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Audi Subwoofer Upgrade Kit

From: Original price was: $359.98.Current price is: $347.98.

Plug and Play upgrade subwoofer Upgrade Audi Q8 2019-2026

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Compatible cars

You can send us your VIN if you don’t know what you need.

Audi A6 20119-2024
Send us your vin for configuration
Subwoofer Part numbers – 4K2035913 4K0035913 4K8035913 4K2035914 4K0035914 4K8035914 4K0035915 4K8035915

Audi Q7
4M0 035 621 – 2 pin 2 Wire (small woofer maybe 6″)
4M0 035 621 A – 4 Pin 2 Wires (1200)
4M0 035 621 B
4M0 035 621 F 2 pin 2 Wires (12)
4M0 035 621 G
4M0 035 621 H
4M0 035 621 J 4 Pin 4 Wires (1234)
4M0 035 621 L
4M0 035 621 M

Audi Q8 2019-2026
4M8 035 621 A – 4 Pin 4 Wires (1234)
4M8 035 621 – 4 Pin 2 Wires (1004) – 6.75″ woofer – Needs AUD-SWSMR speaker adapter
4M8 035 621 B – 2 pin 2 Wires (12) – B&O – 8″ woofer

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Excellent

Based on 251 reviews

I bought a Dension box to add Bluetooth to my 07 Audi A4. It plugged right into the old CD cable but was not active. After trying some YouTube videos I...

Mike S

This is the only place you should be going to in your R8 for a modern century radio/head unit. Amazing car, awful radio.
Christian is a true perfectionist and it shows in his work. Gorgeous job on my new Sony XAV-AX6000. It looks stock which was extremely important to me. Kept the factory backup camera and works perfectly. Christian even custom programmed the wheel buttons to my needs. It has the gauge read out via obd2 on the Somy screen which comes on with a button on the wheel, so cool.
It picks my phone up on Apple play before the car comes off idle. Incredibly fast radio start up. It also has buttons!! Estoy muy veijo. Yo me gusto buttons!
Christian get ready for my wife’s Accord. She wants the Sony in her car now.

Michael Bible

Ordered an amplifier with a plug and play harness from Enfig and I couldn't be more satisfied with the results after installation. Shipment was fast and helpful instructions were included from the owner. I definitely recommend this company!

Henry

Steven Yau

Enfig has the wire adapter that the other major car stereo place does not offer. I emailed my needs and got a nice detailed list of everything I need with links. The wiring harness is literally plug and play without any wire splicing. The adapter kit is much nicer too and blends in nicely with the factory trims.

Timothy Gonzalez

I found Enfig Car Stereo through a YouTube video explaining the exact system that was going into my wife’s car. I reached out and found out not only did he produce a custom harness so I could hook up the amp with no wire splicing, simply plug and play but he also went above and beyond on the install. He made custom 3D printed mounting rings for all 4 door speakers and tweeters! He tuned my kicker key amp, set gains and all. Everything fits and works perfectly and I couldn’t be happier. I’m coming back for my sub install. Can’t recommend him enough.

Todd Borden

I purchased a Ram retro-fit microphone. Great item. Installed easily and fit as described. The video was helpful. Sound quality is also much better. Thank you.

Brian P

Purchased the Enfig MIC-UNI2 universal headliner microphone. Great company to buy from with great customer service. Very reasonably priced for custom products. Everyone says the quality is night and day compared to the cheap mics that come with radios. Thanks Enfig.