---
product_id: 48459602
title: "PY21W (581) Pure Light Halogen Headlight Bulbs, 12 V 21 W, Original Quality - Socket Type BAU15s - Pack of 2 Replacement Car Light Bulbs"
brand: "bosch"
price: "€ 9.35"
currency: EUR
in_stock: true
reviews_count: 8
category: "Bosch"
url: https://www.desertcart.es/products/48459602-py21w-581-pure-light-halogen-headlight-bulbs-12-v-21
store_origin: ES
region: Spain
---

# Long lifespan, fewer replacements 12V, 21W bright power Easy plug & play BAU15s socket PY21W (581) Pure Light Halogen Headlight Bulbs, 12 V 21 W, Original Quality - Socket Type BAU15s - Pack of 2 Replacement Car Light Bulbs

**Brand:** bosch
**Price:** € 9.35
**Availability:** ✅ In Stock

## Summary

> 🚗 Light up your drive with Bosch Pure Light – because your car deserves the spotlight!

## Quick Answers

- **What is this?** PY21W (581) Pure Light Halogen Headlight Bulbs, 12 V 21 W, Original Quality - Socket Type BAU15s - Pack of 2 Replacement Car Light Bulbs by bosch
- **How much does it cost?** € 9.35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/48459602-py21w-581-pure-light-halogen-headlight-bulbs-12-v-21)

## Best For

- bosch enthusiasts

## Why This Product

- Trusted bosch brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety-First Design:** Stay compliant and visible with bulbs engineered for optimal clarity and road safety.
- • **Enduring Performance:** Built to last with a long service life, reducing the hassle and cost of frequent bulb changes.
- • **Pure Light Brilliance:** Experience original equipment quality illumination that cuts through the night with precision.
- • **Dual Upgrade Advantage:** Replace bulbs in pairs to maintain balanced lighting and avoid unexpected failures.
- • **Plug & Play Simplicity:** Designed with BAU15s socket for hassle-free installation—upgrade your ride in minutes.

## Overview

Bosch PY21W (581) Pure Light Halogen Headlight Bulbs deliver 12V and 21W of reliable, high-quality illumination with a BAU15s socket type. Engineered for long-lasting performance and easy installation, these bulbs offer original equipment standard quality, enhancing both safety and style for your vehicle’s rear lighting needs.

## Description

From the manufacturer For those searching for a good price-performance ratio Leveraging a century of automotive lighting expertise, Bosch ensures excellent quality. With the Bosch Pure Light headlights, you will discover the world of original quality parts. When it comes to navigating the night, clarity and visibility are paramount. The Bosch Pure Light headlight bulb will reliably do this and more. Thanks to the long lifespan, the bulbs also rarely need replacing. Easy to install, they are the preferred choice for many drivers searching for replacement headlight bulbs. Good value The Pure Light series delivers an excellent balance between cost and performance. Long-lasting Long service life for fewer replacements. Excellent quality Made with high-quality materials and components. Universal The comprehensive Pure Light product line offers suitable vehicle lamps for almost every field of operation. Never in the dark For your safety and to be compliant with the law, Bosch recommends that you always have a box of emergency backup bulbs in your vehicle in the event of failure. Gloves are your ally Handling bulbs with your fingers may reduce their lifespan. When replacing them, it is advisable to use gloves. This also helps avoid potential burns. Change your lamps in pairs If one bulb goes out, it won’t take long for the other one to stop working. For your safety and to save money on repairs, Bosch recommends changing both bulbs simultaneously. Stay bright Bulbs naturally deteriorate and diminish in intensity over time. Bosch recommends changing them every 2 years on average.

Review: bulbs are an absolute game-changer - I just had to share with you my recent discovery of the Bosch PY21W (581) Magic Effect Car Light Bulbs. These bulbs are an absolute game-changer when it comes to enhancing your car's lighting. With a voltage of 12V and power of 21W, these BAU15s bulbs are not only bright but also incredibly efficient. The magic effect these bulbs create is simply unmatched - it's like giving your car a whole new personality! I recently installed them in my own car, and the difference is truly remarkable. Not only do they provide excellent visibility on the road, but they also add a touch of style and sophistication to my vehicle. I've been receiving compliments left and right, and I have to say, it feels great to stand out on the road. Whether you're looking to upgrade your car's lighting for safety reasons or simply want to give it a unique flair, these Bosch bulbs are the way to go. Trust me, you won't be disappointed! So why wait? Treat your car to the Bosch PY21W (581) Magic Effect Car Light Bulbs today and experience the difference for yourself.
Review: Works as expected. Delivery good. - Good price at £2.71 for two bulbs delivered well by desertcart. One bulb of these indicators used immediately & works.

## Features

- Pure Light, complete standard series in original equipment quality
- PY21W
- 12 V, 21 W
- BAU15s

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003JY8268 |
| Auto Part Position | Rear |
| Brand | Bosch |
| Brand Name | Bosch |
| Colour | Yellow, Yellow |
| Country Of Origin | Thailand |
| Customer Reviews | 4.6 out of 5 stars 5,820 Reviews |
| Fit Type | Vehicle Specific Fit |
| Global Trade Identification Number | 03165141228854 |
| Item Weight | 9 Grams |
| Item package quantity | 1 |
| Light Source Type | Incandescent |
| Light source type | Incandescent |
| Manufacturer | Bosch |
| Manufacturer Part Number | 1987301018 |
| Package Quantity | 1 |
| Specific Uses For Product | Headlight bulb |
| Specific uses for product | Headlight bulb |
| UPC | 780873641561 |
| Unit Count | 2.0 count |
| Voltage | 12 Volts |
| Wattage | 21 watts |

## Product Details

- **Brand:** Bosch
- **Light source type:** Incandescent
- **Specific uses for product:** Headlight bulb
- **Wattage:** 21 watts
- **Item package quantity:** 1

## Images

![PY21W (581) Pure Light Halogen Headlight Bulbs, 12 V 21 W, Original Quality - Socket Type BAU15s - Pack of 2 Replacement Car Light Bulbs - Image 1](https://m.media-amazon.com/images/I/61oF+4w+UFL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: Is the glass amber coloured or is the amber a covering over the bulb?**
A: I think the bulb was amber in colour. Sorry it's so long ago since I changed them.

**Q: Is the glass amber or does it have an amber film? Thanks**
A: No

## Customer Reviews

### ⭐⭐⭐⭐⭐ bulbs are an absolute game-changer
*by C***C on 5 July 2024*

I just had to share with you my recent discovery of the Bosch PY21W (581) Magic Effect Car Light Bulbs. These bulbs are an absolute game-changer when it comes to enhancing your car's lighting. With a voltage of 12V and power of 21W, these BAU15s bulbs are not only bright but also incredibly efficient. The magic effect these bulbs create is simply unmatched - it's like giving your car a whole new personality! I recently installed them in my own car, and the difference is truly remarkable. Not only do they provide excellent visibility on the road, but they also add a touch of style and sophistication to my vehicle. I've been receiving compliments left and right, and I have to say, it feels great to stand out on the road. Whether you're looking to upgrade your car's lighting for safety reasons or simply want to give it a unique flair, these Bosch bulbs are the way to go. Trust me, you won't be disappointed! So why wait? Treat your car to the Bosch PY21W (581) Magic Effect Car Light Bulbs today and experience the difference for yourself.

### ⭐⭐⭐⭐⭐ Works as expected. Delivery good.
*by S***E on 18 July 2025*

Good price at £2.71 for two bulbs delivered well by Amazon. One bulb of these indicators used immediately & works.

### ⭐⭐⭐⭐ Blinking good
*by J***P on 7 July 2025*

The bulbs fit and work as good as any original parts. We bought a pack of two for our Peugeot 306 1999 model. They blinking good value for money.

## Frequently Bought Together

- Bosch PY21W (581) Pure Light Car Light Bulbs - 12 V 21 W BAU15s - 2 Bulbs
- Bosch P21W (382) Pure Light Car Light Bulbs - 12 V 21 W BA15s - 2 Bulbs
- Bosch H7 (477) Pure Light Headlight Bulbs - 12 V 55 W PX26d - 2 Bulbs

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-02-02*