The 2018 Jaguar XJ has 17 electrical bulb & socket parts with verified fitment on this page — 4 part types and 4 brands, covering both the 3.0L V6 Supercharged and the 5.0L V8 Supercharged. Each part includes a manufacturer part number and application notes.
On the 2018 Jaguar XJ, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. 16 parts of the 17 listed are Door Panel Light Bulb (7 parts), License Plate Lamp Bulb (7 parts) and Step / Courtesy Light Bulb (2 parts). The other 1 part type covers the remaining 1 part.
The 2018 Jaguar XJ was sold with both the 3.0L V6 Supercharged and the 5.0L V8 Supercharged. All 17 parts on this page fit every engine.
The most listed brands for 2018 Jaguar XJ electrical bulb & socket parts are SYLVANIA (8 parts), WAGNER (6 parts) and HELLA (2 parts), plus 1 more brand. Quality grades include Standard Replacement, Extended Life and LED.
4 parts on this 2018 Jaguar XJ page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including SYLVANIA 6418SL (Door Panel Light Bulb) and SYLVANIA 2825LL (License Plate Lamp Bulb). Click any part number to see every vehicle that part fits.
Door Panel Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2018 XJ engines | 6418LL | 🇺🇸 US 🇨🇦 CA | Long LifeBase Type: Festoon | View on Amazon |
| WAGNER Fits: all 2018 XJ engines | 11005LL | 🇺🇸 US 🇨🇦 CA | Long LifeSV8.5 Base | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: all 2018 XJ engines | 6418SL | 🇺🇸 US 🇨🇦 CA | LEDCool White | View on Amazon |
| SYLVANIA Fits: all 2018 XJ engines | 6418LED | 🇺🇸 US 🇨🇦 CA | ZEVOCool White | View on Amazon |
| WAGNER Fits: all 2018 XJ engines | 6418WLED | 🇺🇸 US 🇨🇦 CA | LED1.16 Watt | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Popular Fits: all 2018 XJ engines | 11005 | 🇺🇸 US 🇨🇦 CA | Bulb Type: T-4 Bulb 1/2 (13mm) DiameterSV8.5 Base | View on Amazon |
| SYLVANIA Fits: all 2018 XJ engines | 6418 | 🇺🇸 US 🇨🇦 CA | Base Type: SVWattage: 5.00 W | View on Amazon |
This table covers the replacement bulbs for the Door Panel 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.
7 Door Panel Light Bulb parts for the 2018 Jaguar XJ come from 2 brands — SYLVANIA and WAGNER. The "Popular" part is SYLVANIA 6418SL. Every part fits both the 3.0L V6 Supercharged and the 5.0L V8 Supercharged.
In the Extended Life grade, SYLVANIA and WAGNER supply 2 parts: grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. A representative part number is SYLVANIA 6418LL.
The LED (instant-on, long life, energy-saving) section lists 3 options from SYLVANIA and WAGNER — 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.
In the Standard Replacement grade, WAGNER and SYLVANIA supply 2 parts: built to original-equipment specification. A representative part number is WAGNER 11005.
Part numbers include SYLVANIA 6418SL, SYLVANIA 6418LL and WAGNER 11005LL, among others listed above.
License Plate Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: all 2018 XJ engines | 2825LL | 🇺🇸 US 🇨🇦 CA | Long LifeBase Type: W2.1x9.5d | View on Amazon |
| WAGNER Fits: all 2018 XJ engines | 17177LL | 🇺🇸 US 🇨🇦 CA | Long LifeW2.1x9.5d Base | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2018 XJ engines | 2825ST | 🇺🇸 US 🇨🇦 CA | BlueSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: all 2018 XJ engines | 2825SL | 🇺🇸 US 🇨🇦 CA | LEDCool White | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: all 2018 XJ engines | 2825 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: W2.1x9.5d | View on Amazon |
| SYLVANIA Fits: all 2018 XJ engines | 2825 | 🇺🇸 US 🇨🇦 CA | Base Type: W2.1x9.5dWattage: 5.00 W | View on Amazon |
| WAGNER Fits: all 2018 XJ engines | 17177 | 🇺🇸 US 🇨🇦 CA | W2.1x9.5d Base5.000 Watt | View on Amazon |
This table covers the bulbs that light the license plate. 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 License Plate Lamp Bulb parts are listed for the 2018 Jaguar XJ, from SYLVANIA, WAGNER and HELLA. SYLVANIA 2825LL carries the "Popular" badge. All of them fit every engine offered in the 2018 XJ.
The Extended Life section: 2 options from SYLVANIA and WAGNER. SYLVANIA 2825LL 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 2825ST is listed in this group.
LED (instant-on, long life, energy-saving): 1 part, from SYLVANIA. A representative part number is SYLVANIA 2825SL.
The Standard Replacement section: 3 options from HELLA, SYLVANIA and WAGNER. HELLA 2825 is listed in this group.
Part numbers include SYLVANIA 2825LL, WAGNER 17177LL and SYLVANIA 2825ST, among others listed above.
Step / Courtesy Light Bulb
HID (intense white light)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: all 2018 XJ engines | DE3423LL | 🇺🇸 US 🇨🇦 CA | Longer Life | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Fits: all 2018 XJ engines | 17136 | 🇺🇸 US 🇨🇦 CA | Medium Standard Miniature Lamp | View on Amazon |
This table covers the bulbs in the step and courtesy 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 Step / Courtesy Light Bulb parts are listed for the 2018 Jaguar XJ, from PHILIPS and WAGNER. All of them fit every engine offered in the 2018 XJ.
The HID (intense white light) section lists 1 option from PHILIPS — grouped under the catalog's "HID (intense white light)" designation — the notes column spells out what sets them apart. PHILIPS DE3423LL is listed in this group.
The Standard Replacement section: 1 option from WAGNER. WAGNER 17136 is listed in this group.
Listed part numbers: PHILIPS DE3423LL and WAGNER 17136.
Tail Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: all 2018 XJ engines | 2825 | 🇺🇸 US 🇨🇦 CA | 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.
Buying Electrical Bulb & Socket Parts for a 2018 Jaguar XJ
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 3.0L V6 Supercharged and the 5.0L V8 Supercharged.
- 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: Door Panel Light Bulb and License Plate Lamp Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2018 Jaguar XJ?
Our catalog currently lists 17 electrical bulb & socket parts for the 2018 Jaguar XJ across 4 subcategories and 4 brands, covering both the 3.0L V6 Supercharged and the 5.0L V8 Supercharged. Each part is matched to the engine(s) it fits.
Do electrical bulb & socket parts differ between 2018 Jaguar XJ engines?
No. On this page every electrical bulb & socket part fits both the 3.0L V6 Supercharged and the 5.0L V8 Supercharged. 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 2018 Jaguar XJ?
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 Jaguar XJ 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 Jaguar XJ?
Every part on this page already fits both the 3.0L V6 Supercharged and the 5.0L V8 Supercharged. 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 Jaguar XJ
Electrical Bulb & Socket Parts for Other Jaguar XJ 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.