Garage
Shop
Account Icon
Account
Box Icon
Track
order
Telephone Icon
Call
Help Icon
Help
Door with Arrow Icon
Sign In

2011 Audi A4

Change vehicle | Remove vehicle

Universal gear includes car amplifiers, subs, and other products that do not install in a specific location or require fitment to integrate with a vehicle.

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

Universal-Fit Audio for 2011 Audi A4

When thinking of universal gear, we consider products like a car amp that gives more power to your speakers or subs, cell phone chargers, equalizers and sound processors, rear-seat entertainment and video monitors, as well as dash cameras.

Better sound with your factory radio

Better sound with a factory radio

Love your factory look or can't replace the stereo? We got you covered.

Filters
Connectors ✕
Clear Filters
Reset Done
Product Type
Connectors,
You Recently Chose:
Alarm remote transmitters (96)
Alarms (34)
RCA cables and accessories (264)
Subwoofers (1,154)
Amplifiers (934)
Subwoofers with a box (787)
Amplifiers with a wiring kit (439)
Subwoofer enclosures (215)
Subwoofers with an amplifier and box (188)
Lighting accessories (176)
Subwoofer grilles (169)
Tweeters (Pro and special-fit) (148)
Speaker clamps and brackets (139)
Amplifier wiring kits (137)
Batteries (131)
Power and ground wire (129)
Fuses (123)
Backup cameras (121)
Speaker grilles (120)
Sound damping (104)
Subwoofers with an amplifier (101)
Handlebar and bar-mount speakers (97)
Line-out converters (89)
Fuse holders (81)
Speaker wire (73)
Ring terminals (63)
Replacement antennas (62)
Distribution blocks (58)
Light bars (58)
Connectors (57)
Tweeters (55)
Speaker enclosures (52)
Bass remotes (51)
Speaker spacers and rings (50)
Cables and interconnects (49)
Bluetooth adapters and transmitters (48)
Speaker baffles (41)
Sound processors (39)
Trim rings and universal mounts (39)
Dash cameras (33)
Recone kits (32)
Stereo remote controls (32)
Rocker and Button switches (31)
Circuit breakers (30)
Primary/Remote wire (29)
Battery isolators and relays (27)
Battery terminals (27)
Audio test equipment (26)
Exterior lighting (26)
Installation accessories (25)
Trigger output and bypass modules (25)
Alarm accessories (23)
Antenna extension cables (23)
Split loom and heat shrink (22)
Diodes and resistors (21)
Capacitors (19)
Knockout panels (18)
Equalizers (17)
Noise filters (15)
Rearview monitor and mirrors (14)
Terminal cups (14)
Battery terminal posts (13)
Adapters (12)
Headlight bulbs (11)
Radar and laser detectors (11)
Video adapters and switchers (11)
Speaker diaphragms (10)
Bass booster enhancers and processors (9)
Battery chargers (8)
Power inverters (8)
2-way and CB radios (7)
Amplifier mounting hardware (7)
Panel and clip removal tools (7)
Voltmeters (7)
Blindspot cameras and sensors (6)
Gauge adapters (6)
Grommets and firewall bushings (6)
Headlights (6)
Sensors (6)
Box ports (5)
Carpet (5)
Knockout panel mount hardware (5)
Line drivers (5)
Passive crossovers (5)
Power supplies (5)
Steering wheel adapters (5)
Active Crossovers (4)
Bass Blockers (4)
License plates and frames (4)
Parking sensors (4)
Amplifier cooling fans (3)
Door panel clips (3)
Subwoofer (3)
Big 3 upgrade kits (2)
Door actuators and poppers (2)
In-motion video/navigation bypass (2)
Radar detector mounts (2)
Rearview mirror mounts (2)
Video amplifiers (2)
Alarms with remote start (1)
Backup batteries (1)
Cable management (1)
Connector sets (1)
FM modulators and transmitters (1)
Multi-camera and DVR systems (1)
Overhead monitors (1)
Remote mount media players (1)
Price Range
Connector Type
There are many different ways to connect wires together. Often times when doing your own installation, you will be in need of specific types of connectors. This is the specific type of connector or terminal that is included with this item.

Bullet and Butt connectors are used to connect to wires together. Butt connectors are often used when installing an aftermarket headunit to the factory harness.

Quick Disconnect Connectors are used primarily in head unit or speaker applications. They provide a simple and easy way to connect or disconnect your wire.

Quick Splice Adapters and T-Tap Connectors can quickly tap a wire to already connected wire.

Relays, Relay Sockets and Switches are used for electronic applications such as car alarm installations and other audio applications.

Ring and Spade Terminals connect wires to a terminal. These are mainly used in battery hook-up, amplifier connection, speaker connection, and other various installation applications.
Connection Gender
This is the gender of the connector. Usually a specific type of connector will have both male and female connectors.

Please make sure that you order the correct gender of connector that is required for your installation.
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
Primary Color
This is the main color of the item.
Deals
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
Condition
Availability
filter-icon Filters & Sort

Metra 76-0600

6 Way Waterproof Connector

76-0600 big
Go to item page Right Arrow Icon of Right Arrow

Metra 76-0600

6 Way Waterproof Connector

• 6-way Universal Waterproof Connector

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $38.99
-10% $34.99

In stock

Only 1 Left!

Add to Cart

• 6-way Universal Waterproof Connector

Stinger SPTE5138

8 Gauge Expert Ground Terminal - Single Pack

SPTE5138 big
Go to item page Right Arrow Icon of Right Arrow

Stinger SPTE5138

8 Gauge Expert Ground Terminal - Single Pack

• Stinger Select Series
• Expert Ground Terminal
• 8 Gauge

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $14.98
-33% $9.99

In stock

Only 1 Left!

Add to Cart

• Stinger Select Series
• Expert Ground Terminal
• 8 Gauge

Stinger SPT5118B

Black 8 Gauge Barrier Spade Number 8 - 25 Pack

SPT5118B big
Go to item page Right Arrow Icon of Right Arrow

Stinger SPT5118B

Black 8 Gauge Barrier Spade Number 8 - 25 Pack

• Fork Spade #8 Opening
• Custom Installation Look
• Platinum Finish

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $69.00
-67% $22.99

Available

Ships in 10-14 days

Add to Cart

• Fork Spade #8 Opening
• Custom Installation Look
• Platinum Finish

Stinger SPT5118R

Red 8 Gauge Barrier Spade Number 8 - 25 Pack

SPT5118R big
Go to item page Right Arrow Icon of Right Arrow

Stinger SPT5118R

Red 8 Gauge Barrier Spade Number 8 - 25 Pack

• Fork Spade #8 Opening
• Custom Installation Look
• Platinum Finish

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $79.00
-75% $19.95

Available

Ships in 10-14 days

Add to Cart

• Fork Spade #8 Opening
• Custom Installation Look
• Platinum Finish

Install Bay 3MYVBC

3M Yellow 12/10 Gauge Vinyl Butt Connectors

3MYVBC big
Go to item page Right Arrow Icon of Right Arrow

Install Bay 3MYVBC

3M Yellow 12/10 Gauge Vinyl Butt Connectors

• Butt Connectors
• 12/10 Gauge
• Color: Yellow
• Vinyl Insulated
• Makes Crimping Wires Fast and Easy
• Offers a Solid Connection of Wires

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $37.99
-11% $33.99

In stock

Only 2 Left!

Add to Cart

• Butt Connectors
• 12/10 Gauge
• Color: Yellow
• Vinyl Insulated
• Makes Crimping Wires Fast and Easy
• Offers a Solid Connection of Wires

Stinger SPT5124B

4 Gauge Barrier Spade #8 - 25 Pack

SPT5124B big
Go to item page Right Arrow Icon of Right Arrow

Stinger SPT5124B

4 Gauge Barrier Spade #8 - 25 Pack

• Solid Brass Construction
• 4 Gauge Barrier Spade
• 25 Pack

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $99.00
-75% $24.99

Available

Ships in 10-14 days

Add to Cart

• Solid Brass Construction
• 4 Gauge Barrier Spade
• 25 Pack

Install Bay 5-Way Trailer Plugs (IBTH5P)

5-Way All-Copper Flat Trailer Wiring Plugs - Pack of 5

IBTH5P big
Go to item page Right Arrow Icon of Right Arrow

Install Bay 5-Way Trailer Plugs (IBTH5P)

5-Way All-Copper Flat Trailer Wiring Plugs - Pack of 5

• 5-Way Trailer Wiring Plugs
• Allows the hookup of three basic lighting functions
• Extra pin available to support another function
• 18-gauge color-coded wire
• Sold in packs of 5

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $25.48
-33% $16.99

Available

Ships in 10-14 days

Add to Cart

• 5-Way Trailer Wiring Plugs
• Allows the hookup of three basic lighting functions
• Extra pin available to support another function
• 18-gauge color-coded wire
• Sold in packs of 5

Install Bay 4-Way Trailer Plugs (IBTH4P)

4-Way All-Copper Trailer Wiring Plugs - Pack of 5

IBTH4P big
Go to item page Right Arrow Icon of Right Arrow

Install Bay 4-Way Trailer Plugs (IBTH4P)

4-Way All-Copper Trailer Wiring Plugs - Pack of 5

• 4-Way Trailer Wiring Plugs
• Allows the hookup of three basic lighting functions
• Extra pin available for a ground wire
• 18-gauge color-coded wire
• Sold in packs of 5

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $22.48
-33% $14.99

In stock

Only 2 Left!

Add to Cart

• 4-Way Trailer Wiring Plugs
• Allows the hookup of three basic lighting functions
• Extra pin available for a ground wire
• 18-gauge color-coded wire
• Sold in packs of 5

Stinger SPT5124R

4 Ga Barrier Spade #8 Red

SPT5124R big
Go to item page Right Arrow Icon of Right Arrow

Stinger SPT5124R

4 Ga Barrier Spade #8 Red

• Shoc-Krome Plating
• Solid Brass Construction
• Crimp-On Styler
• 25 Pack

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $99.00
-80% $19.99

Available

Ships in 10-14 days

Add to Cart

• Shoc-Krome Plating
• Solid Brass Construction
• Crimp-On Styler
• 25 Pack

Stinger SPT5104B

Pro Series 4 Gauge Input to 5/16" Black Ring Shoc-Krome - 25 Pack

SPT5104B big
Go to item page Right Arrow Icon of Right Arrow

Stinger SPT5104B

Pro Series 4 Gauge Input to 5/16" Black Ring Shoc-Krome - 25 Pack

• Pro Series Ring Terminals
• 25 Pack
• 4 gauge to 5/16

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $79.00
-76% $18.99

Available

Ships in 10-14 days

Add to Cart

• Pro Series Ring Terminals
• 25 Pack
• 4 gauge to 5/16

Install Bay IBWTH16

16 GA Waterproof 2 Conductor Plug-in Connector M/F 1 PC

IBWTH16 big
Go to item page Right Arrow Icon of Right Arrow

Install Bay IBWTH16

16 GA Waterproof 2 Conductor Plug-in Connector M/F 1 PC

• Quickly connect/disconnect applications easily in seconds
• Use this for power/ground and speaker wiring in Car, Marine, Motorcycle or Powersports applications
• Waterproof Connectors
• 2C Plug in Connector
• Male/Female
• 16 Gauge

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $6.99
-14% $5.99

Available

Ships in 10-14 days

Add to Cart

• Quickly connect/disconnect applications easily in seconds
• Use this for power/ground and speaker wiring in Car, Marine, Motorcycle or Powersports applications
• Waterproof Connectors
• 2C Plug in Connector
• Male/Female
• 16 Gauge

Belva BCC2218 (100-Pack)

22/18 Gauge Nylon Crimp Caps, 100/pack

BCC2218_4 big
Go to item page Right Arrow Icon of Right Arrow

Belva BCC2218 (100-Pack)

22/18 Gauge Nylon Crimp Caps, 100/pack

• 22/18 Gauge Nylon Crimp Cap
• Heat shrinkable Design
• Makes Crimping Wires Fast and Easy
• Offers a Solid Connection of Wires
• Gauge: 22/18
• Color: Clear
• Count: 25

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

4
List price $31.96
-50% $15.96

In stock

Add to Cart

• 22/18 Gauge Nylon Crimp Cap
• Heat shrinkable Design
• Makes Crimping Wires Fast and Easy
• Offers a Solid Connection of Wires
• Gauge: 22/18
• Color: Clear
• Count: 25

Stinger SPXRGBMF

Male-Female RGB Solder Connectors with Heat Shrink for Stinger SPXRGB5 (8-Pack)

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

Stinger SPXRGBMF

Male-Female RGB Solder Connectors with Heat Shrink for Stinger SPXRGB5 (8-Pack)

• Male-female RGB solder connectors with heat sink
• Use with Stinger SPXRGBC (sold separately)
• 8 Pack (4 male / 4 female)

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $19.00
-42% $11.00

Available

Ships in 10-14 days

Add to Cart

• Male-female RGB solder connectors with heat sink
• Use with Stinger SPXRGBC (sold separately)
• 8 Pack (4 male / 4 female)

Belva BA120PC

120pc of waterproof and sealed solder seal electrical heat shrink wire/butt connectors terminals

BA120PC big
Go to item page Right Arrow Icon of Right Arrow

Belva BA120PC

120pc of waterproof and sealed solder seal electrical heat shrink wire/butt connectors terminals

• Self-solder heat shrink butt connector
• Use a heat gun to evenly shrink the connectors together
•No need to crimp wire together
• Shrinkage ratio is 2:1

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

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

13
List price $19.99
-50% $9.99

In stock

Only 1 Left!

Add to Cart

• Self-solder heat shrink butt connector
• Use a heat gun to evenly shrink the connectors together
•No need to crimp wire together
• Shrinkage ratio is 2:1

Stinger SPT5118

PRO Series Spade Terminals 8 Gauge Barrier Spade #8 Opening Shoc-Krome

SPT5118 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Stinger SPT5118

PRO Series Spade Terminals 8 Gauge Barrier Spade #8 Opening Shoc-Krome

• Solid Brass allows for maximum power transfer
• 8 Gauge opening
• Crimp-on style
• Ideal for many car audio applications

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

2
List price $9.00
$8.99
Add to Cart

• Solid Brass allows for maximum power transfer
• 8 Gauge opening
• Crimp-on style
• Ideal for many car audio applications

Limited time!

NVX XWF04PK (Like New (Open Box))

4 pack 1/0 AWG Ferrule with NVX heat shrink

XWF04PK big
Go to item page Right Arrow Icon of Right Arrow

NVX XWF04PK (Like New (Open Box))

4 pack 1/0 AWG Ferrule with NVX heat shrink

• Prevents Wire Splitting when using Setscrew Terminals
• Fits 1/0 Gauge AWG Wire
• Includes (4) 0 Gauge Ferrules and (4) Heat Shrink

10% Off Open Box!
shipping truck icon Free shipping in USA. Provide zip for delivery date.

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $9.99
-24% $7.64
$6.88 with coupon | Price details

In stock

Only 1 Left!

Add to Cart

• Prevents Wire Splitting when using Setscrew Terminals
• Fits 1/0 Gauge AWG Wire
• Includes (4) 0 Gauge Ferrules and (4) Heat Shrink

Install Bay IBWTH12

Waterproof Connectors 12 Gauge - Each

IBWTH12 big Out of stock
Go to item page Right Arrow Icon of Right Arrow

Install Bay IBWTH12

Waterproof Connectors 12 Gauge - Each

• Waterproof Connectors
• 2C Plug in Connector
• Male/Female
• 12 Gauge

Universal Icon Universal – fits most vehicles.

Shop similar products or Update vehicle

List price $7.99
-13% $6.99
Add to Cart

• Waterproof Connectors
• 2C Plug in Connector
• Male/Female
• 12 Gauge

Prev 1 2 3

Items per page: 20 40 60

    Clear all
    why-shoping-with-sonic

    We love people and we're ready to help you! See what separates us from our competition.

    Take advantage of our VIP rewards like 10% back on your purchases, free 2-day shipping, extended warranties, and free returns! Gain access to all of these rewards without any membership fees.
    Get great discounted (and possibly FREE) installation accessories with most car stereo purchases. This includes dash kits, wiring harnesses and antenna adapters that you will need to properly install your new car stereo.
    We are an Authorized Dealer for all the brands we sell, including the most premium brands in car and marine audio such as Hertz, JL Audio, NVX, Rockford Fosgate, Kicker, Alpine, Kenwood and many more.
    Shop Deals and get up to 30% off premium brands! Shop Now! We are always looking out for the best products and deals to offer our customers. Don’t pay too much by shopping elsewhere!
    We have information on brands, gear, and more for you to explore! Check out our YouTube Channel for helpful how-to videos, product reviews, and Q&As. For a more detailed look, also visit our Learning Center!
    Our trained experts are here to assist you! They are just a phone call or click away to help you get the right gear for you and your vehicle!
    Why Shop With Us?
    FAQ for Universal-Fit Audio & Electronics in 2011 A4

    Q: Can I upgrade or change the Universal-Fit Audio & Electronics in 2011 Audi A4?

    A: Yes this page includes all the best Universal-Fit Audio & Electronics that work in your A4.

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

    2008 BMW 335xi

    2011 Audi A4

    2025 Genesis G90

    2003 Land Rover Freelander

    2022 Dodge Durango

    1965 Cadillac DeVille

    2006 MINI Cooper

    1978 Jeep J20

    2010 Ford Flex

    2007 Audi A4 Quattro

    Vehicle
    Store     Delete

    2004 Harley Davidson FLHTCSE Screamin Eagle Electra Glide

    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

    Cancel

    This category was not designed for products.
    If you continue, you will be redirected to a category customized for your vehicle. Continue

    Cancel

    Shop your 2011 A4
    Why Use a Vehicle Fit Guide?
    Change vehicle | Shop without vehicle
    Whoa! Slow down. Add your details below!
    additional information required
    Add vehicle details to confirm fitment
    Ignore fitment details
    Find stereos and more that work -- fast.

    Additional information:

    Remove

    Can't find your vehicle? Click here and we'll help.

    Where to find vehicle info

    Go to Fitment

    Didn't find your car?

    Submit your details and we'll help!
    Please enter the letters as they are shown in the image above. Letters are not case-sensitive.
    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
    Back

    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.

    Back
    Track your order
    Call our experts
    Support Center
    Return & Exchanges
    Follow on Instagram Instagram logo
    Subscribe on YouTube YouTube logo