This page lists 11 electrical bulb & socket parts for the 1967 Triumph TR4A, across 2 part types, covering the 2.1L L4 engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 1967 Triumph TR4A, the bulb and socket system covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. All 11 listed parts are Headlamp Bulb (7 parts) and Headlamp Socket (4 parts).
Every part on this page is matched to the 2.1L L4 — the only engine offered in the 1967 Triumph TR4A.
The most listed brands for 1967 Triumph TR4A electrical bulb & socket parts are SYLVANIA (7 parts) and DORMAN (4 parts). Quality grades include Extra Bright, Extended Life and LED.
2 parts on this 1967 Triumph TR4A page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including SYLVANIA 9003SU (Headlamp Bulb) and SYLVANIA 9003 (Headlamp Bulb). Click any part number to see every vehicle that part fits.
Headlamp Bulb
Extended Life
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA | 9003LL | 🇺🇸 US | Long Life | View on Amazon |
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular | 9003SU | 🇺🇸 US | Silver Star UltraColor Temperature: 4100 KV | View on Amazon |
| SYLVANIA | 9003XV | 🇺🇸 US | Xtra VisionColor Temperature: 3200 KV | View on Amazon |
| SYLVANIA | 9003ST | 🇺🇸 US | Color Temperature: 4000 KVSilver Star | View on Amazon |
LED (instant-on, long life, energy-saving)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA | 9003SL | 🇺🇸 US | LED | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA Popular | 9003 | 🇺🇸 US | High Beam and Low Beam | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA | 9003SZG | 🇺🇸 US | Silver Star zXe GOLDColor Temperature: 4200 KV | 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.
7 Headlamp Bulb parts for the 1967 Triumph TR4A come from SYLVANIA. The "Popular" part is SYLVANIA 9003SU.
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 9003LL.
In the Extra Bright (improved visibility, but shorter life) grade, SYLVANIA supplies 3 parts: 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 9003SU.
The LED (instant-on, long life, energy-saving) section lists 1 option 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 9003SL is listed in this group.
In the Standard Replacement grade, SYLVANIA supplies 1 part: built to original-equipment specification. A representative part number is SYLVANIA 9003.
1 further part sits outside the graded sections, with the same engine-level match.
Part numbers include SYLVANIA 9003SU, SYLVANIA 9003LL and SYLVANIA 9003XV, among others listed above.
Headlamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 85810 | 🇺🇸 US | 3-Wire/Terminal Seal Beam Lamp 4002 & 4005 Bulb | View on Amazon |
| DORMAN | 84790 | 🇺🇸 US | High Temperature Socket | View on Amazon |
| DORMAN | 645998 | 🇺🇸 US | Bulb 4000, 4652, 4656, 5006, 6014, 6015, 6024, 6052, 6054, or 9003High Temperature Harness | View on Amazon |
| DORMAN | 90801 | 🇺🇸 US | 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.
4 Headlamp Socket parts for the 1967 Triumph TR4A come from DORMAN.
Part numbers include DORMAN 85810, DORMAN 84790 and DORMAN 645998, among others listed above.
Buying Electrical Bulb & Socket Parts for a 1967 Triumph TR4A
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 2.1L L4 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 Headlamp Socket .
Frequently Asked Questions
How many electrical bulb & socket parts fit the 1967 Triumph TR4A?
Our catalog currently lists 11 electrical bulb & socket parts for the 1967 Triumph TR4A across 2 subcategories and 2 brands, covering the 2.1L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical bulb & socket problems on a 1967 Triumph TR4A?
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 1967 Triumph TR4A 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 1967 Triumph TR4A?
Every part on this page is matched to the 2.1L L4 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 1967 Triumph TR4A
Electrical Bulb & Socket Parts for Other Triumph TR4A 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.