This page lists 21 electrical bulb & socket parts for the 2025 Kia K4, across 6 part types, covering both the 1.6L L4 Turbocharged and the 2.0L L4. Every part shows its brand, manufacturer part number and fitment notes.
On the 2025 Kia K4, 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 Brake Light Bulb (5 parts), Trunk / Cargo Area Light Bulb (5 parts) and Back Up / Reverse Lamp Bulb (3 parts). The other 3 part types cover the remaining 8 parts.
The 2025 Kia K4 was sold with both the 1.6L L4 Turbocharged and the 2.0L L4. All 21 parts on this page fit every engine.
The most listed brands for 2025 Kia K4 electrical bulb & socket parts are SYLVANIA (16 parts) and PHILIPS (5 parts). Quality grades include Extended Life, Standard Replacement and Extra Bright.
2 parts on this 2025 Kia K4 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including PHILIPS P215WLL (Brake Light Bulb) and SYLVANIA 6418SL (Trunk / Cargo Area Light Bulb). Click any part number to see every vehicle that part fits.
Back Up / Reverse Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2025 K4 engines | 7506LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: BA15S | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2025 K4 engines | 7506ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Cool WhiteSilver Star | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2025 K4 engines | 7506 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: BA15SWattage: 25.00 W | 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.
SYLVANIA supplies the 3 Back Up / Reverse Lamp Bulb parts for the 2025 Kia K4. All of them fit every engine offered in the 2025 K4.
The Extended Life section lists 1 option from SYLVANIA — grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. SYLVANIA 7506LL is listed in this group.
The Extra Bright (improved visibility, but shorter life) section lists 1 option from SYLVANIA — grouped under the catalog's "Extra Bright (improved visibility, but shorter life)" designation — the notes column spells out what sets them apart. SYLVANIA 7506ST is listed in this group.
The Standard Replacement section lists 1 option from SYLVANIA — built to original-equipment specification. SYLVANIA 7506 is listed in this group.
This group includes SYLVANIA 7506LL, SYLVANIA 7506ST and SYLVANIA 7506.
Brake Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Popular Fits: all 2025 K4 engines | P215WLL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Longer Life | View on Amazon |
| SYLVANIA Fits: all 2025 K4 engines | 7506LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: BA15S | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2025 K4 engines | 7506ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Cool WhiteSilver Star | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2025 K4 engines | P215W | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| SYLVANIA Fits: all 2025 K4 engines | 7506 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: BA15SWattage: 25.00 W | 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 are listed for the 2025 Kia K4, from SYLVANIA and PHILIPS. PHILIPS P215WLL carries the "Popular" badge. All of them fit every engine offered in the 2025 K4.
The Extended Life section: 2 options from PHILIPS and SYLVANIA. PHILIPS P215WLL is listed in this group.
The Extra Bright (improved visibility, but shorter life) section: 1 option from SYLVANIA. SYLVANIA 7506ST is listed in this group.
The Standard Replacement section: 2 options from PHILIPS and SYLVANIA. PHILIPS P215W is listed in this group.
This group includes PHILIPS P215WLL, SYLVANIA 7506LL and SYLVANIA 7506ST and the remaining parts above.
Brake Light Bulb - High Mount
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2025 K4 engines | 7506LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: BA15S | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2025 K4 engines | 7506ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Cool WhiteSilver Star | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2025 K4 engines | 7506 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: BA15SWattage: 25.00 W | View on Amazon |
This table covers the bulbs in the high-mount stop lamp. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes.
SYLVANIA supplies the 3 Brake Light Bulb - High Mount parts for the 2025 Kia K4. All of them fit every engine offered in the 2025 K4.
The Extended Life section: 1 option from SYLVANIA. SYLVANIA 7506LL is listed in this group.
The Extra Bright (improved visibility, but shorter life) section: 1 option from SYLVANIA. SYLVANIA 7506ST is listed in this group.
The Standard Replacement section: 1 option from SYLVANIA. SYLVANIA 7506 is listed in this group.
This group includes SYLVANIA 7506LL, SYLVANIA 7506ST and SYLVANIA 7506.
Tail Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2025 K4 engines | P215WLL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Longer Life | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2025 K4 engines | P215W | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
2 Tail Lamp Bulb parts for the 2025 Kia K4 come from PHILIPS. Every part fits both the 1.6L L4 Turbocharged and the 2.0L L4.
Extended Life: 1 part, from PHILIPS. A representative part number is PHILIPS P215WLL.
Standard Replacement: 1 part, from PHILIPS. A representative part number is PHILIPS P215W.
Part numbers include PHILIPS P215WLL and PHILIPS P215W.
Trunk / Cargo Area Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2025 K4 engines | 6418LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: Festoon | View on Amazon |
HID (intense white light)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2025 K4 engines | DE3423LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Longer Life | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: all 2025 K4 engines | 6418SL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDCool White | View on Amazon |
| SYLVANIA Fits: all 2025 K4 engines | 6418LED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | ZEVOCool White | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2025 K4 engines | 6418 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: SVWattage: 5.00 W | View on Amazon |
This table covers the bulbs in the trunk or cargo-area 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 Trunk / Cargo Area Light Bulb parts for the 2025 Kia K4 come from 2 brands — SYLVANIA and PHILIPS. The "Popular" part is SYLVANIA 6418SL. Every part fits both the 1.6L L4 Turbocharged and the 2.0L L4.
Extended Life: 1 part, from SYLVANIA. A representative part number is SYLVANIA 6418LL.
In the HID (intense white light) grade, PHILIPS supplies 1 part: grouped under the catalog's "HID (intense white light)" designation — the notes column spells out what sets them apart. A representative part number is PHILIPS DE3423LL.
The LED (instant-on, long life, energy-saving) section lists 2 options from SYLVANIA — grouped under the catalog's "LED (instant-on, long life, energy-saving)" designation — the notes column spells out what sets them apart. SYLVANIA 6418SL is listed in this group.
Standard Replacement: 1 part, from SYLVANIA. A representative part number is SYLVANIA 6418.
Listed part numbers: SYLVANIA 6418SL, SYLVANIA 6418LL and PHILIPS DE3423LL, plus the other parts above.
Turn Signal Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2025 K4 engines | 7506LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: BA15S | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2025 K4 engines | 7506ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Cool WhiteSilver Star | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2025 K4 engines | 7506 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: BA15SWattage: 25.00 W | 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.
SYLVANIA supplies the 3 Turn Signal Lamp Bulb parts for the 2025 Kia K4. All of them fit every engine offered in the 2025 K4.
The Extended Life section: 1 option from SYLVANIA. SYLVANIA 7506LL is listed in this group.
The Extra Bright (improved visibility, but shorter life) section: 1 option from SYLVANIA. SYLVANIA 7506ST is listed in this group.
The Standard Replacement section: 1 option from SYLVANIA. SYLVANIA 7506 is listed in this group.
This group includes SYLVANIA 7506LL, SYLVANIA 7506ST and SYLVANIA 7506.
Buying Electrical Bulb & Socket Parts for a 2025 Kia K4
On this vehicle, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination.
- You do not need to pick an engine: every electrical bulb & socket part on this page fits both the 1.6L L4 Turbocharged and the 2.0L L4.
- 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: Brake Light Bulb and Trunk / Cargo Area Light Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2025 Kia K4?
Our catalog currently lists 21 electrical bulb & socket parts for the 2025 Kia K4 across 6 subcategories and 2 brands, covering both the 1.6L L4 Turbocharged and the 2.0L L4. Each part is matched to the engine(s) it fits.
Do electrical bulb & socket parts differ between 2025 Kia K4 engines?
No. On this page every electrical bulb & socket part fits both the 1.6L L4 Turbocharged and the 2.0L L4. You do not need to pick an engine to choose the right row — use the notes for position and trim.
What are the signs of electrical bulb & socket problems on a 2025 Kia K4?
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 2025 Kia K4 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 2025 Kia K4?
Every part on this page already fits both the 1.6L L4 Turbocharged and the 2.0L L4. 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 2025 Kia K4
Electrical Bulb & Socket Parts for Other Kia K4 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.