1 / 7Tek Automotive PY21W 12V 21W BAU15S Indicator Bulbs, 10 Pack
Tek Automotive PY21W indicator bulbs are specified as 12V, 21W BAU15S replacements for compatible front or rear indicator units. The claimed 10-bulb pack offers spares for servicing, but confirm your vehicle's bulb specification and fitting before ordering.
At a glance
- BAU15S offset-pin fitting is claimed for vehicles requiring 581 or PY21W bulbs.
- The listing claims E-marked road-legal compliance for UK road use.
- Specified for compatible front or rear indicator units and described as amber.
Often bought together
Pros and cons
Pros
- The claimed 10-bulb quantity can suit workshops, fleets or households that want several spares on hand.
- Amber output and an offset-pin base are specified for compatible indicator replacement.
Technical specifications
12 specifications| Brand | Tek Automotive |
|---|---|
| Manufacturer part number | TK581 |
| Pack quantity | 10 |
| Country of origin | China |
| Bulb type | PY21W |
|---|---|
| Alternative number | 581 |
| Voltage | 12 Volts |
| Wattage | 21 watts |
| Base | BAU15S |
| Fit type | Universal Fit |
| Position | Front, Rear |
| Colour | Amber |
|---|
What to know before buying
Listing details to confirm
Confirm your vehicle handbook specifies PY21W or 581 with a BAU15S offset-pin base, and check the required quantity before purchase. The listing details conflict: the title says 10 Pack and another detail gives 10 items, while package-quantity fields say 1. The listing also claims E-mark road legality, which is not independently confirmed here.
Who is it for?
A good fit for
- Drivers replacing compatible 12V PY21W/581 BAU15S indicator bulbs.
- Garages or multi-vehicle households seeking a larger supply of matching replacement bulbs.
Less suited to
- Vehicles requiring a different bulb type, base, voltage or wattage.
- Buyers needing an individually confirmed package quantity or independently verified compliance claim.
Customer reviews on Amazon
- 5 stars
74% 74% - 4 stars
16% 16% - 3 stars
6% 6% - 2 stars
1% 1% - 1 star
3% 3%
Customer feedback describes good quality, functionality and fit, with some buyers mentioning an offset peg and savings. Brightness is also noted, but feedback on colour is mixed, including a report that the orange appearance does not last. For buyers, reported fit is encouraging but does not replace checking the PY21W/581 BAU15S requirement. Aggregate ratings lean strongly towards five-star responses, while a smaller share is lower-rated. Ratings alone do not explain why customers chose them.
Positive themes
- Customer feedback praises quality, functionality, fit and value.
Mixed feedback
- Feedback about colour is mixed. Some describe the bulbs as bright, while one report says the orange appearance does not last.
Frequently asked questions
Will these bulbs fit my car?
The listing specifies PY21W or 581 bulbs with a BAU15S offset-pin base. Check your vehicle handbook and the existing bulb before ordering.
Can they be used at the front or rear?
The listing describes them for compatible front or rear indicator units. It does not establish that every vehicle uses this bulb in both positions.
How many bulbs are included?
The title and item count say 10, but package-quantity fields say 1. The supplied listing information is inconsistent, so confirm the selected listing's pack quantity.
Are they road legal in the UK?
The listing claims E-marked road-legal compliance. That claim is not independently confirmed in the supplied information.
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