Pioneer TS-A878 3.5-inch Coaxial Speakers
- 15 W nominal
- Custom-fit basket
- 3 in cutout
Approximate installed estimate $200 parts $50 + labor $150
In-store pickupPaid at the shop.
Call, text or come by for your exact price and package deals.
2017–2020 BMW 4 Series stereo and speaker fit
In the 2017–2020 BMW 4 Series, the factory radio can't be swapped for a standard aftermarket stereo, so the usual upgrade is speakers, an amp, a processor or a sub. Factory speaker sizes: 3.5" center dash. Audio MotorSports in Carson stocks stereos and speakers that fit and installs them in its own bay, often the same day.
What fits the 2017–2020 BMW 4 Series
| Vehicle | Dash opening | Front doors | Center dash | Rear side panels |
|---|---|---|---|---|
| 2017–2020 BMW 4 Series | Factory radio can't be swapped for a standard aftermarket stereo ✓ Verified | Confirm at the shop | 3.5" ✓ Verified | Confirm at the shop |
In stock in Carson
Gear for the 2017–2020 BMW 4 Series
Kicker DS 43DSC3504 3.5-inch Coaxial Speakers
- 20 W RMS
- 88 dB sensitivity
- 3 in cutout
Approximate installed estimate $204.99 parts $54.99 + labor $150
In-store pickupPaid at the shop.
Call, text or come by for your exact price and package deals.
Pick your exact year and trim in Shop by vehicle; we confirm the fit before you buy.
Install notes for the 2017–2020 BMW 4 Series
- Some trims have factory Harman Kardon premium sound, which can wire differently; we check your trim before you buy.
- Not confirmed yet: front doors and rear side panels. These say "Confirm at the shop" until our sources agree; we check them with your trim.
Local pickup and install in Carson
In-store pickup at 22025 S Avalon Blvd Ste A, Carson. Paid at the shop. Buy now, pay later with the Payment Plan (Synchrony, Zelle, Venmo, PayPal, crypto, credit cards over the phone).
Sizes marked "Confirm at the shop" are ones our sources do not agree on yet, or that change by trim or premium audio. We confirm before you buy. Fit data checked against Metra dash kit and speaker guides and published vehicle fitment data and Crutchfield vehicle research.
Speaker upgrade
More for your BMW 4 Series
BMW 4 Series speaker upgrade guide
Car guides: Keeping the factory radio · Speakers, sub or amp: where to start
Other BMW 4 Series years
2017–2020 BMW 4 Series stereo and speaker fit: questions
What size speakers are in the 2017–2020 BMW 4 Series?
3.5" center dash. We stock speakers in these sizes in Carson and install them.
Does the 2017–2020 BMW 4 Series have a premium sound system?
Some trims have factory Harman Kardon premium sound, which can wire differently. We check your trim before you buy.
Are all the speaker sizes for the 2017–2020 BMW 4 Series confirmed?
Not yet: front doors and rear side panels still say "Confirm at the shop". Text us with your trim and we will check.
Can we install it?
Yes. Bring the 2017–2020 BMW 4 Series to 22025 S Avalon Blvd Ste A, Carson. We confirm the trim and install in our own bay, often the same day. Text or call us.