The Sealey Fuel Pressure Gauge Set is a diagnostic tool designed for testing low-pressure fuel delivery circuits on common rail diesel systems. This professional gauge set comprises two separate gauges that enable both positive/negative and main pressure testing, helping technicians quickly identify fuel-related faults in modern diesel engines. The set features a 9.98mm button type connection system that allows direct compatibility with many common rail fuel systems. For vehicles not equipped with this button type connection, the gauges can be used alongside Sealey Model Numbers VS555 and VS552 to provide comprehensive coverage across different vehicle manufacturers and fuel system designs. A key advantage of this gauge set is its ability to be connected in situ with the fuel line, enabling real-time pressure monitoring whilst the engine is running. This live diagnostic capability allows mechanics to observe fuel pressure behaviour under actual operating conditions, making it an essential tool for workshops dealing with diesel engine diagnostics and repair. Features and Benefits: • Dual gauge design for comprehensive pressure testing capabilities • 9.98mm button type connection for direct system compatibility • In situ connection enables real-time running pressure monitoring • Quick identification of fuel delivery problems • Compatible with VS555 and VS552 for extended vehicle coverage Specifications: Brand: Sealey Nett Weight: 0.68kg