
• Sensitivity: 87 dB

(1)

$79.99

List price $99.00

REF467F small

Infinity REF467F (INFSPKRF467FUS)

• 135 watts Peak Each, 45 watts RMS Each
• 1/2" Textile Edge Driven Dome tweeters
• Polypropylene cone material
• Impedance: 3 ohm
• Sensitivity: 92 dB

(2)

$87.95

List price $139.95

THUNDER46 small

MTX Audio THUNDER46

• Peak Each, 40 watts RMS Each
• 1" Silk Soft Dome tweeters
• Polypropylene cone material with concave design
• Impedance: 4 ohm
• Sensitivity: 92 dB

$79.96

List price $99.95

Specifications & Details


Speaker Specifications
Series
KS Series
Priced Per
Pair
Number of Speakers
2
Speaker Size
4" x 6"
Design
2-way Coaxial
Tweeter Design
Balanced Dome
Tweeter Size
1/2"
Tweeter Composition
Silk
Woofer Composition
Polypropylene
Woofer Surround
Rubber
Peak Power Handling
150 watts
RMS Power Handling
75 watts
Total PEAK Per Pair/Set
300 watts
Total RMS Per Pair/Set
150 watts
Sensitivity
88 dB
Frequency Response
50 - 20000 Hz
Impedance (Per Voice Coil)
4 ohm
Shallow Mount Installation
No
Magnet Type
Neodymium
Top-Mount Depth (Mounting Depth)
1-11/16"
Bottom-Mount Depth
2"
Cutout Dimensions
4 x 5-5/16 
CTA-2031 Compliant
No
General specifications
Marine Certified
No
Hi-Res Certified
No
Color
Black
Illumination
None
Speaker Grilles
No
Includes Damping Kit
without Damping Kit
Compatible vehicle types
Car/Truck/SUV/Van
What is in the box?
Paperwork
Quick start guide
WITB: Speakers
Speakers (2)
Mounting screws (8)
Speaker connection cables (2)
Warranty and Return Policy
Parts Warranty Duration
2 years
Labor Warranty Duration
2 years
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

51KSC4604

Weight:

3.00lbs

Internal SKU:

51ksc4604

Internal Product ID:

203314

Customer Ratings & Reviews


Kicker KSC46 (51KSC4604) thumbnail image

5 star
50%
4 star
50%
3 star
0%
2 star
0%
1 star
0%



Durability
4
Value
4
Features
4
Design
5
Usability
5

Customer Reviews

Sort by:

Loading...

Good speakers.

The following review is for a previous version (KSC460).

I got these four years ago for my 91 Silverado's dash and they're perfect still going strong.

By Shane on June 10, 2026 Checkmark Icon Verified purchase
1991 Chevrolet K1500


By Roger on June 19, 2025 Checkmark Icon Verified purchase
1999 Chevrolet S10




NSP46 main

NVX NSP46

• 150 watts Peak Each, 50 watts RMS Each
• 3/4" Silk Dome tweeters
• Polypropylene cone material
• Impedance: 4 ohm
• Sensitivity: 86 dB
• Mounting Depth: 1.81"

(34)

$49.99

List price $59.99


SCVP600SS small

Rival SCVP600SS

Stainless Steel 6 Quart Smart Pot Programmable Slow Cooker

$42.07

List price $54.99

No picture

Dual DS652 (Open Box, Great)

200W Max (100W RMS) 6.5" DS Series 2-Way Coaxial Car Speakers

$20.99

List price $29.99

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

2003 Audi A6

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

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.