See all parts that fit your 2003 A4
8 Gauge 4000 Series Power & Signal Amplifier Installation Kit
• 8 Gauge 4000 Series Power & Signal Amplifier Wiring Kit
• Designed Specifically for Car Audio Systems up to 400 Watts
• 2-Channel RCA Interconnect Cables
• Pre-Terminated Power Connections
• Tru-Spec Wires
Connect your factory antenna to a new aftermarket radio for select 1973-2025 vehicles from Audi, Mercedes-Benz, Volkswagen
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Install a new Single-DIN or Double-DIN car stereo in select 2002-2009 S4 and A4 and RS4 (Matte Black)
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6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto (Sirius XM Ready)
$399.00
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Double DIN CD Receiver with Bluetooth and Built-in Alexa (Sirius XM Ready)
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This offer cannot be combined with any other coupons or offers.
AudioControl ACM-2.300
30% off
$359 00
$60 99
Priced separately $419 99
Promo Savings of $18 30
Total price:
$401 69
• 8 Gauge 4000 Series Power & Signal Amplifier Wiring Kit
• Designed Specifically for Car Audio Systems up to 400 Watts
• 2-Channel RCA Interconnect Cables
• Pre-Terminated Power Connections
• Tru-Spec Wires
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(newest, current model)
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(previous model, replaced by Stinger SK4681)
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6.75" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto with Backup Camera
$329.99
600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers
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6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready
$349.99
List price $420.00
7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)
$329.95
List price $349.95
6.8" Double DIN Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Android Auto (SiriusXM Ready)
$599.99
List price $750.00
480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)
$84.99
List price $94.99
600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers
$109.00
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6.2" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto and Phone Mirroring
$89.99
List price $269.99
360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers
$99.95
List price $139.95
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Manufacturer:
Model Number:
SK4681
Weight:
2.39lbs
Internal SKU:
sk4681
Internal Product ID:
38901
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Nice, true 8 gauge amp kit.
Good amp kit that comes with everything you need. It is true 8 gauge wire.
104 found this helpful
stinger
Great product! Heavy duty and does more than what its asked to do!
94 found this helpful
Great value
For what you get in this kit it's a really good price from a decent company.
Verified purchase
49 found this helpful
An amplifier wiring kit that gets the job done
Had everything I needed, including 2 larger sized (8ga - 12ga) butt connectors, which I ended up using.
I should noted that I did end up buying a separate Stinger 4-Channel RCA cable as well. I didn't require speaker wire as I was able to re-use my cars wiring.
Verified purchase
46 found this helpful
Great brand of wires and inter connect, never go wrong with the brand, great value for the price. Thank you team sonic!
Verified purchase
41 found this helpful
Everything you need for a 500 rms amp
Reasonably priced ofc that saves to install your own amp.
Verified purchase
40 found this helpful
Stinger SK4681
Nice kit, quality wires and connections. Amp works well with supplied power.
39 found this helpful
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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:
Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.
