The 2018 BMW 120I has 27 electrical bulb & socket parts with verified fitment on this page — 9 part types and 4 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 2018 BMW 120I covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. The largest groups are Headlamp Bulb (6 parts), Dome Light Bulb (5 parts) and Map / Reading Light Bulb (5 parts). The other 6 part types cover the remaining 11 parts.
Every part on this page is matched to the 2.0L L4 Turbocharged — the only engine offered in the 2018 BMW 120I.
The most listed brands for 2018 BMW 120I electrical bulb & socket parts are WAGNER (15 parts), HELLA (9 parts) and STANDARD MOTOR PRODUCTS (2 parts), plus 1 more brand. Quality grades include Standard Replacement, Extended Life and Extra Bright.
4 parts on this 2018 BMW 120I page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including HELLA 2825 (Dome Light Bulb) and HELLA H7 (Headlamp Bulb). Click any part number to see every vehicle that part fits.
Back Up / Reverse Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 7507 | 🇲🇽 MX | IncandescentSocket Type Bulb: S8.5d or Socket Type Bulb: BAU15S | View on Amazon |
This table covers the bulbs in the reverse 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.
One part is listed for the 2018 BMW 120I — HELLA 7507.
Dome Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER | 17177LL | 🇲🇽 MX | Long LifeW2.1x9.5d Base | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER | T10LED | 🇲🇽 MX | Tru View PLUS LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular | 2825 | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA | 2825BL | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| WAGNER | 17177 | 🇲🇽 MX | W2.1x9.5d Base5.000 Watt | View on Amazon |
This table covers the bulbs in the dome 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.
5 Dome Light Bulb parts are listed for the 2018 BMW 120I, from WAGNER and HELLA. HELLA 2825 carries the "Popular" badge.
The Extended Life section lists 1 option from WAGNER — grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. WAGNER 17177LL is listed in this group.
In the LED (instant-on, long life, energy-saving) grade, WAGNER supplies 1 part: grouped under the catalog's "LED (instant-on, long life, energy-saving)" designation — the notes column spells out what sets them apart. A representative part number is WAGNER T10LED.
The Standard Replacement section lists 3 options from HELLA and WAGNER — built to original-equipment specification. HELLA 2825 is listed in this group.
Listed part numbers: HELLA 2825, WAGNER 17177LL and WAGNER T10LED, plus the other parts above.
Fog / Driving Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | H8 | 🇲🇽 MX | HalogenSocket Type Bulb: PGJ19-1 | View on Amazon |
| PHILIPS | H8 | 🇲🇽 MX | Frontwith Halogen Capsule Headlamps | View on Amazon |
| WAGNER | 1235H8 | 🇲🇽 MX | Front | View on Amazon |
This table covers the bulbs in the fog and driving 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.
3 Fog / Driving Lamp Bulb parts for the 2018 BMW 120I come from 3 brands — HELLA, PHILIPS and WAGNER.
This group includes HELLA H8 and WAGNER 1235H8 and the remaining parts above.
Headlamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER | 1255H7LL | 🇲🇽 MX | Long Life | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER | H7TVX | 🇲🇽 MX | Truview PlusPX26D Base | View on Amazon |
| WAGNER | H7BLX | 🇲🇽 MX | BritelitePX26D Base | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular | H7 | 🇲🇽 MX | HalogenSocket Type Bulb: PX26D | View on Amazon |
| WAGNER Popular | 1255H7 | 🇲🇽 MX | Fits High BeamHalogen Capsule | View on Amazon |
| WAGNER | 2475H7 | 🇲🇽 MX | Fits High Beam24 Volt | View on Amazon |
This table covers the bulbs that light the headlamps. Typical signs include a dark lamp, a flicker over bumps, or a bulb that keeps failing on one side. Avoid touching a halogen capsule. Repeated failure in one socket is usually the socket or ground, not the bulb.
6 Headlamp Bulb parts for the 2018 BMW 120I come from 2 brands — WAGNER and HELLA. The "Popular" part is HELLA H7.
Extended Life: 1 part, from WAGNER. A representative part number is WAGNER 1255H7LL.
In the Extra Bright (improved visibility, but shorter life) grade, WAGNER supplies 2 parts: grouped under the catalog's "Extra Bright (improved visibility, but shorter life)" designation — the notes column spells out what sets them apart. A representative part number is WAGNER H7TVX.
Standard Replacement: 3 parts, from WAGNER and HELLA. A representative part number is HELLA H7.
Part numbers include HELLA H7, WAGNER 1255H7LL and WAGNER H7TVX, among others listed above.
Headlamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS | HP4355 | 🇲🇽 MX | Handy PackBlack | View on Amazon |
| STANDARD MOTOR PRODUCTS | S900 | 🇲🇽 MX | Connector Shape: Rectangleblack | View on Amazon |
This table covers the sockets that hold a headlamp bulb in the housing. Typical signs include a flicker over bumps, melted plastic, or a bulb that will not stay seated. Dielectric grease on the contacts slows corrosion. Do not force a bulb into a heat-damaged socket.
2 Headlamp Socket parts for the 2018 BMW 120I come from STANDARD MOTOR PRODUCTS.
This group includes STANDARD MOTOR PRODUCTS HP4355 and STANDARD MOTOR PRODUCTS S900.
LED Bulb Adapter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER | CBH8H11H16 | 🇲🇽 MX | For H8 / H11 / H16 Bulb | View on Amazon |
This table covers the LED Bulb adapters.
This group shows a single part: WAGNER CBH8H11H16.
Map / Reading Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER | 17177LL | 🇲🇽 MX | Long LifeW2.1x9.5d Base | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER | T10LED | 🇲🇽 MX | Tru View PLUS LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular | 2825 | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| HELLA | 2825BL | 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| WAGNER | 17177 | 🇲🇽 MX | W2.1x9.5d Base5.000 Watt | View on Amazon |
This table covers the bulbs in the map / reading 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.
5 Map / Reading Light Bulb parts are listed for the 2018 BMW 120I, from WAGNER and HELLA. HELLA 2825 carries the "Popular" badge.
The Extended Life section: 1 option from WAGNER. WAGNER 17177LL is listed in this group.
LED (instant-on, long life, energy-saving): 1 part, from WAGNER. A representative part number is WAGNER T10LED.
The Standard Replacement section: 3 options from HELLA and WAGNER. HELLA 2825 is listed in this group.
Listed part numbers: HELLA 2825, WAGNER 17177LL and WAGNER T10LED, plus the other parts above.
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.
Turn Signal Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER | 17638NALL | 🇲🇽 MX | Long LifeNatural Amber | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 7507 | 🇲🇽 MX | IncandescentSocket Type Bulb: S8.5d or Socket Type Bulb: BAU15S | View on Amazon |
| WAGNER | 17638NA | 🇲🇽 MX | Natural AmberBAU15S Base | View on Amazon |
This table covers the bulbs in the turn-signal 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.
3 Turn Signal Lamp Bulb parts are listed for the 2018 BMW 120I, from WAGNER and HELLA.
The Extended Life section: 1 option from WAGNER. WAGNER 17638NALL is listed in this group.
The Standard Replacement section: 2 options from HELLA and WAGNER. HELLA 7507 is listed in this group.
Listed part numbers: WAGNER 17638NALL, HELLA 7507 and WAGNER 17638NA.
Buying Electrical Bulb & Socket Parts for a 2018 BMW 120I
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: Headlamp Bulb and Dome Light Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2018 BMW 120I?
Our catalog currently lists 27 electrical bulb & socket parts for the 2018 BMW 120I across 9 subcategories and 4 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 2018 BMW 120I?
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 2018 BMW 120I 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 2018 BMW 120I?
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 2018 BMW 120I
Electrical Bulb & Socket Parts for Other BMW 120I 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.