1. This headlight cover is crafted from premium materials, offering exceptional waterproofing and flame-retardant properties. Its excellent flexibility and superior insulation effectively protect the headlight bulb.2. This rubber cover prevents moisture condensation, humidity, or external debris from entering the fog lights, ensuring proper operation and significantly extending their lifespan.3. Compatible with 2.5-inch, 2.75-inch, 3.5-inch, and 4-inch light openings (sealed backing plate can be trimmed to fit installation needs), fitting most vehicle models.4. The soft rubber cap may deform during shipping but remains fully functional, ensuring your lighting system maintains clear visibility.5. Installation of the bulb dust cover is extremely simple. The built-in threaded design ensures a tight fit that stays secure and won't fall off. You can also pair it with a locking clip for double protection. Premium Materials: Crafted from high-quality materials, this light cover offers exceptional waterproofing and flame-retardant properties. It features excellent flexibility and superior insulation, ensuring stable performance in extreme environments like high or low temperatures while effectively protecting the headlight bulb. Functional Features: This rubber cover resolves the issue of original dust covers being incompatible after LED retrofits. It prevents moisture condensation, humidity, or external debris from entering fog lights, ensuring proper operation and effectively extending their lifespan. Product Details: Compatible with 2.5-inch, 2.75-inch, 3.5-inch, and 4-inch light openings (sealed backing plate can be trimmed to fit installation needs). Fits most vehicle models, ensuring tighter, safer bulb installation for stable, clear illumination and enhanced driving safety. Measure your light opening before ordering. Easy Installation: Installing the bulb dust cover is extremely simple. The built-in threaded design ensures a snug fit that stays securely in place. Simply select the corresponding size for installation. For added peace of mind, you can also pair it with a locking clip for dual protection. Package Contents: After placing your order, you will receive 2 bulb dust caps, perfect for replacing old parts. The soft rubber caps may deform during shipping, but this does not affect their functionality, ensuring your lighting system remains clear at all times. ASIN B0GT4KF28L Brand Heyzidu Model HEYFCG1701BL-2PCS Item Weight 1 ounces Manufacturer Heyzidu Item model number HEYFCG1701BL-2PCS Package Dimensions 0.04 x 0.04 x 0.04 inches Manufacturer Part Number HEYMPN4