- Application: Designed specifically for GM 6.6L Duramax engines, this tool is essential for accurate diesel fuel pressure and vacuum testing, ensuring optimal engine performance. - Package Includes: The kit comes complete with a gauge assembly featuring a 6-foot hose and a quick coupler for easy connections and usability. - Specifications: The high-quality 3-1/2" gauge measures pressure from 30 inHg to 15 PSI, allowing for precise readings to help diagnose fuel system issues effectively. - Superior Quality: Constructed from durable synthetic rubber, this test kit withstands extreme temperatures, ensuring reliable performance in both heat and cold. The high-precision dial guarantees accurate readings for dependable results. - Practical Use Cases: - Routine Maintenance: Regularly check fuel pressure to prevent engine issues and maintain peak performance. - Diagnostics: Quickly identify fuel delivery problems or vacuum leaks during troubleshooting, saving time and reducing repair costs. - Professional Mechanic Tool: Ideal for automotive technicians needing a reliable tool for diesel engine diagnostics, enhancing service efficiency. This durable and precise testing kit is a must-have for any GM 6.6L Duramax engine owner or professional mechanic, ensuring you have the right tools to maintain and diagnose your vehicle effectively.