60 Electrical bulb & socket parts are listed for the 2021 Ford Mustang, in 16 part types, covering all 4 engine options (2.3L L4 Turbocharged, 5.0L V8, 5.2L V8 Supercharged and ELECTRIC). Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 Ford Mustang, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. 25 parts of the 60 listed are Back Up / Reverse Lamp Bulb (11 parts), Glove Box Light Bulb (7 parts) and Map / Reading Light Bulb (7 parts). The other 13 part types cover the remaining 35 parts.
The 2021 Ford Mustang was sold with 4 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Ford Mustang electrical bulb & socket parts are SYLVANIA (25 parts), HELLA (16 parts) and MOTORCRAFT (6 parts), plus 6 more brands. Quality grades include Standard Replacement, Extended Life and LED.
9 parts on this 2021 Ford Mustang page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including SYLVANIA 3157LL (Back Up / Reverse Lamp Bulb) and SYLVANIA 2825LL (Glove Box 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 Popular Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 3157LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.5x16qLong Life | View on Amazon |
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 3156LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: W2.5x16d | View on Amazon |
| WAGNER Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged, ELECTRIC | 3157LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long Life8.260 Watt | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 3156ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Cool WhiteSilver Star | View on Amazon |
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 3157ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Silver StarCool White | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged, ELECTRIC | 3157WLED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LED | View on Amazon |
| WAGNER Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged, ELECTRIC | 3157LEDW | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 3157 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.5x16qWattage: 27.00 W | View on Amazon |
| WAGNER Popular Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged, ELECTRIC | 3157 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Double Contact Wedge Base26.880 Watt | View on Amazon |
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 7440 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W3X16D | View on Amazon |
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 3156 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.5x16dWattage: 26.90 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.
11 Back Up / Reverse Lamp Bulb parts are listed for the 2021 Ford Mustang, from SYLVANIA, WAGNER and HELLA. SYLVANIA 3157LL carries the "Popular" badge.
The Extended Life section lists 3 options from SYLVANIA and WAGNER — grouped under the catalog's "Extended Life" designation — the notes column spells out what sets them apart. SYLVANIA 3157LL is listed in this group.
The Extra Bright (improved visibility, but shorter life) section lists 2 options 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 3156ST is listed in this group.
In the LED (instant-on, long life, energy-saving) grade, WAGNER supplies 2 parts: 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 3157WLED.
The Standard Replacement section lists 4 options from SYLVANIA, WAGNER and HELLA — built to original-equipment specification. SYLVANIA 3157 is listed in this group.
Back Up / Reverse Lamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 645195 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | S2643 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Quantity: 1Terminal Gender: Male | View on Amazon |
This table covers the sockets that hold a Back Up / Reverse Lamp bulb. 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 Back Up / Reverse Lamp Socket parts are listed for the 2021 Ford Mustang, from DORMAN and STANDARD MOTOR PRODUCTS.
Listed part numbers: DORMAN 645195 and STANDARD MOTOR PRODUCTS S2643.
Brake Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 3157LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Incandescent27/8W | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 3157 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Incandescent27/7W | 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.
HELLA supplies both parts for the 2021 Ford Mustang.
The Extended Life section: 1 option from HELLA. HELLA 3157LL is listed in this group.
The Standard Replacement section: 1 option from HELLA. HELLA 3157 is listed in this group.
Listed part numbers: HELLA 3157LL and HELLA 3157.
Daytime Running Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 7443 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Incandescent21/5W | View on Amazon |
This table covers the bulbs used as daytime running 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 7443.
Daytime Running Light Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | S2990 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front Unit | View on Amazon |
This table covers the sockets that hold a Daytime Running Light bulb. 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.
This group shows a single part: STANDARD MOTOR PRODUCTS S2990.
Dome Light Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 912 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W2.1x9.5d | 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.
One part is listed for the 2021 Ford Mustang — HELLA 912.
Glove Box Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 2825LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: W2.1x9.5d | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 2825ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BlueSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 2825SL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDCool White | View on Amazon |
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 2825BLED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | ZEVO | View on Amazon |
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 2825BSL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LED | View on Amazon |
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 2825LED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | ZEVOCool White | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.1x9.5dWattage: 5.00 W | 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.
7 Glove Box Light Bulb parts for the 2021 Ford Mustang come from SYLVANIA. The "Popular" part is SYLVANIA 2825LL.
Extended Life: 1 part, from SYLVANIA. A representative part number is SYLVANIA 2825LL.
Extra Bright (improved visibility, but shorter life): 1 part, from SYLVANIA. A representative part number is SYLVANIA 2825ST.
The LED (instant-on, long life, energy-saving) section: 4 options from SYLVANIA. SYLVANIA 2825SL is listed in this group.
Standard Replacement: 1 part, from SYLVANIA. A representative part number is SYLVANIA 2825.
Listed part numbers: SYLVANIA 2825LL, SYLVANIA 2825ST and SYLVANIA 2825SL, plus the other parts above.
Headlamp Bulb
HID (intense white light)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | D3S | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | High Beam and Low Beam | View on Amazon |
| ÜRO PARTS Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | D3S | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | High Beam and Low Beam | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | H13 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Bulb Material Color: ClearHalogen | View on Amazon |
| MOTORCRAFT Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | HB128 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Bulb, with Ignitor, High Intensity Discharge, D3S | View on Amazon |
| MOTORCRAFT Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | HB137 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Ignitor, D8S | 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.
5 Headlamp Bulb parts for the 2021 Ford Mustang come from 4 brands — MOTORCRAFT, AUTOTECNICA, ÜRO PARTS and 1 other brand. The "Popular" part is HELLA H13.
In the HID (intense white light) grade, AUTOTECNICA and ÜRO PARTS supply 2 parts: grouped under the catalog's "HID (intense white light)" designation — the notes column spells out what sets them apart. A representative part number is AUTOTECNICA D3S.
Standard Replacement: 3 parts, from MOTORCRAFT and HELLA. A representative part number is HELLA H13.
Listed part numbers: HELLA H13 and AUTOTECNICA D3S, plus the other parts above.
Headlamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOTORCRAFT Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged, ELECTRIC | WPT1279 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BulkheadTerminal: Silver | View on Amazon |
| MOTORCRAFT Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | WPT1735 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 6 CavityHeadlamp | View on Amazon |
| MOTORCRAFT Fits: ELECTRIC | WPT1731 | 🇺🇸 US 🇨🇦 CA | 16 CavityLeft and Right | View on Amazon |
| MOTORCRAFT Fits: ELECTRIC | WPT1643 | 🇺🇸 US 🇨🇦 CA | 16 CavityLow Beam | 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.
4 Headlamp Socket parts for the 2021 Ford Mustang come from MOTORCRAFT.
Listed part numbers: MOTORCRAFT WPT1279, MOTORCRAFT WPT1735 and MOTORCRAFT WPT1731, plus the other parts above.
Map / Reading Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 2825LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: W2.1x9.5d | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 2825ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | BlueSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 2825SL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDCool White | View on Amazon |
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 2825BLED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | ZEVO | View on Amazon |
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 2825BSL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LED | View on Amazon |
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 2825LED | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | ZEVOCool White | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 2825 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.1x9.5dWattage: 5.00 W | 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.
SYLVANIA supplies the 7 Map / Reading Light Bulb parts for the 2021 Ford Mustang. SYLVANIA 2825LL carries the "Popular" badge.
The Extended Life section: 1 option from SYLVANIA. SYLVANIA 2825LL is listed in this group.
The Extra Bright (improved visibility, but shorter life) section: 1 option from SYLVANIA. SYLVANIA 2825ST is listed in this group.
LED (instant-on, long life, energy-saving): 4 parts, from SYLVANIA. A representative part number is SYLVANIA 2825SL.
The Standard Replacement section: 1 option from SYLVANIA. SYLVANIA 2825 is listed in this group.
Listed part numbers: SYLVANIA 2825LL, SYLVANIA 2825ST and SYLVANIA 2825SL, plus the other parts above.
Parking Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 7440NALL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentLong Life | View on Amazon |
| PHILIPS Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 7444NALL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Longer LifeNatural Amber | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 7440NA | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentNatural Amber | 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.
3 Parking Lamp Bulb parts for the 2021 Ford Mustang come from 2 brands — HELLA and PHILIPS.
Extended Life: 2 parts, from HELLA and PHILIPS. A representative part number is HELLA 7440NALL.
Standard Replacement: 1 part, from HELLA. A representative part number is HELLA 7440NA.
This group includes HELLA 7440NALL, PHILIPS 7444NALL and HELLA 7440NA.
Parking Lamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | S2643 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Connector Quantity: 1Terminal Gender: Male | View on Amazon |
This table covers the sockets that hold a Parking Lamp bulb. 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.
This group shows a single part: STANDARD MOTOR PRODUCTS S2643.
Side Marker Lamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 645159 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Rear | View on Amazon |
| STANDARD MOTOR PRODUCTS Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | S2650 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the sockets that hold a Side Marker Lamp bulb. 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 Side Marker Lamp Socket parts are listed for the 2021 Ford Mustang, from DORMAN and STANDARD MOTOR PRODUCTS.
This group includes DORMAN 645159 and STANDARD MOTOR PRODUCTS S2650.
Side Marker Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 194LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Long LifeBase Type: W2.1x9.2d | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 194ST | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Color Temperature: 3200 KVSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 194BSL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDBlue | View on Amazon |
| SYLVANIA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 194SL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | LEDCool White | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 194 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Base Type: W2.1x9.2dWattage: 3.80 W | View on Amazon |
This table covers the bulbs in the side-marker 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 5 Side Marker Light Bulb parts for the 2021 Ford Mustang. SYLVANIA 194 carries the "Popular" badge.
The Extended Life section: 1 option from SYLVANIA. SYLVANIA 194LL is listed in this group.
The Extra Bright (improved visibility, but shorter life) section: 1 option from SYLVANIA. SYLVANIA 194ST is listed in this group.
LED (instant-on, long life, energy-saving): 2 parts, from SYLVANIA. A representative part number is SYLVANIA 194BSL.
The Standard Replacement section: 1 option from SYLVANIA. SYLVANIA 194 is listed in this group.
This group includes SYLVANIA 194, SYLVANIA 194LL and SYLVANIA 194ST and the remaining parts above.
Tail Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 3157LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Incandescent27/8W | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 3157 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Incandescent27/7W | View on Amazon |
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 7440 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentSocket Type Bulb: W3X16D | View on Amazon |
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 7443 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Incandescent21/5W | 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.
4 Tail Lamp Bulb parts for the 2021 Ford Mustang come from HELLA.
Extended Life: 1 part, from HELLA. A representative part number is HELLA 3157LL.
Standard Replacement: 3 parts, from HELLA. A representative part number is HELLA 3157.
Part numbers include HELLA 3157LL, HELLA 3157 and HELLA 7440, among others listed above.
Turn Signal Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 3157LL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Incandescent27/8W | View on Amazon |
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 7440NALL | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentLong Life | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 3157 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Incandescent27/7W | View on Amazon |
| HELLA Fits: 2.3L L4 Turbocharged, 5.2L V8 Supercharged | 7440NA | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IncandescentNatural Amber | 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.
HELLA supplies the 4 Turn Signal Lamp Bulb parts for the 2021 Ford Mustang.
The Extended Life section: 2 options from HELLA. HELLA 3157LL is listed in this group.
The Standard Replacement section: 2 options from HELLA. HELLA 3157 is listed in this group.
This group includes HELLA 3157LL, HELLA 7440NALL and HELLA 3157 and the remaining parts above.
Buying Electrical Bulb & Socket Parts for a 2021 Ford Mustang
On this vehicle, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination.
- Match the engine first. Every electrical bulb & socket part here is engine-specific; each row shows which engine(s) it fits.
- 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: Back Up / Reverse Lamp Bulb and Glove Box Light Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 2021 Ford Mustang?
Our catalog currently lists 60 electrical bulb & socket parts for the 2021 Ford Mustang across 16 subcategories and 9 brands, covering all 4 engine options (2.3L L4 Turbocharged, 5.0L V8, 5.2L V8 Supercharged and ELECTRIC). Each part is matched to the engine(s) it fits.
Do electrical bulb & socket parts differ between 2021 Ford Mustang engines?
Yes. Every electrical bulb & socket part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of electrical bulb & socket problems on a 2021 Ford Mustang?
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 2021 Ford Mustang 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 2021 Ford Mustang?
First match the engine — each row shows which engine(s) the part fits. 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 2021 Ford Mustang
Electrical Bulb & Socket Parts for Other Ford Mustang 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.