The 1971 Triumph Stag has 8 electrical bulb & socket parts with verified fitment on this page — 2 part types and 2 brands, covering the 3.0L V8 engine. Each part includes a manufacturer part number and application notes.
The bulb and socket system on the 1971 Triumph Stag covers every bulb and socket on the vehicle, from headlamps to instrument-cluster illumination. All 8 listed parts are Headlamp Bulb (4 parts) and Headlamp Socket (4 parts).
The 1971 Triumph Stag came with a single engine, the 3.0L V8, and every part is verified against it.
2 brands supply electrical bulb & socket parts for the 1971 Triumph Stag, led by SYLVANIA (4 parts) and DORMAN (4 parts). Quality grades include Extra Bright and Standard Replacement.
Each part number listed for the 1971 Triumph Stag opens a page with every vehicle that part fits.
Headlamp Bulb
Extra Bright (improved visibility, but shorter life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA | H5001XV | 🇺🇸 US 🇨🇦 CA | Xtra VisionColor Temperature: 3200 KV | View on Amazon |
| SYLVANIA | H5006XV | 🇺🇸 US 🇨🇦 CA | Xtra VisionColor Temperature: 3200 KV | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SYLVANIA | H5001 | 🇺🇸 US 🇨🇦 CA | Base Type: A2Wattage: 50.00 W | View on Amazon |
| SYLVANIA | H5006 | 🇺🇸 US 🇨🇦 CA | Base Type: A3Wattage: 35.00 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.
SYLVANIA supplies the 4 Headlamp Bulb parts for the 1971 Triumph Stag.
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 H5001XV is listed in this group.
The Standard Replacement section lists 2 options from SYLVANIA — built to original-equipment specification. SYLVANIA H5001 is listed in this group.
Part numbers include SYLVANIA H5001XV, SYLVANIA H5006XV and SYLVANIA H5001, among others listed above.
Headlamp Socket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 85810 | 🇺🇸 US 🇨🇦 CA | 3-Wire/Terminal Seal Beam Lamp 4002 & 4005 Bulb | View on Amazon |
| DORMAN | 84790 | 🇺🇸 US 🇨🇦 CA | High Temperature Socket | View on Amazon |
| DORMAN | 645998 | 🇺🇸 US 🇨🇦 CA | Bulb 4000, 4652, 4656, 5006, 6014, 6015, 6024, 6052, 6054, or 9003High Temperature Harness | View on Amazon |
| DORMAN | 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 1971 Triumph Stag.
Listed part numbers: DORMAN 85810, DORMAN 84790 and DORMAN 645998, plus the other parts above.
Buying Electrical Bulb & Socket Parts for a 1971 Triumph Stag
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 3.0L V8 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 1971 Triumph Stag?
Our catalog currently lists 8 electrical bulb & socket parts for the 1971 Triumph Stag across 2 subcategories and 2 brands, covering the 3.0L V8 engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical bulb & socket problems on a 1971 Triumph Stag?
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 1971 Triumph Stag 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 1971 Triumph Stag?
Every part on this page is matched to the 3.0L V8 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 1971 Triumph Stag
Electrical Bulb & Socket Parts for Other Triumph Stag 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.