2X H21W BAY9S 435 427 20 LED Amber Indicator Bulbs CANBUS Error Free 12V

Item Description

Upgrade your vehicle's indicators with this pair of LiteSync H21W LED amber indicator bulbs, designed to provide bright, efficient illumination while maintaining a direct replacement fit.

Each bulb features 20 high-efficiency 2835 SMD LEDs, producing approximately 200 lumens per bulb while consuming just 2.4W.

Designed for H21W / BAY9S / BAW9S / HY21W applications and also commonly referenced as 435 / 427 bulbs.

Key Features

Brand: LiteSync
Quantity: 2 Bulbs / 1 Pair
Bulb Type: H21W / HY21W
Base: BAY9S / BAW9S
Reference Numbers: 435 / 427
LED Type: 20 × 2835 SMD per bulb
Light Colour: Amber
Voltage: 12V
Power Consumption: 2.4W per bulb
Brightness: Approx. 200 Lumens per bulb
CANBUS: Approx. 95% error-free compatibility
Polarity: Standard
Low power consumption
Long-lasting LED design
Direct replacement fit

Ideal For

Suitable for front or rear indicator applications where an H21W / HY21W / BAY9S / BAW9S bulb is specified.

Suitable for compatible 12V cars, vans and motorcycles.

Package Includes

2 × LiteSync H21W 20 LED Amber Indicator Bulbs

Important CANBUS Information

These bulbs are designed to be CANBUS-friendly and approximately 95% error-free. However, some vehicles have particularly sensitive bulb monitoring systems and may still display a warning or cause hyper-flashing. In these cases, additional resistors may be required.

Compatibility

Please check the bulb currently fitted to your vehicle before ordering. Bulb fitment can vary depending on vehicle model, year and specification.

📌 Fitment Guide: Vehicle compatibilities are there as a guide and may not be 100% correct. If you're unsure, please message us before buying and we can confirm fitment for you.

💬 Help Us Help You: We strive to deliver the right parts to you the first time. Please double-check and contact us with any questions before purchase to help us keep prices low and service high.

Shipping

Orders before 2pm (Mon–Fri) are shipped same day excluding bank holidays on a 48 Hour Service. An option for Next Day Delivery is available at checkout.

Returns

30 Day Returns Guarantee. If we are at fault, we’ll fix it fast. Buyer pays returns unless item is wrong or faulty.

About Car Mod Shop Ltd

At Car Mod Shop, we specialise in premium automotive lighting and performance accessories. From high-performance LED upgrades and sleek tail lights to dynamic mirror indicators, custom headlights, and aero wiper blades — we stock everything to enhance your vehicle’s style and visibility.

We're constantly expanding our range with the latest aftermarket parts to meet the needs of car enthusiasts and everyday drivers alike.