أغطية الصمامات إعلان واحد لـ Mercedes-Benz R-Class في الشرق الأوسط (دول مجلس التعاون الخليجي)

Fel-Pro valve stem seals are available in a variety of sizes, styles, and materials. These small components perform a valuable role—controlling the lubrication of the valve stems as they slide in the valve guide. Too little oil causes stem and guide wear; too much increases oil consumption