- Enhance your vehicle's air conditioning efficiency with our easy-to-install maintenance caps. This essential toolkit addition ensures your car's AC system operates optimally, extending its lifespan. - Our comprehensive 20-piece set of R134A service connection caps guarantees a secure fit, designed for durability and compatibility with a range of vehicles. - These high-quality air conditioning caps are essential for professionals and DIY enthusiasts alike, safeguarding service connections from dirt and potential damage during repairs. - Available in six sizes (13mm, 13.5mm, 14mm, 16mm, 17mm, and 17.5mm), each cap features an integrated rubber seal to prevent leaks while effectively resisting pressure and corrosion. - Practical applications include: 1. Routine maintenance: Use these caps to seal service ports after refrigerant charging, keeping your AC system clean and leak-free. 2. Repairs: Ideal for automotive technicians who need reliable protection for service connections during air conditioning repairs. 3. DIY projects: Perfect for car enthusiasts maintaining their own vehicles, ensuring long-term performance and reliability of the AC system. Invest in our air conditioning maintenance caps for a reliable solution that protects your vehicle's AC system and enhances its performance.