---
product_id: 539453723
title: "Philips Ultinon Pro3100 LED car signalling bulb (W21W white)"
brand: "philips"
price: "₨503"
currency: SCR
in_stock: false
reviews_count: 8
url: https://www.desertcart.sc/products/539453723-philips-ultinon-pro3100-led-car-signalling-bulb-w21w-white
store_origin: SC
region: Seychelles
---

# 3000 hours long-lasting life Instant on/off LED response 6000K crisp white light Philips Ultinon Pro3100 LED car signalling bulb (W21W white)

**Brand:** philips
**Price:** ₨503
**Availability:** ❌ Out of Stock

## Summary

> 🚗 Light up your drive with precision and style!

## Quick Answers

- **What is this?** Philips Ultinon Pro3100 LED car signalling bulb (W21W white) by philips
- **How much does it cost?** ₨503 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/539453723-philips-ultinon-pro3100-led-car-signalling-bulb-w21w-white)

## Best For

- philips enthusiasts

## Why This Product

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

## Key Features

- • **Durability That Lasts:** Built to endure with a 3000-hour lifespan, reducing replacements and keeping you road-ready.
- • **Brighter, Clearer Signals:** Stand out with 6000K pure white LEDs that enhance your vehicle’s visibility and safety.
- • **Instant Response Lighting:** Experience sharper, more distinct signaling with zero filament lag—LEDs light up instantly.
- • **Plug & Play Compatibility:** Easy installation designed to fit most vehicles without hassle, upgrading your ride in minutes.
- • **Optimized for Safety & Style:** Elevate your car’s exterior with sleek, modern lighting that commands attention and respect.

## Overview

The Philips Ultinon Pro3100 W21W LED car signalling bulb delivers crisp 6000K white light with instant on/off response, enhancing your vehicle’s signaling clarity and safety. Designed for easy installation and compatibility with most cars, it offers a durable 3000-hour lifespan, making it a smart upgrade for millennial professionals who value both performance and style on the road.

## Description

Philips Ultinon Pro3100 LED car signalling bulb (W21W white) : desertcart.co.uk: Automotive

Review: Very good ‘bulbs’ - I bought in the hope of a slightly brighter indicator light, and it achieves that. Not too bright to be silly, just that extra edge. What I hadn’t appreciated though was the additional benefit of a more distinct signal. Seeing a standard incandescent bulb side-by-side to this LED highlighted that the incandescent bulb doesn’t actually quite go out. The filament gets hot and the brief moment the power is off doesn’t give it chance to fully cool to nothing. The LED on the other hand is instantly on then off, making a more distinct, and hopefully noticeable, signal. Do note though that on some cars, my 2014 RAV4 included, you will need to increase the resistance in the signal circuit otherwise you will experience fast flashing, hyper flashing. That is just because the LEDs draw less current than their incandescent equivalent and you need to add a resistor to mimic the original load. I went for the Osram LED driving 21 watt version as a respected brand. Whilst I only changed the rear indicator bulbs for LEDs I add the resistors to the front indicator wiring as it was easier to access and allowed me to mount the resistors onto readily available metal brackets in the engine bay (that they need as they get hot!). I’m very impressed! I’ve got other Philips LEDs in other lights around the car and they’ve lasted years, so I’m confident that these will do the same. Well done Philips, another great addition to car safety.
Review: Cause indicators to flash rapidly - Ordered these for a 2011 Freelander 2 front and rear indicators. Perfect fit, very nicely made, and a good level of brightness without being blinding, but the bulbs flash at a very high rate when signalling. I believe the legal limit for the UK MoT is between 60 to 120 flashes per minute. These flash at at least the 120 max limit. To be fair, the listing says they will work 'with most vehicles', so perhaps they might be worth a try on your car as long was you are prepared to return them if not.

## Features

- Signal your intent with brighter exterior lighting
- Durable, long-lasting LED lighting, optimised for enhanced visibility
- Easy to install and compatible with most vehicles
- W21W LED white 6.000K 12V, W3x16d, x2
- It is your own responsibility to ensure that the use of the LED retrofit lights complies with applicable local legal requirements

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C4QDDLP2 |
| Auto Part Position | Outside |
| Best Sellers Rank | 12,191 in Automotive ( See Top 100 in Automotive ) 29 in Automotive Turn Signal Bulbs |
| Brand | Philips |
| Brand Name | Philips |
| Color Temperature | 6000 Kelvin |
| Colour | white |
| Colour temperature | 6000 Kelvin |
| Customer Reviews | 4.2 out of 5 stars 3,998 Reviews |
| Fit Type | Philips |
| Included Components | LED car bulbs |
| Item Type Name | Ultinon Pro3100 LED car signalling bulb (W21W white) |
| Item package quantity | 1 |
| Light Source Type | LED |
| Light source type | LED |
| Manufacturer | Lumileds |
| Manufacturer Part Number | 11065CU31B2 |
| Manufacturer Warranty Description | 2 |
| Operating Life | 3000 Hours |
| Package Quantity | 1 |
| Specific Uses For Product | Indicator Light |
| Specific uses for product | Indicator Light |
| Unit Count | 2.0 Count |
| Voltage | 12 Volts |
| Wattage | 21 watts |

## Product Details

- **Brand:** Philips
- **Colour temperature:** 6500 Kelvin
- **Light source type:** LED
- **Specific uses for product:** Indicator Light
- **Wattage:** 5 watts

## Images

![Philips Ultinon Pro3100 LED car signalling bulb (W21W white) - Image 1](https://m.media-amazon.com/images/I/51AZHX1XX+L.jpg)
![Philips Ultinon Pro3100 LED car signalling bulb (W21W white) - Image 2](https://m.media-amazon.com/images/I/51LwGxpxHqL.jpg)
![Philips Ultinon Pro3100 LED car signalling bulb (W21W white) - Image 3](https://m.media-amazon.com/images/I/61QWKeExtvL.jpg)
![Philips Ultinon Pro3100 LED car signalling bulb (W21W white) - Image 4](https://m.media-amazon.com/images/I/61ywRBxJtPL.jpg)
![Philips Ultinon Pro3100 LED car signalling bulb (W21W white) - Image 5](https://m.media-amazon.com/images/I/71gKIR4E8nL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very good ‘bulbs’
*by G***K on 5 November 2023*

I bought in the hope of a slightly brighter indicator light, and it achieves that. Not too bright to be silly, just that extra edge. What I hadn’t appreciated though was the additional benefit of a more distinct signal. Seeing a standard incandescent bulb side-by-side to this LED highlighted that the incandescent bulb doesn’t actually quite go out. The filament gets hot and the brief moment the power is off doesn’t give it chance to fully cool to nothing. The LED on the other hand is instantly on then off, making a more distinct, and hopefully noticeable, signal. Do note though that on some cars, my 2014 RAV4 included, you will need to increase the resistance in the signal circuit otherwise you will experience fast flashing, hyper flashing. That is just because the LEDs draw less current than their incandescent equivalent and you need to add a resistor to mimic the original load. I went for the Osram LED driving 21 watt version as a respected brand. Whilst I only changed the rear indicator bulbs for LEDs I add the resistors to the front indicator wiring as it was easier to access and allowed me to mount the resistors onto readily available metal brackets in the engine bay (that they need as they get hot!). I’m very impressed! I’ve got other Philips LEDs in other lights around the car and they’ve lasted years, so I’m confident that these will do the same. Well done Philips, another great addition to car safety.

### ⭐⭐⭐⭐⭐ Cause indicators to flash rapidly
*by G***N on 29 January 2025*

Ordered these for a 2011 Freelander 2 front and rear indicators. Perfect fit, very nicely made, and a good level of brightness without being blinding, but the bulbs flash at a very high rate when signalling. I believe the legal limit for the UK MoT is between 60 to 120 flashes per minute. These flash at at least the 120 max limit. To be fair, the listing says they will work 'with most vehicles', so perhaps they might be worth a try on your car as long was you are prepared to return them if not.

### ⭐⭐⭐⭐⭐ Works great with a 2011 R1200RT
*by D***N on 21 July 2025*

An ideal plug and play option, with no CANbus errors on my R1200RT. Projects great whilst not being horrendously blinding, and doesn't generate a tonne of heat. Clear orange colour as well - no concerns of confusion

## Frequently Bought Together

- PHILIPS Ultinon Pro3100 LED T10 car signalling bulb (W5W), 6.500K cool white
- Philips Ultinon Access LED car headlight bulb (H4), ultra-compact direct-fit, 80%, 6.000K, set of 2

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---

*Product available on Desertcart Seychelles*
*Store origin: SC*
*Last updated: 2026-01-28*