
RING W21W 12V 21W signal lamp bulb, capless design, for brake, reversing & indicators.
The RING AUTOMOTIVE W21W Signal Lamp Bulb is a capless, single-filament bulb designed for reliable performance in brake, reversing, and indicator lights. Operating at a standard 12V with a power rating of 21W, this bulb delivers a bright and clear output, ensuring maximum visibility and safety on the road.
Featuring a W3x16d base, this bulb is specifically engineered for a secure and straightforward installation in compatible automotive lighting units. Its capless design simplifies handling and reduces the risk of damage when fitting multiple bulbs, making it a practical choice for both professional mechanics and DIY enthusiasts.
The bulb size, identified as W21W, corresponds to common car lighting requirements, offering a dependable replacement option for signal applications. With a height of 43mm, width of 33mm, and depth of 15mm, this compact bulb is easy to store and fits neatly into standard bulb housings.
Manufactured by RING AUTOMOTIVE, a trusted name in automotive lighting, this bulb is built to meet rigorous standards for durability and performance. Whether you are upgrading your existing bulbs or replacing a faulty one, this W21W lamp ensures consistent, high-quality illumination for your vehicle's signalling needs.
Need larger quantities? Need additional quantities? Get in touch and we'll arrange it for you.
Always follow local regulations and product guidance.
Free standard delivery on UK mainland orders. Express delivery options and international shipping available at checkout.
We offer a 30-day money-back guarantee on most products. For faulty items, contact us within 14 days for a replacement or refund.
View Full Delivery & Returns PolicyWe take the utmost care with your payment and personal details. Our website employs advanced encryption technology, including Secure Sockets Layer (SSL), to protect your information during transmission. You can verify a secure connection by looking for 'https' and a locked padlock in your browser.
Cookies enhance your shopping experience by keeping track of your basket and remembering you when you return. We also use banner advertising based on your browsing history to present products of potential interest.
Beware of phishing scams! We will never ask for personal details via email. If such information is required, we'll request you to contact us by phone. If you receive an email requesting sensitive information, do not respond and let us know immediately.