The 2020 BMW 420I has 5 electrical bulb & socket parts with verified fitment on this page — 3 part types and 2 brands, covering the 2.0L L4 Turbocharged engine. Each part includes a manufacturer part number and application notes.
The bulb and socket system on the 2020 BMW 420I covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. All 5 listed parts are Glove Box Light Bulb (2 parts), Vanity Mirror / Sun Visor Light Bulb (2 parts) and Tail Lamp Bulb (1 part).
Every part on this page is matched to the 2.0L L4 Turbocharged — the only engine offered in the 2020 BMW 420I.
The most listed brands for 2020 BMW 420I electrical bulb & socket parts are HELLA (4 parts) and PHILIPS (1 part). Quality grades include Extended Life and Standard Replacement.
Each part number listed for the 2020 BMW 420I opens a page with every vehicle that part fits.
Glove Box Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 2825 | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA | 2825BL | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
This table covers the bulbs in the glove-box lamp. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
2 Glove Box Light Bulb parts for the 2020 BMW 420I come from HELLA.
Part numbers include HELLA 2825 and HELLA 2825BL.
Tail Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 2825 | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
This table covers the bulbs in the tail lamps. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
This group shows a single part: HELLA 2825.
Vanity Mirror / Sun Visor Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS | 12505LL | 🇲🇽 MX | Longer Life | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 2723 | 🇲🇽 MX | HalogenSocket Type Bulb: W2X4.6d | View on Amazon |
This table covers the replacement bulbs for the Vanity Mirror / Sun Visor Light. Typical signs include a dark lamp, flicker, or a bulb that keeps failing in one socket. If the same position keeps failing, replace the socket or repair the ground rather than chasing bulbs.
2 Vanity Mirror / Sun Visor Light Bulb parts for the 2020 BMW 420I come from 2 brands — PHILIPS and HELLA.
In the Extended Life grade, PHILIPS supplies 1 part: grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. A representative part number is PHILIPS 12505LL.
In the Standard Replacement grade, HELLA supplies 1 part: built to original-equipment specification. A representative part number is HELLA 2723.
Part numbers include PHILIPS 12505LL and HELLA 2723.
Buying Electrical Bulb & Socket Parts for a 2020 BMW 420I
On this vehicle, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination.
- Confirm you have the 2.0L L4 Turbocharged engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace bulbs in pairs so both sides age together, and put a smear of dielectric grease on the new socket contacts.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Glove Box Light Bulb and Vanity Mirror / Sun Visor Light Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2020 BMW 420I?
Our catalog currently lists 5 electrical bulb & socket parts for the 2020 BMW 420I across 3 subcategories and 2 brands, covering the 2.0L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical bulb & socket problems on a 2020 BMW 420I?
Common symptoms include a lamp that flickers over bumps, melted or discolored socket plastic, or bulbs that keep failing early on one side. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace bulbs in pairs so both sides age together, and put a smear of dielectric grease on the new socket contacts.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2020 BMW 420I was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2020 BMW 420I?
Every part on this page is matched to the 2.0L L4 Turbocharged engine. Then repeated bulb failure in one position usually means a socket or ground problem, not bad bulbs — replace the socket rather than chase it. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2020 BMW 420I
Electrical Bulb & Socket Parts for Other BMW 420I Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.