Genuine OEM Mazda Shock Absorber Dust Cover Cap, part number B4YA0491XA. This component is designed to protect the shock absorber rod from ingress of dirt, dust, and moisture, which can degrade performance and shorten the lifespan of the shock absorber. Its precise fit ensures it seals effectively against the shock absorber assembly. Manufactured to OEM specifications, this dust cover cap is essential for maintaining the integrity of the suspension system. Using genuine OEM parts ensures the correct protection and performance of your vehicle's suspension.