1981 BMW 633CSi Headlight Bulb Size

Factory light bulb sizes for headlight, fog light, turn signal, brake, and interior lights.

Quick Factory Answer

The 1981 BMW 633CSi uses H7 for low beam and H7 for high beam.

Low Beam Headlight
H7
High Beam Headlight
H7
Fog Light Bulb
H8
Front Turn Signal
PY21W
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Full Automotive Light Bulb Chart

Low Beam HeadlightH7
High Beam HeadlightH7
Fog LightH8
Front Turn SignalPY21W
Rear Taillight / Brake LightP21W
License Plate Light6418 / C5W
Reverse / Backup Light921

Other Factory Specs for 1981 BMW 633CSi

🛢️ Oil Type & Capacity →🛞 Tire Size & Pressure →🌧️ Wiper Blade Sizes →📖 OEM Repair Manual →

Frequently Asked Questions

What size headlight bulb fits a 1981 BMW 633CSi?
The 1981 BMW 633CSi uses a H7 bulb for the low beam and a H7 bulb for the high beam.
Does a 1981 BMW 633CSi use separate low and high beam bulbs?
Yes — it uses separate bulbs: H7 for low beam and H7 for high beam.
What fog light bulb fits a 1981 BMW 633CSi?
The 1981 BMW 633CSi uses a H8 bulb for the front fog lights.