The 1977 MG MGB has 92 electrical bulb & socket parts with verified fitment on this page — 11 part types and 5 brands, covering both the 1.8L L4 and the 3.5L V8. Each part includes a manufacturer part number and application notes.
On the 1977 MG MGB, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. 39 parts of the 92 listed are Turn Signal Lamp Bulb (17 parts), Dome Light Bulb (11 parts) and License Plate Lamp Bulb (11 parts). The other 8 part types cover the remaining 53 parts.
The 1977 MG MGB was sold with both the 1.8L L4 and the 3.5L V8. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
5 brands supply electrical bulb & socket parts for the 1977 MG MGB, led by SYLVANIA (37 parts), WAGNER (29 parts) and HELLA (12 parts), plus 2 more brands. Quality grades include Standard Replacement, Extended Life and LED.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 1977 MG MGB. 21 parts have it, including SYLVANIA 1157 (Brake Light Bulb) and SYLVANIA 6418SL (Dome Light Bulb). Each part number opens a page with every vehicle that part fits.
Back Up / Reverse Lamp Bulb
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 1.8L L4 | 6418 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: SV8.5-8 | 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.
This group shows a single part: HELLA 6418.
Brake Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 | 1157LL | 🇺🇸 US 🇨🇦 CA | Long LifeBase Type: BAY15D | View on Amazon |
| WAGNER Fits: 1.8L L4 | 1157LL | 🇺🇸 US 🇨🇦 CA | Long LifeDouble Contact Index Base | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 | 1157ST | 🇺🇸 US 🇨🇦 CA | Silver StarCool White | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 | 1157SL | 🇺🇸 US 🇨🇦 CA | LED | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 1157RSL | 🇺🇸 US 🇨🇦 CA | LED | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 1157LED | 🇺🇸 US 🇨🇦 CA | ZEVO | View on Amazon |
| WAGNER Fits: 1.8L L4 | 1157LEDW | 🇺🇸 US 🇨🇦 CA | LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 1.8L L4 | 1157 | 🇺🇸 US 🇨🇦 CA | Base Type: BAY15DWattage: 26.90 W | View on Amazon |
| WAGNER Popular Fits: 1.8L L4 | 1157 | 🇺🇸 US 🇨🇦 CA | Double Contact Index Base26.880 Watt | View on Amazon |
| HELLA Fits: 1.8L L4 | 1157 | 🇺🇸 US 🇨🇦 CA | Incandescent27/8W | 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.
10 Brake Light Bulb parts for the 1977 MG MGB come from 3 brands — SYLVANIA, WAGNER and HELLA. The "Popular" part is SYLVANIA 1157.
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 1157LL.
In the Extra Bright (improved visibility, but shorter life) grade, SYLVANIA supplies 1 part: 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 SYLVANIA 1157ST.
The LED (instant-on, long life, energy-saving) section lists 4 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 1157SL is listed in this group.
In the Standard Replacement grade, SYLVANIA, WAGNER and HELLA supply 3 parts: built to original-equipment specification. A representative part number is SYLVANIA 1157.
Dome Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 | DE3423LL | 🇺🇸 US 🇨🇦 CA | Base Type: SVLong Life | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 6418LL | 🇺🇸 US 🇨🇦 CA | Long LifeBase Type: Festoon | View on Amazon |
| WAGNER Fits: 1.8L L4 | 11005LL | 🇺🇸 US 🇨🇦 CA | Long LifeSV8.5 Base | View on Amazon |
HID (intense white light)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 1.8L L4 | DE3423LL | 🇺🇸 US 🇨🇦 CA | Longer Life | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 1.8L L4 | 6418SL | 🇺🇸 US 🇨🇦 CA | LEDCool White | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 6418LED | 🇺🇸 US 🇨🇦 CA | ZEVOCool White | View on Amazon |
| WAGNER Fits: 1.8L L4 | 6418WLED | 🇺🇸 US 🇨🇦 CA | LED1.16 Watt | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 1.8L L4 | 6418 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: SV8.5-8 | View on Amazon |
| WAGNER Popular Fits: 1.8L L4 | 11005 | 🇺🇸 US 🇨🇦 CA | Bulb Type: T-4 Bulb 1/2 (13mm) DiameterSV8.5 Base | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 6418 | 🇺🇸 US 🇨🇦 CA | Base Type: SVWattage: 5.00 W | View on Amazon |
| WAGNER Fits: 1.8L L4 | 17136 | 🇺🇸 US 🇨🇦 CA | Medium Standard Miniature Lamp | 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.
11 Dome Light Bulb parts for the 1977 MG MGB come from 4 brands — SYLVANIA, WAGNER, PHILIPS and 1 other brand. The "Popular" part is SYLVANIA 6418SL.
Extended Life: 3 parts, from SYLVANIA and WAGNER. A representative part number is SYLVANIA DE3423LL.
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: 3 options from SYLVANIA and WAGNER. SYLVANIA 6418SL is listed in this group.
Standard Replacement: 4 parts, from WAGNER, HELLA and SYLVANIA. A representative part number is HELLA 6418.
Headlamp Bulb
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 | H6024XV | 🇺🇸 US 🇨🇦 CA | Xtra VisionColor Temperature: 3200 KV | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | H6024ST | 🇺🇸 US 🇨🇦 CA | Silver StarColor Temperature: 4000 KV | View on Amazon |
| WAGNER Fits: 1.8L L4 | H6024BL | 🇺🇸 US 🇨🇦 CA | Up To 20% More Light | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAGNER Popular Fits: 1.8L L4 | H6024 | 🇺🇸 US 🇨🇦 CA | High Beam and Low BeamHalogen | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | H6024 | 🇺🇸 US 🇨🇦 CA | Base Type: PAR56Wattage: 40.00 W | 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 are listed for the 1977 MG MGB, from SYLVANIA and WAGNER. WAGNER H6024 carries the "Popular" badge.
The Extra Bright (improved visibility, but shorter life) section: 3 options from SYLVANIA and WAGNER. SYLVANIA H6024XV is listed in this group.
The Standard Replacement section: 2 options from WAGNER and SYLVANIA. WAGNER H6024 is listed in this group.
This group includes WAGNER H6024, SYLVANIA H6024XV and SYLVANIA H6024ST and the remaining parts above.
Headlamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 1.8L L4 | 85810 | 🇺🇸 US 🇨🇦 CA | 3-Wire/Terminal Seal Beam Lamp 4002 & 4005 Bulb | View on Amazon |
| DORMAN Fits: 1.8L L4 | 84790 | 🇺🇸 US 🇨🇦 CA | High Temperature Socket | View on Amazon |
| DORMAN Fits: 1.8L L4 | 645998 | 🇺🇸 US 🇨🇦 CA | Bulb 4000, 4652, 4656, 5006, 6014, 6015, 6024, 6052, 6054, or 9003High Temperature Harness | View on Amazon |
| DORMAN Fits: 1.8L L4 | 90801 | 🇺🇸 US 🇨🇦 CA | Ceramic SocketHigh/Low 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.
DORMAN supplies the 4 Headlamp Socket parts for the 1977 MG MGB.
This group includes DORMAN 85810, DORMAN 84790 and DORMAN 645998 and the remaining parts above.
Instrument Panel Light Bulb
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 | 1445 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 | 1445LL | 🇺🇸 US 🇨🇦 CA | Base Type: BA9SLong Life | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 53LL | 🇺🇸 US 🇨🇦 CA | Long LifeBase Type: BA9 | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 1.8L L4 | 3898 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: BA7S | View on Amazon |
| SYLVANIA Popular Fits: 1.8L L4 | 53 | 🇺🇸 US 🇨🇦 CA | Base Type: BA9Wattage: 1.70 W | View on Amazon |
| WAGNER Fits: 1.8L L4 | 1449 | 🇺🇸 US 🇨🇦 CA | Miniature Screw Base2.800 Watt | View on Amazon |
| WAGNER Fits: 1.8L L4 | 11009 | 🇺🇸 US 🇨🇦 CA | BA7S Base1.730 Watt | View on Amazon |
This table covers the replacement bulbs for the Instrument 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 Instrument Panel Light Bulb parts for the 1977 MG MGB come from 3 brands — SYLVANIA, WAGNER and HELLA. The "Popular" part is HELLA 3898.
The Economy section lists 1 option from SYLVANIA — the catalog's value-priced group. SYLVANIA 1445 is listed in this group.
Extended Life: 2 parts, from SYLVANIA. A representative part number is SYLVANIA 1445LL.
Standard Replacement: 4 parts, from WAGNER, HELLA and SYLVANIA. A representative part number is HELLA 3898.
This group includes HELLA 3898, SYLVANIA 1445 and SYLVANIA 1445LL and the remaining parts above.
License Plate Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 | DE3423LL | 🇺🇸 US 🇨🇦 CA | Base Type: SVLong Life | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 6418LL | 🇺🇸 US 🇨🇦 CA | Long LifeBase Type: Festoon | View on Amazon |
| WAGNER Fits: 1.8L L4 | 1895LL | 🇺🇸 US 🇨🇦 CA | Long LifeMiniature Bayonet Base | View on Amazon |
| WAGNER Fits: 1.8L L4 | 11005LL | 🇺🇸 US 🇨🇦 CA | Long LifeSV8.5 Base | View on Amazon |
HID (intense white light)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 1.8L L4 | DE3423LL | 🇺🇸 US 🇨🇦 CA | Longer Life | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 1.8L L4 | 6418 | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: SV8.5-8 | View on Amazon |
| PHILIPS Popular Fits: 1.8L L4 | 1895 | 🇺🇸 US 🇨🇦 CA | Fits Standardor with Bulb 1895 | View on Amazon |
| WAGNER Popular Fits: 1.8L L4 | 1895 | 🇺🇸 US 🇨🇦 CA | Miniature Bayonet Base3.780 Watt | View on Amazon |
| HELLA Fits: 1.8L L4 | 1895 | 🇺🇸 US 🇨🇦 CA | HalogenAverage Rated Life: 2000.0 HR | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 6418 | 🇺🇸 US 🇨🇦 CA | Base Type: SVWattage: 5.00 W | View on Amazon |
| WAGNER Fits: 1.8L L4 | 11005 | 🇺🇸 US 🇨🇦 CA | Bulb Type: T-4 Bulb 1/2 (13mm) DiameterSV8.5 Base | 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.
11 License Plate Lamp Bulb parts for the 1977 MG MGB come from 4 brands — WAGNER, SYLVANIA, PHILIPS and 1 other brand. The "Popular" part is HELLA 6418.
Extended Life: 4 parts, from SYLVANIA and WAGNER. A representative part number is SYLVANIA DE3423LL.
HID (intense white light): 1 part, from PHILIPS. A representative part number is PHILIPS DE3423LL.
Standard Replacement: 6 parts, from HELLA, WAGNER, PHILIPS and 1 other brand. A representative part number is HELLA 6418.
Parking Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 | 1157LL | 🇺🇸 US 🇨🇦 CA | Long LifeBase Type: BAY15D | View on Amazon |
| WAGNER Fits: 1.8L L4 | 1157LL | 🇺🇸 US 🇨🇦 CA | Long LifeDouble Contact Index Base | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 | 1157ST | 🇺🇸 US 🇨🇦 CA | Silver StarCool White | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Fits: 1.8L L4 | 1157WLED | 🇺🇸 US 🇨🇦 CA | Ultinon LEDWhite | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 1157SL | 🇺🇸 US 🇨🇦 CA | LED | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 1157LED | 🇺🇸 US 🇨🇦 CA | ZEVO | View on Amazon |
| WAGNER Fits: 1.8L L4 | 1157LEDW | 🇺🇸 US 🇨🇦 CA | LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 1.8L L4 | 1157 | 🇺🇸 US 🇨🇦 CA | Base Type: BAY15DWattage: 26.90 W | View on Amazon |
| WAGNER Popular Fits: 1.8L L4 | 1157 | 🇺🇸 US 🇨🇦 CA | Double Contact Index Base26.880 Watt | View on Amazon |
| HELLA Fits: 1.8L L4 | 1157 | 🇺🇸 US 🇨🇦 CA | Incandescent27/8W | 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.
10 Parking Lamp Bulb parts are listed for the 1977 MG MGB, from SYLVANIA, WAGNER, PHILIPS and 1 other brand. SYLVANIA 1157 carries the "Popular" badge.
The Extended Life section: 2 options from SYLVANIA and WAGNER. SYLVANIA 1157LL is listed in this group.
The Extra Bright (improved visibility, but shorter life) section: 1 option from SYLVANIA. SYLVANIA 1157ST is listed in this group.
LED (instant-on, long life, energy-saving): 4 parts, from SYLVANIA, PHILIPS and WAGNER. A representative part number is PHILIPS 1157WLED.
The Standard Replacement section: 3 options from SYLVANIA, WAGNER and HELLA. SYLVANIA 1157 is listed in this group.
Side Marker Light Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 | 1895LL | 🇺🇸 US 🇨🇦 CA | Long LifeBase Type: BA9 | View on Amazon |
| WAGNER Fits: 1.8L L4 | 1895LL | 🇺🇸 US 🇨🇦 CA | Long LifeMiniature Bayonet Base | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PHILIPS Popular Fits: 1.8L L4 | 1895 | 🇺🇸 US 🇨🇦 CA | Fits RearStandard | View on Amazon |
| WAGNER Popular Fits: 1.8L L4 | 1895 | 🇺🇸 US 🇨🇦 CA | Miniature Bayonet Base3.780 Watt | View on Amazon |
| HELLA Fits: 1.8L L4 | 1895 | 🇺🇸 US 🇨🇦 CA | HalogenAverage Rated Life: 2000.0 HR | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 1895 | 🇺🇸 US 🇨🇦 CA | Base Type: BA9Wattage: 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.
6 Side Marker Light Bulb parts for the 1977 MG MGB come from 4 brands — SYLVANIA, WAGNER, PHILIPS and 1 other brand. The "Popular" part is PHILIPS 1895.
Extended Life: 2 parts, from SYLVANIA and WAGNER. A representative part number is SYLVANIA 1895LL.
Standard Replacement: 4 parts, from PHILIPS, WAGNER, HELLA and 1 other brand. A representative part number is PHILIPS 1895.
Listed part numbers: PHILIPS 1895 and SYLVANIA 1895LL, plus the other parts above.
Tail Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 | 1157LL | 🇺🇸 US 🇨🇦 CA | Long LifeBase Type: BAY15D | View on Amazon |
| WAGNER Fits: 1.8L L4 | 1157LL | 🇺🇸 US 🇨🇦 CA | Long LifeDouble Contact Index Base | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 | 1157ST | 🇺🇸 US 🇨🇦 CA | Silver StarCool White | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 1.8L L4 | 1157SMD | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DORMAN Fits: 1.8L L4 | 1157WSMD | 🇺🇸 US 🇨🇦 CA | Bulb Type 1157 | View on Amazon |
| DORMAN Fits: 1.8L L4 | 1157WHP | 🇺🇸 US 🇨🇦 CA | Bulb Type 1157 | View on Amazon |
| WAGNER Fits: 1.8L L4 | 1157LEDW | 🇺🇸 US 🇨🇦 CA | LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular Fits: 1.8L L4 | 1157 | 🇺🇸 US 🇨🇦 CA | Base Type: BAY15DWattage: 26.90 W | View on Amazon |
| WAGNER Popular Fits: 1.8L L4 | 1157 | 🇺🇸 US 🇨🇦 CA | Double Contact Index Base26.880 Watt | View on Amazon |
| HELLA Fits: 1.8L L4 | 1157 | 🇺🇸 US 🇨🇦 CA | Incandescent27/8W | 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.
10 Tail Lamp Bulb parts are listed for the 1977 MG MGB, from SYLVANIA, WAGNER, DORMAN and 1 other brand. SYLVANIA 1157 carries the "Popular" badge.
The Extended Life section: 2 options from SYLVANIA and WAGNER. SYLVANIA 1157LL is listed in this group.
The Extra Bright (improved visibility, but shorter life) section: 1 option from SYLVANIA. SYLVANIA 1157ST is listed in this group.
LED (instant-on, long life, energy-saving): 4 parts, from DORMAN and WAGNER. A representative part number is DORMAN 1157SMD.
The Standard Replacement section: 3 options from SYLVANIA, WAGNER and HELLA. SYLVANIA 1157 is listed in this group.
Turn Signal Lamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Fits: 1.8L L4 | 1156LL | 🇺🇸 US 🇨🇦 CA | IncandescentSocket Type Bulb: BA15S | View on Amazon |
| PHILIPS Fits: 1.8L L4 | 1156LL | 🇺🇸 US 🇨🇦 CA | Longer Life | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 1156LL | 🇺🇸 US 🇨🇦 CA | Long LifeBase Type: BA15S | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 1157LL | 🇺🇸 US 🇨🇦 CA | Long LifeBase Type: BAY15D | View on Amazon |
| WAGNER Fits: 1.8L L4 | 1157LL | 🇺🇸 US 🇨🇦 CA | Long LifeDouble Contact Index Base | View on Amazon |
| WAGNER Fits: 1.8L L4 | 1156LL | 🇺🇸 US 🇨🇦 CA | Long LifeSingle Contact Bayonet Base | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Fits: 1.8L L4 | 1157ST | 🇺🇸 US 🇨🇦 CA | Silver StarCool White | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 1156ST | 🇺🇸 US 🇨🇦 CA | Cool WhiteColor Temperature: 3200 KV | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 1.8L L4 | 1156WSMD | 🇺🇸 US 🇨🇦 CA | Bulb Type 11563.6 Watt | View on Amazon |
| WAGNER Fits: 1.8L L4 | 1157LEDW | 🇺🇸 US 🇨🇦 CA | LED | View on Amazon |
| WAGNER Fits: 1.8L L4 | 1156WLED | 🇺🇸 US 🇨🇦 CA | LEDWhite | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HELLA Popular Fits: 1.8L L4 | 1156 | 🇺🇸 US 🇨🇦 CA | Brightness: 32.0 CPIncandescent | View on Amazon |
| SYLVANIA Popular Fits: 1.8L L4 | 1157 | 🇺🇸 US 🇨🇦 CA | Base Type: BAY15DWattage: 26.90 W | View on Amazon |
| WAGNER Popular Fits: 1.8L L4 | 1157 | 🇺🇸 US 🇨🇦 CA | Double Contact Index Base26.880 Watt | View on Amazon |
| WAGNER Popular Fits: 1.8L L4 | 1156 | 🇺🇸 US 🇨🇦 CA | Single Contact Bayonet Base26.880 Watt | View on Amazon |
| HELLA Fits: 1.8L L4 | 1157 | 🇺🇸 US 🇨🇦 CA | Incandescent27/8W | View on Amazon |
| SYLVANIA Fits: 1.8L L4 | 1156 | 🇺🇸 US 🇨🇦 CA | Base Type: BA15SWattage: 26.90 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.
17 Turn Signal Lamp Bulb parts for the 1977 MG MGB come from 5 brands — SYLVANIA, WAGNER, HELLA and 2 other brands. The "Popular" part is HELLA 1156.
Extended Life: 6 parts, from SYLVANIA, WAGNER, HELLA and 1 other brand. A representative part number is HELLA 1156LL.
Extra Bright (improved visibility, but shorter life): 2 parts, from SYLVANIA. A representative part number is SYLVANIA 1157ST.
The LED (instant-on, long life, energy-saving) section: 3 options from WAGNER and DORMAN. DORMAN 1156WSMD is listed in this group.
Standard Replacement: 6 parts, from HELLA, SYLVANIA and WAGNER. A representative part number is HELLA 1156.
Buying Electrical Bulb & Socket Parts for a 1977 MG MGB
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: Turn Signal Lamp Bulb and Dome Light Bulb .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 1977 MG MGB?
Our catalog currently lists 92 electrical bulb & socket parts for the 1977 MG MGB across 11 subcategories and 5 brands, covering both the 1.8L L4 and the 3.5L V8. Each part is matched to the engine(s) it fits.
Do electrical bulb & socket parts differ between 1977 MG MGB 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 1977 MG MGB?
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 1977 MG MGB 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 1977 MG MGB?
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 1977 MG MGB
Electrical Bulb & Socket Parts for Other MG MGB 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.