Ring R535 24V 21W H21W Halogen Bulb – Bay9s Single Contact – Bayonet (1 Bulb)

Need a replacement bulb for your truck or heavy equipment?

This Ring R535 is a 24-volt, 21-watt halogen bulb with an H21W rating.

It uses a Bay9s (single contact) bayonet base, so it's easy to install.

Perfect for brake lights or other applications requiring a bright, warm white light.

It's road legal, so you're good to go for inspections.

This is a single bulb, brand new from Ring, a trusted name in lighting.

Crosses to OE numbers like HB439 and LLB435.

Made in China but meets quality standards.

Keep a spare in the glove box—you never know when a bulb will go out.