12 Pack Air Conditioning Valve Core Kit R134A Car AC Refrigerant Valve Core Leakproof High Pressure Schrader Stem Cores for Car A/C System Service Vane Air Vacuum Pump R134a Recharge Hose Kit

Very handy set to have around. The valve cores are well-made and fit perfectly.

Fixed a tiny refrigerant leak with this..

Works as advertised and doesn't leak

They leak. I tried 3 pairs (total of 6 pieces), they all leaked. Though the bag had more, I stopped. It wasted money on refrigerants. It polluted the air. Worst of all it wasted so much time. Remember, taking out a valve will open up the system, so you'd need to vacuum the system at a minimum. Having changed 3 times, it could mean I also wasted my brand new receiver drier.

Good value for the money

They work

Pros:Value Pack: The YehVeh 12 Pack offers great value, providing users with a sufficient quantity of valve cores for multiple replacements or installations. This bulk pack ensures that users have an ample supply of valve cores on hand for future maintenance needs, saving time and money in the long run.High-Quality Material: Constructed from durable materials, these valve cores are designed to withstand high pressure and temperature conditions commonly encountered in automotive air conditioning systems. Their robust construction ensures reliability and longevity, minimizing the risk of leaks or failures.Universal Compatibility: Compatible with R134A refrigerant systems, these valve cores are suitable for use in various car, truck, and vehicle air conditioning systems. Their universal compatibility makes them versatile and widely applicable, catering to a broad range of automotive makes and models.Easy Replacement: The valve cores are designed for easy installation, allowing users to quickly and conveniently replace faulty or worn-out cores without the need for specialized tools or expertise. This user-friendly design makes them suitable for DIY enthusiasts and professional mechanics alike.Cons:Packaging: Some users may find the packaging of the valve cores to be basic or lacking in protective features. Improvements to the packaging could help prevent damage or loss during shipping and storage, ensuring that all valve cores arrive in optimal condition.Compatibility Verification: While the valve cores are advertised as compatible with R134A systems, users should verify compatibility with their specific vehicle's air conditioning system before installation. Incompatibility could lead to issues such as leaks or improper sealing, necessitating additional replacements or adjustments.Overall, the YehVeh 12 Pack Air Conditioning Vehicle Valve Core AC Schrader Valve Cores offer excellent value, quality, and compatibility for automotive air conditioning system maintenance. Their durable construction, universal compatibility, and ease of installation make them a practical choice for both DIY and professional applications. However, improvements to packaging and thorough compatibility verification are recommended to ensure a seamless user experience.

Valves are wrong. Too large. Correct ones look like car schrader valve.