Automotive indicator bulbs that restore clear amber signalling, matching common PY21W specifications. Drivers gain confidence with ready spares for routine maintenance and emergencies. Are ASC Light Bulb packs of ten the sensible replacement for your vehicle?
⚡ At a Glance
- • Light Output: Amber colour, rated 12V and 21W, designated PY21W
- • Best for: Vehicle owners needing standard replacement indicator bulbs
- • Not ideal for: Use as a headlight, interior lamp, or non-indicator lighting
Amber PY21W bulbs with BAU15s base, rated 12V 21W. Supplied as a pack of 10 for indicator use.
Clear signalling, with amber PY21W 12V/21W rating
The PY21W designation identifies the filament and electrical rating, 12 volts at 21 watts, designed to match many indicator circuits. The amber colouring produces the required signal hue for turn indicators where PY21W is specified.
Consistent amber light keeps turn signals visible to other road users, helping to maintain legal signal colour and functionality.
Straightforward fitment, with BAU15s base
BAU15s describes the single-contact offset bayonet base used on many indicator lamp holders. The bayonet design secures bulbs by a simple push-and-twist action, ensuring correct alignment.
Quick replacement without adapters makes roadside or garage changes faster, reducing downtime during minor repairs.
Spare-ready bulk supply, with a pack of ten
Supplied as a set of ten individual bulbs, allowing multiple replacements from one purchase. Having several spares matches typical maintenance cycles for a single vehicle or small fleet.
Keeping a stock of bulbs reduces the chance of being caught without a working indicator and simplifies scheduled maintenance.
✨ The 4 Key Reasons for ASC Light Bulb
- Pack of ten, keeps multiple spares ready, reduces emergency trips to the garage
- BAU15s base compatibility, fits standard indicator sockets without adapters
- 12V 21W rating, matches many factory electrical loads for reliable signalling
- Amber PY21W colour, maintains visible and legally expected turn signal colour
📋 Technical Details at a Glance
- Category: Automotive Parts and Accessories
- Brand: ASC
- Designation: PY21W
- Voltage: 12V
- Wattage: 21W
❓ Frequently Asked Questions
Q: Are these bulbs compatible with BAU15s fittings?
A: Yes, the bulbs are specified with a BAU15s base, designed for bayonet-style indicator sockets that accept BAU15s fittings.
Q: What are the voltage and wattage ratings?
A: The bulbs are rated at 12 volts and 21 watts, matching the PY21W designation used for many vehicle indicators.
Q: How many bulbs come in a pack?
A: Each supply is a pack of ten bulbs, offering multiple spares for routine maintenance or emergency replacement.
🏆 Our Verdict
Drivers and small fleet maintainers who need reliable indicator replacements will find these bulbs useful. Amber PY21W colour, BAU15s base and a ten-bulb pack make them suited to routine maintenance and emergency spares. While individual costs vary, the bulk supply reduces repeat purchases and helps keep vehicles roadworthy over time.
