Description
Overview:
The Indicator Bulb 12v 21w Amber (LLB581) is a standard automotive signalling lamp designed for clear, high-contrast turn indication. It uses a robust tungsten filament inside an amber-tinted glass envelope to produce a bright, compliant amber output. The bulb features a BAU15s single-contact bayonet cap with offset pins, ensuring it only fits the correct indicator holders and locks securely in place. Rated at 12 volts and 21 watts, it suits most passenger vehicles and light commercial 12 V systems, as well as many trailers and plant machines using the same cap type. The sturdy metal base and heat-resistant glass are built for repeated on/off cycles and everyday vibration, helping maintain reliable signalling in cars, vans, motorcycles, trailers, and small construction or garden machinery fitted with indicators.
Key Features:
- BAU15s (SCC) 15 mm single-contact bayonet cap with offset pins for correct orientation and secure fitting
- 12 V, 21 W output for consistent, easily seen amber indication
- Amber-tinted glass for stable colour and visibility through clear indicator lenses
- Simple push-and-twist replacement; no tools typically required
- Not polarity-sensitive, compatible with standard BAU15s indicator holders
- Engineered for everyday road use with resistance to heat and normal vibration
- Suitable for front and rear indicators and many side units designed for BAU15s
- Helps maintain road safety by delivering a clear, unambiguous turn signal
- Direct like-for-like replacement for lamps marked "581"/BAU15s amber
Typical Applications:
Used in vehicle turn signal circuits on cars, vans, 4x4s, motorcycles, and light trailers with 12 V systems. Also common on compact construction equipment, utility vehicles, and garden machinery fitted with BAU15s indicator lamp holders. Ideal for maintaining or restoring reliable signalling on front or rear indicator positions.
Also known as:
581 bulb, PY21W (amber 21 W), BAU15s amber single-contact bayonet, S25 offset pin amber, blinker lamp, directional signal lamp, trafficator bulb, indicator lamp 12 V 21 W, amber bayonet indicator light.
Product Specifications
| L&S Part No. | LLB581 |
|---|---|
| Unit of Sale | 1 |
