The 2018 BMW 318I has 44 electrical bulb & socket parts with verified fitment on this page — 8 part types and 4 brands, covering the 1.5L L3 Turbocharged engine. Each part includes a manufacturer part number and application notes.
On the 2018 BMW 318I, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. Most of the listed parts are Headlamp Bulb (12 parts), Parking Lamp Bulb (8 parts) and Turn Signal Lamp Bulb (7 parts). The other 5 part types cover the remaining 17 parts.
The 2018 BMW 318I came with a single engine, the 1.5L L3 Turbocharged, and every part is verified against it.
4 brands supply electrical bulb & socket parts for the 2018 BMW 318I, led by SYLVANIA (15 parts), WAGNER (15 parts) and HELLA (8 parts), plus 1 more brand. Quality grades include Standard Replacement, Extended Life and Extra Bright.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2018 BMW 318I. 10 parts have it, including HELLA H21W (Brake Light Bulb) and HELLA 2825 (Dome Light Bulb). Each part number opens a page with every vehicle that part fits.
Brake Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA | 64136LL | 🇲🇽 MX | Long LifeBase Type: BAY9S | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular | H21W | 🇲🇽 MX | HalogenSocket Type Bulb: BAY9S | View on Amazon |
| PHILIPS | H21W | 🇲🇽 MX | Adaptive | View on Amazon |
| SYLVANIA | 64136 | 🇲🇽 MX | with Adaptive Lighting | View on Amazon |
| WAGNER | 64136 | 🇲🇽 MX | with Adaptive Lighting | View on Amazon |
This table covers the bulbs in the stop 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 Brake Light Bulb parts for the 2018 BMW 318I come from 4 brands — SYLVANIA, HELLA, PHILIPS and 1 other brand. The "Popular" part is HELLA H21W.
In the Extended Life grade, SYLVANIA 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 SYLVANIA 64136LL.
In the Standard Replacement grade, HELLA, PHILIPS, SYLVANIA and 1 other brand supply 4 parts: built to original-equipment specification. A representative part number is HELLA H21W.
This group includes HELLA H21W and SYLVANIA 64136LL and the remaining parts above.
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 for the 2018 BMW 318I come from 2 brands — WAGNER and HELLA. The "Popular" part is HELLA 2825.
Extended Life: 1 part, from WAGNER. A representative part number is WAGNER 17177LL.
The LED (instant-on, long life, energy-saving) section lists 1 option from WAGNER — grouped under the catalog's "LED (instant-on, long life, energy-saving)" designation — the notes column spells out what sets them apart. WAGNER T10LED is listed in this group.
Standard Replacement: 3 parts, from HELLA and WAGNER. A representative part number is HELLA 2825.
Part numbers include HELLA 2825, WAGNER 17177LL and WAGNER T10LED, among others listed above.
Fog / Driving Lamp Bulb
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA | H8LEDSP | 🇲🇽 MX | LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Popular | 1235H8 | 🇲🇽 MX | Front | View on Amazon |
| HELLA | H8 | 🇲🇽 MX | HalogenSocket Type Bulb: PGJ19-1 | View on Amazon |
| PHILIPS | H8 | 🇲🇽 MX | Frontwith Halogen Capsule Headlamps | View on Amazon |
| SYLVANIA | H8 | 🇲🇽 MX | Base Type: PGJ19-1Wattage: 35.00 W | 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.
5 Fog / Driving Lamp Bulb parts are listed for the 2018 BMW 318I, from SYLVANIA, WAGNER, HELLA and 1 other brand. WAGNER 1235H8 carries the "Popular" badge.
LED (instant-on, long life, energy-saving): 1 part, from SYLVANIA. A representative part number is SYLVANIA H8LEDSP.
The Standard Replacement section: 4 options from WAGNER, HELLA, PHILIPS and 1 other brand. WAGNER 1235H8 is listed in this group.
Listed part numbers: WAGNER 1235H8, SYLVANIA H8LEDSP and HELLA H8, plus the other parts above.
Headlamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA | H7LL | 🇲🇽 MX | Long Life | View on Amazon |
| WAGNER | 1255H7LL | 🇲🇽 MX | Long Life | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Popular | H7BLX | 🇲🇽 MX | BritelitePX26D Base | View on Amazon |
| SYLVANIA | H7XV | 🇲🇽 MX | Xtra VisionColor Temperature: 3200 KV | View on Amazon |
| SYLVANIA | H7ST | 🇲🇽 MX | Color Temperature: 4000 KVSilver Star | View on Amazon |
| SYLVANIA | H7SU | 🇲🇽 MX | Silver Star UltraColor Temperature: 4100 KV | View on Amazon |
| SYLVANIA | H7SZG | 🇲🇽 MX | Silver Star zXe GOLDColor Temperature: 4200 KV | View on Amazon |
| WAGNER | H7TVX | 🇲🇽 MX | Truview PlusPX26D 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 |
| SYLVANIA | H7 | 🇲🇽 MX | Base Type: PX26DWattage: 55.00 W | 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.
12 Headlamp Bulb parts are listed for the 2018 BMW 318I, from SYLVANIA, WAGNER and HELLA. WAGNER H7BLX carries the "Popular" badge.
The Extended Life section: 2 options from SYLVANIA and WAGNER. SYLVANIA H7LL is listed in this group.
The Extra Bright (improved visibility, but shorter life) section lists 6 options from SYLVANIA and WAGNER — grouped under the catalog's "Extra Bright (improved visibility, but shorter life)" designation — the notes column spells out what sets them apart. WAGNER H7BLX is listed in this group.
The Standard Replacement section: 4 options from WAGNER, HELLA and SYLVANIA. HELLA H7 is listed in this group.
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.
One part is listed for the 2018 BMW 318I — WAGNER CBH8H11H16.
Parking Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Popular | 3457NALL | 🇲🇽 MX | Longer LifeNatural Amber | View on Amazon |
| SYLVANIA Popular | 3457ALL | 🇲🇽 MX | Long LifeAmber | View on Amazon |
| PHILIPS | 3357NALL | 🇲🇽 MX | Longer LifeNatural Amber | View on Amazon |
| WAGNER | 3457NALL | 🇲🇽 MX | Long LifeNatural Amber | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA | 3457ASL | 🇲🇽 MX | LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 3457NA | 🇲🇽 MX | Brightness: 30.0 CPIncandescent | View on Amazon |
| SYLVANIA | 3457A | 🇲🇽 MX | Amber | View on Amazon |
| WAGNER | 3457NA | 🇲🇽 MX | Natural AmberDouble Contact Wedge Base | View on Amazon |
This table covers the bulbs in the parking 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.
8 Parking Lamp Bulb parts are listed for the 2018 BMW 318I, from SYLVANIA, PHILIPS, WAGNER and 1 other brand. PHILIPS 3457NALL carries the "Popular" badge.
The Extended Life section: 4 options from PHILIPS, SYLVANIA and WAGNER. PHILIPS 3457NALL is listed in this group.
LED (instant-on, long life, energy-saving): 1 part, from SYLVANIA. A representative part number is SYLVANIA 3457ASL.
The Standard Replacement section: 3 options from HELLA, SYLVANIA and WAGNER. HELLA 3457NA is listed in this group.
Part numbers include PHILIPS 3457NALL, SYLVANIA 3457ALL and PHILIPS 3357NALL, among others listed 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.
One part is listed for the 2018 BMW 318I — HELLA 2825.
Turn Signal Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Popular | 3457NALL | 🇲🇽 MX | Longer LifeNatural Amber | View on Amazon |
| SYLVANIA Popular | 3457ALL | 🇲🇽 MX | Long LifeAmber | View on Amazon |
| PHILIPS | 3357NALL | 🇲🇽 MX | Longer LifeNatural Amber | View on Amazon |
| WAGNER | 3457NALL | 🇲🇽 MX | Long LifeNatural Amber | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA | 3457NA | 🇲🇽 MX | Brightness: 30.0 CPIncandescent | View on Amazon |
| SYLVANIA | 3457A | 🇲🇽 MX | Amber | View on Amazon |
| WAGNER | 3457NA | 🇲🇽 MX | Natural AmberDouble Contact Wedge 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.
7 Turn Signal Lamp Bulb parts for the 2018 BMW 318I come from 4 brands — PHILIPS, SYLVANIA, WAGNER and 1 other brand. The "Popular" part is PHILIPS 3457NALL.
Extended Life: 4 parts, from PHILIPS, SYLVANIA and WAGNER. A representative part number is PHILIPS 3457NALL.
Standard Replacement: 3 parts, from HELLA, SYLVANIA and WAGNER. A representative part number is HELLA 3457NA.
Listed part numbers: PHILIPS 3457NALL, SYLVANIA 3457ALL and PHILIPS 3357NALL, plus the other parts above.
Buying Electrical Bulb & Socket Parts for a 2018 BMW 318I
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 1.5L L3 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 Parking Lamp Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2018 BMW 318I?
Our catalog currently lists 44 electrical bulb & socket parts for the 2018 BMW 318I across 8 subcategories and 4 brands, covering the 1.5L L3 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 318I?
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 318I 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 318I?
Every part on this page is matched to the 1.5L L3 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 318I
Switch vehicle or jump to a subcategory
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.